You have a bacterial infection. Your immune system will be able to distinguish this foreign invader from other cells by ________
A) recognizing cell adhesion molecules (CAMs)
B) finding glycolipids on the plasma membrane
C) identifying glycoproteins on the plasma membrane
D) determining the presence or absence of a nucleus
C
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You are a genetic counselor, and a couple comes to you with concerns that if they have a child together, he or she
could have hemophilia. The man has an X-linked recessive form of hemophilia, but the woman does not. Genetic tests reveal the woman is not a carrier for hemophilia. How should you advise them?
a. Half of their children will have hemophilia. b. All of their sons and half of their daughters will have hemophilia. c. None of their children will have hemophilia, but all of their daughters will be carriers for hemophilia. d. Each of their sons will have a 50% chance of having hemophilia, and each of their daughters will have a 50% chance of being carriers.
e. All of their sons will have hemophilia, and all of their daughters will be carriers.Which winds push surface water toward the equator?
a. trade winds b. westerlies c. easterlies d. polar e. adiabatic
Parapatric speciation occurs most often
a. within in the same home range. b. when a population extends across different habitats within the same home range.. c. within a group of interbreeding populations. d. on either side of geographic barriers. e. by polyploidy.
The somatic hypermutation (SHM) that contributes to immunoglobulin diversity is similar to the process of
a. resolution of a Holliday junction. b. class switch DNA recombination (CSR). c. somatic recombination. d. double-strand break repair. e. nonhomologous end-joining.