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Igoryamba
2 years ago
12

In 1990, Carl Woese introduced the three

Biology
2 answers:
Naddika [18.5K]2 years ago
6 0

Answer:

D

Explanation:

dedylja [7]2 years ago
6 0

Answer:

D. Some organisms, which were previously characterized together, were determined to be genetically very different.

Explanation:

Domains are the highest taxons within the biological classification of living beings. Like other taxons, domains are used to group living beings in a scientifically based classification.

They were added to the classification system after the other taxons were already established. The presence of domains was necessary to group individuals in relation to evolutionary factors. This was necessary because some organisms, previously characterized together, were determined to be genetically very different.

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The weather is warm and dry. What changes would a cold front bring?
Ksenya-84 [330]

rain or thunderstorms

typically thunderclouds and storms are the post affect of a cold front, causing D to be your answer, MrKnowledge

8 0
2 years ago
Read 2 more answers
Which statement best contrasts animals with other living things?
EastWind [94]
<h2>Animals</h2>

Explanation:

A. Animals have muscle tissue, whereas other living things do not.

The character that contrasts animals with other living organism is the presence of muscle tissue. Muscle tissue is exclusively found in animals and are not found in any other kingdom of the living world.

Animals and many other living things posses multiple cells. Most of the cells in organisms are with nucleus.Most of the multicellular organisms have tissue level organization of the body.

3 0
3 years ago
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
2 years ago
Explain how heat is loss underwater. <br><br>Make explanation as short as possible. ​
Sphinxa [80]

Answer:

Any time a body is in an environment that is colder than 98.6 F (37 C), heat is lost. And since the heat loss in water is 25 times faster than to air, this may occur fairly quickly.

Explanation:

hope it helps?

8 0
2 years ago
Please help asap with 18
elixir [45]
The answer is going to be C
6 0
3 years ago
Read 2 more answers
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