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FinnZ [79.3K]
2 years ago
15

What signals your body to breathe out, or exhale. We learning about the respiratory system

Biology
1 answer:
Gre4nikov [31]2 years ago
3 0

Answer: Your brain constantly gets signals from your body which detect the amount of oxygen and carbon dioxide in your blood. Your brain will send signals to the muscles involved in breathing and adjust your breathing rate depending on how active you are.

HOPE THIS HELPED HAVE A WONDERFULL DAY!

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What makes a variation different from an adaptation? Use an example to explain.
Talja [164]

Answer:

A variation is different to an adaptation as a variation is a difference or variety inside a species, for example a different breed of dog such as a spaniel is a variety of the dog species, whereas an adaptation is a genetic mutation that has developed in order to help an animal survive, such as giraffes having a long neck. Adaptations continue throughout the species due to natural selection.

7 0
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Which mutated protein causes the symptoms of sickle cell disease?
Alika [10]

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6 0
2 years ago
Which type of lens can be rotated to select different magnifications?
stich3 [128]

Answer:

objective lenses

Explanation:

objective lenses with different magnifications, screwed into a circular "nosepiece" which may be rotated to select the required lens.

4 0
3 years ago
Consider the following sentence: "The dog did not eat." Which of the following variations of this sentence is most like a frames
nasty-shy [4]

The answer is D. . . . . . . . . .

4 0
3 years ago
How would you make 2.5 liters of an aqueous solution containing 150mM Tris (the MW of Tris is 120g/mole)? (Hint: Do the necessar
lisabon 2012 [21]

Answer:

45 g of the solid Tris will be dissolved in 2.5 liters of water.

Explanation:

Recall that:

<em>Number of moles  = molarity x volume</em>

Hence, number of moles of Tris present in 2.5 liters, 150 mM solution:

= 150/1000 x 2.5 = 0.375 moles

Also, recall that:

<em>No of moles of substance = mass/molar mass.</em>

Hence, mass of 0.375 moles substance:

= no of moles of the substance x molar mass of the substance.

= 0.375 x 120 = 45 g.

Therefore, in order to prepare 2.5 liters, 150 mM of an aqueous solution of Tris, 45 g of the solid Tris will be dissolved in 2.5 liters of water.

6 0
3 years ago
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