Which one of the following risks is increased by ART?
A. Ectopic pregnancies
B. Low birth weight
C. Multiple births
D. Passing on male infertility to sons
E. All of these
E
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The following bacterial species are all implicated in dental caries EXCEPT
A) Fusobacterium. B) Borrelia. C) Streptococcus. D) Lactobacillus.
Circulatory systems ____
a. are found in all animals b. result in slow distribution of nutrients and gases c. include one or more hearts d. are always closed systems e. are found in cnidarians and flatworms
Autoclaves are designed to kill which of the following heat-resistant microbes?
A) endospores B) prions C) vegetative bacterial and fungal cells D) viruses
A seed contains an embryo mutant for gibberellic acid (GA) receptors. What phenotype would you expect to result in the seedling?
A. No mutant phenotype until the plant is older. B. Malformed cotyledons due to defects in development. C. Yellow instead of green due to chloroplast failure. D. Poor growth due to unusable nutrient reserves.