Which of the following functional groups would make a carbon-based compound the least polar?
A -
Phosphate
B -
Methyl
C -
Carboxyl
D -
Amino
2-
Which is not true about a photon?
A -
It is a packet of light energy
B -
The shorter the wavelength, the greater the energy of the photons
C -
It is trapped by photosynthetic unit
D -
It donates electron to reduce carbon dioxide to glucose
3-
If the ends of the following polysaccharide are pulled, which one would stretch the most?
A -
Glycogen
B -
Starch
C -
Cellulose
D -
None of these
4-
Which of the following elements is likely to form the least polar covalent bond with hydrogen?
A -
Nitrogen
B -
Oxygen
C -
Carbon
D -
Phosphorus
5-
The mitochondria were known in the nineteenth century to be osmotically active on the basis of evidence that
A -
the mitochondrial matrix is hypotonic to the cellular cytoplasm
B -
the mitochondrial matrix is hypertonic to the cellular cytoplasm
C -
mitochondria were derived from a symbiotic bacterium
D -
mitochondria are surrounded by a semi permeable membrane
6-
Mitochondria can be expected most numerous in
A -
green cells
B -
red blood cells
C -
muscle cells
D -
None of these
7-
Why do some redox reactions in cells result in the transfer of electrons from a reductant with a higher standard redox potential to an oxidant with a lower standard redox potential?
A -
Redox potentials are defined under standard conditions, and cellular conditions are typically not standard conditions
B -
The rules governing oxidation and reduction apply only in vitro, and not in vivo
C -
Electrons always go from reductants with high redox potentials to oxidants with low redox potentials
D -
None of the above
8-
Lysosomes are associated with
A -
photosynthesis
B -
respiration
C -
storage
D -
digestion
9-
Which cell type is likely to have the most mitochondria?
