Which of the following is NOT found in an arteriole?

a. elastic layer
b. basement membrane
c. rings of smooth muscle
d. valve
e. endothelium


Answer: d

Biology & Microbiology

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Viruses transmit bacterial genetic material from one bacterium to another in a type of horizontal gene transfer referred to as ____

Fill in the blank with the appropriate word.

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Determining the exact nucleotide sequence of a gene or gene fragment obtained from an unknown organism is based on which of the following methods?

a. Hybridization b. Sequencing c. Amplification (PCR) d. Genotypic

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Which of Mendel's laws explains why the segregation of alleles for a gene on one chromosome does not influence the segregation of alleles for a gene on another chromosome?

A. law of population dynamics B. law of segregation C. law of random fertilization D. law of crossing-over E. law of independent assortment

Biology & Microbiology

The epiglottis of a human covers the glottis when he or she is

A) talking. B) breathing. C) swallowing. D) yawning. E) sleeping.

Biology & Microbiology