What causes differences in life history traits?
A. Limits on available resources
B. Limits on available resources and declining likelihood of survival over time
C. Declining likelihood of survival over time
D. All things listed
E. Genes that cause a variety of effects on phenotype
Ans: D. All things listed
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Which of the following ECM molecules is probably the most abundant organic molecule on Earth?
A. proteoglycans B. collagen C. chitin D. cellulose E. laminins
All cells in an embryo have the same genes, but they express different subsets of this genome. Selective gene expression is the basis of:
a. cleavage b. cell differentiation c. fertilization d. gamete formation e. organ maturation
The region of the human brain is that is critically important for monitoring and controlling movements is the
A. cerebral cortex. B. hypothalamus. C. cerebellum. D. basal nuclei. E. medulla oblongata.
The first organisms
a. absorbed their food supplies from the organic molecules that surrounded them. b. were eukaryotes. c. utilized fermentation for energy production. d. utilized ATP. e. did all of these except they were NOT eukaryotes.