Achondroplasia is a form of human dwarfism. If two individuals with achondroplasia have children with the following ratio, 2 dwarf to 1 wild type, what is the means of inheritance of this phenotype?
A) epistasis
B) recessive lethal
C) dominant lethal
D) simple recessive
E) simple dominance
Answer: C
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Which of the following is the highest (or most complex) level of structure for genetic material?
A. nucleotide B. double helix C. DNA D. gene E. chromosome
Respond to statements 110–113 in reference to the four kinds of
energy listed below. a. chemical b. mechanical c. thermal E 110. Receptors on the tongue detect variation in this kind of energy. M 111. Olfactory receptors detect this kind of energy. M 112. Ears detect this kind of energy. E 113. The warmth you feel from a campfire is a result of detecting this kind of energy.
____ strips an area of vegetation and soil, creating an ecological dead zone.
A. Biological magnification B. Renewable energy C. Ecological restoration D. Ground mining E. Surface mining
A molecule that is phosphorylated
A) has an increased chemical reactivity; it is primed to do cellular work. B) has a decreased chemical reactivity; it is less likely to provide energy for cellular work. C) has been oxidized as a result of a redox reaction involving the gain of an inorganic phosphate. D) has been reduced as a result of a redox reaction involving the loss of an inorganic phosphate. E) has less energy than before its phosphorylation and therefore less energy for cellular work.