Cortisol is a ____ secreted by the ____
a. amine; adrenal medulla
b. glucocorticoid; adrenal cortex
c. glucocorticoid; adrenal medulla
d. amine; adrenal cortex
e. catecholamine; adrenal glands
ANSWER: b
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Why is Caenorhabditis elegans an appropriate model organism for studying developmental processes?
A) C. elegans does not undergo programmed cell death B) C. elegans have meristems, regions that contain many stem cells C) C. elegans are transparent, and have only about 1000 cells, allowing the cells to be followed during development. D) C. elegans have millions of cells, but can be easily mutated to have no gastrulation. E) C. elegans have genes that are completely unique from mice and humans.
In some ciliate protozoa, the codons UAA and UAG encode glutamate, rather than acting as STOP codons. How does this compare to other species?
A. This is unusual – almost all species share the same “universal” genetic code. B. This is typical – every species has its own unique genetic code. C. This is not unusual – while most species have a similar genetic code, there are often variations for some of the amino acids. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about the genetic code? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Microvilli are present to increase the area available for absorpation in the
A. small intestine B. large intestine C. stomach D. gallbladder
What is a pedigree?
a. A cross between animals other than humans b. A type of genetic test to determine probability of inheritance c. A tool to document harmful traits only d. A type of family tree that can help answer questions about genes and their inheritance patterns e. A way of following genotypes that are the same as the phenotype