Which of the following statements about digestion is true?
A) Digestion occurs only in the stomach.
B) Digestion can be both mechanical and chemical, and it occurs both in the mouth and in the stomach.
C) Mechanical digestion occurs only in the stomach; chemical digestion occurs only in the mouth.
D) Digestion is the same thing as ingestion.
B
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The term that best describes how the components of a genome interact to produce an organism's traits is:
A. Proteomics B. Functional genomics C. Structural genomics D. Genomics
North Atlantic right whales, Eubalaena glacialis, were called "right whales" because they were the best whale for early whalers to kill. They have long baleen and lots of blubber and oil
When killed, they could be towed back to land for processing because they float. They once numbered in the millions, but the entire population of the species is now less than 400. The history of the right whale is an example of A) pollution. B) overexploitation. C) habitat destruction. D) competition.
Bacterial chromosomes, unlike eukaryotic chromosomes, often consist of a single replicon.
Answer the following statement true (T) or false (F)
If an animal is a vertebrate, this means that the animal
A. does not have a backbone. B. does not have true tissues. C. has a backbone. D. has a complete digestive tract. E. does not have a complete digestive tract.