21.
Plasma membrane is composed of
A
cellulose and lipids
B
lipids and proteins
C
peptidoglycan and lipids
D
cellulose and proteins
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Plasma membrane is composed of
cellulose and lipids
lipids and proteins
peptidoglycan and lipids
cellulose and proteins
Largest number of cell bodies of neuron in our body are found in:
retina
spinal cord
brain
tongue
In chloroplasts, light is captured by
thylakoids within grana
grana within cisternae
cisternae within grana
grana within thylakoids
If the ribosome of a cell are destroyed then
respiration will not take place
fats will not be stored
carbon assimilation will not occur
proteins will not be formed
Identify the organelle that exists only in plant cell but NOT in an animal cell?
Centriole
Chloroplast
Golgi apparatus
Ribosome
Find the correct statement:
Many fungi are single celled
Most cells are very large
Animals have many vacuoles
Chemical composition of Prokaryotes and eukaryotes vary
Find the best definition of vacuole ?
A fluid filled structure surrounded by membrane.
A thread like structure containing nuclear material.
A jelly like substance which is present between nucleus and cell membrance.
The basic structural units of an organism.
ER remains associated with
dictyosomes
mitochondria
nuclear membrane
chloroplast
Chromosomes are composed of
DNA and protein
DNA and sugar
sugar and protein
chromatin
Chemical nature of carrier molecules facilitating transport across plasma membrane is:
starchy
sugary
proteinaceous
fatty acidic
Cell wall of plants is mainly composed of
chitin
cellulose
lipids
lignin
Cell wall is absent in
plant cells
bacterial cells
fungal cells
animal cells
Cell theory was proposed by
Robert Brown
Robert Hook
Schleiden and Schwann
Anton von Leeuwenhoek
Besides nucleus, DNA is also present in
ribosomes and Golgi apparatus
mitochondria and chloroplasts
lysosomes and endoplasmic reticulum
Golgi complex and mitochondria
An organism has poorly defined nuclear membrane in its cells. This organism could be a/an
bacteria
animal
fungi
bird
Amoeba acquires its food by the process of
exocytosis
endocytosis
osmosis
diffusion
A plant cell placed in a hypo-tonic solution will not burst because of presence of
plasma membrane
cell wall
chloroplast
cytoplasm
A cell loses water by osmosis when kept in a solution having a lower concentration of water than the cell. The given solution is
hyper-tonic
hypo-tonic
isotonic
dilute