Luke sprained his ankle, tearing some of the collagen protein that forms his ligaments. Some types of collagen consist of three polypeptide chains twisted together to form a rope-like strand. What level of protein structure does this rope-like strand represent?
A. Primary
B. Secondary
C. Tertiary
D. Quaternary
D
Biology & Microbiology
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All land plants carry the LFY gene, which carries out similar functions in all plants
a. True b. False
Biology & Microbiology
An example of a beneficial mutation is
A) a mutation in collagen that causes the skin to be extra stretchy. B) the mutation that causes sickle cell disease. C) a mutation in the CCR5 gene. D) a mutation in a cytokine gene that causes an allergy.
Biology & Microbiology
Does increasing the predation rate increase or decrease the variation in the size of the prey population?
a. increase b. decrease c. no difference
Biology & Microbiology
An electrocardiogram (ECG, EKG) is a measure of the heart's:
a. electrical system. b. blood flow to the body. c. contraction rate. d. blood flow to heart muscle. e. pumping ability.
Biology & Microbiology