The new idea about succession came from studying the eruptions of mount saint Helen would be both biological ancestors and alien species play a role in succession.
The term "primary succession" refers to succession that starts in a location devoid of any remains of a previous society. As an illustration, an erupting volcano at Mount Saint Helens, Washington, wiped out all local life. There will be long-lasting changes in this neighborhood. Earth tremors focused on the ground beneath the mountain's north flank signaled the start of the audible volcanic activity.
As these tremors intensified, Mount St. Helens started to release steam and ash via its crater and vents, resulting in a small eruption on March 27. The surrounding volcanoes, which have not erupted in recorded history, will either have minimal or no impact on the chance of an eruption.
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cephalopods have several unique characteristics that set them apart from other mollusks. complete the following sentences about cephalopods with the correct terms.
The complete sentences with correct terms about cephalopods are:
The cephalopod foot has evolved into a series of arms, which are primarily used for handling prey.Among the invertebrates, cephalopods possess the largest brains.Unlike the other classes of mollusks, the cephalopods possess a(n) open circulatory system.Cephalopods can move using jet propulsion by pumping water through the mantle cavity and out of their siphon.Cephalopods undergo direct development and lack a larval stage.Cephalopods are the organisms of the class Cephalopods that belongs to the phylum Mollusca. The examples of cephalopods are: squid, octopus, cuttlefish, nautilus, etc. The animals here are all marine with bilateral symmetry.
Siphon is the organ in cephalopods that helps in locomotion. Its function is to expel water out of the body of organism. This produces a locomotive force.
The given question is incomplete, the complete question is:
Cephalopods have several unique characteristics that set them apart from other mollusks. Complete the following sentences about cephalopods with the correct terms.
The cephalopod ___ has evolved into a series of arms, which are primarily used for handling prey.Among the invertebrates, cephalopods possess the largest ____.Unlike the other classes of mollusks, the cephalopods possess a(n) ____ circulatory system.Cephalopods can move using jet propulsion by pumping water through the ____ and out of their siphon.Cephalopods undergo ____ development and lack a larval stage.To know more about cephalopods, here
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1. How do plants benefit from fungi?
A. Fungi cause growth of plants.
B. Fungi attract light energy to plants.
C. Fungi make nutrients more available to plants.
Answer:
C. Fungi make nutrients more available to plants.
Explanation:
The fungi colonize the root system of a host plant, providing increased water and nutrient absorption capabilities while the plant provides the fungus with carbohydrates formed from photosynthesis. Mycorrhizae also offer the host plant increased protection against certain pathogens.
CHALLENGE QUESTION:
Describe how Cupples bodies regulate (control) blood sugar. Make sure to include the organs,
Hifferent hormones released into the blood, and how each lowers or raises blood glucose. Use as
much detail as you can!
When blood sugar levels rise cells in the pancreas release insulin which causes the body to absorb glucose from the blood and bring blood sugar levels down to normal levels.
The human body wants to keep blood sugar levels within a very narrow range. Insulin and glucagon are the hormones that do this. Both insulin and glucagon are called pancreatic endocrine hormones because they are secreted by the pancreas. The main function of the pancreas is to maintain healthy blood sugar levels. A large gland behind the stomach.
Produces insulin glucagon and other hormones. Diabetes occurs when the pancreas does not produce enough insulin or when the body does not use insulin properly. The endocrine system is responsible for regulating many processes in the body. The following list provides a sample of the roles of glands in the endocrine system. Pancreas Regulates blood sugar levels.
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which of the following regulatory elements is not composed of dna sequences? view available hint(s)for part b which of the following regulatory elements is not composed of dna sequences? promoter-proximal elements activators silencers enhancers
Activators are regulatory elements is not composed of DNA sequences.
In Eukaryotes transcriptional activators are composed of a DNA binding domain with a separated activation domain , These proteins also have a dimerization module.
Transcriptional activator is a protein that speeds transcription of a gene . Activators are the components that have positive control over gene expression, as they function to promote gene transcription. Their are several gene regulatory elements, including promoters, enhancers, silencers, and insulators . Regulatory Elements are Located in Promoter, Intergenic, and Intronic Regions.
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Choose the reasons that low-income and minority groups often suffer more from the effects of air pollution. a. Nutritional deficiencies weaken the immune systems of people with low incomes. b. Low-income and minority groups encourage factory construction to bring jobs. c. Low-income and minority groups often have fewer resources to fight for their rights, d. Major pollution facilities are often placed in low-income or minority neighborhoods. e. Low-income and minority populations are predisposed to respiratory diseases.
The reason that low-income and minority groups often suffer more from the effects of air pollution is because major pollution facilities are often placed in low-income or minority neighborhoods and is denoted as option D.
What is Pollution?This is referred to as the introduction of contaminants or foreign substances into the environment and there are various sources such as wastes from companies, burning of fossil fuel etc.
In most climes, major pollution facilities are often placed in low-income or minority neighborhoods due to the low population and the land being available for such purpose which increases the risk of the inhabitants suffering from its effect.
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Archaea have very diverse environmental requirements and tolerances. From what you have learned about them, which among the following conditions or substances do all archaeans require for survival and reproduction?.
Carbon is required by Archean's for their survival and reproduction.
Archaea devote in the functioning of ecosystem and vegetation by archiving functions involved in nutrient cycling, some stress response, and phytohormone biosynthesis and by interacting with both bacteria and their hosts.
Most Common characteristics of Archaebacteria are presence of tRNAs and ribosomal RNAs in their genome, other main characteristics is they don't contain peptidoglycan cell walls, on the place of peptidoglycan their present largely proteinaceous coat.
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In guinea pigs, an allele for rough fur (r) is dominant over an allele for smooth fur (r), and an allele for black coat (b) is dominant over an allele for white fur (b). What would be the genotype of a guinea pig with smooth black fur?.
The smooth black guinea pig genotype is rr, BB. The correct option is d.
What is genotype?Genotype usually refers as the genetic makeup of an organism. In other words, it represents the entire gene pool of an organism. The term can also be used to refer to alleles or variants of genes carried by an organism in a more specific sense. The letter R stands for the recessive smooth coat allele and the uppercase R stands for the dominant rough coat allele. The genotypes that may result from mating heterozygous (Rr) and homozygous (aa) guinea pigs are Rr and rr.
Each genotype has a 50% chance of generational occurrence. However, the presence of her nine smooth-haired offspring from both heterozygous (Rr) and homozygous (rr) parents suggested a low frequency of chromosomal recombination in this cross.
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The complete question is as follows:
In guinea pigs, an allele for rough fur (R) is dominant over an allele for smooth fur (r), and an allele for black coat (B) is dominant over an allele for white fur (b). What would be the genotype of a guinea pig with smooth black fur?
RR, BB
Rr, Bb
rr, bb
rr, BB
An individual with the genotype aabb makes gametes. An individual with the genotype aabb also makes gametes. How many gamete types do they have in common with respect to these two genes?.
An individual with the genotype AaBB and an individual with the genotype AaBb both make gametes. 2 types of gametes they have in common with respect to these two genes.
A dihybrid cross is a mating experiment between two organisms that are genetically identical in two ways. A heterozygous hybrid organism is one that carries two different alleles at a specific genetic position, or locus. Mendel used a dihybrid cross to combine two opposing traits, such as the color and shape of seeds, for crossing. He crossed the wrinkled-green seed with the round-yellow seed. In the F1 generation, he only got round-yellow seeds.
The term F1 generation refers to the offspring produced by a cross between two different types.
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students conducted an experiment to determine the effect of light intensity on the rate of photosynthesis. they punched 40 leaf disks from spinach leaves and used a syringe partially filled with water to pull the gases from the leaf disks so that all leaf disks sunk to the bottom of the syringe. ten (10) leaf disks from the syringe were placed in each of four cups and covered with 50 ml of the solutions as indicated below. all leaf disks were resting on the bottom of the cups when the experiment began. the volume of liquid in each cup and the temperature of the solutions were held constant. all cups were placed 0.5 meters from the designated light source. a large beaker of water was placed between the light and the cups to act as a heat sink to prevent a change in temperature. at the end of 10 minutes, the number of disks floating in each cup was recorded. trial grams of baking soda (co22 source) wattage of light bulb disks floating at 10 minutes 1 0.5 25 3 2 0.5 50 5 3 0.5 75 9 4 0 75 0 use your knowledge of the mechanism of photosynthesis and the data presented in the chart to determine which of the statements below is a correct explanation for the student's data. students conducted an experiment to determine the effect of light intensity on the rate of photosynthesis. they punched 40 leaf disks from spinach leaves and used a syringe partially filled with water to pull the gases from the leaf disks so that all leaf disks sunk to the bottom of the syringe. ten (10) leaf disks from the syringe were placed in each of four cups and covered with 50 ml of the solutions as indicated below. all leaf disks were resting on the bottom of the cups when the experiment began. the volume of liquid in each cup and the temperature of the solutions were held constant. all cups were placed 0.5 meters from the designated light source. a large beaker of water was placed between the light and the cups to act as a heat sink to prevent a change in temperature. at the end of 10 minutes, the number of disks floating in each cup was recorded. trial grams of baking soda (co22 source) wattage of light bulb disks floating at 10 minutes 1 0.5 25 3 2 0.5 50 5 3 0.5 75 9 4 0 75 0 use your knowledge of the mechanism of photosynthesis and the data presented in the chart to determine which of the statements below is a correct explanation for the student's data. cup 4 had the slowest rate of photosynthesis because it had the least baking soda. cup 3 had the same rate of photosynthesis as cup 1 because they had the same ratio of disks floating to wattage of light. cup 2 had the highest rate of photosynthesis because 5 disks were floating at the end of 10 minutes using a 50 watt light bulb. cup 1 had a low rate of photosynthesis because 0.5 grams of baking soda did not provide a sufficient amount of co2.
Cup 4 had the least amount of baking soda, which resulted in the fastest rate of photosynthesis.
How did photosynthesis come into being?According to the endosymbiotic theory, the earliest eukaryotic cells acquired photosynthetic bacteria (via endocytosis) to create the first plant cells. Consequently, chloroplasts could be photosynthesis bacteria that have evolved to live inside the cells of plants.
Which plant emerged first?Cooksonia, which originated in the late Middle Silurian around 425 million years ago, is widely perceived as the earliest fossilized vascular land plant. It was a tiny plant that stood only a few centimeters tall. It contained sporangia (structures that produce spores) at the terminals of its leafless stalks.
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Which of the following scientist(s) received a Nobel Prize in Chemistry for their discovery that RNA can be both a substrate and an enzyme?
A) A. I. Oparin
B) Stanley Miller
C) Sidney Fox
D) Graham Cairns-Smith
E) Thomas Cech and Sidney Altman
Thomas Cech and Sidney Altman received the Nobel prize in chemistry for their discovery that RNA can be both a substrate and an enzyme.
Brief about Thomas Cech and Sidney Altman?For their discovery that RNA actively facilitates chemical reactions in cells, molecular biologist Sidney Altman and Thomas R. Cech (1947-) were jointly awarded the 1989 Nobel Prize in chemistry. Altman and Cech independently identified a novel function for RNA.
It was once thought that only proteins could engage in enzymatic activity, which is the induction and acceleration of essential chemical events within living cells. They made the ground-breaking finding that RNA, which was previously thought of as a means of transporting genetic information throughout the cell, could also serve as an enzyme. This finding shed light on how cells work and created new scientific and biotechnological disciplines.
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Can someone help me with this one please
Answer:
I'm pretty sure the 3rd one is correct.
Explanation:
Mitosis helps to make things grow (for example, trees)
Which of the following is not one of the mechanisms by which animals exchange heat with their environment?
A. Conduction
B. Convection
C. Evaporation
D. Metabolic heat production
E. Thermal radiation
Metabolic heat production is not the mechanism which support animal to exchange heat with environment.
What is Metabolic heat production?The heat produced during muscle metabolism in animals is known as metabolic heat generation. ATP must be continuously available for muscle function. The oxidation of metabolites in the mitochondria, a process that necessitates oxygen, produces ATP.
Shivering and non-shivering thermogenesis are the two methods of raising body temperature through metabolic heat production. Brown fat, which has specialized mitochondria that create significant amounts of heat energy when the fat is "burned," is involved in non-shivering thermogenesis. Brown fat is activated by hormones that are released when it is cold outside, which raises metabolic rate and, in turn, body temperature.
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A scientist is examining a pedigree that includes several generations of an organism with XX/XY chromosome sex determination.
Which pattern of inheritance would support the hypothesis that the trait being studied is a recessive sex-linked trait found on the X chromosome?
B
A. The trait is only expressed in males who have a father with the trait. The trait is expressed in half of the female organisms and all of the
male organisms.
C. The trait is mostly expressed in males who have a maternal grandfather with
the trait.
D.
The trait is mostly expressed in females who have a paternal grandmother with the trait.
Answer:
C. The trait is mostly expressed in males who have a maternal grandfather with the trait.
Explanation:
A pedigree chart displays a family tree and shows the members of the family who are affected by a genetic trait.
Starting from glucose and utp and atp, how many high-energy bonds are broken/consumed to add that glucose to a glycogen molecule?.
There are 2 molecule which high-energy bonds are broken/consumed to add that glucose to a glycogen molecule.
The biological process through which glycogen degrades into glucose and glucose-1-phosphate would be known as glycogenolysis.
The metabolic process called cellular respiration converts glucose to ATP. Glycolysis, pyruvate oxidation, citric acid as well as Krebs cycle, as well as oxidative phosphorylation are the phases of cellular respiration.
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Which of the following results of Thomas Hunt Morgan's experiments with white-eyed mutant flies was unexpected in light of Mendelian genetics?
Morgan started raising the mutant white-eyed flies and discovered that after one generation, just the males had the feature. Morgan discovered that the genetic component governing fly eye color was located on the same chromosomal that defined sex during more breeding studies.
The color of a bird's wings absorbs ambient light. Butterfly color pigmentation affects the phenotypic manifestation of wing form.
Morgan found a mutation that changed the hue of a fly's eyes. He noticed that male and female flies inherited the mutation in distinct ways. Morgan came to the conclusion that the eye color gene must be placed on the X chromosome depending on the inheritance pattern.
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ren is the combining form for kidney which derives from latin, the combining form for kidney which derives from greek is
ren is the combining form for kidney which derives from Latin, the combining form for kidney which derives from Greek is Nephr/o.
Kidney is the main organ of the excretory system that is involved in the filtration of the blood and removal of wastes like ions, salts, waste fluid, etc. The basic unit of the kidney that actually performs all these functions is called a nephron. The kidney is a bean shaped structure which is present in a pair.
Several nephrons together form the kidney. Nephron itself has various components. These are: glomerulus within Bowman's capsule, a proximal convoluted tubule, an intermediate tubule (loop of Henle), a distal convoluted tubule, a connecting tubule, and the collecting duct.
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this word is defined as all the living organisms on earth along with the physical environment in which they live.
Ecosystem is word is defined as all the living organisms on earth along with the in physical environment which they live .
Ecosystem is considered as community of organisms together with their physical environment. Ecosystems comprises of different sizes and can be marine, aquatic, or terrestrial.
Ecosystem can also be termed as collection of all living organisms in a geographic area, together with all the living and non-living things that interact with each other. Living components of the environment are known as biotic factors. Biotic factors include plants, animals, and micro-organisms.
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The child with autism spectrum disorder has difficulty with trust. With this in mind, which of the following nursing actions would be most appropriate?
a. Encourage all staff to hold the child as often as possible, conveying trust through touch.
b. Assign a different staff member each day so child will learn that everyone can be trusted.
c. Assign same staff person as often as possible to promote feelings of security and trust.
d. Avoid eye contact, because this is extremely uncomfortable for the child and may even discourage trust.
c. Assign the same staff person as often as possible to promote feelings of security and trust .
Engage a child with autism spectrum disorder by Create an environment that is not over stimulating the environment should be calm and peaceful. The child will do better if there is no loud music in the background, as it distracts an autistic child from concentrating. It is required to Create a structured environment with predictable routines.
Hence , for treating a autism in child it is required to create a calm environment by removing distractions, loud noise. Relaxation techniques such as counting to 10, deep breathing can also help calm someone with autism in a moment of stress.
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Neisseria gonnorrhoeae is a gram-negative diplococcus that typically causes symptomatic infections in males. The presence of neisseria gonorrhoeae is urethral pus is diagnostic for gonorrhea in males. What would be observed in a positive gram stain?.
The major observation in positive gram stain would be the presence of paired red spheres bacteria, which means that option C should be the right answer.
Gram stain is the test done to identify the bacteria or differentiate them. The stain used is purple in color. If the stain is taken by the bacteria and turns it into red or pink, it implies that bacteria is gram negative. If the bacteria retains purple color, it means that it is gram positive. It is generally done to identify the presence of bacteria or diagnose fungal infections. In case of gram positive stain, the color of bacterial colonies would be red under microscope and since they agglomerate together due to oxidase test, the shape becomes slightly circular. Neisseria gonnorrhoeae is a kind of bacteria involved in affecting the reproductive glands, cervix or urethra if the person is suffering from sexually transmitted diseases. It can also be passed on to other person during sexual contact.
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To refer to complete question, see below:
Neisseria gonorrhoeae is a Gram-negative diplococcus that typically causes symptomatic infections in males. The presence of Neisseria gonorrhoeae is urethral pus is diagnostic for gonorrhea in males. What would be observed in a positive Gram stain?
a. paired red rods
b. paired purple rods
c. paired red spheres
d. paired purple spheres
If tall (T) is dominant to short (t) what is the phenotype of a TT plant ?
A student is provided with a specimen of tilapia of length 10cm. The student made a drawing of the specimen of length 12cm. Calculate the Magnification of the drawing.
Answer:
1.2 is the magnification of the drawing
Explanation:
According to the question,
Actual length of tilapia specimen provided to a student = 10 cm
Drawing length made by student of the specimen= 12 cm
[tex] \rm Magnification \: of \: the \: drawing= \dfrac{Actual \: length \: of \: the \: specimen}{Drawing \: length \: of \: the \: specimen} \\ \\ \rm= \frac{12}{10} \\ \\ \rm = 1.2[/tex]
The signature animal morphological feature called the __________ is found in rotifers and aids in feeding.
Answer:
corona (a cluster of cilia)
The signature animal morphological feature called the corona is found in rotifers and aids in feeding.
Explanation:
waterborne infections refer to: a. person to person transmission of a disease due a shortage of water b. an infection that water helps to spread c. an infection transmitted by insects that breed in water d. an infection that occurs when water with the pathogen is ingested
Waterborne infections refer to an infection that occurs when water with the pathogen is ingested. So the correct option is d.
Waterborne infections or illness is mainly caused by swallowing impure recreational (lakes, rivers, etc.) or even drinking water. Many waterborne infections happen by eating/drinking food or beverages, from contact with animals or their environment, through person-to-person, or breathing in impure water droplets.
Contaminated water could carry viruses such as Hepatitis A and E, and bacteria like E.coli (E.coli can be passed from hand to hand, such as via vendors of street food or food handled by someone carrying E.coli bacteria. It can lead to food poisoning).
The result: dangerous diseases like cholera and typhoid fever. Some other waterborne diseases include diarrhoea, dysentery, polio, and meningitis.
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A mutation in which types of cells would only affect just the organism and not future generations of offspring.
A mutation in which types of cells would only affect just the organism and not future generations of offspring is called a somatic mutation.
Somatic mutations are change in a person's DNA that occur after conception to any cell that isn't a germ cell (egg or sperm cell). Somatic mutations don't pass from parents to their children (not hereditary) and happen sporadically or randomly, without the mutation existing in a person's family history.
They also can't pass to future generations. These mutations are frequently caused by environmental factors, such as exposure to ultraviolet radiation or certain chemicals. The somatic mutation may occur in any cell division from the first cleavage of the fertilized egg to the cell divisions that replace cells in a senile individual.
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Magnesium is an alkaline earth metal. With which group of elements is magnesium most reactive?.
Group 2A (or IIA) of the periodic table are the alkaline earth metals which is more reactive
Alkaline earth metals are good conductors. They have low ionization energies, low electron affinities, and low electronegativities. The alkaline earth metals have an oxidation state of +2 and an S subshell electronic structure occupied by two electrons denoted by Xs2. They are highly reactive under standard conditions. They have two outer valence electrons that are easily lost. They all exist in nature, but are found only in compounds and minerals, not in elemental form. They react with halogens to form compounds called halides. Alkali metals are group 1 metals of the periodic table, while alkaline earth metals are group 2. The main difference between alkali and alkali is that alkali metals have one valence electron and alkaline earth metals have two valence electrons
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Piero Ginori Conti invented the first geothermal power generator in the city of
Larderello.
Boise.
Rome.
Bath.
will an atom of iodine look similar to rubidium and fluorine?
No, rubidium and fluorine are not similar to atoms of iodine.
What element is most similar to iodine?The astatine atom is an extremely radioactive element and it is the heaviest known halogen. Its chemical composition is believed to be similar to those of iodine. Despite living as a halogen, iodine shares some of the usual physicochemical behaviors of the sulfur atom.
These structures have been well distinguishing. Iodine and iron are both minerals needed for good health because table salt holds the mineral, as does most of the farmland iodine in which food is grown on the other hand, iron atom exists in large amounts around the world.
So we can conclude that Iodine is a non-metallic, dark-gray/purple-black, lustrous, solid element. Iodine is the most electropositive halogen.
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Is uracil in dna or rna.
Answer: RNA
Explanation:
Uracil is used in RNA in place of Thymine in DNA.
How did the invention of the light microscope lead to the development and refinement of cell theory over time?.
Due to their resemblance to monastic cells or apartments, Hooke spotted formations on wood that were box-shaped and gave them the name "cells."
What is a microscope used for?An equipment used to magnify everyday pieces called a microscope. Though at the cell level, some binoculars can be used to study an object, enabling researchers to view a cell's form as well as its nucleus, mtdna, and other organelles.
The microscope is what?A microscope is really a component of the scientific apparatus that enables us to observe very minute objects that are normally invisible to the eye. Magnification is the process of making objects appear larger using lenses similar to those in spectacles or a magnifying glass.
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Select the correct answer from each drop-down menu.
Cancer is a disease that involves uncontrolled cell division
Cancer is a disease characterized by uncontrolled cell division and tissue invasion (due to DNA alterations).
Cancer, what is it?Cancer is fundamentally a mitotic illness in which the cancer cell ignores or overrides the usual mitotic "checkpoints" that control the process. When a single cell undergoes a transformation into a cancer cell, cancer is said to have started.
Is unchecked meiosis or mitosis the cause of cancer?Every cell's genes play a significant role in controlling mitosis. This control may not always work. If it only affects one cell, it has the potential to spread and create other uncontrolled cells through self-replication. They are malignant cells.
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