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vivado [14]
3 years ago
11

What structure in the retina is primarily responsible for night vision as opposed to day vision?

Biology
1 answer:
Kay [80]3 years ago
4 0
Rod: night vision
Cone: day vision
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Which reason best explains why the cell membrane helps the cell maintain homeostasis
Liula [17]

Answer:

Homeostasis involves maintaining a balance of several factors that make a cell healthy.

Explanation:

The cell membrane is a lipid bilayer that prevents that passage of water and ions. This allows cells to maintain a higher concentration of sodium ions out the outside of the cell.

7 0
3 years ago
If you want to selectively label RNA being synthesized by cells(and not DNA) what radioactive compound would you add to the medi
romanna [79]

The right answer is E.

Uracil is a nitrogenous base (pyrimidine) specific for RNA. The nucleoide of uracil is called uridine and nucleotide is called uridine monophosphate or uridylate. In the DNA, there is thymine instead of uracil.

So if we mark the uracils, only the RNA will be marked. The DNA will not be given that there is no uracil in it.

6 0
3 years ago
QUESTION 1 (5 marks) A molecule of messenger RNA (mRNA) has just been synthesized and processed in the nucleus of human cell wit
Dmitry [639]

1) DNA Template strand: TACAATCGACCCATC. 2) Anticodon: AAU. 3) mRNA carries genetic information to build the protein. 4) 5 amino acids. 5) Amino acids: Met, Leu, Ala, Gly, Tyr.

1)

<h3>What is the template strand?</h3>

When the DNI molecule separates into two strands to form the transcription bubble, we can identify two separate segments:

  • The coding strand that goes in 5' to 3' direction
  • The complementary strand -template strand- that grows in 3' to 5' direction .

The template strand is the one that is going to be complemented by the mRNA.

mRNA ⇒ AUGUUAGCUGGGUAG

  DNA ⇒ TACAATCGACCCATC

Remember that pairs are as follows

<u>DNA    RNA</u>

T     →    A

A     →    U

G     →    C

<u>C     →    G   </u>

2)

<h3>What is an anticodon?</h3>

The anticodon is the sequence of three nucleotides that couples with the mRNA codon.

Each tRNA has two important sites. One of them is the anticodon that couples with the codon of the mRNA molecule. The other one carries the amino acid that is going to be addeded to the protein.

                              1st      2nd     3th     4th   5th

mRNA codons ⇒ AUG   UUA   GCU  GGG  UAG

tRNA anticodon ⇒         AAU

3)

<h3>What is translation?</h3>

Translation is the stage of protein synthesis during which mRNA carries genetic information needed to synthesize the new protein in the cytoplasm.

Steps,

1- The formed mRNA moves to the cytoplasm through the nucleus membrane pores.

2- Once in the cytoplasm, mRNA meets a ribosome, the primary structure for protein synthesis.

3- Ribosomes are organelles composed of the association of proteins with rRNA and tRNA. They can be found in the rough endoplasmic reticulum or floating in the cytosol.

4- While the ribosome reads mRNA strain from its 5' extreme to 3', tRNA adds the correct amino acids to build the polypeptide.

The function of mRNA during translation is to take genetic information needed to build the protein.

4)

<h3>How many amino acids are determined per codon?</h3>

Each codon codes for only one amino acid.

There are cases in which different codons code for the same amino acid, but a single codon always codes for one amino acid.

mRNA codons ⇒ AUG   UUA   GCU  GGG  UAG

Amino acids     ⇒ Met    Leu     Ala     Gly    Tyr

                                 1        2         3        4        5

This mRNA segment represents 5 amino acids.

5)

Amino acids     ⇒ Met    Leu     Ala     Gly    Tyr

You can learn more about translation at

brainly.com/question/16305501

brainly.com/question/25017567

#SPJ1

3 0
1 year ago
As a result of the Law of Conservation of Energy, phytoplankton cannot produce more energy than it absorbs from the sun. Which m
sammy [17]
The best and most correct answer among the choices provided by the question is the fourth choice "<span>Measure the amount of energy in the phytoplankton and the amount of light entering the aquarium. Then measure the amount of energy in the phytoplankton after exposure to the light and determine the difference." </span><span>I hope my answer has come to your help. God bless and have a nice day ahead!</span>
7 0
3 years ago
2) Which of the following are examples of
Serhud [2]

Answer:

trees

Explanation: its the only part of an ecosysstem that is living

3 0
3 years ago
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