Question 1

Which is a function of a protein macromolecule?

Accepted Answer

The function of a protein macromolecule is - Moving things in and out of cells. - Transporting other molecules in the body. - Making up the connective tissue in tendons.

Question 2

Stress is a factor that contributes to heart disease risk.

Accepted Answer

True, Stress is a factor that contributes to heart disease risk. More factors that contributes to heart disease risk are blood pressure, cholesterol, smoking, physical inactivity and overeating.

Question 3

Which shows a correctly paired DNA molecule?

Accepted Answer

The nucleotides that are present in DNA molecule are 4. They are Thymine (T), Guanine (G), Adenine (A) and Cytosine (C). Here in this Adenine pairs with Thymine (A - T) and Cytosine pairs with Guanine (C - G).

Question 4

The hormone associated with aggression seems to be

Accepted Answer

Testosterone is the hormone which is associated with aggression.

Question 5

The size of the pupil is controlled by the

Accepted Answer

The size of the pupil is controlled by the Iris when light enters the eye.

Question 6

Membrane bound organelles are not found in the cells of

Accepted Answer

Membrane bound organelles are not found in the cells of Prokaryotes whereas Eukaryotes have nucleus and membrane bound organelles. For example : Bacteria is prokaryotic organism with lack of nucleus and membrane bound organelles whereas fungi is a eukaryotic with nucleus and membrane bound organelles.

Question 7

Nucleic acid hybridization is based on the fact that

Accepted Answer

pairing between complementary bases occurs

Question 8

A genus can best be defined as

Accepted Answer

A genus can best be defined as a taxon composed of one or more species and a classification level lying below family.

Question 9

Which organelle performs cellular respiration?

Accepted Answer

mitochondria

Question 10

A Phospholipid is a

Accepted Answer

A Phospholipid is a lipid molecule which has hydrophilic head and a hydrophobic tailand and is a main component in making of all cell membranes in which they two form a parallel layers called Phospholipid bilayer

Question 11

Lobar Pneumonia refers to a lung infection in which it affects

Accepted Answer

large part of the lobe or lung

Question 12

DNA is copied during a process called

Accepted Answer

transcription

Question 13

Which is a homologous chromosome pair?

Accepted Answer

Tetrad is a homologous chromosome pair in the given options. A homologous chromosome pair is a pair of chromosomes one from father and one from mother that has same gene sequence after the process of meiosis.

Question 14

Which forms the largest portion of the coxal bone?

Accepted Answer

Ilium

Question 15

Which of these phosphorylates ADP to make ATP?

Accepted Answer

E

Question 16

The thyroid hormone that regulates carbohydrate metabolism is

Accepted Answer

Thyroxin or Thyroxine is the thyroid hormone that regulates carbohydrate metabolism in the human body.

Question 17

Gastrulation is the process that directly forms the

Accepted Answer

Gastrulation rearranges the cells of the blastula and ultimately forms the three germ layers of the embryo. The primary layers that will form all of the major body and organ systems of the organism, these germ layers include the ectoderm, mesoderm, and endoderm.

Question 18

All of the following are fat-soluble vitamins except

Accepted Answer

Fat-soluble vitamins except are the vitamins that are not soluble in water and are only absorbed when taken with higher fat food. There are 4 types of fat soluble vitamins. They are : Vitamin A Vitamin D Vitamin E Vitamin K Water soluble vitamins are Vitamin B and Vitamin C.

Question 19

Which of the following is not true of graded potentials?

Accepted Answer

Graded potentials are changes in membrane potential that vary in size, as opposed to being all-or-none. In the given options, They increase amplitude as they move away from the stimulus point is not true about the graded potentials.

Question 20

What is the heaviest internal organ in the human body?

Accepted Answer

Liver

Biology Questions