Campylobacter jejuni is transmitted to humans by all of the following EXCEPT
A. anal-oral sexual activity.
B. insect vectors.
C. contaminated food and water.
D. infected animals.
Answer: B
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Match the scientist(s) with the statement on the right.
A) was able to solubilize and create lipid bilayers B) demonstrated transmembrane proteins C) was able to solubilize and create lipid monolayers D) described the chemical nature of the cell membrane E) demonstrated that membranes were a bilayer F) proposed the "lipid protein sandwich" model of the cell membrane G) proposed the fluid mosaic model of the cell membrane H) used electron microscopy for the basis of the proposed "unit membrane" model 1) Davson and Danielli 2) Gorter and Grendel 3) J. David Robertson 4) Irving Langmuir 5) Unwin and Henderson 6) Charles Overton 7) Singer and Nicolson
Biodiversity refers to _____
a. genetic diversity b. species diversity c. ecosystem diversity d. all of these
Cancers that metastasize and invade normal tissues to impede their functions are called
A) benign tumors. B) keratosis. C) malignant tumors. D) in situ cancer. E) neoplasm.
In the electron transport chain, exergonic redox processes drive the endergonic reaction in which:a
pyruvate is converted to acetyl CoA. b. ATP is produced by phosphorylation of ADP. c. G3P is produced from phosphorylation of ADP. d. ADP is produced by dephosphorylation of ATP. e. glucose is produced from phosphorylation of ADP.