What’s the role of biotin in fatty acid synthesis (you may choose more than one answer) A. A nucleophile that directly attack carbon dioxide B. A base that deprotonates acetyl CoA C. A temporary carrier of carbon dioxide

The most direct method of phosphorylation is ________ phosphorylation.   a. substrate-level   b. oxidative   c. reductive

Ammonia is assimilated by the creation of: explain why you choice the answer  a.glutamine b. cysteine c. asparagine d. leucine

What substance joins proteoglycans together into gigantic complexes called proteoglycan aggregates? These complexes can occupy very large volumes. a. hyaluronidase b. hyaluronic acid c. proteoglycase d. fibronectin e. laminin

The Calve cyde begins when CO2 reacts with A GOP B Ribulosne baphosphate (RuBP) C Oxaloacetate D. Phosphoenolpyruvate E Dihydroxyacetone phosphate

enzymes which are produced in inactive form in the living cells are called a. coenzymes b. papain c. lysozymes d. apoenzymes e. proenzymes

The complete catabolism of one molecule of C6H12O6 into carbon dioxide and water produces a larger amount of ATP in aerobic prokaryotes than it does in aerobic eukaryotes because aerobic prokaryotes:   A. always produce ethanol rather than lactic acid as a byproduct B. generate more molecules of NADH during aerobic respiration C. have no transport costs to get NADH into mitochondria D. generate more molecules of FADH2 during aerobic respiration E. are able to use pyruvate as a substrate for fermentation

A common starvation or generalized stress signal produced and sometimes secreted by bacterial, protistan, or fungal cells is   a. CAP b. cyclic ATP c. cyclic GTP d. cyclic AMP e. cyclic ADP f. glucose g. Lactic acid h. Ethanol or CO2

State the characteristics of a biological community.

most organisms use D-glucose as a primary metabolic fuel. predict what would happen if only L-glucose is available.