Blood calcium homeostasis is maintained by?
a. Calcium excreted or withheld by the kidneys
b. Hormones that cause cells to deposit or absorb calcium on/from the bones
c. Fat cells that excrete calcium via exocytosis
d. liver hormones which remove or add calcium from/to the bloo
Answer: b. Hormones that cause cells to deposit or absorb calcium on/from the bones
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The function of condensin is to
A. cause the chromosomes to uncompact following mitosis. B. coat the chromosomes and condense them into heterochromatin through the compaction of radial loops C. hold the DNA to the histone proteins in the nucleosome core particle. D. trigger DNA to be compacted in a nucleosome core particle. E. none of these
An increase in blood glucose ______ secretion of insulin.
A. increases B. decreases
By the early 1900s, scientists had determined that heritable information existed as discrete units called genes, which were located on ________
Fill in the blank(s) with correct word
Which of the following is LEAST likely to result from a point mutation?
a. frameshift b. silent mutation c. transition d. transversion