T cells produce and secrete factors that do not directly interact with invading microorganisms but that augment the body's defense mechanisms. These molecules are called ________.
A. augmetins
B. antibodies
C. cytokines
D. immunogens
Answer: C
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Which type of hemorrhagic fever is also known as "breakbone fever" because of the severe pain in muscles and joints?
A. Lassa fever B. Marburg C. Ebola D. Dengue fever E. Chikungunya
Rigor mortis occurs when ____
a. ATP levels fall b. calcium levels rise c. potassium levels fall d. acetylcholine stimulates contraction e. ADP is produced
Diabetes mellitus results from a disorder of glucose uptake by systemic cells and can result in a number of symptoms including high levels of blood glucose and the presence of glucose in the urine. Which of the following is a reasonable explanation for the presence of glucose in the urine?
A. A lack of sodium in the filtrate blocks the function of the Na+/glucose symport protein. B. High levels of glucose interfere with ADH function. C. The reabsorption capacity of the kidney for glucose is exceeded. D. The high levels of glucose induce a "dehydrated" state that promotes production of a large amount of dilute urine. E. None of the choices given are a logical explanation for this observation.
For two genes that show independent assortment, what is the frequency of recombination?
A. 100% B. 75% C. 50% D. 25% E. 0%