Biology : Cell : The Unit of Life

Active transport occurs :

• against concentration gradient and requires ATP

• against concentration gradient and does not require ATP

• along concentration gradient but require ATP

• along concentration gradient but does not require ATP

Energy currency (reservoir) of the cells is:

• AMP

• ATP

• RNA

• DNA

Which cell organelle is covered by only one unit membrane ?

• Nucleus

• Plastids

• Mitochondria

• Lysosome

Cell membrane is made up of:

• protein

• cellulose

• lipids

• lipids, carbohydrates and protein

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

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

DNA remains absent in :

• chloroplast

• nucleus

• peroxysomes

• chromosome

The 'power house' of cell is :

• nucleus

• golgi body

• mitochondria

• chloroplast

Which of the following is related to glycosylation of protein?

• Lysosome

• Mitochondrium

• Peroxisome

• Rough endoplasmic reticulum