At the current rate of description, how long will it take to compile a complete catalog of life on Earth?
a. 5 years
b. 50 years
c. 500 years
d. 5000 years
c. 500 years
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What DNA form is most common in living organisms?
A. A DNA B. B DNA C. Z DNA D. Triplex DNA
Neurons in the higher vocal center of a male finch's brain are stimulated to proliferate by testosterone
Indicate whether the statement is true or false.
IgE antibody, which is associated with allergic responses,
A) encourages mast cells and basophils to release chemicals such as histamine and leukotrienes. B) can be found bound to B cells. C) is resistant to destruction by stomach acid. D) is usually found circulating in the bloodstream. E) is passed from mother to child through breastfeeding and may prevent the development of allergies in the child.
What is the advantage of cells being so small?
A. Small cells contain a greater quantity of enzymes than large cells. B. Small cells do not require energy and get everything they need from osmosis. C. The cell has a smaller surface area to volume ratio which means it can move nutrients into the cell and waste out more efficiently. D. The cell then has a larger surface area to volume ratio which means it can move nutrients into the cell and waste out more efficiently.