Typically as magnification increases, the field of view also increases.
a. true
b. false
Ans: b. false
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What removes Ca2+ from the inside of an axon terminal of a chemical synapse after an electrical
impulse has passed?
a. ion channels b. active transport pumps c. passive carrier proteins d. exocytosis e. simple diffusion through the plasma membrane
Usually, the alleles are written in pairs to reflect that each individual has two alleles for every gene, one from each parent, such as PP, Pp, or pp. These symbols are called the ______.
Fill in the blank(s) with the appropriate word(s).
Generally, animals cannot digest (hydrolyze) the glycosidic linkages between the glucose molecules in cellulose. How then do cows get enough nutrients from eating grass?
A. They have to eat a lot of it. B. Microorganisms in their digestive tracts hydrolyze the cellulose to individual glucose units. C. Cows and other herbivores are exceptions and make some cellulose-digesting enzymes. D. The flat teeth and strong stomach of herbivores break the cellulose fibers so that the cows get enough nutrition from the cell contents. E. All of the above.
Which statement is TRUE about mitosis in animal cells?
A. The location of the centromere is the same for each chromosome. B. Spindle poles originate next to each other in the cytoplasm. C. The spindle apparatus is composed of actin protein molecules. D. Chromosomes arriving at each spindle mark the beginning of telophase. E. Sister chromatids stay connected through anaphase.