Amanda is curious to know how many chromosomes are in each somatic cell of a chicken she was relishing. She looks it up and finds that it has 78 chromosomes. Therefore, a sperm or an unfertilized egg from a chicken would contain ________ chromosomes.
A) 23
B) 39
C) 46
D) 78
B) 39
Biology & Microbiology
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Which of the following best defines autoimmunity?
a. Hypersensitivity to self-antigens b. Delayed immune system response c. Inherited immune system insufficiency d. Immunodeficiency present from birth
Biology & Microbiology
The steroid hormone ADH causes the reabsorption of water in the kidney by increasing the number of
aquaporin3 water channels in the plasma membrane of the collecting ducts
Indicate whether the statement is true or false.
Biology & Microbiology
During the process of filtration, what part of blood passes through the filter?
a. red blood cells b. white blood cells c. plasma proteins d. capillary endothelial cells e. plasma
Biology & Microbiology
A system that compensates for pH fluctuations by donating or accepting H+ is known as a(n) ____
a. acid b. base c. salt d. buffer e. antioxidant
Biology & Microbiology