Molecular Cell Biology,

Which of the following statements about archaea is FALSE? A) They are prokaryotes. B) Some produce methane from carbon dioxide and hydrogen. C) They lack peptidoglycan in their cell walls. D) Some are thermoacidophiles; others are extreme halophiles. E) They evolved before bacteria. - CORRECT ANSWER-E) They evolved before bacteria. Which of the following characterizes the Domain Bacteria? A) prokaryotic cells; ether linkages in phospholipids B) complex cellular structure...

The centromere is a region in which - CORRECT ANSWER-chromatids remain attached to one another until anaphase Starting with a fertilized egg (zygote), a series of five cell divisions would produce an early embryo with how many cells - CORRECT ANSWER-32 If there are 20 chromatids in a cell, how many centromeres are there - CORRECT ANSWER-10 For a newly evolving protist, what would be the advantage of using eukaryote-like cell division rather than binary fission - CORRECT ANSWER-Cell divi...

Which of the following is characteristic of eukaryotic cells? A) binary fission B) membrane-bounded nucleus C) peptidoglycan cell wall D) 70S ribosomes E) smaller than 5 µm in diameter - CORRECT ANSWER-membrane-bounded nucleus The methanobacteria, halobacteria, and sulfobacteria are included in which domain? A) bacteria B) protista C) blue-green algae D) archaea E) eukarya - CORRECT ANSWER-archaea Experiments by Stanley Miller in the 1950s demonstrated that the first organic mol...

Chemical reactions carried out by living systems depend on the ability of some organisms to capture and use atoms from nonliving sources in the environment. The specific subset of these reactions that break down nutrients in food can be described as - CORRECT ANSWER-(b) catabolic When there is an excess of nutrients available in the human body, insulin is released to stimulate the synthesis of glycogen from glucose. This is a specific example of a(n) __________ process, a general process in w...

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