A student is describing the tissue that makes up the walls of the alveoli in the lungs. It appears that these walls are composed of flattened cells arranged in a single layer to facilitate gas exchange
Which one of the following terms best describes this tissue? A) simple cuboidal
B) stratified squamous
C) simple squamous
D) simple columnar
E) stratified cuboidal
C
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In a process called , an army of plasma cells and memory cells are produced from stimulated B cells.
A. conjugation B. meiotic regeneration C. recombination D. clonal selection E. genetic shuffling
Animals that participate in the life cycles of pathogens and transmit pathogens from host to host are ________.
A. aerosols B. mechanical vectors C. fomites D. biological vectors E. droplet nuclei
How is aneuploidy different from polyploidy? What are the mechanisms by which aneuploidy and polyploidy are caused, and what are the consequences of these chromosomal alterations in terms of survival and fertility of the offspring?
What will be an ideal response?
How do scientists, lacking the ability to make controlled genetic crosses in humans, study the inheritance of and give genetic counseling on human genetic disorders?
What will be an ideal response?