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kolezko [41]
3 years ago
11

Explain the difference between positive and negative control over transcription. drag the appropriate items to their respective

bins.
Biology
1 answer:
hammer [34]3 years ago
8 0
The type of control is described by the response of the operon when no regulatory protein is extant. In the case of negative regulator, the genes in the operon are distinct unless they are switched off by a repressor protein. Therefore the operon will be turned on essential (the genes will be prcise) when the repressor in inactived. In the case of positive control, the genes are distinct only when an active regulator protein, an activator, is present, Thus the operon will be turned off when the positive regulatory protein is missing or inactivated.
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Select all that apply. Which of the following are part of the Protista kingdom? protozoa bacteria plants fungi algae
madreJ [45]

The correct answer is Protozoa, plant and fungi.

The kingdom Protista consits of several organism that includes Protozoa, plants and fungi. Protists are the first eukaryotes that came on earth, it includes multicellular organisms and unicellular organisms as well.

  • It includes plant like protists called as autotrophs.

Example: Red, brown and green algae.

  • It also includes fungi like protists called as decomposers.

example: slime molds and water molds.

  • It also includes protozoans like Zooflagellates and cilliates.

8 0
3 years ago
Read 2 more answers
Plzzz help with the one with the membrane picture
3241004551 [841]

Answer:

1.) The solute molecules will not move between the two sides because the membrane does not have large enough spaces for the molecules to move through. The water molecules will move to the right side because water moves to places of a higher solute concentration.

2.) The right side represents high concentration because it contains the majority of the solute molecules.

3.) The left side represents low concentration because it contains a small amount of solute molecules compared to the right side.

7 0
2 years ago
Reptiles are better suited to dry land than their amphibian ancestors because
Vaselesa [24]

Answer:

<u><em>All of the above.</em></u>

Explanation:

1. Their watertight skin minimizes moistures loss: <em>Reptiles have a reputation that they are “slimy” when we touch and hold them; however, they have dry skin, which has even fewer glands than mammals or amphibians. The main special feature of their skin is that the epidermis is heavily keratinized with a layer, which also prevents water loss.</em>

2. Amphibians must lay eggs in water or in moist soil to reduce moisture loss: <em>Because amphibian eggs don't have an amnion, the eggs would dry out if they were laid on the land, so amphibians lay their eggs in water.</em>

3. Reptile egg shells are harder than amphibians' eggs: <em>Reptile eggs are coated with a leathery or brittle coating, and the animals that hatch from them are miniature versions of the full-sized animal parent. In contrast, amphibian eggs are transparent and jelly-like. The animals that hatch from them still must go through metamorphosis.</em>

<u><em>Hope this helps you have a better understanding:) !!</em></u>

7 0
2 years ago
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Sauron [17]
2. detritivores are decomposes because they consume other material to break it down.
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4. the first box is mutualism. second box is commensalism. third box is parasitism.
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2 years ago
How many calories can i eat without gaining weight?
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I think that a<span>n average woman needs to eat about 2000 calories per day to maintain, and 1500 calories to lose one pound of weight per week. An average man needs 2500 calories to maintain, and 2000 to lose one pound of weight per week</span>
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