On average, nearly half of the total cell volume is occupied by two categories of organelles: ____________________ organelles and ____________________ organelles
Fill in the blank(s) with correct word
membranous; non-membranous
non-membranous; membranous
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The ion(s) or molecule(s) labeled A is (are)
A) CO2.
B) H2O.
C) O2.
D) H+.
E) 2H.
In the last step of blood coagulation,
a. fibrin is converted to fibrinogen. b. fibrinogen is converted to fibrin. c. platelet factor enter numerous reactions. d. prothrombin is converted to thrombin. e. thrombin is converted to prothrombin.
The spindle apparatus is fully formed by the end of
metaphase II. anaphase II. prophase II. prometaphase II. telophase II.
Damage to the substantia nigra causes a decrease in the neurotransmitter dopamine. This causes a gradual, generalized increase in muscle tone, which is the main symptom of
A) Parkinson's disease. B) rabies. C) Alzheimer's disease. D) myasthenia gravis. E) tetanus.