Answer: electrons being shared between atoms
Explanation:
The size of a food Web is límited by the Number of
Answer:
The amount of carbon and energy entering it.
Explanation:
The food chain is limited because " only 10% of the energy from producers get transferred to the level of primary consumer"
Hope this Helps
why does amino acids decrease in ileum
Answer:
The two major pancreatic enzymes that digest proteins in the small intestine are chymotrypsin and trypsin. Trypsin activates other protein-digesting enzymes called proteases, and together, these enzymes break proteins down to tripeptides, dipeptides, and individual amino acids.
Compare and contrast convergent and divergent evolution. Provide an example for each.
Answer:
Divergent evolution occurs when two separate species evolve differently from a common ancestor. Convergent evolution occurs when species have different ancestral origins but have developed similar features.
example i guess: the similarities between the hummingbird and the hummingbird moth.
PLEASE PLEASE ANSWER ASAP FOR CHANCE OF BRAINLIEST!!!
Photosynthesis Virtual Lab
Summarize the results and provide an explanation or reasoning for what was observed. How does light color affect the rate of photosynthesis? Why does the color of light matter?
Answer:
The lights higher on the light spectrum, like blue would have the fastest rate of photosynthesis because the energy is the highest. the green light would have the slowest rate because the chlorophyll inside of the leaves reflects green light, so it would not be absorbed as mich as the other colors. The color matters because the color or wavelength of light does affect photosynthesis, which is how plants can create their own food.
A cell is grown in a medium with radioactive amino acids for five minutes. The radioactive amino acids are able to be transported into the cell and assimilated into the proteins that are being assembled. After the cells are removed from the radioactive culture, the level of radioactivity is monitored at different time points. It is found that the area of the cell with the highest radioactivity after five minutes is the ribosomes on the rough endoplasmic reticulum. As time progresses, which statement best explains where the level of radioactivity will be highest in the next five minutes?
A) The radioactivity will be highest in the mitochondria, as the proteins made by the cell will need to be modified using ATP.
Eliminate
B) The radioactivity will be highest in the nucleus as the proteins made at the ribosome will be shipped to the nucleus to replicate the DNA.
C) The radioactivity will be the highest outside of the cell because the endoplasmic reticulum transports proteins directly to and through the cell membrane.
D) The radioactivity will be highest in the Golgi apparatus, as proteins made on the rough endoplasmic reticulum are transported to the packaging center prior to leaving the cell.
Answer:
It’s D ,I got it right on USAtestprep
Explanation:
The correct option for this answer is D, which signifies that the radioactivity will be highest in the Golgi apparatus, as proteins made on the rough endoplasmic reticulum are transported to the packaging center prior to leaving the cell.
What do you mean by Radioactivity?Radioactivity may be defined as a spontaneous process that involves the emission of radiation in the form of particles or high-energy photons resulting from a nuclear reaction.
The path of protein transport determines the level of radioactivity in this experiment.
First, the radioactivity is found highest in the ribosomes of ER, then the proteins are transported to the region of the Golgi apparatus by an anograde pathway and reflect in radioactivity.
Therefore, it is well described above.
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for each molecule of glucose consumed how many times does the krebs cycle occur
Answer:
Glycolysis, Pyruvate Oxidation and the Krebs Cycle
For each glucose molecule respired, the cycle reactions occur twice as two pyruvic acid molecules are formed
Explanation:
Answer:
twice im pretty sure
Explanation:
How can the reliability of the investigation be improved?
Answer:
You can test reliability through repetition. The more similar repeated measurements are, the more reliable the results. The reliability of single measurements is not improved through repetition, but through the design of the experiment. Implementing a method that reduces random errors will improve reliability.
Who was the 40th president of the United States?
Answer:
Ronald Reagan
He was president from 1981 to 1989 and became a highly influential voice of modern conservatism.
which statement about human blood vessels is correct?
. I have 13 ones and 9 tens, what is my number? *
Answer:
103
13 ones = 13
9 tens = 90
90 + 13 = 103
Hope this helps
HELP ME PLEASE VERY URGENT !!!!!!! PLEASE TAKE A QUICK LOOK AT THE PICTURE YOULL GET POINTS !!
Explanation:
because the R called in sperm nuclei
hope it helps
PLEASE HURRY NO LINKS 50 POINTS
transfer of electrons create a positive ion and a negative ion the opposite charges attract one another causing a ___ to form
a.) atomic bonds
b.) chemical bonds
c.)molecular bonds
if a bacterial cell is capable of taking up foreign dna, it is said to be what?
Answer:
competent
Explanation:
The uptake of foreign DNA from the environment is known as transformation
If a bacterial cell is capable of taking up foreign DNA, it is said to be competent.
What is competent?
Transformation is the process by which bacteria can absorb foreign DNA. In DNA cloning, transformation is a crucial step. After restriction digest and ligation, it takes place and transmits freshly created plasmids to bacteria.
Bacteria are chosen on antibiotic plates after transformation. Bacteria are extraordinarily adaptable creatures, with the rare capacity to take in and replicate (or copy) foreign DNA.
They gain an evolutionary advantage from this and are better able to withstand environmental changes. Bacteria, for instance, can acquire DNA that renders them immune to antibiotics.
Therefore, the term is competent for a bacterium that is capable of taking up foreign DNA.
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Cómo se puede introducir el ADN de una célula en otra célula diferente?
Answer:
En conjugación, el ADN se transfiere de una bacteria a otra. Después de que la célula donante se acerca al receptor mediante una estructura llamada pilus, el ADN se transfiere entre las células. En la mayoría de los casos, este ADN está en forma de plásmido. Explanation:
There are a group of 13 related species of birds on a group of about 20 isolated oceanic islands. These species are grouped into four oubgroups with subgroup 1 evolving to species), subgroup 2 evolving second (1 species), subgroup 3 evolving third (5 species), and subgroup 4 evolving last (6 species. I subgroup 4 evolved most recently, then which the following statements is the most logical prediction?
a) The genomes of subgroup 4 should be more similar to each other than to the genomes of subgroup 3.
b) The chances of hybridization between two subgroup 4 species should be less than the chances of hybridization between two subgroup 3 species
c) The species of subgroup 4 should share tower anatomical homologies with each other than they share with the species of subgroup 4.
d) Subgroup 4 should be limited to the six islands that most recently emerged from the sea.
Answer:
C
Explanation:
The extensor carpi radialis longus inserts on which of the following bones?
Answer:
c. 2nd metacarpal
Explanation: is correct edg
which greenhouse gas is created by humans exclusively?
Answer:
Carbon Dioxide
Explanation:
Answer: CFC
Explanation: I took the test.
I'll give you a brain list if you help me.
Answer: The second one
Explanation: Hope this helps :)
Please I only have an hour to submit this please please am begging, please PLEASEEEE
1. Draw a picture that describes each of the two types of speciation.
2. answer the photo below
Answer:
https://www.nationalgeographic.org/encyclopedia/speciation/ this link has a good drawing for each kind of speciation. If we label the steps of the coevolution A through G, top to bottom, right to left (two separate columns), they go "5, 3, 2, 1" in the left column and 6, 4, 7" in the right one
Explanation:
(answering formally because the other thing was jsut a comment lol)
The formation of proteins is dependent on?
How many chromosomes an individual has
The sequence of DNA in genes
Whether or not a mutation has occurred
How many genes are in a chromosome
Answer:
How many chromosomes an individual has
the two copies of a duplicated chromosome are called
Answer:
Because each chromosome was duplicated during S phase, it now consists of two identical copies called sister chromatids that are attached at a common center point called the centromere.
Explanation:
What type of energy does cellular respiration provide all organisms?
Answer:
Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from oxygen molecules or nutrients into adenosine triphosphate (ATP), and then release waste products.
Explanation:
A force is a push or a pull and can change the shape or motion of an object. Forces have strength and direction and are expressed in newtons. Balanced forces produce no change in motion. Unbalanced forces produce a change in motion.
What do you need to know in order to analyze the forces at work in a situation?
DNA profiling is also called DNA fingerprinting. A common misconception about DNA fingerprinting is that the analysis has to do with actual fingerprints. Explain one similarity and one difference between a human being’s pattern of bands on an electrophoresis gel and a human fingerprint.
Answer:
Explanation: Electrophoresis displays the entire DNA sequence, whereas fingerprinting allows you to quickly identify someone. But they have one thing in common: they are both so distinctive that it is nearly impossible for two persons to have the same fingerprint/DNA sequence.
What’s the answer to this
Answer:
A, C, E
Explanation:
Invasive species typically have a fast population rate and take up most of the food resources available therefore out hunting the native species and driving them to extinction.
Removal of waste products in the body is called _____.
It's called excretion.
What is the major function of meiosis?
to produce haploid (1N) gametes
to produce diploid (2N) gametes
to produce haploid (1N) zygotes
to produce diploid (2N) zygotes
Answer:
To produce diploid (2N) zygote
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Answer:
What is this ???
Explanation:
What can plant reproduction tell us about the evolution of plants?
Explanation:
Reproduction is important in plants to produce their progeny and to maintain its population. Plant reproduction helps to maintain its birth rate and sustain the ecosystem. Reproduction helps to acquire new variations and adapt to the environment with the most desirable characters.
a) An F1 x F1 self-fertilization gives a 9:7 phenotypic ratio in the F2. What phenotypic ratio would you expect if you test-crossed the F1?
b) An F1 x F1 self-fertilization gives a 9:3:4 phenotypic ratio in the F2. What phenotypic ratio would you expect if you test-crossed the F1?
c) An F1 x F1 self-fertilization gives a 15:1 phenotypic ratio in the F2. What phenotypic ratio would you expect if you test-crossed the F1?
According to the gene interaction that is operating in the trait determination, the phenotypic ratios of the progeny produced when test-crossing a dihybrid are: a) 4:12, b) 8:8, and c) 12:4
-------------------------
To answer these questions, the first thing you should notice by looking at the phenotypic ratios provided, is that there are two genes involved in the trait, and there is interaction between them.
Let us assume diallelic genes. A and B are the dominant alleles, while a and b are the recessive alleles.
In the three cases (a, b, and c), F1 individuals are dihybrid. Their genotype is AaBb.
Observing the altered phenotype proportions of the offspring can reveal which interaction is operating in the trait determination.
We can use the phenotypic ratio to determine the interaction, so:
9:3:3:1 ⇒ No interaction9:7 ⇒ Double Recessive epistasis 9:3:4 ⇒ Recessive epistasis15:1 ⇒ Dominant duplicate genes.When talking about epistasis, we are referring to an interruption.
The epistatic gene can alter, influence, or suppress the expression of a hypostatic gene.
When there is only one epistatic gene in h0m0zyg0us recessive state, the interaction is known as recessive epistasis. This gene supresses the expression of the other gene. Phenotypic ratio 9:3:4.In double recessive epistasis, both genes are epistatic when they are in a h0m0zyg0us recessive state. This is, in the h0m0zyg0us recessive state, either of the genes will inhibit the expression of the other gene. And vice-versa. Phenotypic ratio 9:7.In Duplicate gene action, there are two genes involved in the expression of a phenotype, and the presence of at least one dominant allele is enough to produce the dominant phenotype. Phenotypic ratio 15:1.
So now, let us make the test-cross.
Note: You will see that the cross is the same in the three cases, but the phenotypic ratio changes according to the interaction.
Cross) dihybrid individual with h0m0zyg0us recessive one
Parental) AaBb x aabb
Gametes) AB, Ab, aB, ab ab, ab, ab, ab
Punnett square) AB Ab aB ab
ab AaBb Aabb aaBb aabb
ab AaBb Aabb aaBb aabb
ab AaBb Aabb aaBb aabb
ab AaBb Aabb aaBb aabb
F2) Phenotypic ratio
***Double recessive epistasis ⇒ 4:12
4/16 dihybrids12/16 heter0zyg0us for one gene and h0m0zyg0us recessive for the other gene.Both genes in recessive state inhibit the expression of the trait.
***Recessive epistasis ⇒ 8:8
In h0m0zyg0us recessive state, Gene A inhibits the expression of B.
8/16 AaBb or Aabb → The trait coded by B or b is being expressed8/16 aaBb or aabb → The trait coded by B or b is inhibited by aa.***Duplicate gene action ⇒ 12:4
Only one dominant allele, either A or B, is enough to express the trait.
12/16 AbBb, Aabb, or aaBb 4/16 aabb → No dominant allele, no trait expressed.Phenotypic ratios:
a) 4:12 = 1:3
b) 8:8 = 1:1
c) 12:4 = 3:1
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