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 Biology Questions

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Q:

Excess of fat in the body is stored in

A) Adipose tissue B) Acrosome
C) Erythrocytes D) Bone marrow
 
Answer & Explanation Answer: A) Adipose tissue

Explanation:
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10 3450
Q:

For the oxidation, carbohydrates should be in the form of

A) Starch B) Cellulose
C) Glucose D) Fats
 
Answer & Explanation Answer: C) Glucose

Explanation:
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Q:

Goitre is due to the deficiency of

A) Calcium B) Zinc
C) Selenium D) Iodine
 
Answer & Explanation Answer: D) Iodine

Explanation:
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6 3433
Q:

Which of the following statements about aldosterone is NOT correct?

A) Aldosterone increases sodium reabsorption by increasing the number of Na+-K+ ATPase pumps in the luminal membrane of the proximal tubule. B) Aldosterone is stimulated by decreased plasma sodium levels and increased plasma potassium levels.
C) Aldosterone is produced in the adrenal cortex. D) Aldosterone increases the number of passive sodium channels in the luminal membrane of the distal tubule and collecting duct, thus aiding sodium reabsorption.
 
Answer & Explanation Answer: A) Aldosterone increases sodium reabsorption by increasing the number of Na+-K+ ATPase pumps in the luminal membrane of the proximal tubule.

Explanation:

Aldosterone, the main mineralocorticoid hormone, is a steroid hormone produced by the zona glomerulosa of the adrenal cortex in the adrenal gland. It is essential for sodium conservation in the kidney, salivary glands, sweat glands and colon.

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1 3411
Q:

The outer membrane that covers the lungs

A) Dura mater B) pleura
C) Pia mater D) Myelin sheath
 
Answer & Explanation Answer: B) pleura

Explanation:

The pleura is the membrane that covers the lungs, according to InnerBody. The pleura consists of two layers, with the parietal pleura forming the membrane's outer layer and the visceral pleura forming the membrane's inner layer.

 

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5 3410
Q:

How many Nephrons are in each kidney?

A) 10,000 B) 1,00,000
C) 1,000,000 D) 1000
 
Answer & Explanation Answer: C) 1,000,000

Explanation:

There are about 1,000,000 nephrons in each human kidney.

Nephron, functional unit of the kidney, the structure that actually produces urine in the process of removing waste and excess substances from the blood.

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2 3402
Q:

The First step of Bacterial Replication is

A) Pinching of the plasma membrane B) Separation of daughter cells
C) Attachment of the DNA to the plasma membrane D) DNA Replication
 
Answer & Explanation Answer: D) DNA Replication

Explanation:

The First step of Bacterial Replication is DNA Replication.

DNA must be copied in order to proceed.

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3 3388
Q:

The NADPH required for the calvin cycle comes from

A) Reactions initiated in photosystem 1 B) Citric acid cycle
C) Reactions initiated in photosystem 2 D) Glycolysis
 
Answer & Explanation Answer: C) Reactions initiated in photosystem 2

Explanation:

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.

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