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xenn [34]
3 years ago
15

What does the term acid mean?

Biology
1 answer:
labwork [276]3 years ago
4 0

Answer:

a substance that has a ph level less than 7

Explanation:

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Bubbles are a sign that the yeast is alive, and that it is performing anaerobic respiration. You should notice that the mixtures with too little and too much sugar do not grow, bubble or foam properly. This is because the yeast needs the perfect amount in order to produce carbon dioxide.

Explanation:

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3 years ago
Isovolumetric relaxation and ventricular filling (two phases of the cardiac cycle) take place during __________. Isovolumetric r
Helga [31]

Answer:

Option B, ventricular diastole

Explanation:

Ventricular diastole also termed as ventricular relaxation consists of two phases. In the first phase, the following set of events takes place –  

a) Relaxation of ventricle muscles

b) Reduction in pressure  of blood within the ventricles

c) As this reduced blood pressure gets lower than that of pressure with in the pulmonary trunk and aorta, blood starts flowing back towards the heart.

d) A small dip in the blood pressure is observed at this stage

e) Volume at this stage remains constant as the atrioventricular valves remain closed

f) This phase is known as isovolumic ventricular relaxation phase

In the second phase, the following set of events takes place –

a) Relaxation of ventricular muscle  

b) Dropping of pressure of the  blood within the ventricles lower than that of pressure of blood in the atria

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d) Both the heart chambers chambers are in diastole,  

e) Atrioventricular valves are open

f) Semilunar valves remain closed  

Hence, option B is correct

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3 years ago
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