In which phase of mitosis does the number of chromosomes in a cell double?
a. interphase.
b. telophase.
c. prophase.
d. anaphase.
e. metaphase.
Ans: d. anaphase.
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In the inherited disease ichthyosis, the skin is rough, brown, and very scaly because the uppermost layer cannot peel off as easily as skin normally does. The part of the skin that is affected is the
A. subcutaneous layer. B. dermis. C. epidermis. D. basement membrane.
Blood CO2 content is carried in the form of all of the following, EXCEPT
A) Dissolved CO2. B) Bicarbonate. C) Carbaminohemoglobin. D) Carbonate.
To buffer the body's extracellular fluid compartment, dihydrogen phosphate acts as a strong base and prevents acidosis of the plasma
Indicate whether this statement is true or false.
Which of the following is unique to atoms of each element?
A. The number of electrons B. The ratio of protons to electrons C. The number of neutrons D. The number of bonds it can form E. The number of protons