Exercise: Plant Structure

Questions for: Plant Structure

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
Answer: D
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Which of the following elements is likely to form the least polar covalent bond with hydrogen?
A:
Nitrogen
B:
Oxygen
C:
Carbon
D:
Phosphorus
Answer: C
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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
Answer: B
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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
Answer: D
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Which of the following functional groups would make a carbon-based compound the least polar?
A:
Phosphate
B:
Methyl
C:
Carboxyl
D:
Amino
Answer: B
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