Which portion of the photosynthetic apparatus absorbs light?
A. both photosystem I and NADP reductase
B. both photosystem I and photosystem II
C. NADP reductase
D. photosystem II
E. photosystem I
Answer: B
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Which of the following procedures best determines the relative order, but not precise location, of a series of genes on a chromosome?
A. Physical mapping B. Cytogenetic mapping C. Linkage mapping
The most inclusive classification in the hierarchic system of organization?
What will be an ideal response?
The foramen ovale functions to:
a. permit blood to bypass the non-functional lungs in a fetus. b. establish the basic heart rate. c. prevent blood from flowing backward. d. carry blood to the lungs. e. transport poorly oxygenated blood.
Which of the following statements is true?
(a) Anaphase A must be completed before anaphase B can take place. (b) In cells in which anaphase B predominates, the spindle will elongate much less than in cells in which anaphase A dominates. (c) In anaphase A, both kinetochore and interpolar microtubules shorten. (d) In anaphase B, microtubules associated with the cell cortex shorten.