AP BIOLOGY MIDTERM Exam Questions With Correct Answers 100% Verified.

AP BIOLOGY MIDTERM Exam Questions With Correct Answers 100% Verified. The somatic cells derived from a single-celled zygote divide by witch process? - answermitosis One difference between cancer cells and normal cells is that cancer cells ___________. - answercontinue to divide even when they are tightly packed together Chemical signal pathways _______________. - answeroften involve the binding of signal molecules to a protein on the surface of a target cell Glucose diffuses slowly through artificial phospholipid bilayers. The cells lining the small intestine, however, rapidly move large quantities of glucose from the glucose-rich food into their glucose poor cytoplasm. using this information, which transport mechanism is most probably functioning in the intestinal cells? - answerfacilitated diffusion A molecule with the chemical formula C6H12O6 is probably a _____. - answercarbohydrate and monosaccharide only The difference between pinocytosis and receptor-mediated endocytosis is that __________. - answerpinocytosis is nonselective in the molecules it brings into the cell, whereas receptor- mediated endocytosis offers more selectivity Binding of a signaling molecule to which type of receptor leads directly to a change in distribution of ions on opposite sides of the membrane? - answerligand-gated ion channel If there are 20 chromatids in the cell, how many centromeres are there? - answer10 Which bonds are created during the formation of the primary structure of a protein? - answerpeptide bonds Which of the following factors would tend to increase membrane fluidity? - answera greater proportion of unsaturated phospholipids Large numbers of ribosomes are present in cells that specialize in producing which of the following molecules? - answerproteins In the absence of oxygen, yeast cells can obtain energy by fermentation, resulting in the production of _______. - answerATP, CO2, and ethanol (ethyl alcohol)