Menstrual flow results in the discharge of:

a. the follicle
b. the corpus luteum
c. the uterine lining
d. surface cells from the vagina
e. blood from the blood vessels on the outer surface of the uterus


c

Biology & Microbiology

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Which of the following is not an organelle?

A. lysosome B. chloroplast C. mitochondria D. ribosome E. nucleus

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Hemophilia is a sex-linked recessive gene that causes a blood disorder. What are the chances that the daughter of a normal man and a heterozygous woman will have hemophilia?

A) 25% B) 0% C) 50% D) 100% E) 75%

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What is the pathogenic process underlying Rocky Mountain spotted fever?

A) cellular damage via potent exotoxins B) damage to blood vessels C) stimulation of a strong immune response D) interference with host cell metabolism E) formation of biofilms in host tissues

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Wild type bread mold can grow in a minimal medium without supplements, while certain mutated strains can only grow in a minimal medium that is supplemented with specific intermediates found in the following metabolic pathway for arginine synthesis.  See the figure below for an overview of the arginine biosynthetic pathway.A strain that can grow in minimal medium containing ornithine, citrulline, or arginine, but not in minimal medium alone would have a mutation in the gene that encodes forMcGraw-Hill Education

A. enzyme 1. B. enzyme 2. C. enzymes 1, 2, and 3. D. The strain would be the wild type with no genetic mutations. E. enzyme 3.

Biology & Microbiology