The structure in the nephron that filters blood under high pressure is the: MCQ with Answer and Explanation

The structure in the nephron that filters blood under high pressure is the:
A. Glomerulus
B. Distal convoluted tubule
C. Loop of Henle
D. Collecting duct
Answer: Option A
Solution (By JKExamLibrary)
The glomerulus is a knot of capillaries enveloped by Bowman's capsule, where blood is filtered under pressure (ultrafiltration). The high hydrostatic pressure forces water, ions, glucose, and urea into the tubular system, while cells and large proteins are retained. The loop of Henle, distal tubule, and collecting duct process the filtrate.

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Practice More Biology Questions

Question #1
Consider statements about plant biology: 1. Photosynthesis occurs in chloroplasts. 2. Respiration occurs in mitochondria. 3. Transpiration occurs through lenticels. Which are correct?
A. 1 and 3 only
B. 1, 2 and 3
C. 1 and 2 only
D. 2 and 3 only

Correct Answer: Option C


Explanation:
Photosynthesis, the process of converting light energy into chemical energy, occurs in the chloroplasts, specifically involving the thylakoid membranes and stroma. Cellular respiration, the process of breaking down glucose to release ATP, occurs primarily in the mitochondria. Transpiration is the loss of water vapor from plants, and while it can occur through lenticels (lenticular transpiration) and the cuticle, the vast majority (about 90%) occurs through the stomata (stomatal transpiration). Thus, statements 1 and 2 are correct.

This question belongs to: Science Biology
Question #2
The stage of human embryonic development in which the embryo implants in the uterine wall is the:
A. Zygote
B. Morula
C. Blastocyst
D. Gastrula

Correct Answer: Option C


Explanation:
The blastocyst, a hollow ball of cells with an inner cell mass, hatches from the zona pellucida and implants into the endometrium around day 6-7 after fertilization. The zygote is the fertilized egg, morula is a solid ball, gastrula forms the three germ layers post-implantation.

This question belongs to: Science Biology
Question #3
Consider the following statements about viruses:
1. The tobacco mosaic virus was the first virus discovered.
2. Viruses can have a protein coat called capsid.
3. Viruses can reproduce outside host cells.
Which of the above is/are correct?
A. 2 and 3 only
B. 1 and 2 only
C. 1 and 3 only
D. 1, 2, and 3

Correct Answer: Option B


Explanation:
TMV was discovered by Ivanovsky. Viruses have a capsid. They require host cells to replicate, so 3 is incorrect.

This question belongs to: Science Biology