Which of the following statements about transpiration is true?
A. Transpiration is an active process,
requiring ATP.
B. Transpiration helps cool plants' leaves.
C. Transpiration drives the movement of
water from the roots to the leaves.
D. Transpiration involves the loss of CO2 in
addition to water.
E. Plants have no way of controlling water
loss to transpiration.
C
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Synaptonemal complexes form during
A. prophase of meiosis I. B. prophase of meiosis II. C. prophase of meiosis I and meiosis II. D. prometaphase of meiosis I. E. prometaphase of meiosis II.
Why might tardigrades make good organisms for space flight? What will be an ideal response?
What is the function of polar bodies?
A. They provide nourishment for the developing embryo. B. They prevent more than one sperm from entering the egg. C. They produce hormones that allow ova to develop properly. D. They provide fructose to the semen for sperm motility. E. None of these are functions of polar bodies.
In the structural organization of many eukaryotic genes, individual exons may be related to which of the following?
A) the sequence of the intron that immediately precedes each exon B) the number of polypeptides making up the functional protein C) the various domains of the polypeptide product D) the number of start sites for transcription