Cell membrane is made up of:
protein
cellulose
lipids
lipids, carbohydrates and protein
D.
lipids, carbohydrates and protein
Plasma membrane or cell membrane is made up of approximately 60% protein and 40% lipids (by dry weight). However, the protein is found as low as 20% (human myelin) or as high as 70% (rat liver mitochondria). Carbohydrates range from 1 to 10 % in the form of glycoproteins or glycolipids.
Which of the following is related to glycosylation of protein?
Lysosome
Mitochondrium
Peroxisome
Rough endoplasmic reticulum
Assertion : The number of cells in a multicellular organism is inversely proportional to the size of body.
Reason : All the cells in the biological world are of same size.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both the assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both the assertion and reason are false.
A chromosome carrying the centromere at one of the ends is called
acentric
submetacentric
telocentric
metacentric
If centromere is the middle, the chromosome is called :
sub-metacentric
metacentric
acentric
telocentric
The wall of bacteria is consists of :
N-acetyl glucosamine
N-acetyl muramic acid
both (a) and (b)
cellulose
Assertion: Specialization ofcells is advantageous for the organism.
Reason : It increases the operational efficiency of an organism.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both the assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both the assertion and reason are false.
Plant cell is differ from animal cell because of
the presence of cell wall and absence of chlorophyll in plant cell
the presence of cell wall and chlorophyll in plant cell
the absence of cell wall and presence of chloroplast in animal cell
the absence of cell wall and presence of chlorophyll in plant cell
