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3 years ago

How does beneatha seem to have changed as a result of walter's loss of the money?

1 answer:

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Beneatha lost her faith on her youthful idealism. She always mocks Asagai’s idealistic dream for African independence. She no longer support African heritage and she thinks more about the problem of Africa is facing. She has a dream of going to medical school which may not happen anymore.

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2. Number the steps of protein synthesis 1-4 (1 being the beginning and 4 being the

Margarita [4]

Proteins synthesis includes transcription and translation. 1) DNA is unzipped and the bases are used to code for a strand of mRNA. 2) mRNA strand attaches to a ribosome. 3) tRNA carries amino acids to the ribosome. 4) Amino acids are linked by peptide bonds to create protein.

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TRANSCRIPTION

In protein synthesis, the first step is to synthesize messenger RNA, mRNA.

The transcription is the coping process of the DNA section, and it happens in the nucleus.

After that, the translation occurs when the formed mRNA moves to the cytoplasm through the nucleus membrane pores.

TRANSLATION

Once in the cytoplasm, it begins the translation process.

mRNA meets a free ribosome that is the primary structure for protein synthesis.

Ribosomes are composed of two subunits, a big one and a small one.

They also associate with different tRNA that carries amino acids.

The ribosome reads mRNA in the 5´ to 3´ direction, and, according to the codons that are being readen, tRNA transfers the correct amino acids to build the polypeptide chain.

Each tRNA has two important sites. One of them is the antidocon that couples with the codon of the mRNA molecule. The other site couples with the coded amino acid.

The new amino acid joins the growing chain through peptidic bonds between the carboxyl and amino groups.

The tRNA leaves the ribosome and is free to join another amino acid and repeat the cycle.

The protein is synthesized from the amino terminus to the carboxy terminus, while the added amino acids to the chain are coded by a codon formed by three bases in the mRNA.

The start and stop codons are used as signals of the synthesis initiation and finish. The ribosome beggins protein synthesis when reading the start codon, and when reaches the stop codon, protein synthesis is over.

According to this theoretical framework, we can order the steps.

1) DNA is unzipped and the bases are used to code for a strand of

mRNA ⇒ Transcription ⇒ Nucleus

2) mRNA strand attaches to a ribosome ⇒ Translation ⇒ Cytosol

3) tRNA carries amino acids to the ribosome and matches with the

correct codon ⇒ Translation ⇒ Cytosol

4) amino acids are linked together by peptide bonds to create protein ⇒ Translation ⇒ Cytosol.

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Related link (steps for protein synthesis) :

brainly.com/question/8539126?referrer=searchResults

brainly.com/question/14274397?referrer=searchResults

6 0

2 years ago

According to darwin, natural selection operates at the level of

Sati [7]

It operates at the level of individuals.

7 0

3 years ago

What is the potential problem for robotic rovers on Mars?

Step2247 [10]

Answer:

The limited autonomy of the robotic rovers on Mars posed a big problem.

Explanation:

Missions are very costly, and can lead the project to fail with the simplest errors. If the rover was permanently trapped on a rock or destroyed, it would have a catastrophic impact on the exploration. Thus on-board technologies would still be more traditional than what a laboratory environment has sought. The autonomous rovers will considerably increase the productivity of crew. Responsibility for their own well-being is also useful for the rovers: to prevent getting hurt, to recognize and correct recoverable hardware and software faults.

3 0

3 years ago

Which of the following is an example of a negative feedback loop? Select one: a. Uterine contractions to expel a fetus during la

PtichkaEL [24]

Answer:

Explanation:

The correct answer would be increasing heart rate to compensate for low cardiac output.

The negative feedback loop is the mechanism that is utilized in the maintenance of homeostasis. They work by opposing the processes that bring about a deviation away from setpoints, that is, the normal range of operation of physiological processes in the body.

For example, when the heart rate goes below the setpoint, the negative feedback loop swings into action through the sensor, the control center, and the effector to return the heart rate to the normal operating range.

Correct option: d

6 0

3 years ago

What could farmers do to prevent another potato famine?

DochEvi [55]

Answer:

Explanation:

they could grow their crops somewhere that there is rich soil, they could put gmo in their food, they can make sure it is the right season to grow. there is a lot of ways that a famine in general can be avoided.

4 0

3 years ago