At the start of mitosis, how many sister chromatids are present in a human cell?
A. 23
B. 92
C. 46
D. 12
B
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Weak bonds are important for the ______________ structure of proteins
A. primary B. secondary C. tertiary D. quarternary E. secondary, tertiary, AND quarternary
Which of the following is NOT a domain?
A. Eukarya. B. Archaea. C. Protista. D. Bacteria. E. Both Bacteria and Protista.
Which of the following questions is most appropriate to an investigation at the population level?
A) What is the effect of diminished resources on an individual's life span? B) What is the relationship between resource availability and birthrate? C) What factors influence the distribution of tropical forests? D) How long does it take for carbon to be cycled from the atmosphere into living tissue?
The most common type of neuron in vertebrates is the _________ neuron.
A) unipolar B) multipolar C) bipolar D) semipolar