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dangina [55]
3 years ago
11

which statement is true about the relationship between the substrate and the active site of an enzyme

Biology
1 answer:
andrey2020 [161]3 years ago
7 0
The substrate is the part that sticks into the active site of an enzyme.
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What type of chemical bond is found between the
Lisa [10]

Answer:

Explanation: The sugar and phosphate group make up the backbone of the DNA double helix, while the bases are located in the middle. A chemical bond between the phosphate group of one nucleotide and the sugar of a neighboring nucleotide holds the backbone together.

7 0
2 years ago
Human populations in low-UV environments tend to have more lightly pigmented skin. One explanation is that the selective pressur
nikdorinn [45]

Answer:

Lightly pigmented people tend to be at higher risk of vitamin D deficiency

Explanation:

BACKGROUND KNOWLEDGE:

Human skin is the largest organ of the body which makes boundary line between environment and internal conditions.  Human skin cell produces pigment called melanin when ever it is subjected to Sun. More the melanin pigment produced more will be the skin darkens. Ultraviolet (UV) radiations also come from Sun and responsible for more pigmentation.

ANSWER EXPLANATION:

According to the question darkly pigmentation only occurs when their is high level of UV radiations. High level of UV radiations are also responsible for Vitamin D production.

People with lightly pigmented means that there environment has low level of UV radiations which are the requirement of Vitamin D production. Hence due to low UV radiations peoples with light pigmentation's are also be at higher risk of vitamin D deficiency

7 0
3 years ago
hey help if you know this please, it doesn't have lines indicating to where so I'm confused, also need help with number 7 please
Olegator [25]

Answer:

6.

The attached image contains the correct labels.

7.

a. 1

b. 6

c. 3

d. 10

e. 8

f. 4

g. 2

h. 7

i. 9

j. 5

Explanation:

7.

The entire cardiac cycle is as follows:

  1. Deoxygenated blood enters the right ventricle from the superior and inferior vena cava.
  2. The right atrium pumps the deoxygenated blood to the right ventricle.
  3. From the right ventricle, the deoxygenated blood moves to the lungs via the pulmonary artery.
  4. After gaseous exchange, the oxygenated blood returns to the heart into the left atrium via the pulmonary vein.
  5. From the left atrium, blood moves to the left ventricle.
  6. Oxygenated blood is pumped by the left ventricle into the aorta which supplies blood to all parts of the body.
  7. Deoxygenated blood, collected from the body again enters into the right atrium via the vana cava.

5 0
3 years ago
When cells break down food molecules energy is
never [62]
When cells break down food molecules energy is released
3 0
3 years ago
Explain the relationship between the processes of breathing and cellular respiration
Eduardwww [97]

Cellular respiration uses oxygen to release the energy stored in food.

Explanation:

In breathing living organisms take oxygen and release the carbon dioxide it is similar to the aerobic respiration.

There are two types of respiration:

1. Aerobic respiration  

2. Anaerobic respiration

Aerobic respiration

It is the breakdown of glucose molecule in the presence of oxygen to yield large amount of energy. Water and carbon dioxide are also produced as a byproduct.

Glucose + oxygen → carbon dioxide + water + 38ATP

Anaerobic Respiration

It is the breakdown of glucose molecule in the absence of oxygen and produce small amount of energy. Alcohol or lactic acid and carbon dioxide are also produced as byproducts.  

Glucose→ lactic acid/alcohol + 2ATP + carbon dioxide!

4 0
3 years ago
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