Hemostasis in vertebrates includes all EXCEPT
which of the following?
a. blood clot formation
b. activation of factor X
c. release of iron to aid in the clumping of platelets
d. vascular spasms
e. platelets releasing substances that cause them to
attract each other
Answer: c
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The gametophyte generation of plants begins ____, where meiosis produces ____
a. after fertilization; a multicellular, diploid organism b. after fertilization; a multicellular; haploid organism c. in the sporangia; a multicellular; diploid organism d. in the sporangia; haploid spores e. in the sporangia; diploid spores
Some time later, she finds that the introduced strand separates into single-stranded RNAs, one of which is degraded. What does this enable the remaining strand to do?
A) attach to histones in the chromatin B) bind to complementary regions of target mRNAs C) activate other siRNAs in the cell D) bind to noncomplementary RNA sequences
Imagine a chart showing the number of people in different age groups (0 to 5 years old) as blocks in proportion to the number of people in each age group. If each of these age blocks is shown stacked with the youngest at the bottom and the oldest at the
top, what shape will the whole stack assume when there is a rapid population doubling time? A) inverted pyramid B) expanding pyramid C) uniform column D) hourglass
Sister chromatids are separating from each other during:
A) anaphase. B) metaphase. C) prophase. D) telophase.