In crassulacean acid metabolism (CAM) plants
A) stomata open during the day.
B) malate is stored in large vacuoles.
C) CO2 is transported directly into mesophyll cells.
D) the amount of carbon assimilated for each water molecule transpired is only 25 percent of that in C3 plants.
E) carboxylation and decarboxylation reactions occur in the same location at the same time.
Answer: B
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a. B cells b. mast cells c. eosinophils d. basophils
Dr. Edward Jenner realized that cows have a disease called cowpox, which is like a disease that infects humans called smallpox; Jenner noticed that milkmaids whose hands were infected with cowpox were not contracting smallpox. Jenner infected a child with the pus from a cowpox blister and found that the child did not contract smallpox. Which statement represents a supporting hypothesis?
A. The smallpox virus was so similar to the cowpox virus that the child's immune system ignored the smallpox virus B. The cowpox infection will have no effect on the child's immunity to the small pox virus. C. The cowpox virus prevented the small pox virus from entering the child's immune system. D. The cowpox infection will prevent the child from being infected by the small pox virus.
Blood typing tests are examples of hemagglutination reactions
Indicate whether the statement is true or false
The branches of adaptive immunity are
A) the cellular response, the humoral response, and the memory response. B) the humoral response and the memory response. C) the cellular response and the humoral response. D) the antigen response and the memory response. E) the cellular response and the memory response.