The primary structure of a protein is
A) an alpha helix or a pleated sheet.
B) the amino acid sequence of the polypeptide chain.
C) composed of two or more polypeptide chains.
D) maintained by hydrogen bonds.
Answer: B
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Which of the following is an important characteristic for a model organism?
A) marginally characterized B) difficult to manipulate in the laboratory C) prone to random changes that alter primary characteristics D) widely studied E) all of the above
When looking at plant and animal cells with an electron microscope, you notice that the plant cells have more Golgi membranes than the animal cells. This is most likely because unlike in animal cells, in plant cells the Golgi apparatus is involved in the production of:
A. chloroplasts. B. mitochondria. C. cytoplasm. D. cell walls.
Reaction that oxidizes pyruvate with the release of carbon dioxide; results in acetyl CoA and connects glycolysis to the citric acid cycle.
What will be an ideal response?
Which of the following features would disqualify a plant from being classified as a bryophyte?
A. dispersal of gametes by wind B. nonvascular tissues C. presence of flagellated sperm D. ability to reproduce sexually and asexually E. gametophyte is the dominant stage of the life cycle