This page requires a JavaScript-enabled browser
Instructions on how to enable your browser are contained in the help file.
Biology 11, Chapter 1
Cell Structure And Functions - 16
1.
It provides the cell wall extra tensile and compressional strength?
a) Protoplast
b) Hemicelluloses
c) Cellulose
d) Lignin
2.
The secondary cell wall provides mechanical support to the cell and those to the plant as it is present in?
a) Cellulose and Polymer.
b) xylem and sclerenchyma.
c) Polymer and Cellulose.
d) Polymer and polysaccharide.
3.
Middle Lamella is present between adjacent?
a) Secondary Cells
b) Primary cell walls of two cells.
c) Primary Cells
d) Secondary cell walls of two cells.
4.
Middle Lamella is the?
a) Second layer to be formed.
b) Two answers are correct.
c) First layer to be formed.
d) No layer to be formed.
5.
Middle Lamella is formed of sticky, gel-like?
a) Magnesium and calcium salts (cellulose) of proteins.
b) Magnesium and calcium salts (protoplast) of proteins.
c) Magnesium and calcium salts (pectates) of proteins.
d) Magnesium and calcium salts (pectates) of hemicelluloses.
6.
It holds neighbouring cell walls together?
a) The Cellulose.
b) Xylem and sclerenchyma.
c) The Polymer.
d) The middle lamella
7.
Why cell wall is not present in animal cell?
a) Because the Cellulose and Polymer act as the outer boundary of these cells.
b) Because the cell wall acts as the outer boundary of these cells.
c) Because the cell membrane acts as the outer boundary of these cells.
d) Because the middle lamella acts as the outer boundary of these cells.
8.
Every cell is bounded by?
a) Plasma membrane.
b) Cellulose membrane.
c) Xylem membrane.
d) Polymer membrane.
9.
The membrane is also called?
a) ii. Cellulose membrane.
b) v. Answer I & iii are correct.
c) iii Surface membrane.
d) i. Cell membrane.
10.
Chemically cell membrane consists of__________, _________ and small quantity of carbohydrates.?
a) Proteins 20-40%, lipids 60-80%
b) Proteins 70-80%, lipids 30-40%
c) Proteins 60-80%, lipids 20-40%
d) Proteins 30-50%, lipids 50-70%
This is more feedback!
This is the feedback!
