In the developing embryo, what precedes the formation of a long bone?
a. cartilage
b. collagen
c. periosteum
d. osteons
e. Haversian (central) canals
A
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In legumes, it has been shown that thigmotropism is correlated with _____
A) abscisic acid (ABA)-stimulated closing of guard cells caused by loss of K+ B) rhythmic opening and closing of K+ channels in motor cell membranes C) senescence (the aging process in plants) D) flowering and fruit development
Which of the following is a CORRECT matching of an organelle and its function?
a. Golgi apparatus - protein synthesis b. lysosome - transport c. mitochondrion - cell respiration d. endoplasmic reticulum - houses DNA
The R locus determines flower color in a new plant species. Plants that are genotype RR have red flowers, and plants that are rr have white flowers. However, Rr plants have pink flowers. What type of inheritance does this demonstrate for flower color in these plants?
A. complete dominance B. lethal alleles C. incomplete dominance D. codominance E. complementation
Which of the following choices is more likely to contain pathogenic organisms?
A) The resident bacterial population is more likely to contain pathogenic organisms. B) The transient bacterial population is more likely to contain pathogenic organisms.