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Natalka [10]
4 years ago
7

Can someone please help me out with this multiple choice question?

Biology
2 answers:
grigory [225]4 years ago
8 0
The answer is D. The gases that were present in the atmosphere of early earth
Elodia [21]4 years ago
5 0
Answer is D
hands down

brilliant experiment btw
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Receptors are needed for which type(s) of cell signaling?
Mice21 [21]

Receptors are needed for both Short and Long range  cell signaling.

<h3>What are receptors?</h3>

In the cell, there are some special proteins who play the role of receiving external signals. These are what we call receptors.

These receptors could function for both long and short range cell signaling. Hence, Receptors are needed for both Short and Long range  cell signaling.

Learn more about cell signaling:brainly.com/question/14412293

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7 0
2 years ago
These disorders consist of serious, persistent problems that involve relationships, aggression, depression, and fears associated
mylen [45]

Answer:

C. Emotional and behavioral disorders

Explanation:

Emotional and behavioral disorders are often difficult to define, but it is defined as :

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  • A tendency to develop physical symptoms related to fears associated with personal or school problems.

Hence , according to the scenario mentioned in the question, answer is C. Emotional and behavioral disorders.

8 0
4 years ago
What is a visual model used to measure the average amount of dietary intake of a black bear.
musickatia [10]

Answer:

Shaggy black fur and large size distinguish this animal from all other Adirondack mammals. The black bear has a short, inconspicuous tail. The body and legs are short. The head is broad with erect, rounded ears. The muzzle, grizzled with brown, is long and narrow. The eyes are small and dark. Both front and hind feet have five toes, each with a large claw. A white blaze is often present on the throat or chest. Color phases occur but are uncommon in eastern populations. Adults are approximately 50 -78 inches in length. Average-sized adult males weigh 300 lbs. and females 150 lbs.

Explanation:

4 0
3 years ago
The double helix structure of DNA
dangina [55]

Answer:

The double-helix structure of DNA: <u><em> Watson, Crick, Franklin </em></u>

The chemical composition of proteins: <u><em>Mulder   </em></u>

The monomer of nucleic acids:<u><em> Levene</em></u>  

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3 years ago
Where does carbon dioxide fixation occur in a plant cell
GenaCL600 [577]
The Calvin Cycle, of which carbon fixation is the first step also occurs as part of the LIR and takes place in the stroma.
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3 years ago
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