An infection of the thin layer of tissue around the inner cavities of the heart itself would affect the ________

A) pericardium
B) endocardium
C) myocardium
D) sinoatrial node


B

Biology & Microbiology

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In the process of noncyclic photophosphorylation

A. photosystems I and II are both required. B. water is split to form oxygen gas. C. electrons from water flow through electron transport chains resulting in synthesis of ATP and NADPH. D. All of the choices are correct.

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The allele frequency of all the alleles of a gene present in the population must add up to 1. (Allele frequencies of all alleles for a gene must always add up to be 1, which is 100% of the population.)

A. true B. false

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Annelids and arthropods have a dorsal hollow nerve cord

____________________ Indicate whether the statement is true or false.

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During meiosis II, _____.

A) the sister chromatids separate from one another B) homologous chromosomes separate from one another C) each duplicated chromosome lines up with its partner D) crossing over occurs E) all of the choices are events seen in meiosis II

Biology & Microbiology