In Figure 39-3, the responses initiated at point A in response to an increase in body temperatureinclude:
a. a decrease in sweating and panting.
b. a decrease in muscle activity.
c. a constriction of blood vessels.
d. an increase in metabolism.
e. shivering.
B
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People with Turner syndrome have ________ chromosome constitution.
A) XX B) XXY C) XO D) XXX
As part of observation in your scientific method, you discover that your strawberry plants are producing plantlets that are identical to the parent plant. This demonstrates that they reproduce by
A. development and maturation. B. fragmentation. C. development and adaptation. D. sexual reproduction. E. asexual reproduction.
What is the structure that holds the chromatids together?
A. karyotype B. centromere C. chromatin D. chromosomes E. none of these
Cyclosporine is a drug sometimes used to prevent transplant rejection after organ transplant surgery. This drug specifically disrupts cell-mediated immunity by cytotoxic T cells. Which of these events can be predicted based on this information?
A) T helper cells will no longer be produced. B) Autoimmune disorders will be a potential side effect. C) Antigen presentation by macrophages and dendritic cells will be impaired. D) Antibody production will not be disrupted in the recipient. E) The recipient will be susceptible to repeated infections with common bacteria such as staphylococci and streptococci.