CBSE
Which cell organelle is covered by only one unit membrane ?
Nucleus
Plastids
Mitochondria
Lysosome
The controlling centre of cell is
nucleus
nucleolus
mitochondria
ribosome
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
A prokaryotic cell lacks
true nucleus
nuclear membrane
membrane bound organelles
All of the above
Energy currency (reservoir) of the cells is:
AMP
ATP
RNA
DNA
Passive food ingestion in Amoeba is known as :
import
invagination
circumfluence
circumvallation
Chromosomes in a bacterial cell can be 1 to 3 in number and
are not circular or linear
can be circular as well as linear within the same cell
are always circular
are always linear
Which of the following is a single membranous structure?
Lysosome
Nucleus
Mitochondria
Chloroplast
Principle protein of cillia and flagella is :
globulin
fibrin
flagellin
tubulin
Fluid mosaic model exhibits amphipathy because of
glycoproteins
phospholipids
lipids
glycolipids