A newly synthesized polypeptide that will ultimately form a cytoplasmic protein will most likely fold into a tertiary structure with its ________ amino acid R-groups facing outward.
A. hydrophilic
B. hydrophobic
Answer: A
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A seabird that has adapted very well to humans is the:
a. gull. b. tern. c. frigate bird. d. penguin. e. puffin.
The cell line HeLa was isolated from a
a. chimpanzee. b. rat. c. human. d. guinea pig. e. dog.
Invertebrates
a. do not have a vertebral column. b. have a vertebral column. c. are all members of the phylum Chordata. d. do not include animals that are members of the phylum Chordata.
Which of the following is TRUE of chemokines?
A) They ensure production of enough leukocytes. B) They are involved in B lymphocyte activation and differentiation. C) They are chemotactic factors for leukocytes. D) They cause basophils and eosinophils to degranulate. E) They are substances used to signal between leukocytes.