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crimeas [40]
3 years ago
15

Normal cardiac rhythm is determined by which of the following?

Biology
1 answer:
Georgia [21]3 years ago
4 0
<h2>-Hello There-</h2><h2 /><h2>The answer to your question "Normal cardiac rhythm is determined by which of the following?" is "SINOATRIAL NODE"</h2><h2 />
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Scientists studying transcription in yeast (Saccharomyces cerevisiae) created an experimental strain that
Ray Of Light [21]

Answer:

Explanation:

Hello!

The scientist created an experimental strain that produces a modified RNA polymerase with a single amino acid substitution. This mutation is supposed to change the elongation rate of the mRNA during transcription.

The dependent or response variable, is the one the researchers are interested in, meaning, are the characteristics that the researcher will pay attention to and measure during the experiment.

In this example, the researcher is interested in testing the max elongation rate during transcription, which is the dependent variable of this experiment.

In the second part of the experiment, both strains of yeast, wilds, and experimental, where exposed to 40ug/mL solution of amanitin and recorded the maximum elongation rate of the RNA. This is naturally to test the effects of amanitin over the elongation rate of the mRNA in both strains.

The control group is a set of experimental units that are exposed to the same conditions as the experimental groups, with the exception that they receive no treatment (or they receive a "no effective" treatment often called a placebo). The purpose of a control group is to know the natural response of the experimental units to a treatment-free environment, this way when comparing both groups, the researcher will be able to observe the differences or changes due to the applied treatments.

In the second experiment, there are missing two control groups, one made of the wild strain and the other made of the experimental strain, exposed to the same conditions as the treated strains.

I hope this helps!

8 0
3 years ago
What happens to the number of particles in the sample
Verdich [7]
These question makes no sense

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3 0
2 years ago
What is pyrenoid?<br><br>good morning ​
Mariana [72]

Answer:

The pyrenoid, a dense structure inside or beside chloroplasts of certain algae, consists largely of ribulose biphosphate carboxylase, one of the enzymes necessary in photosynthesis for carbon fixation and thus sugar formation. Starch, a storage form of glucose, is often found around pyrenoids.

4 0
3 years ago
How does the body’s response to endocrine regulation differ from its response to nervous regulation?
Mamont248 [21]

Answer:

.

Explanation:

Endocrine system uses chemical signaling (slow)

Nervous system uses electrical signaling (fasr)

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3 years ago
What happens to the actual image you see between the time you see it and it your brain registers it?
USPshnik [31]

Answer AND Explanation:

As light reflected from an external object enters the eye, it is refracted by the cornea, aqueous humour, the lens and vitreous humour so that an image is focused on the retina. The image is real, upside down and smaller than the object. The photoreceptor cells are stimulated by the reflected light and impulses are set off. The impulses are transmitted by neurons through the optic nerve to the optic region of the brain. The brain interprets the impulse as an upright impression of the object.

3 0
3 years ago
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