Shown below is a hypothetical reaction pathway where both E and H can be produced from compound A. Imagine that both compounds E and H are useful to cells, ЕЗ E4 C D E E2 E1 compound H is toxic above a certain concentration. The best way to benefit the cells is for: A G H E6 E5 O H to allosterically inhibit enzyme ES above the threshold concentration O E to allosterically activate enzyme E2 above the threshold concentration O E to allosterically inhibit enzyme E5 above the threshold concentration OH to allosterically activate enzyme E2 above the threshold concentration

Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
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The first question 7
Shown below is a hypothetical reaction pathway where both E and H can be produced from compound A. Imagine that both compounds E and H are useful to cells, but
ЕЗ
E4
C D E
E2
compound H is toxic above a certain concentration. The best way to benefit the cells is for:
E1
В
E5
E6
E7
O H to allosterically inhibit enzyme ES above the threshold concentration
O E to allosterically activate enzyme E2 above the threshold concentration
O E to allosterically inhibit enzyme ES above the threshold concentration
O H to allosterically activate enzyme E2 above the threshold concentration
QUESTION 8
Which of the following observations constitutes evidence that mitochondria evolved before chloroplasts?
O Mitochondria are aerobic. Chloroplasts are photosynthetic.
O Aerobic bacteria evolved before photosynthetic bacteria (cyanobacteria).
O Some protists have separately evolved their own plastids (chloroplast-like structures) through endosymbiosis of cyanobacteria, or even through endosymbiosis of
photosynthetic protists.
O All Eukaryotes have mitochondria; only a subset of Eukaryotes have chloroplasts.
2.
QUESTION 9
Imagine that you are working in a pharmaceutical lab testing the effects of novel compounds on immune cells called macrophages. You discover one that causes an
Increase in the size and extension of the pseudopods that initiate amoeboid cell movement. This compound most likely:
O Inhibits tubulin's catalytic activity
O Increases actin's catalytic activity
O Increases tubulin's catalytic activity
O Inhibits actin's catalytic activity
P Type here to search
Home
F9
End
F10
PgUp
PgDn
F12
PrtScn
11
Transcribed Image Text:Shown below is a hypothetical reaction pathway where both E and H can be produced from compound A. Imagine that both compounds E and H are useful to cells, but ЕЗ E4 C D E E2 compound H is toxic above a certain concentration. The best way to benefit the cells is for: E1 В E5 E6 E7 O H to allosterically inhibit enzyme ES above the threshold concentration O E to allosterically activate enzyme E2 above the threshold concentration O E to allosterically inhibit enzyme ES above the threshold concentration O H to allosterically activate enzyme E2 above the threshold concentration QUESTION 8 Which of the following observations constitutes evidence that mitochondria evolved before chloroplasts? O Mitochondria are aerobic. Chloroplasts are photosynthetic. O Aerobic bacteria evolved before photosynthetic bacteria (cyanobacteria). O Some protists have separately evolved their own plastids (chloroplast-like structures) through endosymbiosis of cyanobacteria, or even through endosymbiosis of photosynthetic protists. O All Eukaryotes have mitochondria; only a subset of Eukaryotes have chloroplasts. 2. QUESTION 9 Imagine that you are working in a pharmaceutical lab testing the effects of novel compounds on immune cells called macrophages. You discover one that causes an Increase in the size and extension of the pseudopods that initiate amoeboid cell movement. This compound most likely: O Inhibits tubulin's catalytic activity O Increases actin's catalytic activity O Increases tubulin's catalytic activity O Inhibits actin's catalytic activity P Type here to search Home F9 End F10 PgUp PgDn F12 PrtScn 11
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