Which of the following is a primary structural constituent of the plant cell secondary wall?

A) hemicellulose
B) extensin
C) collagen
D) pectin
E) cellulose


Answer: E

Biology & Microbiology

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While sitting in a hot car, your body begins to sweat, which cools the body back down. This illustrates a ________ feedback loop

Fill in the blank(s) with correct word

Biology & Microbiology

The most immediate potential benefits of introducing genetically modified crops include _____

I) creating crops that can grow on land previously unsuitable for agriculture II) creating crops with better potential for biofuel production III) creating crops with better nutritional attributes IV) increasing crop yield V) decreasing the mutation rate of certain genes A) only II, III, and IV B) only I, II, III, and IV C) only III, IV, and V D) I, II, III, IV, and V

Biology & Microbiology

A burn patient is treated with a skin graft, in which healthy skin containing ________ tissue is transplanted from one part of their body to the burned area.

A. connective B. nervous C. epithelial D. muscle

Biology & Microbiology

A tumor that has gained the ability to spread throughout the body, generally with life-threatening consequences, is known as a _____ tumor.

a. benign b. polyp c. malignant d. growth-promoting

Biology & Microbiology