Practice MCQ Questions and answers on Biology-GK

1

In 1610, who made microscope and used it to observe very small animals?

A) Robert Hooke B) Galileo C) Aristotle D) Laveran

Discuss

Answer & Solution

Answer: Option B

Solution:

Galileo made microscope and used it to observe very small animals.

2

What three statements make up the cell theory?

A) All living things are made up of cells B) New cells come frome exisiting cells C) Cells are the basic unit of structure/function in living things D) All of the above

Discuss

Answer & Solution

Answer: Option D

Solution:

The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells.

3

The outermost layer in a plant cell is

A) Cell wall B) Cell membrane C) Plasma membrane D) Nuclear membrane

Discuss

Answer & Solution

Answer: Option A

Solution:

The outermost layer in a plant cell is cell wall.

4

The longest cells of human body is

A) White blood corpuuscles B) Red blood cells C) Neuron cell D) None of these

Discuss

Answer & Solution

Answer: Option C

Solution:

Neurons or nerve cells can be up to 3 feet long. A typical neuron has a cell morphology called soma, hair-like structures called dendrites and an axon. Neurons are specialized in conveying knowledge throughout the body. The sensory neurons, motor neurons, and interneurons are three types of neurons.

5

They contain those enzymes which can digest the phagocytosed food particles.

A) Ribosomes B) Mitochondria C) Lysosomes D) None of the above

Discuss

Answer & Solution

Answer: Option C

Solution:

Lysosomes are membrane-enclosed organelles that contain an array of enzymes capable of breaking down all types of biological polymers proteins, nucleic acids, carbohydrates, and lipids.

6

The scientific study of livings is called

A) Zoology B) Anotomy C) Ecology D) Biology

Discuss

Answer & Solution

Answer: Option D

Solution:

The organised study of a topic or knowledge is known as science. The different fields of study are classified as the branches of science. The study of the living organisms is known as biology. This includes the details and all the study facts with respect to the living things like plants, animals and microbes.

7

They are present in the underground parts of the plants and stored food.

A) Leucoplasts B) Chromoplasts C) Chloroplasts D) Lysosomes

Discuss

Answer & Solution

Answer: Option A

Solution:

Leucoplasts are present in the underground parts of the plants and stored food.

8

Which of the following groups is present in animal cells ?

A) Mitochondria, Cell membrane, Cell wall, Cytoplasm B) Chloroplasts, Cytoplasm, Vacuole, Nucleus C) Nucleus, Cell membrane, Mitochondria, Cytoplasm D) Vacuole, Cell membrane, Nucleus, Mitochondria

Discuss

Answer & Solution

Answer: Option C

Solution:

Nucleus, Cell membrane, Mitochondria and Cytoplasm is present in animal cells.

9

What is the full form of DNA?

A) Diribo nucleic acid B) Di nucleic acid C) Dual nitrogen acid D) Deoxyribonucleic acid

Discuss

Answer & Solution

Answer: Option D

Solution:

The full form of DNA is Deoxyribonucleic Acid.

10

What is the full form of RNA?

A) Ribonucleic Acid B) Ribonitric Acid C) Ribonutrient Acid D) Reverse Nucleic Acid

Discuss

Answer & Solution

Answer: Option A

Solution:

Ribonucleic acid is the full form of RNA.