BIOLOGY HIGH SCHOOL

The portion of the DNA molecule that can vary is its(A) sugar.
(B) base.
(C) deoxyribose.
(D) ribose.
(E) phosphate

Answers

Answer 1
Answer: Its' base can vary. The sugar (deoxyribose) stays the same. And the phosphate also stays the same. There are four different bases. The arrangement of the bases in threes are called condons. These code for amino acids. These make proteins which make us what we are. The codes are also called genes.

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In studying the origin of the universe, one of the primary unanswered questions is _____.

Answers

How did the universe begin.

Answer:

how did  the Universe get created

Explanation:

How would clearing a forest to plant corn affect an enviroment?

Answers

Clearing a forest to plant corn would have several impacts on the environment. Firstly, it would result in the loss of habitat for a variety of animal and plant species that live in the forest, leading to a reduction in biodiversity.

What is corn plant?

Corn, also known as maize, is a cereal crop that is widely grown throughout the world. It is a member of the grass family and is primarily used as a food crop for both humans and animals

Secondly, it would lead to soil erosion, as the trees and other vegetation that previously held the soil in place would be removed, and the exposed soil would be more susceptible to erosion by wind and rain.

This would result in a loss of soil fertility, which would require increased use of fertilizers to maintain crop yields.

Additionally, the deforestation would increase carbon emissions, contributing to climate change. The removal of trees would also reduce the ability of the forest to absorb and store carbon dioxide from the atmosphere through photosynthesis.

Finally, clearing the forest would also impact the water cycle, potentially leading to changes in rainfall patterns and the drying up of nearby rivers and streams.

Learn more about corn plants at:

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It would affect our environment very badly. The following reasons are why it is bad: 1)Trees are our main supply of oxygen. 2) Corn is slow at converting carbon dioxide into oxygen. 3) Many wildlife creatures (plants and animals) need that ecosystem to live.

What do lysosomes produce that are essential to their function? A. Proteins
B. Ribosomes
C. Transport vesicles
D. Digestive Enzymes

Answers

I think the correct answer from the choices listed above is option D. Lysosomes produce digestive enzymes that are essential to their functions. They decompose the products of ingestion and makes the pH more acidic. They digest food for the cell. Hope this answers the question.

Which structural characteristic is seen in RNA but not in DNA? double strands a single strand chains of nucleotides a helical shape

Answers

The structural characteristic seen in RNA but not in DNA is a single strand. RNA and DNA are macromolecules made up of nucleotides organised in chains. DNA has double strands organised in a helical shape. RNA usually consists of a single strand which is not characteristic for DNA.
The answer is single strand

What is the correct order for the following events in excision repair of DNA? (1) DNA polymerase I adds correct bases by 5¢ to 3¢ replication. (2) Damaged bases are recognized. (3) DNA ligase seals the new strand to existing DNA. (4) Part of a single strand is excised.

Answers

Answer:

2, 4 , 1 and 3

Explanation:

The correct order for events in excision repair of DNA are:-

2, 4 , 1 and 3 that is the

1st step would be:

(2) Damaged bases are recognized.

2nd step of the process

(4) Part of a single strand is excised.

3rd step will be

(1) DNA polymerase I adds correct bases by 5¢ to 3¢ replication.

and the final step in  excision repair of DNA is

(3) DNA ligase seals the new strand to existing DNA

Answer:

2, 4 , 1 and 3

Explanation:

The correct order for events in excision repair of DNA are:-

2, 4 , 1 and 3 thatv is the

1st step would be:

(2) Damaged bases are recognized.

2nd step of the process

(4) Part of a single strand is excised.

3rd step will be

(1) DNA polymerase I adds correct bases by 5¢ to 3¢ replication.

and the final step in  excision repair of DNA is

(3) DNA ligase seals the new strand to existing DNA

Oranges have hundreds of seeds. What does this tell us about their pollination? (2 points

Answers

Hundreds of pollen grains pollinated the ovules  :)
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