Chyme is a mix of ____ and gastric fluid
a. salivary amylase
b. pepsin
c. saliva
d. food
e. acid
d
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In humans, the sickle-cell trait is caused by a single defective allele, but sickle-cell disease only occurs in individuals that are homozygous for the sickle-cell allele. A man and woman each carry the trait, but do not have sickle-cell disease. What is the probability that their first two children will both have sickle-cell disease?
A. 1/16 B. 1/8 C. 1/4 D. 3/8 E. 1/2 Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about monohybrid crosses? About determining the probability of two independent events? Consider Possibilities · What other information is related to the question? Which information is most useful? 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?
The type and amount of sediment found on a continental shelf is not important to organisms that live there
Indicate whether the statement is true or false
Which statement BEST describes the role and importance of mobile genetic elements in genomes?
A) Mobile genetic elements almost always have either neutral or deleterious consequences for their host. B) Mobile genetic elements are largely beneficial to hosts because they introduce new phenotypic variation into a population via transposition and/or duplication of important genes. C) Mobile genetic elements can have deleterious, neutral, OR beneficial consequences for the host organism, and all three kinds of outcomes are common. D) Mobile genetic elements are especially important for plant genomes such as the tomato, but they are not present in most animal genomes.
Both smooth and cardiac muscle fibers
A) contain a single nucleus. B) have multiple nuclei. C) possess intercalated discs. D) are striated.