How could you distinguish between a root hair versus a very small root?
A. Root hairs are extensions of single cells, while roots are multicellular.
B. Root hairs are white, while roots are brown.
C. Root hairs only absorb water, not nutrients like roots.
D. Root hairs do not have a cuticle.
E. The epidermis of a root hair is thinner than the epidermis of a root.
Answer: A
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All of the following are true statements about ATP EXCEPT that it is
A) the cell's principal compound for energy transfers. B) the molecule that all living cells rely on to do work. C) synthesized only within mitochondria. D) a short-term energy-storage compound.
A genetic mutation causes an individual to produce hemoglobins that do not change their binding affinity for oxygen, even after oxygen binds to a single heme site. How will this mutation affect the transport of oxygen through the individual's bloodstream?
A. More oxygen will be transported by hemoglobin to tissues throughout the body. B. Less oxygen will be transported by hemoglobin to tissues throughout the body. C. The same amount of oxygen will be transported by hemoglobin to tissues throughout the body.
An Rh- ______ baby born to an Rh- _______ mother is at risk for attack by maternal antibodies
a. negative; negative b. negative; positive c. positive; negative d. positive; positive e. neutral; positive
The “Adam’s apple” is located in the ____
a. Glottis b. Pharynx c. Trachea
d. Larynx e. Bronchus