In terms of meiosis, what is the essential difference between the life cycle of animals and the life cycle of plants?
a. Plants alternate between haploid and diploid generations.
b. Animals do not have a haploid phase.
c. Animals have a dominant haploid phase.
d. Plants alternate between diploid and polyploid generations.
Ans: a. Plants alternate between haploid and diploid generations.
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Which characteristic belongs to the chaparral biome?
A) sparse grasses B) cool, wet summers and freezing winter temperatures C) plants with seeds that will germinate only after exposure to a hot fire D) animal species limited to lizards and snakes
The hominid australopithecines are generally accepted to be different from modern humans because
A. only humans are bipedal. B. the human skull is apelike in appearance with a strongly projecting face. C. only humans are meat eaters. D. human brains on an average are at least twice as large in size. E. human arms are longer than legs.
Answer the following questions true (T) or false (F)
1. A reversible reaction is one in which the forward and reversible reactions are both possible such as: AB ? A + B and A + B ? AB. 2. A phosphodiester bond links a fatty acid to a glycerol molecule to form a fat or an oil. 3. Spirochetes move in a corkscrew-rotary motion due to a specialized periplasmic flagellum.
Genes are located on ________
A) chromosomes B) the cytoplasm C) mitosis D) the centromere