The vacuole is lined by a membrane called
Options
(a) cell membrane (b) tonoplasm (c) tonoplast (d) jacket
Correct Answer:
tonoplast
Explanation:
No explanation available. Be the first to write the explanation for […]
The vacuole in the plant cell contains
Options
(a) tonoplast (b) cell sap (c) stroma (d) matrix
Correct Answer:
cell sap
Explanation:
No explanation available. Be the first to write the explanation for […]
The type of transport taking place across biomembranes without the help of proteins is
Options
(a) facilitated diffusion (b) active transport (c) simple diffusion (d) diffusion via symport
Correct Answer:
simple diffusion
Explanation: […]
The type of muscle fibre present in the wall of alimentary canal is
Options
(a) smooth muscle fibre (b) striped muscle fibre (c) cardiac muscle fibre (d) smooth muscle fibre & striped muscle […]
The two types of cellular organelles that transform energy are
Options
(a) mitochondria and chloroplasts (b) chromoplast and leucoplast (c) mitochondria and chromoplast (d) chloroplast and leucoplast
Correct Answer:
mitochondria and chloroplasts
Explanation: […]
The two functional groups characteristic of sugars are
Options
(a) Carbonyl and hydroxyl (b) Carbonyl and phosphate (c) Carbonyl and methyl (d) Hydroxyl and methyl
Correct Answer:
Carbonyl and hydroxyl
Explanation:
Sugar is […]
The transport of ions up the stem to all parts is through
Options
(a) transpiration stream (b) mass flow (c) diffusion (d) active transport
Correct Answer:
transpiration stream
Explanation:
After the ions have […]
The transparent lens in the human eye is held in its place by
Options
(a) smooth muscles attached to the ciliary body (b) smooth muscles attached to the iris (c) ligaments attached to […]
The toxic effect of carbon monoxide is due to its greater affinity for haemoglobin as compared to oxygen approximately by
Options
(a) 2 times (b) 20 times (c) 250 times (d) 1000 times
The thickness of cell membranes varies between 6 and 9
Options
(a) millimeters (b) micrometers (c) nanometers (d) picometers
Correct Answer:
nanometers
Explanation:
No explanation available. Be the first to write the explanation for […]
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