The antibiotic trimethoprim works by inhibiting the synthesis of dtmp by inhibiting an enzyme that produces tetrahydrofolate, a molecule that is used by the enzyme thymidylate synthetase (thya) to donate a methyl group to dump during dtmp synthesis. indicate if the following statement is true or false. bacteria that cannot produce thymidine may also be resistant to trimethoprim.
a. true
b. false

Works together in the synthesis, modification, packaging, and transport of lipids and proteins

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.

Which of the following statements accurately defines epidermis? a. a thick protein fiber composed of the protein collagen b. hard, dense bone tissue found on the outer surface of a bone c. single layer of epithelial cells and the underlying basal lamina d. outer, protective layer of the skin composed of stratified squamous keratinized epithelial tissue