The jaws of arthropods are considered modified appendages because they have evolved into multiple forms adapted to various modes of feeding.
What is the function of appendages in arthropods?Appendages of arthropods are the external features of projections from the head or body segments used for feeding, mobility, piercing, chewing, sucking and admonition. Arthropods have modified jointed paired appendages where their ancestral forms would have had more legs.
Unlike the annelids, arthropods' jointed appendages give them greater flexibility and range of movement. The appendages are found in the mouthparts, antenna, legs. Some of these organisms are crustacean, arachnids, insects, etc.
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What kind of sugar is in dna triose or Penros or hexose
Answer:
Deoxyribose
Explanation:
It has the same amount of sugar as ribose
This usually requires a minimum of four to six sentences per question, though questions with multiple parts may require a longer answer in order to be complete. The response may source the textbook or another credible source (with citation) to justify their answer (at least two reference).
What is PCR and it’s steps? Briefly explain the steps.
What do you need to add to your PCR tube?
What are some of the advantages of PCR? Name 2 and explain.
What do the bands in the agarose gel represent? List two factors affect the rate of DNA migration within the agarose gel.
PCR is a polymerase chain reaction and involves denaturation, annealing, and extension. PCR tube includes primers, DNA, Taq polymerase and water. The main advantages of PCR are the versatility to obtain a given DNA sequence amplified and bands in the agarose gel represent different samples.
What is the Polymerase Chain Reaction?The Polymerase Chain Reaction or PCR is a technique widely used in molecular biology labs to amplify a given DNA sequence lesser than 1,300 base pairs, which involves successive cycles of denaturation to separate both DNA strands, annealing using oligonucleotides called primers and then the extension of the DNA sequence.
Therefore, with this data, we can see that the Polymerase chain Reaction or PCR is a versatile technique to obtain genetic information of a given sample by using an agarose gel that separates samples after PCR by electrophoresis.
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What are the three main differences between DNA and RNA?
Answer:
The three main differences between DNA and RNA are:
-DNA is double-stranded, while RNA is single-stranded
-DNA is made up of deoxyribonucleotides, while RNA is made up of ribonucleotides
-DNA contains the sugar deoxyribose, while RNA contains the sugar ribose
Explanation:
The three main differences are :
1.RNA contains uracil while DNA contains thymine
2.RNA has sugar ribose while DNA has deoxyribose.
3.RNA is single stranded while DNA is double stranded .
What is the structure and function of DNA?
The organic components known as nucleic acids can be found in the form of DNA or RNA in all living things. These nitrogenous bases, sugar molecules, and phosphate groups are joined by various bonds in a series of sequences to form these nucleic acids. The fundamental genetic make-up of our body is defined by the DNA structure. In actuality, it describes the genetic composition of almost all life on earth. This holds true for viruses as well because the majority of these organisms have either RNA or DNA as part of their genetic makeup. As an illustration, some viruses may have DNA as their genetic material, while others may have RNA. RNA is present in the Human Immunodeficiency Virus (HIV), which after attaching to the host cell, transforms into DNA.
So, the DNA is double stranded while RNA is single stranded.
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Which example displays a type of point source pollution?
• A.
rainwater carrying toxic chemicals and debris to a river
B.
melted snow mixed with debris flowing into a city
C.
untreated water from a factory flowing into a lake
D.
smoke released by trucks
E
rainwater mixing with garbage on the sidewalks of a street
The example displaying a type of point source pollution is: (C) untreated water from a factory flowing into a lake
Pollution is the presence of contaminants in the environment. The pollution can be of air, soil, water, or even noise. The major cause of pollution is the human action and synthetic substances but some natural products can also be the causing agent of pollution.
Point source pollution is the one spread through one single source like pipe, ship or factory smokestack that pollutes a larger area. Like untreated water from factories can pollute the entire water body. Similarly chimney smoke of industries can pollute the air of whole city.
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which animal is most closely related to humans?
Chimpanzees are the animal most closely related to humans.
Ever since researchers sequenced the chimp genome in 2005, they have known that humans share about 99% of our DNA with chimpanzees, making them our closest living relatives.
How are humans related to chimpanzees?
Ever since researchers sequenced the chimp genome in 2005, they have known that humans share about 99% of our DNA with chimpanzees, making them our closest living relatives.
Are chimpanzees basically humans?
Chimpanzees are genetically closest to humans, and in fact, chimpanzees share about 98.6% of our DNA.
Thus, chimpanzees are most closely related to humans.
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What is meant by logistic growth?
Logistic growth takes place when a population's per capita growth rate decreases as population size approach a maximum imposed by limited resources, the carrying capacity( K).
What happens during logistic growth?
When resources are limited, populations exhibit logistic growth. In logistic growth, population expansion decreases as resources become scarce, leveling off when the carrying capacity of the environment is reached, resulting in an S-shaped curve.
Is Human growth exponential or logistic?
The world's human population is growing at an exponential rate.
What is logistic growth used for?
The logistic function models the exponential growth of a population but also considers factors like the carrying capacity of the land.
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functions of the liver include:______.
FUNCTIONS OF LIVER
Blood reservoir: As liver is expandable organ, large quantities of blood can be stored in its blood vessels. Storage of extra blood occurs especially in cases of cardiac fallen with peripheral congestion.Liver's macrophage system serves a blood cleansing function: Muffler cells are large phagocytic macrophage that line the hepatic solid, efficiently cleanser blood as it passes through hepatic venous sinuses.Carbohydrate Metabolism:Storage of large amount of glycogenConversion of galactose and fructose to glucoseGluconeogenesisFormation of many chemical compounds form intermediate products of carbohydrates metabolism.Glucose buffer (Maintaining normal blood glucose concentrationFat Metabolism:Oxidation of fatty acid to supply energy for other body functionsSynthesis of large quantities of cholesterol, phospholipid and most lipoproteinSynthesis of fatty from protein and carbohydratesProtein Metabolism:Deamination of amino acidFormation of urea for removal of ammonia from the body fluidsFormation of plasma proteinsInterconversion of various amino acids and synthesis of other compounds from amino acids.Storage storage for vitamins: Vitamin A, Vitamin D & Vitamin B12Stored iron as ferritinForms blood distances used in coagulation: Fibrinogen, prothrombin, accelerator globulin, factor VII and several other important factors.Removes or excretes Drugs, Hormones and Other substancesBile section: 600-1000 mL/dayHow does the corrigated cardboard digestive/circulatory system work
The circulatory system maintains blood flow throughout the body, while the digestive system is in charge of the ingestion, breakdown, absorption, and excretion of nutrients and minerals.
The human body has numerous systems, each of which is in charge of a certain function, and they all work together to provide the necessities for life. To make sure the body gets all it needs to keep working, many of these systems must communicate with one another. The digestive system and the circulatory system are two of these systems. Doing so guarantees that each portion of the body receives the essentials for function. Both methods work together to provide nourishment to the many-body sections.
So, we may say that the circulatory system maintains blood flow throughout the body. In contrast, the digestive system is responsible for the ingestion, breakdown, uptake, and elimination of nutrients and minerals.
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Which rate of evolution BEST describes a fossil record that shows many different forms of the same organism over a long period of time?
Sedimentary rocks and fossils are the best evolution rate that describes a fossil record from many different forms of the same organism over a long period of time.
The highly organized order in which fossils are discovered in sedimentary rock layers is known as the fossil record.
It suggests that at least 3.5 billion years ago, there were living forms on Earth.
Fossils, which also show how different species evolved, provide undeniable evidence that ancient organisms were unique from those that exist now. The comparative anatomy of modern animals and fossils make up the morphological, or anatomical, record.
what is sedimentary rocks?
Sedimentary rocks are constructed from pre-existing rocks or remains of extinct creatures. They emerge from deposits that amass on the Earth's surface. Identifiable bedding or layering is typically present in sedimentary rocks.
Therefore, Sedimentary rocks and fossils are the best evolution rate that describes a fossil record from many different forms of the same organism over a long period of time.
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Another type of digestion in the stomach produces physical changes. Describe the actions of the stomach that lead to these physical changes.
Answer:
When food is physically changed, mechanical digestion occurs. Food is broken into smaller parts and mixes continually with enzymes and other gastric juices. Mechanical digestion occurs in the mouth, stomach, and small intestine. Food is chemically changed in digestion when new, smaller substances are formed. These chemical changes are examples of chemical digestion. Chemical digestion begins in the mouth when enzymes in saliva begin to break down carbohydrates. Most chemical changes in digestion occur in the small intestine. Large molecules of food are broken down into smaller molecules that can be absorbed by our cells. Carbohydrates, proteins, and fats are broken down in different parts of the digestive system using different kinds of enzymes. Different kinds of small molecules are formed by these processes.
Explanation:
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Which of the answer choices is an example of negative feedback altering homeostatic control?
a. A person with a bacterial infection runs a fever and his body temperatures rises and stays elevated for several days.
b. The concentration of salt in a person's urine increases after that person eats a large bag of salty chips.
c. A person's heart rate remains elevated over the course of a long run.
d. The production of oxytocin (a hormone) increases in a pregnant woman's body as oxytocin levels in her body rise.
A negative feedback altering homeostatic control is option B: The concentration of salt in a person's urine increases after that person eats a large bag of salty chips.
The ability of the body to maintain its normal state in the face of changes in the external environment is known as homeostasis. The ion concentration can be controlled via homeostasis. The desire to excrete salt through urine also grows as the body absorbs salt from eating chips. Therefore, negative feedback loops that change homeostasis are used to maintain the salt's ionic concentration. Therefore, option B marks the correct choice.
The inclusion of negative feedback loops helps to maintain homeostasis. These loops behave in the opposite direction from the stimuli that causes them. If the body temperature is high, for instance, the negative feedback loop will work to lower it toward the set point, or the desired value.
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In a particular strain of mice. Fur coat color is either black or brown, where black
(B) is dominant to brown (b). A homozygous dominant mouse mates a mouse with
brown fur.
What are the genotypes of the two individuals?
What proportion of their offspring will have black fur?
BB or Bb is the genotype of the two individuals. More than 90% proportion of their offspring will have black fur.
Black mice must have at least one B allele since the color is dominant. Either BB or Bb could be their genotype.
Because every offspring will have at least one dominant allele for black fur, which will outweigh any allele for brown fur, it is expected that all offspring will have black fur, so the proportion will be more than 90%.
The mix of genes found in the sex cells or gametes (ova and sperm) that were used in a child's conception determines the genotype of that child. From each parent came one sex cell. The gene for each attribute is often only present in one copy in sex cells.
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can someone give me Biodiversity project ideas for my project?
Answer: Water would keep the population at 1,000 armadillos. In this case, water is the limiting factor.
Explanation:
During adolescence, adrenal glands will mature via a process known as what?
Answer: Adrenarche
Explanation:
What happens in the process of gravitational condensation?
In the process of gravitational condensation, an object decreases in size due to the collision of materials.
When two materials collide, an object shrinks in size. Materials from solar nebulae are used to create gas particles. Materials from the solar nebula are converted into solid particles.
The force that pulls objects with mass toward the Earth and attracts them there is known as gravitational force. It should be understood that when heated water transforms from a liquid condition to a gaseous state, the size will decrease.
We observe that the cohesive forces of fluids that cause droplets to coalesce and bond together, as well as the quantum condensation of a BEC, are comparable to the effects of gravity on matter.
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Which describes a substance that is
pure and made of only one type of
atom throughout?
A. compound
B. molecule
C. isotope
D. element this
Answer:
element
Explanation:
An element is a substance that consists of only one type or kind of atom. An element is a pure substance as it cannot be broken down or transformed into a new substance even by using some physical or chemical means.
Answer:
d) Elements
Explanation:
An element is a substance that is pure and made of only one type of atom throughout. Hence, the option (d) is correct answer.
Can translation still occur without the start codon?
A semipermeable membrane has a 4 percent salt solution on the right side and a 12 percent salt solution on the left side. What will most likely occur?
A. osmosis of water from the right to the left
B. passive transport of sale from the right to the left
C. osmosis of water from the left to the right
D. facilitated diffusion of salt from the left to the right
Water will flow from the right side of the plasma membrane to the left side of the membrane due to osmosis. Hence, the correct answer is option A.
How do molecules move across the cell membrane?The molecules move across the cell membrane. Water moves from high concentrations to low concentrations by osmosis. Here, the left side has a 12% salt solution. Out of 100, the salt concentration is 12. The right side has 4%. Out of 100 parts, 4 parts of salt are present. The water concentration is higher on the right side (96 parts ). Hence, the water will move from the right side to the left side by the process of osmosis.
Hence, option A is the correct answer.
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Which of these processes is required for a reaction but not for a reflex?
motor neuron
interneuron
sensory receptor
integration in the cerebrum
Answer:
integration in the cerebrum
Explanation:
this is because the reflex arc, which controls the reflex action,occurs in the spinal cord.The ascending neuron only picks the information to inform the brain of what has happened, after it has actually happened
What other component does nuclear power utilize in order to
create electricity?
a Air
b Water
c Mercury
d None of the Above
Answer:
Explanation: The answer would be water because , nuclear power plant would heat the water so that it could produce steam .
What part is unique to the kingdom Monera?(1 point)
Responses
Nucleus
Nucleus
Ribosomes
Ribosomes
DNA
DNA
Nucleoid
ribosomes is unique to the Monera
Cross a YyLl (heterozygous parent with dominant traits) with yyll (homozygous parent with recessive traits). Look at the number of genotypes of the F1 generation:
YyLl: 400
Yyll: 100
yyLl: 100
yyll: 400
1. Which offspring are the recombinant offspring in this cross?
The parents here are YyLl (heterozygous parent with dominant traits) with yyll (homozygous parent with recessive traits). The recombinant species are yyLl: 100 and Yyll: 100.
What is the dominant and recessive genotype ?The genetic expression that expresses itself are the genetic traits that get expressed in the individual whereas the one that do not are called as recessive genotype.
Here, YyLl is the heterozygous dominant species where Y represents the dominant trait over y and T represents the dominant trait over t. The traits are presented both as dominant and the recessive parents is yytt.
Recombinant species will show traits that are both mixed where the heterozygous dominant and the recessive traits gene will express itself and these are Yyll: 100 and yyLl: 100.
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digestion of fatty acids takes place in which organelle?
Digestion of fatty acids takes place in the peroxisome.
Where is the green florescence gene added in the plasmid? Why?
The place that the green florescence gene can be added in the plasmid is that the promoter of a gene from another organism can be placed downstream of the GFP gene.
What is the GFP about?
Most green florescence gene fusion proteins are created by attaching GFP to the host protein's N- or C-terminus. However, some host proteins may lose their functionality as a result of this. As an alternative, GFP can be inserted into the host protein's midsection.
Note that from the modification of DNA to the expression of a protein to the detection of a trait, the GFP expressed from the pGLO plasmid exemplifies the fundamental principles of biology. Only the cloned GFP glows out of the hundreds of proteins in the bacterial proteome.
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Lollllllllllllolololololol HELPP
Answer: Chlorophyll
Explanation:
Chlorophyll's job in a plant is to absorb light—usually sunlight. The energy absorbed from light is transferred to two kinds of energy-storing molecules. Through photosynthesis, the plant uses the stored energy to convert carbon dioxide(absorbed from the air) and water into glucose, a type of sugar.
List and explain FIVE (5) uses of the beta-amylase enzyme.
The FIVE (5) uses of the beta-amylase enzyme include;
.β-Amylase is used in the mashing and brewing process. It produces enough maltose, which is the most important fermentable sugar.
.It is used in the production of malt and beer as an additive in foodstuff.β-Amylase at controlled temperature breaks down starch into maltose, dextrins, oligosaccharides, and glucose molecules.
.β-Amylase is utilized in the production of maltose-rich syrup.
.It is used as a sweetener in food and pharmaceuticals due to its mild sweetness and lack of color formation.
. β-Amylases also slow down starch retrogradation, thus maintaining the quality of bread and preventing it from drying.
What is a β-Amylase enzyme?
This enzyme speeds up the hydrolysis of the second α-1,4 glycosidic bond, cleaving off two glucose units (maltose) at a time acts . They act on starch, glycogen, and other polysaccharides and oligosaccharides to give tt-maltose by an inversion.
Beta-amylase can be seen in bacteria, fungi, plants, bacteria, and cereals. During the ripening of fruit, β-amylase disintegrates starch into maltose, giving rise to the sweet flavor of ripe fruit.
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Cell membranes are made mostly of _____.
Group of answer choices
A. oxygen
B. phospholipids
C. sugar
D. water
Answer:
B. phospholipids
Answer: Phospholipids
Explanation: Phospholipids are a major component of cell membranes. It's also known as a lipid bilayer.
13) Atoms bond with other atoms when they need to fill their shell
Atoms bond with other atoms when they need to fill their shell is true .
What is atom ?When two atoms share a pair of electrons, covalent bonding results. In order to increase their stability, which is attained by forming a complete electron shell, atoms will covalently connect with one another. Atoms can stabilize themselves by filling up their outer electron shell by sharing their outermost (valence) electrons.
Atoms, which are very little particles of matter, are what define a chemical element specifically. The core nucleus of an atom is surrounded by one or more negatively charged electrons.
ATOM BOND :Whatever atoms the shared electrons originally belonged to or how many electrons are involved, a bond is simply the sharing of electrons between two or more atoms to satisfy their demand for an unoccupied final shell.
Hence, your statement about atom is True .
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Which of the following is
true about bacteria?
A. They lack DNA.
B. They are single-celled organisms.this
C. They have membrane-bound organelles.
D. They are eukaryotes.
Put the following events of translational elongation (the stage in translation that occurs after initiation) in the order that they occur, beginning with the first step at the top.
1. The ribosome moves down the mRNA by one codon, and a tRNA carrying the third amino acid comes into place.
2. After the first amino acid has been brought to the ribosome, a tRNA carrying the second amino acid of a protein binds to the second codon.
3. A covalent bond forms between the first and second amino acids.
4. The ribosome releases the first tRNA.
5. The ribosome releases the second tRNA.
6. A covalent bond forms between the second and third amino acids.
The following events of translational elongation (the stage in translation that occurs after initiation) in the order that they occur, beginning with the first step at the top. A covalent bond forms between the first and second amino acids.
At some stage in translation elongation, the ribosome ratchets along its mRNA template, incorporating each new amino acid and translocating from one codon to the next. The elongation cycle requires dramatic structural rearrangements of the ribosome.may additionally nine, 2014
Translation elongation calls for particular aminoacyl TRNAs being escorted to the ribosome with the aid of GTP-coupled elongation factor. Elongation calls for movement alongside the ribosome-coupled mRNA, three nucleotides at a time to add amino acids which have been certain to TRNAs.
In the elongation step, the extending of the amino acid sequences and the formation of the amino acid chain is formed. This step is one of the primary and larger steps in translation wherein some of amino acids are delivered to the chain and related collectively with the aid of peptide bonds to form polypeptide bonds.
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