Plants have evolved all of the following methods to help them conserve water except
A. a waxy cuticle.
B. stomata.
C. mycorrhizae.
D. spores.
Answer: C
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Explain why a pregnant woman should not have an abdominal X-ray and identify the possible consequences to the
fetus if she does. What will be an ideal response?
The random shotgun method is used in
A) amplification of unknown DNA. B) transforming plant cells with recombinant DNA. C) genome sequencing. D) RFLP analysis. E) forensic microbiology.
Using technology in the field of agriculture has enabled farmers to feed a growing human population.
a. true b. false
A newly-generated T cell can recognize MHCs and is not self-reactive. What is its fate?
A) It is signaled for destruction via apoptosis. B) It will migrate to the lymphoid tissues to await activation by its antigen. C) It will undergo genetic shuffling to change its receptor to increase self-tolerance. D) It will become part of an autoimmune attack in the body's tissues at some time in the future. E) It will migrate to the bone marrow for screening for the ability to make antibodies against self-antigens.