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Nezavi [6.7K]
3 years ago
8

8. a. If a cell has 2n chromosomes and is only in the G1 phase, what type of cell

Biology
1 answer:
butalik [34]3 years ago
5 0

Answer: I JUST CONFUSE

Explanation:

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The information from messenger RNA is used to create polypeptide sequences during the process of _____.​
polet [3.4K]

Answer:

Translation

Explanation:

The translation is the process during which the nucleotide sequence of the mRNA is read in the form of genetic codes. The nucleotide sequence of mRNA is complementary to the template DNA strand. According to the sequence of the nucleotides in the mRNA, the amino acids are added in a specific order to make the polypeptide chains. The process occurs on ribosomes. The ribosomes move along the mRNA to read its sequence and the tRNA brings are amino acids to be added to the polypeptide chains.

8 0
3 years ago
The leaves at the top of a tree’s canopy are exposed to direct sunlight during the day, and their phytochromes will occur in a h
olya-2409 [2.1K]

Answer:

Explanation:

1)Pfr/Pr

2) Pr

3)far-red

Explanation:

The leaves at the top of a tree’s canopy are exposed to direct sunlight during the day, and their phytochromes will occur in a high *Pfr/Pr* ratio. Meanwhile, the leaves of the same tree at the bottom of the canopy are highly shaded during the day and will likely have a higher proportion of the * ( PHYTOCHROME )Pr *;form of phytochrome present due to exposure to a higher proportion of *FAR RED * light.

Plants make use of the phytochrome system to it's adjust growth based on the seasons. Through phytochrome plants is able to respond to the timing and duration of dark and light periods. At dawn, all the phytochrome molecules present in the leaved are converted to the active Pfr form until sunset this is because the sun is unfiltered, and unfiltered sunlight has high percentage of red light, but lower far-red light, with the help of phytochrome system , the plants is able to compare the length of dark periods over several days.

7 0
3 years ago
13. A biochemist isolated and purified molecules needed for replication. When DNA was added, replication occurred but the DNA mo
zalisa [80]

Answer:

DNA ligase

Explanation:

DNA replication is a process whereby a particular DNA makes a copy of or synthesizes itself. It consists of several steps with some important enzymes for successful, error free replication. The various steps are as follows;

  • Unwinding of the double helix structure of the DNA and formation of replication fork. The enzyme involved here is the DNA helicase.
  • Primer, a short piece of RNA becomes synthesized and binds to the 3' end of one of the 2 strands of the DNA, the leading strand. The enzyme involved is the DNA primase.
  • Replication of the <em>leading strand</em> then proceeds with the elongation of the primer through the addition of bases in the 5' to 3' direction leading to the formation of continuous strands.
  • The other strand of the DNA, known as the <em>lagging strand </em>starts its own replication by binding with multiple primers at different regions of the strand. Bases are then added to each primer leading to the formation of several, short discontinuous DNA strands known as Okazaki fragments. The enzyme involved in the elongation process is the DNA polymerase.
  • Next is the termination of the replication process after the formation of the continuous and discontinuous strands. Exonuclease enzyme removes primers from the synthesized strands. Primers are replaced by appropriate DNA bases and the Okazaki fragments are joined to form a unified DNA strand by an enzyme known as the DNA ligase.

The many, few nucleotides long DNA segments observed by the Biochemist are the Okazaki fragments that should have been joined together by the DNA ligase.

Hence, DNA ligase must have been the component left of the mixture.

7 0
3 years ago
WILL MAKE BRAINLIEST
Dmitry [639]

Answer:

it is evolution

hope it helps

6 0
3 years ago
Read 2 more answers
4. The diagram below represents one possible immune response that can occur in the human body.
krek1111 [17]

Answer:

A and C only

Explanation:

I'm sorry I don't know how to explain it but trust me its A and C only.

8 0
3 years ago
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