Which hormone, secreted by glands in the intestine and stomach after a meal, acts to suppress the appetite?
a. ghrelin
b. leptin
c. PYY
d. gastrin
e. pepsin
C
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Enumerating the viable and total cell concentration of a population of a microbial isolate can be a really laborious task for a microbiologist
Especially when a microbiologist studies the same isolate for several years, it often becomes practical to determine the relationship between optical density (OD) and cell concentration. Once this relationship (determined by a standard curve) is determined, the OD of an isolate in a broth can be routinely used to determine the population's concentration. Why must a standard curve be prepared for each isolate when using OD measurements to determine cell concentration? Also describe an experiment that would generate this type of standard curve. What will be an ideal response?
Most of the creamy flesh of a corn kernel is ____ tissue
a. pollen b. endosperm c. ovary d. carpel e. ovulec
What are the results of nondisjunction, and why are these chromosome alterations so detrimental to an individual?
What will be an ideal response?
When considering the complexity of genetic material, multiple genes are found within a chromosome.
Answer the following statement true (T) or false (F)