__________ is tough and thick white sheath that protect the inner parts of the eye.

(a)

sclera

(b)

conjunctiva

(c)

cornea

(d)

iris

In the absence of oxygen, glucose is broken down in to ________.

(a)

Lactic acid

(b)

Citric acid

(c)

Acetic acid

(d)

Nitric acid

The process of air passing in and out the lungs is called ___________.

(a)

Inhalation

(b)

Exhalation

(c)

Breathing

(d)

None of these

Osmosis is the movement of water molecules from a ______.

(a)

Higher concentration to a region of lower concentration.

(b)

Lower concentration to a region of higher concentration.

(c)

Both of these

(d)

None of these

The erythrocyte is placed in _________ solution which has lesser concentration of solutes and greater concentration of water than in the cytoplasm.

(a)

Hypotonic

(b)

Hypertonic

(c)

Neutral

(d)

Acidic

_________make up organs

(a)

Cells

(b)

Tissues

(c)

Organ system

(d)

None of the above

_________are called as building blocks of life

(a)

Cells

(b)

nucleus

(c)

Cell organelles

(d)

tissues

_______tissues for conduction of nerve impalses

(a)

Epithelial

(b)

Muscular

(c)

Nervous

(d)

Supporting

_____is a thin transparent membrane that is spread across the sclera

(a)

Cornea

(b)

Conjunctiva

(c)

Retina

(d)

Ciliary body

_________million alveoli located at the end of branchial tubes

(a)

480

(b)

300

(c)

100

(d)

200