Q: A digestive system functions in _______. a. secreting enzymes
A digestive system functions in _______. a. secreting enzymes b. absorbing compounds c. eliminating wastes d. all of the above
See AnswerQ: A python can survive by eating a large meal once or twice
A python can survive by eating a large meal once or twice a year (Figure 39.4). When it does eat, microvilli in its small intestine lengthen fourfold and its stomach pH drops from 7 to 1. Explain the...
See AnswerQ: The enzyme pepsin is activated in the ________. a. mouth
The enzyme pepsin is activated in the ________. a. mouth b. stomach c. small intestine d. large intestine
See AnswerQ: Most nutrients are absorbed in the _________. a. mouth
Most nutrients are absorbed in the _________. a. mouth b. stomach c. small intestine d. large intestine
See AnswerQ: A bird’s keratin-lined ______ helps it grind up food.
A bird’s keratin-lined ______ helps it grind up food. a. pharynx b. crop c. gizzard d. gastrovascular cavity
See AnswerQ: Carrying multiple offspring at the same time increases the risk of some
Carrying multiple offspring at the same time increases the risk of some birth defects. FIGURE 42.16 shows the results of Yiwei Tang’s study of birth defects r...
See AnswerQ: The use of off-road recreational vehicles may double in the
The use of off-road recreational vehicles may double in the next twenty years. Enthusiasts would like increased access to government-owned deserts. Some argue that it’s the perfect place for off-roade...
See AnswerQ: The end product of cleavage is a ______. a. gamete
The end product of cleavage is a ______. a. gamete b. blastula c. gastrula d. zygote
See AnswerQ: Carrying multiple offspring at the same time increases the risk of some
Carrying multiple offspring at the same time increases the risk of some birth defects. FIGURE 42.16 shows the results of Yiwei Tang’s study of birth defects r...
See AnswerQ: The outermost germ layer in a vertebrate gastrula is The ______.
The outermost germ layer in a vertebrate gastrula is The ______. a. endoderm b. ectoderm c. mesoderm d. dermis
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