Which type of bond is responsible for the linking together of atoms within a water molecule?
a. hydrogen
b. ionic
c. polar covalent
d. nonpolar covalent
e. isotropic
ANSWER: c
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What is another name for the polymers of carbohydrates?
A. Triglycerides B. Nucleotides C. Polypeptides D. Polysaccharides
Lederberg and Tatum's experiments demonstrated that
A. bacteria can acquire genetic material from each other. B. bacteria do not release DNA into the environment for other bacteria to take up. C. bacteria must be in physical contact in order for bacteria to exchange genetic material. D. the genetic transfer occurred when the bio+, met+ phe-thr- strain transferred DNA to the bio-met- strain. E. All of these observations were made by Lederberg and Tatum.
Which of the following are the most abundant leukocytes in blood, so they are often the first responders at a site of infection?
A. Macrophage B. Neutrophils C. Basophil D. Cytokines E. Dendritic cell
If you want a plant to grow very large, which hormones might you want to treat it with? Check all that apply.
A. gibberellins B. cytokinins C. abscisic acid D. brassinosteriods