Which functional group forms bridges to help stabilize a protein’s quaternary structure?
a. amino
b. carbonyl
c. hydroxyl
d. phosphate
e. sulfhydryl
e
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When the H+ concentration is significantly higher in the mitochondrial matrix than the intermembrane space, ATP
synthase would ____.
a. require an ion to stabilize it b. no longer function properly c. hydrolyze ATP to form ADP to pump protons out of the matrix d. generate ATP to pump protons into the matrix e. be uncoupled from the electron transport chain
Recent studies have shown that cells of the dorsal lip of the blastopore contain active ________ genes that code for proteins that are able to induce the development of other cells
Fill in the blank(s) with correct word
Bacteria such as E. coli and Salmonella produce invasins that bind host cells, thus causing the cells to
A) release TNF. B) produce iron-binding proteins. C) engulf the bacteria. D) destroy the bacteria. E) release cytokines.
About 99 percent of the UV radiation that the sun showers on Earth is blocked by:
A) the magnetic fields that surround the Earth. B) stratospheric ozone. C) ground level ozone. D) stratospheric greenhouse gases, such as CO2 and water. E) tropospheric greenhouse gases, such as CO2 and water.