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balu736 [363]
3 years ago
7

Which of the following must happen first in order for DNA replication to occur?

Biology
1 answer:
Vilka [71]3 years ago
6 0

Answer: DNA is unwound.

Explanation:

DNA replication is the process where by two identical DNA copies are produced from a double stranded DNA molecule.

Before DNA will replicates, the double helix length of the DNA to be copied must be unwound, the two strands are separated and the hydrogen bond that link the paired bases are broken. Once the are unwound, they are held apart to expose the new bases so that hydrogen bond can link the nucleotides. The enzyme polymerase then join the new nucleotides into a new DNA strand that is complementary to the template.

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How many kilocalories are in 21 grams of fat
svet-max [94.6K]
<span>9 kilocal per gram of fat 21 grams of fat*9 kilocal per gram of fat = 189</span>
6 0
3 years ago
Which type of epithelium is composed of multiple layers, including an apical layer containing tall, slender cells?
Mademuasel [1]

The question is incomplete as it does not have the options which are:

  • Simple squamous
  • Simple columnar
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  • Stratified squamous
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Answer:

Stratified columnar

Explanation:

Epithelial tissue is the tissue formed by the cells which form a layer of cell and lines the lumen of the organ and also covers the organs. The epithelial tissue can be classified based on the number of layer and shape of the cell.

In the given question, the shape of the cell is slender and are tall therefore are called columnar. The cells form more than one layer or multiple layers therefore form stratified layers.

Therefore,  the epithelial tissue formed by these slender shaped multiple layers is known as the stratified columnar layer. The stratified columnar is present in the respiratory tract and the digestive tract.

Thus,  Stratified columnar is the correct answer.

4 0
3 years ago
Jonathan sows some pea seeds in one pot. Within few days the seeds germinate and a radicle forms, which gives rise to roots. How
Sedbober [7]
<span>C.) A pea is a dicot, so the radicle grows and gives rise to a main root and its branches</span>
6 0
3 years ago
What is some advice you would give to someone who doesn’t know the importance of carrying capacity
Aleksandr-060686 [28]

Answer:

For someone who doesn't know the importance of carrying capacity, i would advice him to understand what carrying capacity mean, and then tell him that he should not overcrowd the population of animals or be part of humans overcrowding as it can destroy the ecosystem or resources.

Explanation:

This is because, carrying capacity is the population size that can conviniently live in an habitat with the available resources..

It's very important because, it will ensure that the population size that the resources can sustain can live in the environment so as to prevent degradation of the ecosystem or the environment due to increase in population size.

5 0
2 years ago
"The diagram shows the inside of a eukaryotic cell.
NARA [144]
The process which occurs in the structures that are labeled X is Kreb's cycle.
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5 0
3 years ago
Read 2 more answers
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