To make the skin more flexible and remove wrinkles ______ could be injected beneath a person's skin.
A. collagen
B. proteoglycan
C. cellulose
D. laminin
E. fibronectin
A. collagen
Biology & Microbiology
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Which of the following is a net product of the Krebs cycle for each molecule of pyruvate generated in glycolysis? Select all correct choices
A. 1 ATP B. 3 NADH C. 1 FADH2
Biology & Microbiology
Assume that you are studying a trait determined by a number of polygenes. If there are seven phenotypic categories, how many genes are probably involved?
What will be an ideal response?
Biology & Microbiology
In this diagram, what trait is represented by #5?
What will be an ideal response?
Biology & Microbiology
The first vertebrates appear in the fossil record during the
A. Cambrian Period. B. Carboniferous Period. C. Triassic Period. D. Devonian Period. E. Proterozoic Era.
Biology & Microbiology