Throughout the digestive tube are a number of
sphincters. The first sphincter encountered by
food being digested is between the ___ and the
___.
a. esophagus --stomach
b. pharynx--esophagus
c. stomach--small intestine
d. small intestine--large intestine
e. colon--rectum
A
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Organic molecules _______.
a) always contain carbon and hydrogen b) always contain hydrogen c) always contain carbon d) are always food molecules e) are found only in organisms, hence their name
Mendel's experiments led him to the conclusion that individuals have two factors for each trait that separate during gamete formation, resulting in gametes with one factor for each trait. In addition, fertilization results in a new individual with two factors for each trait again. He referred to this as the ________.
A. law of pedigrees B. law of independent assortment C. factorial law D. law of segregation
Which of the following is an amino group?
A) -OH B) -NH2 C) -COOH D) -CO
Which of the following statements regarding animals is false?
A) Animals that eat plants are called herbivores. B) Animals that eat meat are called carnivores. C) Animals that live in or on their food source and eat their way through it are called suspension feeders. D) Animals that extract food particles suspended in the surrounding water are called fluid feeders.