Biology-Physics-Chemistry (GK) Solved MCQs


Which gland is not associated with human alimentary canal?

A. salivary glands
B. adrenal gland
C. liver
D. pancreas
Answer» B. adrenal gland

In humans, bile juice is secreted by

A. pancreas
B. small intestine
C. esophagus
D. liver
Answer» D. liver

An enzyme which can only act in acidic medium is

A. pepsin
B. trypsin
C. rennin
D. amylase
Answer» A. pepsin

The part of digestive system where no digestion occurs

A. duodenum
B. esophagus
C. stomach
D. mouth
Answer» B. esophagus

Which of the following animals has no need for a gall bladder?

A. horse
B. lion
C. dog
D. human
Answer» A. horse

About how much saliva does a person produce each day?

A. 100 ml
B. 250 ml
C. 500 ml
D. 1500 ml
Answer» D. 1500 ml

Saliva has the enzyme

A. pepsin
B. ptyalin
C. trypsin
D. rennin
Answer» B. ptyalin

Curdling of milk in the stomach is due to the action of

A. pepsin
B. rennin
D. rennin
Answer» B. rennin

Pepsinogen is secreted by

A. gastric glands
B. intestinal glands
C. chief cells
D. parietal cells
Answer» C. chief cells

Pancreas has

A. only endocrine cells
B. only one type of cell, the same functioning both in an exocrine and endocrine fashion
C. two types of cells-exocrine and endocrine
D. only exocrine cells
Answer» C. two types of cells-exocrine and endocrine

Largest gland in human body is

A. liver
B. pancreas
C. pituitary
D. thyroid
Answer» A. liver

Grana refers to

A. glycolysis of glucose
B. by-product of photosynthesis
C. stacks of thylakoids
D. stacks of quantasomes
Answer» C. stacks of thylakoids

A specific function of light energy in the process of photosynthesis is to

A. activate chlorophyll
B. split water
C. synthesis glucose
D. reduce CO2
Answer» A. activate chlorophyll

ATP formation during photosynthesis is known as

A. phosphorylation
B. photophosphorylation
C. oxidative phosphorylation
D. substrate level phosphorylation
Answer» B. photophosphorylation

Dark reaction in photosynthesis is called so because

A. it does not require light energy
B. cannot occur during daytime
C. occurs more rapidly at night
D. it can also occur in darkness
Answer» A. it does not require light energy

Which of the following is connected with transport of water in plants?

A. phloem
B. xylem
C. epidermis
D. cambium
Answer» B. xylem

The ultimate cause for movement of water against gravity in a tree is

A. osmosis
B. imbibitions
C. transpiration
D. photosynthesis
Answer» C. transpiration

Which of the following is not an example of a selectively permeable membrane?

A. plasma lemma
B. cell Wall
C. mitochondrial membrane
D. chloroplast membrane
Answer» B. cell Wall

Which of the following is responsible for guttation?

A. root pressure
B. transpiration
C. photosynthesis
D. osmosis
Answer» A. root pressure

Phenyl mercuric acetate

A. reduces transpiration rate
B. reduces photosynthesis
C. kills the plant
D. reduce respiration
Answer» A. reduces transpiration rate

Which of the following has no blood but respires?

A. earthworm
B. hydra
C. cockroach
D. fish
Answer» A. earthworm

Which type of respiratory organs are present in spiders and scorpions?

A. book lungs
B. gill books
C. gills
D. lungs
Answer» A. book lungs

At high altitude, RBCs of human blood will

A. increase in number
B. decrease in number
C. decrease in size
D. increase in size
Answer» A. increase in number

Vocal cords occur in

A. pharynx
B. glottis
C. bronchial tube
D. larynx
Answer» D. larynx

Which one of the following structures closes the respiratory passage during ingestion of food?

A. larynx
B. epiglottis
C. hard palate
D. soft palate
Answer» B. epiglottis
Question and answers in Biology-Physics-Chemistry (GK), Biology-Physics-Chemistry (GK) multiple choice questions and answers, Biology-Physics-Chemistry (GK) Important MCQs, Solved MCQs for Biology-Physics-Chemistry (GK), Biology-Physics-Chemistry (GK) MCQs with answers PDF download

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