The most successful mammals belong to the marsupials group.
Answer the following statement true (T) or false (F)
False
The most successful mammal group are the placental mammals.
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Which of the following is least likely to be part of a cell membrane?
A) proteoglycans B) phospholipids C) glycoproteins D) transport proteins E) enzymes
Most multivitamins should be taken with a meal for which reason?
A. to provide the energy needed to use the vitamins B. to help with the absorption of water-soluble vitamins C. to help with the absorption of fat-soluble vitamins D. to provide food for the vitamins to break down E. to provide the energy needed to synthesize more vitamins
The pH of the digestive tract is
A) low throughout. B) basic in the stomach and acidic throughout the rest of the tract. C) acidic in the stomach and neutral in the intestines. D) high throughout. E) neutral throughout.
Which of the following statements is not true concerning olfactory cells?
A. Olfactory cells are modified neurons. B. Olfactory cells end in a tuft of about five cilia. C. Olfactory cells are located in the roof of the nasal cavity. D. Each olfactory cell has its own individual neuron leading to the olfactory bulb. E. Each olfactory cell has only one out of several hundred different types of receptor proteins.