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Virty [35]
3 years ago
14

Which portion of the electrocardiogram represents the time during which the ventricles are in systole?

Biology
1 answer:
belka [17]3 years ago
8 0
The Q-T interval in the electrocardiogram represents the time during which the ventricles are in systole. It is the time period between ventricular depolarization and ventricular repolarization, that occurs during ventricular systole. Normal QT varies from 0.36 o 0.44 seconds, depending on age and gender. 
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After this one there's one more, Good luck! ​
kicyunya [14]

Answer:

-Your lungs are part of the respiratory system, a group of organs and tissues that work together to help you breathe. The respiratory system's main job is to move fresh air into your body while removing waste gases.

- When you inhale, air enters your lungs and oxygen from the air moves from your lungs to your blood. At the same time, carbon dioxide, a waste gas, moves from your blood to the lungs and is exhaled.

-The circulatory system delivers oxygen and nutrients to cells and takes away wastes.

-The heart is divided into four chambers consisting of two atria and two ventricles, the atria receive blood, while the ventricles pump blood. The right atrium receives blood from the superior and inferior vena cavas and the coronary sinus, blood then moves to the right ventricle where it is pumped to the lungs.

-Systemic circulation carries oxygenated blood from the left ventricle, through the arteries, to the capillaries in the tissues of the body. From the tissue capillaries, the deoxygenated blood returns through a system of veins to the right atrium of the heart.

- Your blood is made up of liquid and solids. The liquid part, called plasma, is made of water, salts, and protein. Over half your  blood is plasma. The solid part of your blood contains red blood cells, white blood cells, and platelets.

:) hopefully this helps lol

Explanation:

6 0
3 years ago
A. Cellular Respiration – what type of reaction? ….and how much energy?
Elina [12.6K]

Answer

:a. Cellular Respiration – what type of reaction?  EXERGONIC .and how much energy  34 ATPs;Net gain of 32.

b. Why doesn’t sugar just explode on our countertops- sugar is a high energy-rich compound. Therefore high energy is needed to breakdown the bond-energy  in it for phosphorylation to take place in glycolysis  

c.<u> Photosynthesis – what type of reaction-</u>ENDOGONIC  ….how much energy 18 ATPs used up and 12NADPHs  

d.Where does the activation energy come from for photosynthesis SUNLIGHT

e. <u>Day to day, we use</u> ATPS <u> it is our energy coinage, we c</u>an STORE it and then cash it in.  

f. What is the delta G value for breaking ATP down into ADP=−30.5 kJ/mol

Explanation:

5 0
3 years ago
A scientist wants to test how much of an acid can be added to a solution
notsponge [240]

Answer:

<em>B. Methyl yellow, which changes from yellow to red around a pH of </em>

<em>4.0</em>

Explanation:

A pH indicator is a technique by which the pH of a solution can be known. The scenario in the question describes that the scientist wants to determine a pH after it gets converted from 6 to below 4. For this recognition, the scientist should use a methyl yellow indicator which will change from yellow to red once a pH around 4 is achieved.

8 0
4 years ago
What is the type of chemical weathering caused by oxygen in the atmosphere called
Zinaida [17]

Answer:

Oxidation

Explanation:

Oxidation. Oxygen causes oxidation. You can think about oxidation like rust on a car. Rust forms when the iron or steel in your car reacts with the oxygen in the air to form iron oxide.

5 0
3 years ago
help pleaseeeeeeeeeeee ( use your own words if you can ) What is the difference between prokaryotic and eukaryotic cells?
Zanzabum
An eukaryotic cell has a nucleus while the prokaryotic cell doesn’t.
4 0
3 years ago
Read 2 more answers
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