Question 1

What are the three main parts of a Eukaryotic cell?

Accepted Answer

Eukaryotic cells are found in plants, animals and unicellular organisms The three main part of Eukaryotic cells are 1 Plasma membrane or membrane-bound organelles which carries out the cell functions 2 Nucleus which contains the cell's DNA (and) 3 Cytoplasm which is a jelly like fluid interior of the cell

Question 2

Which of the following does not influence haemoglobin saturation?

Accepted Answer

Nitric oxide

Question 3

Myeloid stem cells give rise to all leukocytes.

Accepted Answer

Hemopoiesis begins in the red bone marrow, with hemopoietic stem cells that differentiate into myeloid and lymphoid lineages. Myeloid stem cells give rise to all the other formed elements, including the erythrocytes; megakaryocytes that produce platelets; and a myeloblast lineage that gives rise to monocytes and three forms of granular leukocytes: neutrophils, eosinophils, and basophils.

Question 4

When is genetic drift a major factor in evolution?

Accepted Answer

Genetic drift or allelic drift is the change in the relative frequency in which a gene variant (allele) occurs in a population due to random sampling and chance. When is genetic drift a major factor in evolution is * When there is low gene flow. * When there is no selective pressure. * When there is a bottleneck.

Question 5

Hormones are chemicals secreted and regulated by the endocrine system.

Accepted Answer

True. Hormones are chemicals secreted and regulated by the endocrine system.

Question 6

Localized area of pus formation in the lungs is

Accepted Answer

Pulmonary abscess

Question 7

The storage form of glucose in animals is

Accepted Answer

Glycogen is the storage form of glucose in animals and humans which is analogous to the starch in plants. Glycogen is synthesized and stored mainly in the liver and the muscles.

Question 8

The term aerotolerant anaerobe refers to an organism that

Accepted Answer

does not use oxygen but tolerates it.

Question 9

The NADPH required for the calvin cycle comes from

Accepted Answer

ATP and NADPH produced by the light reactions are used in the Calvin cycle to reduce carbon dioxide to sugar. The Calvin cycle is similar to the Krebs cycle in that the starting material is regenerated by the end of the cycle.

Question 10

Which of the following occurred in the presence of tetrodotoxin?

Accepted Answer

The number of action potentials decreased.

Question 11

Which best matches the description with the genetic material?

Accepted Answer

DNA is the genetic material in the cell. Hence, option B) DNA is located in the nucleus best matches the description with the genetic material.

Question 12

What process never occurs in interphase?

Accepted Answer

Absence of cell division is the process that never comes in interphase

Question 13

Which of the following is not a function of saliva?

Accepted Answer

Saliva is produced by the salivary gland which helps in food digestion. Option A) contains fluoride to harden the tooth enamel is not the function of saliva.

Question 14

Floridian starch is characteristic energy storage material of which algae?

Accepted Answer

The floridian starch is reserve food materials in the red algae or the members of class Rhodophytae. It is a characteristic feature of this group.

Question 15

Most bacteria reproduce by

Accepted Answer

Most bacteria is reproduce by binary fission.

Question 16

Which best describes somatic mutations?

Accepted Answer

The best example for somatic mutation would be cancer, familial cancer (which transmits through gametes to the next generation) are not so common while sporadic cancer is seen the most where body cells of a particular area goes through mutations for a number of years and becomes cancerous, but it is not transmitted to next generation.

Question 17

What organelle carries out photosynthesis?

Accepted Answer

Chloroplasts contains chlorophyll, the green substance in plants that allows them to create food from carbon dioxide and water called as photosynthesis.

Question 18

Most of the oxygen transported by the blood is

Accepted Answer

Oxygen is transported throughout the body via hemoglobin in the red blood cells. Hence, most of the oxygen transported by the blood is bounded to hemoglobin.

Question 19

Benign prostatic hyperplasia is characterized by

Accepted Answer

Enlargement of prostate gland

Question 20

Meiosis starts with a single diploid cell and produces 4 haploid cells.

Accepted Answer

A cell undergo meiosis, and it produces 4 haploid cells from a single diploid cell. Hence, the given statement is true.

Biology Questions