It has a complex life cycle with alternation between multicellular diploid and haploid. In this way the green alga ulva resemble land plants.
Ulva lactuca, often known as sea lettuce, is frequently used in salads as a marine vegetable. In addition, it is prepared and served with meats, fish, and soups. It is a typical human dietary source in China, Japan, Scandinavia, Scandinavian countries, Great Britain, and Ireland. America's U.S.
This is a little genus of green marine and brackish water algae. It is edible and frequently referred to as "sea lettuce." Formerly placed in the Enteromorpha order, species with hollow, single-layered thalli are now generally agreed to belong in Ulva.
Gametophytes are haploid multicellular plants (or algae) that use specialised cells to produce gametes, hence the name "gametophytes." The creature in this instance is already a haploid, hence meiosis is not directly engaged in the creation of the gametes. A diploid zygote is created through fertilisation of the haploid gametes.
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Ulva has a complex life cycle with alternation between multicellular diploid and haploid generations in this way it resembles land plants.
As a marine vegetable, ulva lactuca, also referred to as sea lettuce, is frequently used in salads. It is additionally made and served with soups, fish, and meats. In China, Japan, Scandinavia, the Scandinavian countries, Great Britain, and Ireland, it is a common source of human nutrition.
This small genus of green brackish and marine algae. It is sometimes referred to as "sea lett
uce" and is edible. It is now generally accepted that species with hollow, single-layered thalli belong in the Ulva order instead of the Enteromorpha order.
The term "gametophytes" refers to haploid multicellular plants (or algae) that require specialised cells to create gametes. Since the organism in question is already haploid, meiosis is not directly involved in the production of gametes. The haploid gametes are fertilised to produce a diploid zygote.
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Scientific research has led to the discovery of many types of bacteria and viruses that cause human diseases.
Which statement best describes the impact of this scientific research?
Answer: D
Explanation: I have my ways ;>
What is the name of the scientist that developed the classification system we use today?.
The name of the scientist that developed the classification system we use today is Carl Linnaeus.
Carl Linnaeus is called the "father of modern taxonomy". He gave the binomial nomenclature system. Apart from it, he also classified all the organisms bases on their similarities and dissimilarities into various categories.
Classification system is the categorization of organisms into various groups on the basis of their similarities and dissimilarities. The widely used classification system was given by Carl Linnaeus. He divided all the living organisms into 7 hierarchical groups. These are: Kingdom, Phylum/Division, Class, Order, Family, Genus, and Species. Kingdom is the largest and Species is the smallest of all.
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which component of the immune system is deficient in people with infections caused by viruses, fungi, or yeast?
T cells of the immune system is deficient in people with infections caused by viruses, fungi, or yeast
What is immune system ?A intricate system of cells, tissues, organs, and the substances they produce that aids the body in the fight against illness and infection. The lymphatic system, which includes the thymus, spleen, tonsils, lymph nodes, lymphatic vessels, and bone marrow, as well as white blood cells, make up the immune system.
The Th1 immune response plays a critical role in host defence against the majority of fungi, and both experimental murine models and human infections have demonstrated the significance of this response. After exposure, APCs release IL-12, which is essential for Th1 lineage commitment.
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The muscle group that helps the prime movers and protects from unwanted movements are known as.
Answer:
Synergistic muscle groups
Explanation:
muscles that assist the action of the agonist. -Synergistic muscle groups help prevent instability or unwanted movements. They help the prime mover to work more efficiently and/or precisely. fixator is a specialized synergist that immobilizes the origin of a prime mover so that all tension is exerted at the insertion.
you are doing a biochemical analysis of molecules from cells from patients with a certain disease compared to cells from control patients who do not have the disease. you find that patients with the disease have unusually high levels of cytosine molecules with ch3 groups attached to their cells. which modification has taken place in the cells from the disease patients?
The reason being that you discover that individuals with the illness have remarkably high numbers of cytosine molecules with ch3 groups linked to their cells. DNA methylation is the term used to describe the process or modification that has occurred in the cells of illness patients.
Why is methylation significant, and what is it?A vital biochemical process called methylation occurs billions of times in every single cell of the human body. It carries out a variety of biological functions, including detoxification. the DNA's expression.
Methyl groups are added to the DNA molecule as part of the biological process of methylation. Methylation can change the activity of a DNA region without changing the sequence. When it takes place at a gene promoter, DNA methylation frequently inhibits gene transcription.
Therefore, DNA methylation is an epigenetic mark that can be passed down through the family. DNA methyltransferases covalently add a methyl group to the DNA cytosine ring at position C-5 (DNMTs). Thus, in the aforementioned situation, using the will enable you to find your goals more effectively.
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Suppose human activities that influence the carbon cycle came to a complete stop. Use the information provided in the figure to predict the net effect on global carbon cycling.
a) Carbon cycling would be brought into balance so that it moves at equal rates through all compartments.
b) Carbon cycling would be shifted toward an increase in deposition in sediments and fossil fuels and a decrease in inorganic carbon dioxide levels.
c) Carbon cycling would be shifted toward an increase in outgassing of carbon dioxide from ocean waters and a decrease in carbon levels in living plant biomass.
d) Carbon cycling would be shifted toward an increase in dissolution of carbon dioxide into ocean waters and a decrease in carbon levels in living plant biomass.
Option c - Carbon cycling would be shifted towards an increase in deposition in sediments and fossil fuels and a decrease in inorganic CO2 levels.
What is the carbon cycle ?The exchange of carbon between the Earth's biosphere, pedosphere, geosphere, hydrosphere, and atmosphere occurs through the carbon cycle, a biogeochemical process. Both biological substances and many minerals, including limestone, mostly consist of carbon. The carbon cycle is one of three cycles—along with the nitrogen cycle and the water cycle—that play a crucial role in the ability of Earth to support life. It describes how carbon is transported throughout the biosphere as it is recycled and reused, as well as the long-term processes of carbon sequestration to and release from carbon sinks.At the moment, the land and the ocean serve as carbon sinks, absorbing about one-fourth of annual anthropogenic carbon emissions.Learn more about carbon cycle refer to :
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Describe what matter and energy cycling is, and why they are important for the Earth as a system and for living things.
The term matter and energy cycling is seen as Ecosystem processes preserve materials and energy. Energy changes forms as it flows through an ecosystem, but no new energy is produced. Similar to how matter cycles throughout an environment, no new matter is created as atoms are rearranged into other molecules.
The reason why matter and energy cycling are important for the Earth as a system and for living things.
The sun provides the majority of the energy required to cycle matter through the systems of the world. the material cycle. Nutrients must be recycled in order to secure the survival of living things because there are only finite amounts of them available on the planet.Can energy and matter be cycled?Energy and matter are both conserved within natural processes. It follows that while energy and matter can adopt many forms, they cannot be generated or extinguished. Different types of matter and energy can interact, and energy and matter frequently cycle within a system.
Energy changes forms as it flows through an ecosystem, but no new energy is produced. Similar to how matter cycles throughout an environment, no new matter is created as atoms are rearranged into other molecules. As a result, energy and matter are preserved throughout all ecosystem processes.
Therefore, These cycles are powered by energy from the sun and the heat of the Earth. In these cycles, the matter moves between reservoirs where it is temporarily held. Bonds are broken and atoms are rearranged into new molecules as matter cycles.
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If a solid line represents a covalent bond and a dotted line represents an intermolecular interaction, which choice shows a hydrogen bond?.
The sole hydrogen bond would be H3N—H-O-H since hydrogen bonds only happen when H is connected to N, O, or F. H is bound to O in H-O-H and to N in H3N in. Hydrogen bonding is therefore possible.
What distinguishes intramolecular and intermolecular hydrogen bonds?The main distinction between intramolecular and intermolecular hydrogen bonding is that intramolecular hydrogen bonding takes place within the molecule itself, whereas intermolecular hydrogen bonding occurs between two nearby molecules.
Are there covalent bonds in solid lines?Two hydrogen atoms that have one electron in each of their 1 s orbitals combine to form a hydrogen molecule. In the covalent bond, the two hydrogen atoms are drawn to the same pair of electrons. Either a solid line or a pair of "dots" are used to symbolize the link.
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which of these fuels would be the best to burn, if we must continue to burn fuel and why
A) gasoline (petrol)
B) hydrogen
C) wood
D) Coal
Answer:
C
Explanation:
Apparently, wood is regarded as the most ecologically benign fuel, and hence the most generally recommended. However, only dried wood should be used; as smokeless coal fuels will cause substantially less air pollution than ordinary house coal.
atp is considered a high-energy molecule. when atp undergoes hydrolysis to adp, how much energy is produced?
One ATP molecule hydrolyzes to release 7.3 kcal/mol of energy (energy release rate G = 7.3 kcal/mol).
An example of hydrolysisA hydrolysis process involves the dissolution of a salt of a weak acid or base in water. You can hydrolyze even strong acids. Hydronium and bisulfate are produced, for instance, when sulfuric acid is dissolved in water.
The removal of water during hydrolysisWater is added during hydrolysis, which destroys polymer bonds. On the other hand, dehydration synthesis, which builds up the monomers into a polymer, is also a possibility. Dehydration synthesis is the process of removing water from compounds that bind monomers together to create polymers.
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one human chromosome set consists of about 3.2 mb (mega base pairs). how many mb would you find in a human skin cell during the g2 phase
A human skin cell during the g2 phase would have Four by 3.2 MB .
A cell has 3 elements: the cell membrane, the nucleus, and the cytoplasm. The nucleus is a structure inside the cell that incorporates the nucleolus and the maximum of the cellular DNA. it's also in which maximum RNA is made.
Cells are the basic constructing blocks of all residing things.
Cells provide shape and the necessary function for all dwelling matters, from microorganisms to ordinary people. Cells residence the organic equipment that makes the proteins, chemical substances, and indicators chargeable for the whole thing that occurs interior our bodies.
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What’s the societal ecological or technical constraints? Would resource managers considered before proposing solutions
The societal ecological or technical constraint and the way that resource managers would considered before proposing solutions are given below.
The societal ecological or technical constraint?Social characteristics and behaviors that influence a project's viability among a public are referred to as social constraints. Before offering a solution, a resource manager should take into account social restrictions, which include official practices like government regulations as well as informal norms like cultural preferences.
Technical limitations are rigid design choices made at the technical level that cannot be changed. Technical limitations are typically introduced by the plan's early stakeholders.
Before recommending a solution, a resource manager should take into account technological limitations such the operating system and framework, platforms supported, and programming languages required for various reasons.
Lastly, Environmental restrictions have the biggest impact on businesses. Before suggesting a solution, a resource manager should take into account ecological restrictions such social expectations and requirements, competitor behavior, regulatory requirements, change in company, and modification in technology. Environmental restrictions are crucial to the firm that needs to plan ahead.
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human blood types are, in part, determined by the abo system. the allele frequency for blood type ia is 0.3, and ib is 0.1. what is the frequency of b-type individuals in a population?
In the gene pool, 80% of the alleles are A and 20% are B. We see Hardy-Weinberg proportions after one generation of random mating: 16 AA homozygotes, 8 AB heterozygotes, and 1 BB homozygote. Keep in mind that allele frequencies are unaffected.
Which population's gene frequency is each?Gene frequency is the proportion of a population that possesses an allele (i.e., one type of gene variant) at a certain location (Gillespie 2004). Allele frequency is a more fitting name for it.
What percentage of a population does that?An allele's population frequency is calculated by dividing its frequency by the total number of alleles present in a population.
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Which laboratory activity involves a chemical change?
leaving a copper penny in vinegar until it turns green
boiling saltwater for several minutes until only solid salt remains
extracting iron filings from a sand mixture using a magnet
crushing a rock with a hammer to extract mineral deposits
Answer: Leaving a copper penny in vinegar until it turns green
Explanation: The copper changes the color making it a chemical change due to the chemical reaction with vinegar or acetic acid.
Answer:
leaving a copper penny in vinegar until it turns green
Explanation:
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Which molecule below will be moved across the cell membrane during osmosis?
Question 8 options:
A :CO2, Carbon Dioxide
B.C6H12O6, Glucose
C.H2O, Water
D.ATP
Answer:
H2O, water
Explanation:
because osmosis is the removal of solvent from it's solutions
so water molecules are removed
What is the salinity of normal sea water? *
A. about 35 parts per thousand
B. about 40-45 parts per thousand
C. about 17 degrees Celcius
D. about 1.025 grams/ml
Answer:
Option (B)
Explanation:
Seawater, or salt water, is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of about 3.5% (35 g/l, 35 ppt, 600 mM). This means that every kilogram (roughly one liter by volume) of seawater has approximately 35 grams (1.2 oz) of dissolved salts (predominantly sodium (Na+
How does cholesterol help stabilize the plasma membrane in hot and cold temperatures.
Cholesterol is bidirectional regulator of membrane fluidity so at high temperatures it stabilizes the membrane and raises its melting point, in low temperatures it intercalates between the phospholipids and prevents them from clustering together .
Cholesterol has tetracyclic ring structure and also is trans conformation, that renders the molecule with rigid characteristics that increases membrane packing and contributes to the integrity and rigidity of cell membranes.
Hence, at low temperatures, cholesterol increases membrane fluidity by preventing membrane lipids from interacting close together. At high temperatures, cholesterol decreases membrane fluidity.
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Which shell adaptation did you choose for part two and why discuss the results and the effectiveness of the adaptation.
You'll need to choose one first, but the detachable variety keeps the snail attached to the ground or other shockproof items, while a thicker strategy shields it from predators that could try to damage it.
How would you define adaptations?The process of adapting involves modifying something or your behavior to suit a new environment or goal. When forced to, the majority of living things are able to adapt. Synonyms include familiarization, habituation, naturalization, and acclimatization. More alternatives to adaption.
What does evolution mean by adaptation?The process of evolution whereby an organism improves its capacity to survive in its area or habitats is known as adaptation. The degree which an organism can survive and procreate in a specific range of environments is known as its adaptation, or level of "adaptedness."
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Most of the energy released in citric acid cycle reactions is conserved in ________.
Most of the energy released in citric acid cycle reactions is conserved in NADH.
Tricarboxylic acid (TCA) cycle or Krebs cycle, is the main source of energy for cells and most important part in aerobic respiration. The cycle converts the available chemical energy of acetyl coenzyme A (acetyl CoA) into the reducing power of nicotinamide adenine dinucleotide or NADH.
Citric acid cycle also captures the energy stored in the chemical bonds of acetyl CoA in a step-by-step process, that traps them from an high-energy intermediate molecules.
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The map was made using data collected by satellite image equipment 
Which two statements best describe the sea surface temperature shown in the map
A. Region 4 is warmer than region 3
B. Region 1 is colder than region 2
C. region 3 is warmer than region 1
D. Region 2 is colder than region 4
Region 1 is colder than region 2 and region 3 is warmer than region 1 are the two statements best describe the sea surface temperature shown in the map.
The region 1 is north pole and region 4 is south pole , and both this regions are colder than the rest regions shown in map.The North Pole experiences yearly average temperatures of 32 F (0 C) in the summer and minus 40 F (-40 C) in the winter. The average temperatures in the South Pole, in contrast, are much colder, averaging minus 76 F (minus 60 C) in the winter and minus 18 F (minus 28.2 C) in the summer.The fact that the South Pole is perched on a massive ice sheet that is itself situated on a continent is what makes it so much colder than the North Pole. More than 9,000 feet, or more than a mile and a half above sea level, is the elevation of the ice sheet's surface at the South Pole.For more information on north and south pole kindly visit to
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california has a unique geography and a diversity of ecosystems that supports a wide range of endemic plant life. for this reason, california is what?
Answer:
A biodiversity hotspot :)
Explanation:
California has a unique geography and a diversity of ecosystems that supports a wide range of endemic plant life. for this reason, california is biodiversity hot spot.
Why does California have so many species?California is the most populous state in the country and has the most variety of species and habitats of any state in the union. Although it is a hotspot for biodiversity worldwide, it is also losing biodiversity at one of the fastest rates. All Californians must take immediate action to buck this trend.California Biodiversity Day, an annual event started last year to honour the state's extraordinary biodiversity and urge efforts to maintain it, was first officially observed on September 7, 2019.As part of a biodiversity open house on September 7-8, 2019, California Natural Resources Secretary Wade Crowfoot urged all Californians to come outside and enjoy nature, including state parks, wildlife regions, and ecological reserves.
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which one of the following bacterial pathogen cellular components is considered an endotoxin that is relatively harmless as long as the bacterial pathogen cells remain intact, but when this cellular component is released by the lysis of many bacterial pathogen cells, overstimulates the host immune defenses, which may result in lethal endotoxic shock? choose one:a. bacterial cell wall fragmentsb. bacterial inner membrane phospholipidsc. bacterial lipopolysaccharidesd. bacterial periplasmic proteinse. bacterial cytoplasmic proteinsf. bacterial dna fragmentsg. bacterial rna fragmentsh. none of the other choices is correct.
Bacterial pathogen cellular components that is considered an endotoxin that is relatively harmless as long as the bacterial pathogen cells remain intact, but when component that is released by the lysis of many bacterial pathogen cells, overstimulates the host immune defenses, which may result in lethal endotoxic shock is bacterial Lipopolysaccharides. The correct answer is C.
Lipopolysaccharides present in the outer membrane of the cell wall of Gram-negative bacteria are called endotoxins because they are released when the microbial cells lyse.
Lipid A, a lipopolysaccharide, causes systemic reactions such as fever, blood clotting, weakness, and inflammation. Lipopolysaccharide induces host macrophages to release pyrogens such as the cytokines interleukin-1 and tumor necrosis factor. The overall effect is sepsis and hypotension, or septic shock.
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what kind of instructions does each specialized cell in an animal's body use?
A. the entire set of instructions on a complete copy of DNA
B. the set of instructions from every gene in a every chromosome
C. a subset of instructions on a complete copy of DNA
D. a set of instructions on incomplete chromosomes
Answer: a subset of instructions on a complete copy of DNA
Explanation:
specialized cell in an animal's body uses the entire set of instructions on a complete copy of DNA. option (A) is correct
what are specialized cells?Specialized cells are those created specifically to perform a specific function in the body, such as red blood cells that are made to transport oxygen. In accordance with the exact task you require them to perform, nerve cells assist in either the contraction or the relaxation of muscles.
what is DNA?Deoxyribonucleic acid is a polymer made of two polynucleotide chains that form a double helix around one another. All known living things, including many viruses, have genetic material in their polymers that direct how they should function, grow, and reproduce. Nucleic acids include ribonucleic acid and DNA.
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which endocrine gland does not play a role in regulating the hormones that affect patients with myxedema coma
The endocrine gland that does not play a role in regulating the hormones in affected patients with myxedema coma is the C. Adrenal gland.
What is the adrenal gland of the human body?The adrenal glands of the human body are located on the kidney and they are responsible for the secretion of different types of chemical messenger hormones such as for example steroid hormones. i.e., cortisol and or aldosterone hormones.
Aldosterone chemical messenger hormone is a key chemical messenger hormone required to modulate normal blood pressure values such as regulating liquid retention by controlling sodium and potassium in the bloodstream.
Therefore, with this data, we can see that the adrenal gland of the human body is fundamental to secreting different hormones such as occur with the aldosterone hormone.
Complete question:
Which endocrine gland does not play a role in regulating the hormones that affect patients with myxedema coma?
A. Pituitary gland
B. Hypothalamus
C. Adrenal gland
D. Thyroid gland
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what are examples of types of chemical markers associated with dna that determines when, where and by how much genes are expressed in each cell?
The type of chemical marker associated with DNA is Epigenetic.
Epigenetics is the study of how changes in your environment and behavior can have an impact on how your genes function. While epigenetic changes can alter how your body interprets a DNA sequence, they are reversible and do not alter your DNA sequence as genetic changes do.
The field of epigenetics is concerned with stable phenotypic changes that do not result from changes in the DNA sequence. Epigenetics, which derives its name from the Greek prefix epi-, refers to traits that are "on top of" or "in addition to" the conventional genetic basis for heredity.
Individual differences in physiology, cognition, behavior, and appearance—collectively known as phenotypes—are produced by epigenetic processes.
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Karyotypes can be studied to determine an organism’s chromosomal makeup and to detect genetic defects. Turner syndrome occurs when a female has an incomplete set of sex chromosomes. Symptoms of Turner syndrome include swollen hands and feet, short stature, and infertility. Which type of chromosomal mutation is responsible for causing Turner syndrome?
polyploidy
tetraploidy
aneuploidy
trisomy
Turner Syndrome is Aneuploidy of the X chromosome. Someone who has Turner syndrome only has one X chromosome (in their 23rd pair) instead of 2.
After 50 generations, the allele representing dark blue hair color approaches a fitness value of zero. The alternative trait, a hair color of light-sky blue, gets closer to a value of one. What can be stated of the fitness level for this gene that codes for hair color?
The following foot positions cause an S-I glide of the Tibiofibular joint with the supplementary anterior glide is inversion.
What is tibialis anterior muscle?The tibialis anterior muscle is found on the lateral surface of the shinbone of the leg. This bone arises from the upper lateral surface of the shinbone and the lateral condyle of the shinbone. It inserts into the first metatarsal bone and medial cuneiform of the foot.
The actions of tibialis anterior muscle include dorsiflexion and inversion of the foot. This bone arises from the upper lateral surface of the shinbone and the lateral condyle of the shinbone. It inserts into the first metatarsal bone and medial cuneiform of the foot.
Therefore,The following foot positions cause an S-I glide of the Tibiofibular joint with the supplementary anterior glide is inversion.
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What is considered the energy currency of a plant cell that is produced by light reactions.
ATP is a currency for energy (adenosine triphosphate).
In plants, what is ATP?The light energy that is gathered during photosynthesis is what ultimately drives the growth and development of plants. All biological functions, including gene expression, metabolism, and transport, are powered by ATP, which serves as a universal cofactor for cellular energy.
ATP or glucose are the products of photosynthesis?Photoautotrophs convert carbon dioxide and water into glucose and oxygen during the process of photosynthesis. The general equation for photosynthesis is: Using water and carbon dioxide, glucose is produced as a chemical energy source by harvesting solar energy.
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11.4.3 sketch the experimental setup with labels
Setup for an experiment you explain the experiment's methodology and a summary of the collected data in this section.
What is an experimental setup?Explain the process used to get the data. The process could be discussed in a separate section if the experiment is complicated.
In science, a control setup is similar to an experimental setup in that it makes use of the same tools and operating procedures, but there are no variables evaluated there. When there are individuals involved in the experiment, a control group may be used as part of the control setup.
Therefore, in setup for an experiment, you explain the experiment's methodology and a summary of the collected data in this section.
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explain, from an evolutionary and geological time perspective, why there are qualities that are unique to protists, and why protists are so diverse as a group.
Protists are an anthropogenic assemblage of phylogenetically unrelated groups and are therefore highly diverse in terms of biological and ecological traits.
One of the most striking features of many protists is the presence of certain types of motile organelles that can be easily seen with a light microscope. Some forms can move by gliding or swimming but the majority do so using flagella or tiny hairs known as flagella and cilia respectively.
Protists are organisms whose cells have membrane-enclosed nuclei and are not adapted to other kingdoms. Most protists are unicellular. Some people make their own food but most people eat or absorb food. Most protists use flagella pseudopodia or cilia to move.
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