Unlike animal cells, plant cells have ________ and ________. Unlike plant cells, animal cells have ________
A) chloroplasts; cell walls; centrioles
B) centrioles; chloroplasts; cell walls
C) chloroplasts; cell walls; a nucleus
D) centrioles; cell walls; large central vacuoles
Answer: A
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An example of gene regulation at the level of translation is the ability of the Bicoid protein to repress translation of caudal mRNA and for Nanos protein to repress translation of hunchback mRNA
A. true B. false
A transmembrane protein has 1000 amino acids. The fifth amino acid is found on the external surface of the cell membrane. It interacts with the aqueous environment outside the cell
Amino acids 25 and 205 are covalently bonded to each other and are required to give the protein its three-dimensional shape. Amino acid 554 is found on the outer surface of the protein, but it is deep in the interior of the membrane. Amino acid 979 is found on the external surface of the protein, where it forms a weak ionic bond with a chloride ion. Can you identify each of the numbered amino acids by structural group and name? Please note that there may be more than one specific amino acid possible in some cases. Amino acids: 5 25 205 554 979 What will be an ideal response?
Cellular respiration demonstrates the theme of matter and energy in that
A) matter in food is turned into energy in ATP. B) energy in food is transferred to energy in ATP. C) matter in ATP is used to fuel biosynthesis. D) energy in food becomes matter in forming new molecules.
In which of the following diseases can gender be considered a viable predisposing factor?
A) urinary tract infections B) pneumonia C) salmonellosis D) tetanus E) anthrax