General Science Jkssb Biology Set 1 Mcqs (605 MCQs) | JKSSB & SSC Quiz

General Science

jkssb biology set 1 mcqs

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Practice Questions

605 Total
Question 161 Discuss
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In humans sound is produced by voice box. What is the other name used for voice box?

A
Larynx
B
Lymph Nodes
C
Pharynx
D
Wind pipe

Answer & Explanation

Correct Option: A

Anatomically, the cartilaginous larynx, physically situated just above the top of the human windpipe, safely houses the delicate vocal cords that actively vibrate to forcefully generate sound, and is thus functionally referred to as the voice box.
Question 162 Discuss
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AIDS is an abbreviation for:

A
Acquire Immuno Deficiency Syndicate
B
Acquired Immuno Deficiency Syndrome
C
Acquired Immuno Deficiency Syndicate
D
Acquired Immunic Deficiency Syndrome

Answer & Explanation

Correct Option: B

AIDS stands for Acquired Immuno Deficiency Syndrome, a severe condition caused by the human immunodeficiency virus (HIV). It compromises the body's immune system, making it highly vulnerable to opportunistic infections.
Question 163 Discuss
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What is called the powerhouse of the cell?

A
Nucleus
B
Cytoplasm
C
Chloroplast
D
Mitochondria

Answer & Explanation

Correct Option: D

Mitochondria are universally known as the powerhouses of the cell because they generate most of the cell's supply of adenosine triphosphate (ATP), which is used as a source of chemical energy.
Question 164 Discuss
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Foods like pizza, burger are rich in:

A
Vitamins
B
carbohydrates
C
proteins
D
Minerals

Answer & Explanation

Correct Option: B

Fast foods like pizzas and burgers typically contain high amounts of refined carbohydrates from their dough and buns, along with unhealthy saturated fats.
Question 165 Discuss
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Deficiency of iodine primarily affects which gland?

A
Pineal
B
Thyroid
C
Gastric glands
D
Pituitary

Answer & Explanation

Correct Option: B

A deficiency of iodine in the diet leads to the enlargement of the thyroid gland, a medical condition known as goiter. Iodine is an essential trace element necessary for the production of thyroid hormones.
Question 166 Discuss
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Which of the following items has a high fibre content?

A
Meat
B
Eggs
C
Whole grains
D
Milk

Answer & Explanation

Correct Option: C

Whole grains are an excellent natural source of dietary fiber, which aids in digestion and helps prevent constipation. Animal products like meat, milk, and eggs do not contain naturally occurring dietary fiber.
Question 167 Discuss
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What are ribosomes made up of?

A
Proteins and RNA
B
Only proteins
C
Only DNA
D
Only RNA

Answer & Explanation

Correct Option: A

Ribosomes are complex cellular structures primarily composed of ribosomal RNA (rRNA) and associated proteins. They serve as the primary site for biological protein synthesis (translation) in all living cells.
Question 168 Discuss
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Which of the following is a cellular organelle involved in lipid synthesis and detoxification?

A
Nucleus
B
Golgi apparatus
C
Smooth endoplasmic reticulum
D
Mitochondrion

Answer & Explanation

Correct Option: C

The smooth endoplasmic reticulum is a membrane-bound network of tubules involved in the synthesis of cellular lipids, steroid hormones, and the detoxification of harmful metabolic byproducts.
Question 169 Discuss
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Compounds like gingerol, paradol, shogaols and zingerone are produced by a plant belonging to which group?

A
bryophyta
B
gymnosperms
C
angiosperms
D
pteridophyta

Answer & Explanation

Correct Option: C

These compounds are the active chemical constituents of ginger, which is a flowering plant belonging to the angiosperms. Angiosperms are vascular plants that produce flowers and bear their seeds within a fruit.
Question 170 Discuss
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In the context of movement of cells, exocytosis is the process by which:

A
cell death is brought about through a heavily regulated sequence of events
B
cells move waste materials from within the cell into the extracellular fluid
C
cells absorb external material by engulfing it with the cell membrane
D
a cell takes in the fluids along with dissolved small molecules

Answer & Explanation

Correct Option: B

Exocytosis is a form of active transport where cells direct the contents of secretory vesicles out of the cell membrane. It is primarily used to expel waste or secrete molecules like hormones and neurotransmitters.
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