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eimsori [14]
1 year ago
6

A mass extinction is technically defined as an event were at least ____% of all genera (families of organisms) goes extinct.

Biology
1 answer:
Alecsey [184]1 year ago
3 0
75% species go extinct to be considered a mass extinction
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Tell me everything about cells
MrRa [10]

Answer:

everything about cells

Explanation:

you told me to tell you that, and this answer is reasonable

but if you want you can write everything about cells on your test or homework and say you were too tired, sleepy, exhausted, and utterly brainwrecked.

5 0
3 years ago
When glucose is present, enzyme IIAglc is __________ and LacY is __________. a. phosphorylated; inhibited b. not phosphorylated;
olga_2 [115]

Answer:

Option B, not phosphorylated; inhibited

Explanation:

Glucose 6 acts as a catobolite repressant . A catobolite repressant which is usually a carbon compound inhibits the operon transcription. In the presence of glucose -6, unphosphorylated enzyme IIAGlc  inhibits the transportation system and hence prevents the utilization of lactose. Glucose‐6‐phosphate and other non‐PTS carbon causes inducer exclusion thereby leading to dephosphorylation of enzyme IIAGl without getting transported.

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5 0
2 years ago
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castortr0y [4]

Answer:

semi-conservative

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20 percent available at the highest tropic level. There is less at the top of the food chain because it has ate things from possibly all areas of the food chain and each level is consuming from lower parts of the chain than it. So with the entire food chain eating on what the top eats there is gonna be less for the top
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How do you know any reaction has reached chemical equilibrium
Aleksandr [31]

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3 years ago
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