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fiasKO [112]
3 years ago
7

You will measure and compare the heart rates of ten learners before and after

Biology
1 answer:
rewona [7]3 years ago
8 0

Answer:

Exercise is responsible for the increasing heart beat.

Explanation:

Exercise is responsible for the increasing heart beat because our body needs oxygen more faster during exercise. When we exercise our body needs quick energy and oxygen which can be provided by heart as well as the heart also removes carbondioxide which is produces during respiration process so the heart beat increases in order to provide energy and oxygen to the muscles.

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Vitamin B12 is important for the body to function. It helps keep nerve cells healthy, and it helps with the formation of red blo
Ugo [173]

Answer:

B12 (cobalamin): Perhaps the most well-known of all the B vitamins, B12 is vital for neurological function, DNA production and red blood cell development. B12 is found naturally in animal sources like meats, eggs, seafood and dairy.

7 0
3 years ago
From what kind of cross a mule is produced?​
insens350 [35]

Answer:

Mule is produced from a hybrid cross.

Explanation:

A mule is the offspring which is produced by crossing or mating of male donkey with female horse.

Where the male donkey is called Jack and female horse is called mare.

The offspring produced as a result is Mule.

The gender of Mules may be male or female but consists of 63 chromosomes.

But such produced Mules are sterile.

4 0
2 years ago
Lipids have an important role in storing energy reserves. What is another primary function of lipids?
azamat

Answer: Unlike other body cells that can store fat in limited supplies, fat cells are specialized for fat storage and are able to expand almost indefinitely in size.

The functions of lipids include storing energy, signaling, and acting as structural components of cell membranes.

7 0
2 years ago
Read 2 more answers
According to the July 1985 New York Times article, what is to blame for the decline in the clamming industry?
serg [7]

Answer:

"Overfishing and pollution have been blamed for the clam shortage, and scientists believe the harvest must be limited before the stock becomes exhausted."

Explanation:

Hope this helps C:

~Chiena

7 0
1 year ago
Large changes in temperature and acidity interfere with enzyme activity by _
ankoles [38]

Answer: Denaturing

Explanation: Enzymes are made of amino acids that are linked by bonds, amongst those bonds are hydrogen bonds that are very weak. High temperatures and low pH(acidity) breaks those bonds changing the molecular conformation of the enzymes. That way they denature and loss the ability to perform their functions. High temperatures and acidity alter the structure of their active site preventing the substrate from binding to them. While high temperatures denatures enzymes, low temperature renders them inactive.

7 0
3 years ago
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