Question 1

When it comes to cholesterol it is better to have

Accepted Answer

HDL stands for high-density lipoproteins. HDL is called the "good" cholesterol because it carries cholesterol from other parts of your body back to your liver. Your liver then removes the cholesterol from your body. Hence, when it comes to cholesterol it is better to have more HDL.

Question 2

Process occurs in cytoplasm

Accepted Answer

Most cellular activities will occur in the cytoplasm of the cell. Many metabolic pathways including glycolysis and process such as cell division occurs in the cytoplasm of the cell.

Question 3

Why is RNA necessary to act as a messenger?

Accepted Answer

RNA acts as a messenger in between the DNA and ribosome as it transforms the genetic information from the DNA and as DNA is big and can't fit into the nuclear pores

Question 4

What base does guanine pair with?

Accepted Answer

In DNA, the chemicals are Adenine, thymine, guanine and cytosine. They always pair as basepairs like Adenine with Thymine and Guanine with Cytosine.

Question 5

Cellulose is a major component of the

Accepted Answer

Pythium

Question 6

Which virus is not associated with cancer?

Accepted Answer

In the above given options, Retrovirus is the only virus which is not associated with cancer. Here the viruses which are associated with different types of cancer. They are: Hepatitis virus which is associated with Liver cancer Papillomavirus which is associated with Cervical cancer Epstein-Barr virus which is associated with Burkitt's lymphoma.

Question 7

Which step happens first in DNA replication?

Accepted Answer

In the first step of DNA replication called initiation, the DNA pair gets unwidened.

Question 8

Higher doses of barbiturates result in

Accepted Answer

Both A & B

Question 9

Which of the following is a feature of leptin?

Accepted Answer

It is secreted by the brain and acts on fat cells

Question 10

One function of sphincter muscles is to

Accepted Answer

control the passage of food through the GI tract

Question 11

Self pollination will lead to

Accepted Answer

Self pollination occurs in the flowers when the pollen grains of the flower falls on the stigma of the same due to wind or insects like moths and bees. This lead to the inbreeding.

Question 12

Improving muscular strength and endurance slows bone density loss.

Accepted Answer

TRUE

Question 13

Salts and sugars work to preserve foods by creating a

Accepted Answer

Salts and sugars work to preserve foods by creating a Hypertonic environment.

Question 14

The principle of dominance states that

Accepted Answer

The principle of dominance states that some alleles are dominant, while others are recessive.

Question 15

ACTH stimulates the adrenal cortex to release corticosteroid hormones.

Accepted Answer

ACTH means Adrenal Corticotrophic Hormone. CRH - Corticotrophin Releasing Hormone produced by hypothalamus stimulates the pituitary gland to release the ACTH which in turn produces corticosteroid hormones by adrenal glands. Hence, the given statement is TRUE.

Question 16

What is the unit of heredity?

Accepted Answer

Genes are units of heredity.

Question 17

Which of these best describes genetic drift?

Accepted Answer

Random fluctuations in the gene frequencies within a population Eliminate is the one which best describes genetic drift.

Question 18

Which formula represents an amino acid?

Accepted Answer

Amino acids are the building blocks of proteins. There are about 21 essential amino acids in the human body like histidine, leucine, lysine... The general formula for amino acid is R-CH(NH2)-COOH.

Question 19

In a nucleosome, the DNA is wrapped around

Accepted Answer

histone octamer

Question 20

Bone strength in later life depends on

Accepted Answer

the formation of dense bones during youth

Biology Questions