BIOLOGY HIGH SCHOOL

If two organisms are in the same phylum, then which of these statements is correct?

Answers

Answer 1
Answer: If they belong to a common phylum, they could still belong to different orders or classes, but not to a different kingdom.

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If I give the lion 2kg of beef, how many kg of protein is he getting from that *beef?
O 12kg
O 1.2kg
120kg

Answers

Answer:

Explanation:

The amount of protein a lion gets from 2kg of beef depends on the protein content of the beef. The protein content of beef can vary, but on average, it is around 20%. To calculate the amount of protein in 2kg of beef, you can multiply the weight of the beef by the protein content:

2kg of beef x 20% protein = 0.4kg of protein

So, the lion would be getting 0.4kg of protein from 2kg of beef.

Remember, the protein content can vary, so it's important to check the specific protein content of the beef you are considering.

The hydrilla, a non-native species of the Hudson River Estuary, has begun to grow along the surface of the water and spread throughout the watershed. Which of the following is true of the hydrilla growing in the Hudson River Estuary?The hydrilla will be a helpful in increasing the number of phytoplankton in the water.
The hydrilla will increase the amount of natural plant growth in the estuary.
The hydrilla is an invasive species, and its presence will have an overall negative effect on the estuary.
The hydrilla needs to be trimmed back every year.

Answers

The right answer for the question that is being asked and shown above is that: "The hydrilla is an invasive species, and its presence will have an overall negative effect on the estuary." This is the statement that is true of the hydrilla growing in the Hudson River Estuary.

1. The greek philosopher Democritus coined what word for a tiny piece of matter that cannot be divided?A. Element
B. Atom
C. Electron
D. Molecule

2. According to John daltons Observations, when elements combine in a compound,
A. the ratio of their Masses is always the same.
B. each element contributes an equal number of atoms
C. their volumes are always equal.
D. their masses are always equal

Answers

For your first question, the correct answer is B. Atom.
And for the second question, the correct answer is A. 

Imagine you are a geneticist interested in studying a newly discovered species of very colorful birds. You have found that a single gene is responsible for their beautiful colors and that yellow birds are homozygous for the yellow allele, blue birds are homozygous for the blue allele and green birds are heterozygous for these alleles. You focused your efforts on studying one specific population and counted 9% yellow, 49% blue and 42% green birds. What are the allele frequencies in this population?\

Answers

The frequency p of the yellow (A) allele is  p= 0.3

The frequency q of the blue (a) allele is  q= 0.7

Hardy–Weinberg equilibrium,  states that allele and genotype frequencies in a population will remain constant from generation to generation. Equilibrium is reached in the absence of selection, mutation, genetic drift and other forces and allele frequencies p and q are constant between generations. In the simplest case of a single locus with two alleles denoted A and a with frequencies f(A) = p and f(a) = q, the expected genotype frequencies under random mating are f(AA) = p² for the AA homozygotes, f(aa) = q² for the aa homozygotes, and f(Aa) = 2pq for the heterozygotes.  

p²+2*p*q+q²= 1       p+q= 1     q= 1-p

yellow (p²)= 9%= 0.09               p= √0.09= 0.3

green (2*p*q)= 42%= 0.42        

blue (q²)=49%= 0.49                q=1-0.3= 0.7 or q= √0.49= 0.7


Jill stepped on a tack. Which part of the central nervous system caused her foot to move off the tack quickly in a reflex response?

Answers

The danger receptor is called nociceptor; this signals the brain to pull the injured part away from danger. Signal travels to the posterior or dorsal horn of spinal cord.

Answer: spinal cord

Explanation:

An animal's body works to maintain its body temperature at a constant level, even when the surrounding temperature changes. What type of feedback does this example show?

Answers

It shows an example of negative feedback

Answer:

negative effect

Explanation:
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