Which teeth are used to crush and grind food?
a. canines only
b. incisors only
c. molars only
d. canines and incisors
e. incisors and molars
ANSWER: c
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A new mammal has been discovered in the thickly-forested mountains of Papua New Guinea. The squirrel-like animal lives in the canopy of the forest and has a diet rich in leaves. On occasion, however, the animal drops to the ground to quickly fill its cheeks with its own fecal droppings, for ingestion once it is safely back in the trees. The GI tract of this animal would most likely include ____________.
A. a simple stomach and a large cecum B. a simple stomach, a short small intestine and colon, and a small cecum C. a short intestine and no cecum D. a long small intestine with abundant villi and an appendix at the beginning of the large intestine E. a four-chambered stomach and long intestines Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you know about the intestinal tract of an animal that performs coprophagy? What other information is related to the question? Choose Answer · Given what you now know, what information is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The endomembrane system is composed of ____
a. microtubules, microfilaments, and intermediate filaments b. endoplasmic reticulum, Golgi apparatus, and peroxisomes c. vesicles, peroxisomes, and chloroplasts d. mitochondria, Golgi apparatus, and ribosomes e. plasma membrane, nuclear envelope, and thylakoid membranes
The X and Y chromosomes ____
a. are responsible for autosomal recessive inheritance b. will lead to color-blindness in all carriers c. are found paired with all 22 autosomal chromosomes d. are responsible for albinism e. play major roles in determining the sex of an individual
A concentration gradient is an example of
A. oxidation-reduction. B. potential energy. C. entropy. D. hydrolysis.