Biology Questions

Q:

Which plant cell organelle contains its own dna and ribosomes?

A) mitochondria B) Chloroplasts
C) Both A & B D) Vacuole
 
Answer & Explanation Answer: C) Both A & B

Explanation:

The plant cell organelles, "The power house of the cell" mitochondria and the chloroplasts contains their own DNA and ribosomes.

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Q:

A sudden loss of memory is a symptom of

A) Alzheimer's B) Dementia
C) Amnesia D) None of the above
 
Answer & Explanation Answer: C) Amnesia

Explanation:

A sudden loss of memory is a symptom of Amnesia which is caused by an injury or damage to our brain. In that situation we cannot remember about ourself and our life.

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Q:

Sycon (Scypha), Spongilla (Fresh water sponge) and Euspongia (Bath sponge) are examples of which Phylum?

A) Coelenterata B) Platyhelminthes
C) Ctenophora D) Porifera
 
Answer & Explanation Answer: D) Porifera

Explanation:
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Q:

The process of acquiring oxygen from outside the body and to use it in the process of breakdown of food sources for cellular needs is commonly called______.

A) respiration B) nutrition
C) digestion D) transportation
 
Answer & Explanation Answer: A) respiration

Explanation:
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Q:

Color blindness primarily affects

A) Children B) Male
C) Female D) Both B & C
 
Answer & Explanation Answer: B) Male

Explanation:

Color blindness primarily affects males as the the genes responsible for the most common, inherited color blindness are on the X chromosome, hence, primarily affects males.

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Q:

Which of the following is not a characteristic of Pisces?

A) Exoskeleton of scales B) Breathing through gills
C) Endoskeleton of bone/cartilage D) Presence of pseudocoelom
 
Answer & Explanation Answer: D) Presence of pseudocoelom

Explanation:
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Q:

Which one of the following hormones is essential for the uptake of glucose by cells in the human body?

A) GH B) TSH
C) Insulin D) Cortisol
 
Answer & Explanation Answer: C) Insulin

Explanation:

Insulin is an anabolic hormone that stimulates glucose and fatty acid uptake into adipose cells, promoting triglyceride synthesis.Glucagon is a peptide hormone, produced by alpha cells of the pancreas. It works to raise the concentration of glucose and fatty acids in the bloodstream, and is considered to be the main catabolic hormone of the body.

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Q:

Nereis, Pheretima (Earthworm) and Hirudinaria (blood sucking leech) are examples of which Phylum?

A) Coelenterata B) Aschelminthes
C) Annelida D) Arthropoda
 
Answer & Explanation Answer: C) Annelida

Explanation:
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