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shepuryov [24]
4 years ago
11

Scientists measured the population of lions and zebras in sub-Saharan Africa over a 6-year period. They wanted to measure the ch

ange in population between a predator and prey over a period of time. In what year were the lion and zebra populations both at their highest?
Biology
1 answer:
lisabon 2012 [21]4 years ago
4 0
Hey friend!
You stuck?

2009 is the year that the population of zebras and lions is the highest

Hope this helps!
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The lac operon can be regulated by two distinct methods. Which of the following statements are correct?The lac operon can be act
Ad libitum [116K]

Answer:

  • The lac operon can be activated by the binding of allolactose to the repressor protein, releasing it from DNA and thereby allowing for transcription to occur.
  • In response to low glucose levels, cAMP is upregulated; the binding of cAMP to the cAMP receptor protein triggers the activation of the operon.

Explanation:

Lactose operon or lac operon  (includes lacZ, lacY and lacA genes) is found in some bacteria and the products of its genes are involved in lactose metabolism. So, this operon is active (genes are transcribed) when lactose is present and glucose is absent (or at low level). The operon is regulated by the lac repressor which acts as a lactose sensor and catabolite activator protein (CAP) which acts as a glucose sensor.

When there is lactose (in the form of allolactose) lac repressor detects it and stops being repressor. This enables transcription.

CAP detects glucose (via cAMP) and activates transcription when glucose levels are low.

5 0
3 years ago
A state in the United States wanted some funds for protecting its wildlife. However, the Wildlife Conservation and Restoration P
Rom4ik [11]

Answer:

The correct option is C.

Explanation:

The Wildlife Conservation and Restoration Program and Wildlife Grant Program are two governmental programs that work toward ensuring that wildlife resources are conserved and protected from destruction. These program typically give funds to qualified states to take care of their wildlife resources. To be qualifies for the grant, applicants must be able to present feasible Wildlife Action Plan that spell out how the grant will be utilized. Such plans usually serve as blueprints that showcase the works that need to be done and how it will be executed. Any state that is not able to present a convincing Wildlife Action Plan may end up not getting the grants.  

6 0
3 years ago
Read 2 more answers
The BEST possible way to test the paternity of a child would be to
GaryK [48]
The answer is D because we already know who the mother is so itll be left to get DNA from the child and the possible father
5 0
3 years ago
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To help sort out those bacteria that have the vgp gene, scientists first attempt to grow the bacteria both in a medium with ampi
ella [17]
Bacteria with no plasmid will ONLY grow in medium without ampicillin. This is because bacteria without any plasmid do not have the gene for ampicillin resistance (ampR). Therefore they can only survive and grow in medium without ampicillin.
Bacteria with nonrecombinant plasmid will grow in both media.According to the image, this type of bacteria has the gene for ampicillin resistance (ampR) in their plasmid. Therefore, they are not affected by the presence of ampicillin in their environment and they can grow in both media.
Bacteria with recombinant plasmid but no vgp gene will grow in both media. These bacteria also have the gene for ampicillin resistance in their plasmid, therefore they can survive and grow in both media.
Bacteria with recombinant plasmid with vgp gene will grow in both media. These bacteria, apart from having the vgp gene in their plasmid, they also have the gene for ampicillin resistance. The vgp gene does not affect the expression of the ampR gene, therefore these bacteria are also ampicillin resistant. 
7 0
4 years ago
Which statement describes the reaction for cellular respiration?
Angelina_Jolie [31]
It’s carbon dioxide + water > glucose + oxygen + water and energy produced in the form of ATP
5 0
3 years ago
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