How do humans use red algae polysaccharides?
A. Thickeners
B. Adhesives
C. Herbicides
D. Detergents
Answer: A
You might also like to view...
Fire is an example of __________
a. a disturbance b. an opportunistic activity c. a life zone d. both a disturbance and opportunistic activity
A flower must have one or more ____ to be able to make seeds
a. stamens b. sepals c. carpels d. stamens and sepals e. stamens and carpels
Which of the following occurs in the placenta?
A) Eroding blood vessels in the endometrium bathe chorionic villi in pools of maternal blood. B) Hormones are absorbed to prevent them from influencing the developing fetus. C) Fetal blood and maternal blood mix. D) All substances in maternal blood that may be harmful to the fetus are prevented from moving across the walls of the villi. E) The amnion and the chorion grow into the endometrium.
Which of the following statements about transmission electron microscopy is INCORRECT?
A. Two-dimensional images are produced. B. Magnets serve as lenses. C. Up to 1,000,000X magnification may be achieved. D. Living specimens may be used. E. Stains can be applied to increase electron density.