1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
aksik [14]
3 years ago
10

Please select the word from the list that best fits the definition

Biology
2 answers:
posledela3 years ago
6 0

Answer:

oxygen

Explanation:

The oxygen makes up 21% of the atmosphere. hope it helps.

Sergeeva-Olga [200]3 years ago
6 0

Answer:

Oxygen

Explanation:

Oxygen makes up 21% of earths atmosphere while nitrogen fills up 78%.

You might be interested in
The study of early development of organisms is called
inysia [295]

The study of early development of organisms is called embryology.

hope this helped, please mark brainliest :)

8 0
2 years ago
What would happen to skin cells if mitosis did not take place
lina2011 [118]

Answer:

Skin cells would die and not be replaced.

Explanation:

7 0
2 years ago
When an enzyme is denatured, what happens to the enzyme?
nignag [31]
Change the pH and the enzyme<span> stops working. Increasing the temperature to 60°C will cause a permanent change to the shape of the active site. This is why </span>enzymes<span> stop working when they are heated. We say they have become </span>denatured<span>.</span>
7 0
3 years ago
Read 2 more answers
18. How do organisms grow?
hjlf
A through cell division and production
8 0
3 years ago
A mutant strain of yeast is able to produce 2 ATP for each glucose molecule digested in the absence of oxygen. What makes this s
Free_Kalibri [48]

Answer:

Explanation:

Normally, under anaerobic condition in yeast, pyruvate produced from glycolysis leads to the production of ethanol as shown below.

pyruvate ⇒ acetaldehyde + NADH ⇒ ethanol + NAD

The pyruvate is converted to acetaldehyde by the enzyme, pyruvate decarboxylase. It should be NOTED that carbon dioxide is released in this step. The acetaldehyde produced in the "first step" is then converted to ethanol by the enzyme alcohol dehydrogenase. It must be noted from the above that the steps are irreversible.

If a mutated strain of yeast is unique because it does not produce alcohol and lactic acid (which is referred to as toxic acid in the question); thus having a high level of pyruvate because of the presence of a novel enzyme.   <u>The function of this novel enzyme will most likely be the conversion of acetaldehyde in the presence of carbondioxide back to pyruvate; thus making that step reversible</u>. This could be a possible explanation for the high level of pyruvate present in the yeast.

6 0
2 years ago
Other questions:
  • Cotton plants produce seeds that contain high-quality protein. This protein could be used as a food source except that the seeds
    12·1 answer
  • Maintenance of optimal cell functioning requires a balanced cellular environment called
    6·2 answers
  • A condition of stones in the common bile duct is called
    10·1 answer
  • Please select the word from the list that best fits the definition
    12·2 answers
  • Oxidative metabolism takes place in the ___________________ of the cell.
    14·1 answer
  • Why do plants have a greater disadvantage in unpredictable environments than animals?
    11·2 answers
  • What effect does the pH of water have on radish seed germination?
    9·1 answer
  • Climate Change or Global Warming POSSIBLE POINTS 4 Explain in full sentences the relationship between global warning and climate
    6·2 answers
  • Imagine that you are a baseball, and are being used in a game. Write a story that tells about the different forces you feel duri
    12·1 answer
  • A woman standing and watching the stars on a cool, calm night will lose most of her body heat by _________.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!