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Dmitriy789 [7]
3 years ago
14

Any one free?For talk any indian gìrl​

Biology
1 answer:
kykrilka [37]3 years ago
8 0

Answer:

no pe i aint indian

Explanation:

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Two important checkpoints that regulate the cell's progression through the cell cycle occur in the _____ and _____ phases of the
sineoko [7]

Answer:

G1 and G2

Please Mark Brainliest If This Helped!

4 0
2 years ago
You are doing an experiment in which you are using an in vitro translation system derived from rabbit reticulocytes, called a ra
Nadya [2.5K]

Answer:

Problems with transfection efficiency or absence of essential mRNA modifications (capping and poly-A tail)

Explanation:

Translation is the process of protein synthesis from RNA in which the genetic information encoded in a messenger RNA (mRNA) molecule is translated into a protein sequence composed of amino acids. Translation has three steps: initiation, elongation, and termination. During translation, different elements are required to initiate, continue and complete the process, which include essential molecules such as amino acids, mRNA, tRNAs, ribosomes, energy-carrying molecules (i.e., ATP, GTP), initiation factors (i.e., eIF1A, eIF3, etc) and elongation factors (eEF-2, EIF5A). For example, humans can't synthesize nine essential amino acids (i.e., threonine, tryptophan, phenylalanine, valine, methionine, leucine, histidine, isoleucine, lysine), thereby it is imperative to include these amino acids to synthesize proteins composed of them. On the other hand, it is also fundamental to take into account that the efficiency of transfection of the molecules required during translation, as well as the absence of modifications in the mature mRNA sequence, may alter the process in vitro.

3 0
3 years ago
Autonomic regulation of heart rate is via two reflex centers found in the pons. True or False
prisoha [69]

Answer:

Autonomic regulation of heart is via two reflex centers that are found in medulla oblongata

Explanation:

Medulla oblongata contain long stem that makes the upper part of brain case and this is a cone shaped structure which is responsible for autonomic regulation like controlling heart rate,vomiting,respiration,breathing etc.

The heart rate is controlled by autonomic nervous system that are mainly sympathetic and parasympathetic nervous system that releases hormones like catecholamine (epinephrine and non epinephrine) which helps in controlling the heart rate.

Medulla oblongata mainly connects the brain with the spinal cord that are responsible for responsible for the autonomic functions which contain -

Controlling the ventilation via signalling system regulated by chemo receptors  which detects change in acidity of the blood.

Acts on cardiovascular centers.

Controlling the reflex centers like vomiting,coughing,sneezing,swallowing etc.

4 0
3 years ago
Most living organisms use oxygen to make ATP from glucose.<br><br><br> True<br> False
aliina [53]
False
Most living things use glucose to make ATP from oxygen
5 0
3 years ago
In which plant cell is there single number of chloroplast​
Firlakuza [10]

Answer:

The number of chloroplasts per cell varies from one, in unicellular algae, up to 100 in plants like Arabidopsis and wheat.

7 0
3 years ago
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