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3 years ago

What type of molecule is represented by the model below?

Biology

2 answers:

saul85 [17]3 years ago

8 0

I think it is C Steroid :)

charle [14.2K]3 years ago

7 0

The answer to your question is Letter C <-- ANSWER

Steroid is a molecule made up of four carbon rings with other atoms bonded to those rings.

Hope this Helps

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Can the environment and the heritage be used to describe evolution?

guapka [62]

Evolution is caused by genetic mutations that become favorable for survival.

For example if a bird has a mutation that gives it a longer beak and it lives in an environment in which a longer beak lets the bird catch more food- the longer beak becomes a favorable trait.

Now the bird is able to survive “better” thus it lives longer(due to its ability to catch more food). Because of this it reproduces more and passes the trait on to its offspring.
Overtime this mutation takes over the population of birds in the area.

7 0

3 years ago

Which of the following plays the largest role in the temperature differentiation on earth and its seasons? The heat from the cor

Ksenya-84 [330]

I would say the last option, the tilt of the axis/ rotation of the earth. Sorry if this is late, it says you asked a week ago. Hope this helps

3 0

3 years ago

In part A, you analyzed genes that contribute to two diseases. How can scientists use this information to develop new treatments

Sergeeva-Olga [200]

Answer:

Yes scientist will need to develop multiple treatments to control symptoms.

Explanation:

because if they only do one treatment it may not work for everyone because some people could be allergic to that one treatment that's why there are multiple treatments.

8 0

3 years ago

From a chemical view, how is an amino acid is being recognized by its specific aminoacyl tRNA synthetase?

hammer [34]

During translation, rRNA and tRNA read mRNA in 5´ to 3´ direction. According to the codons being readen, tRNA transfers the correct amino acids to build the polypeptide chain. A codon is a short sequence of three nucleotides that store the genetic information for the aminoacids´ assembly.

Each tRNA has two important sites. One of them that couples with the codon of the mRNA molecule, named anticodon. The other site couples with an amino acid through the action of the aminoacyl-tRNA synthase enzyme. The whole complex, amino acid + enzyme + tRNA is named aminoacyl-tRNA.

Each tRNA is recognized by a specific aminoacyl-tRNA synthase enzyme. The enzyme is also capable of recognizing a specific amino acid. Let us say, for instance, that tRNA is specific for phenylalanine. The molecule is attached to the enzyme that is specific for that tRNA(Phe). Then, when the enzyme and tRNA(Phe) are together, they get to find phenylalanine. The enzyme links the aminoacid to the RNA. Once the whole complex is formed, the tRNA gets to pair its anticodon with the mRNA codon. This is,

Recognition of enzyme and the specific tRNA(aa) ⇒ aa being aminoacid
Recognition of enzyme and the specific aminoacid
Linkage of the aminoacid to RNA by the enzyme action
Pairing of tRNA anticodon to mRNA codon.

Considering that there are twenty amino acids available, there are also twenty complexes of aminoacyl-tRNA, one for each amino acid. Each of the mRNA codons represents one of the 20 amino acids used to build the protein. Each amino acid can be codified by more than one codon. Of the total 64 codons, 61 codify amino acids, and one is a start codon. The left three codons are stopping translation points.

tRNA decodes genetic information from the nucleotidic sequence in the mRNA molecule and allows amino acids to align composing the new protein.

Once the new peptidic link joins, placing together the new amino acid to the growing peptidic chain, the binding between the amino acid and the tRNA molecule breaks. The tRNA is now free to join another amino acid and repeat the cycle.

In conclusion, a specific aminoacyl-tRNA synthase enzyme recognizes a tRNA, which is also specific for a certain amino acid. When together, the enzyme recognizes the amino acid and links it to the RNA. The whole complex is known as aminoacyl-tRNA. Once the tRNA is joined to its amino acid, it gets to pair a codon of mRNA to add that amino acid to the new synthesizing protein.

6 0

3 years ago

Which pituitary hormone causes liver cells to release somatomedins that increase the rate of uptake of amino acids by cells such

Goryan [66]

Question: Which pituitary hormone causes liver cells to release somatomedins that increase the rate of uptake of amino acids by cells such as skeletal muscle fibers?

follicle-stimulating hormone

prolactin

thyroid-stimulating hormone

growth hormone

Answer:

growth hormone

Explanation:

Somatomedins are growth factors. The growth hormone makes the cells such as liver cells, skeletal muscles, bones, etc. to secrete the somatomedins. The somatomedins from the liver enter the bloodstream to reach the target cells. The somatomedins make the skeletal muscles, bones, etc. to absorb amino acids into the cells so as to facilitate protein synthesis. This growth factor also downregulates the breakdown of proteins. This is how growth hormone triggers the growth of muscles and soft tissues.

5 0

3 years ago