Tag: division for growth and reproduction

Quizzes (13) Questions (189)

Questions Related to division for growth and reproduction

Multiple choice mitosis structure of chromosome, cell cycle and cell division cell division biology cell division in embryo development division for growth and reproduction

Generally, decline in hearing power begins after the age of 

  1. 50 years

  2. 30 years

  3. 40 years

  4. 10 years
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ageing is the process where there is a continuous decline in the metabolism of the body. The hearing power also declines after the age of 40 years. Presbycusis is the term which is generally used for hearing impairment due to old age. It is mainly caused due to degeneration of the cochlea or associated structures of the inner ear or auditory nerves.

So, the correct answer is option C.

Multiple choice mitosis structure of chromosome, cell cycle and cell division cell division biology cell division in embryo development division for growth and reproduction

Cell which keeps changing it's shape is called

  1. Spirilla

  2. Pleomorphic

  3. Symbiont

  4. Gram negative
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pleomorphic organisms, such as certain bacteria like Mycoplasma, lack a rigid cell wall and can readily alter their size and shape in response to environmental conditions. Spirilla are rigid spiral-shaped bacteria, while symbionts and gram negative refer to ecological relationships or cell wall staining properties.

Multiple choice mitosis structure of chromosome, cell cycle and cell division cell division biology cell division in embryo development division for growth and reproduction

Power is regeneration is poor in.

  1. Brain cell

  2. Bone cell

  3. Chondroblasts

  4. Striated muscles
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Brain cells (neurons) have very limited capacity for regeneration compared to other tissues like bone or muscle. This is why injuries to the central nervous system are often permanent.

Multiple choice mitosis structure of chromosome, cell cycle and cell division cell division biology cell division in embryo development division for growth and reproduction

Storage sprouting of potato can be prevented by 

  1. IAA

  2. Maleic hydrazide

  3. Cytokinins

  4. Gibberellins
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Maleic hydrazide : It is a growth retardant which checks cell division. So during seed storage this is applied for checking sprouting of potato tubers so that the importance of potato may not be lowered down.

Multiple choice mitosis structure of chromosome, cell cycle and cell division cell division biology cell division in embryo development division for growth and reproduction

The process of cell death involving DNA cleavage in cells is known as

  1. Necrosis

  2. Apoptosis

  3. Cytokinesis

  4. Endocytosis
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Apoptosis is the process in living cells which results in the death of cells that are damaged, attacked by pathogens, cancerous cell, abnormal cell, etc. Such cells are identified by the cells of the immune system followed by the production of proteins that kills the cell by DNA cleavage. It is also called programmed cell death. Thus the correct answer is option A. 
Multiple choice mitosis structure of chromosome, cell cycle and cell division cell division biology cell division in embryo development division for growth and reproduction

Glucose and amino acids are absorbed through the following part of villus.

  1. Epithelial cells

  2. Blood capillary

  3. Lymphatic vessel

  4. All
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Glucose and amino acids are absorbed through the epithelial cells (enterocytes) of the villi in the small intestine. From there, they pass into the blood capillaries.

Multiple choice mitosis structure of chromosome, cell cycle and cell division cell division biology cell division in embryo development division for growth and reproduction

Number of cells daily replaced in human body is

  1. $1 \times 10^9$
  2. $5 \times 10^9$
  3. $1 \times 10^{10}$
  4. $5 \times 10^{10}$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The human body replaces approximately 1 billion (1 x 10^9) cells daily, primarily through processes like cell turnover in the skin and gut lining.

Multiple choice mitosis structure of chromosome, cell cycle and cell division cell division biology cell division in embryo development division for growth and reproduction

Heparin is formed by.

  1. Liver cells

  2. Plasma cells

  3. Blood cells

  4. Spleen cells
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Heparin is a naturally occuring anticoagulant which is synthesised in Liver as well as blood cells such as basophils and mast cells. Heparin prevents the formation of blood clots and extension of existing blood clots within the blood.
So, the correct answer is 'Both A and C'.
Multiple choice mitosis structure of chromosome, cell cycle and cell division cell division biology cell division in embryo development division for growth and reproduction

Fat absorbed from gut is transported in blood as

  1. Micelles

  2. Liposomes

  3. Chemomicrons

  4. Chylomicrons

  5. Phagocytes
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
The products of lipid digestion enter the body by a different process and a different route. These products namely, long chain fatty acids, monoglycerides and diglycerides are insoluble in water and cannot be directly absorbed from intestinal contents. They combine with the bile salts and phospholipids to form small spherical water-soluble molecular aggregates called micelles. From the micelles, fatty acids, glycerides and fat-soluble vitamins are actively absorbed into the intestinal cells. In these cells, the bile salts are freed and fatty acids, glycerol, monoglycerides and diglycerides are resynthesized into fats. The fats are then mixed with cholesterol and coated with special proteins forming small globules called chylomicrons The latter are transported by exocytosis out of the epithelial cells into a lacteal.
Thus, the correct answer is option D. 
Multiple choice mitosis structure of chromosome, cell cycle and cell division cell division biology cell division in embryo development division for growth and reproduction

Basement membrane is formed of.

  1. Epidermal cells

  2. Endodermal cells

  3. Both A and B

  4. None of the above but present below epithelial cells
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All epithelia are separated from their underlying tissues by an extracellular basement membrane which is fibrous in nature. The basement membrane is the fusion of two lamina namely, the basal lamina and the reticular lamina. The lamina reticularis is attached to the basal lamina with collagen anchoring fibrils and fibrillin microfibrils. The two layers together are collectively referred to as the basement membrane.

So D is the correct option.