Biology Mcqs for entry test with Answer

BIOLOGY TEST MCQS

Biology is the branch of science dealing with the study of life. It describes the characteristics, classification, and behaviors of organisms, how species come into existence, and the interactions they have with each other and with the environment.  And basic overview of energy and human life.

Which of the following cytoplasmic extensions carry the message toward the cell body_______?

A. Dendrites (Answer)

B. Axon

C. Both of these

D. none of these

Microscopic gaps between the neuron endings are called___________?

A.  Transmitters

B.  Synapses (Answer)

C.  Pores

D.  Nodes

What is the function of synapse_____________?

A. To allow nerve impulse to move in backward direction

B. To decrease the speed of nerve impulse (Answer)

C. To stop the nerve impulse

D. To provide cytoplasmic connection between neurons.

Under resting membrane potentials:

A.  Outer surface of neuron is more positive (Answer)

B.  Inner surface of neuron is more positive

C.  Both of these surfaces are equally positive

D.  none of these.

Which of the following ions are involved in the initiation of nerve impulse____________?

A. Na+ (Answer)

B. K+

C. Fe

D. none of these

Central nervous system of man consists of______________?

A. Brain

B. Spinal cord

C. Both of these (Answer)

D. none of these

Reflex actions below the neck are under control of_____________?

B.  Spinal cord (Answer)

C.  Hypothalamus

D.  none of these.

Which of the following is present inside the vertebral column________?

A. Brain

B. Spinal cord (Answer)

C. Both of these

D. none of these.

Which of the following is largest part of brain?

A.  Cerebrum (Answer)

B.  Cerebellum

C.  Medulla oblongata

D.  Thalamus

Which of the following is second largest part of the brain_________?

A. Cerebrum

B. Cerebellum (Answer)

C. Thalamus

D. Hypothalamus

Intelligence is under the control of___________?

A.  Cerebrum (Answer)

B.  Cerebellum

C.  Thalamus

D.  Hypothalamus

Which of the following acts as thermoregulatory?

A.  Cerebrum

B.  Cerebellum

C.  Thalamus

D.  Hypothalamus (Answer)

Which of the following allows precise muscular movements___________?

A. Cerebrum

B. Cerebellum (Answer)

C. Thalamus

D. Hypothalamus

It is one of the convulsive disorders of nerves which are characterized by abrupt transient symptoms of motor, sensory, psychic or autonomic nature___________?

A. Parkinson’s disease

B. Epilepsy (Answer)

C. Alzheimer’s disease

D. Dementia

Value of resting membrane potential is__________?

A. 0.03 V

B. 0.05 V

C. 0.07 V (Answer)

D. 0.09V

Receptors for hearing come under heading of____________?

A.  Chemical

B.  Mechanical (Answer)

C.  Photo

D.  Nociceptors

Which of the following feature is not related to neuron?

A.  Conduction

B.  Regeneration (Answer)

C.  Reflex

D.  Movement

Which of the following is a chemical link between catabolism and anabolism?

A.  AMP

B.  ADP

C.  ATP (Answer)

D.  All of these

Photosynthesis is process in which ________ compounds of carbon (CO2) and hydrogen 

(H2O) are reduced to carbohydrate like (glucose) using light energy.

A.  Organic

B.  Energy rich

C.  Energy poor (Answer)

D.  Reduced

C6H12O6 + 6O2 + 6CO2 + 6H20 + ENERGY represents:___________?

A.  Photosynthesis

B.  Aerobic respiration (Answer)

C.  Anaerobic respiration

D.  Respiration

Bacteriochlorophylls does not include___________?

A. Chlorophyll e

B. Chlorophyll d

C. Chlorophyll a (Answer)

D. Chlorophyll c

At which times there is no net gaseous exchange between leaves and the atmosphere.

A.  Day time.

B.  Night time.

C.  Dawn & Dusk. (Answer)

D.  Mid night.

Molecular formula of chlorophyll b is___________?

A. C55 H10 O4 N6 Mg

B. C55 H70 O6 N5 Mg (Answer)

C. C55 H71 O6 N4 Mg

D. C55 H70 O6 N4 Mg

Which of the following is a compensation point:

A.  Leaves respire and utilize O2 and release CO2.

B.  Photosynthesis and respiration occur at same rate. So there is not net exchange of gases between atmosphere and plants. (Answer)

C.  Rate of photosynthesis increases, so do the O2 production, with a net release of oxygen coupled with the uptake of CO2.