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
vodomira [7]
3 years ago
12

Plsss helps plss Extra 20 points

Biology
1 answer:
JulijaS [17]3 years ago
5 0
A is the answer I’m sure because I just took the test
You might be interested in
The cell is separated into two parts
yaroslaw [1]
Its prophase one or prophase 2
4 0
3 years ago
Which gas does not occur naturally in the atmosphere in any amount but was solely created by human activity? Support your answer
SpyIntel [72]

Answer:

Carbon monoxide.

Explanation:

Carbon monoxide is a gas that consists of an oxygen and a carbon to be able to fulfill the complete molecule, it is a potentially dangerous gas for life on this earth.

On the other hand, what differentiates it from carbon dioxide is that it has two oxygens that are coupled with a carbon to fulfill the complete molecule.

Both gases are pollutants, and produced by man, it is considered that these in high partial pressures in the atmosphere generate a mortal potential for humans since they have more affinity with the hemoglobin protein that is the human gas transporter par excellence, the which oxygenates the tissues.

If the oxygen drops in partial pressure and these toxic gases increase, the hemoglobin having a higher affinity will bind to them and toxify the human body, preventing oxygenation.

7 0
2 years ago
What happens in chemosynthesis?
klio [65]
I do not really know but i think that the answer is c but wait for other people
6 0
2 years ago
Read 2 more answers
Why doesnt pepsin, the enzyme released in the stomach to
Fiesta28 [93]

Answer: unfavourable ph condition for the pepsin

Explanation: during digestion, enzymes are needed to aid the process.digestive enzymes are biological catalyst that breakdown large food particles into digestible form .

As biological catalyst, enzymes require an optimum temperature and pH condition.outside this temperature or pH,the enzyme is denatured.

In the stomach, hydrochloric acid is required to convert pepsinogen into it's active form,pepsin.the acid also creates an optimum low pH that pepsin needs to function.

As the food moves to the small intestine,the pH is alkaline and is unfavourable for pepsin to function.

4 0
3 years ago
Which statements apply to comets? Check all that apply.
lora16 [44]

Answer:

formed of ice, rock, and dust

develop tails near the Sun

Explanation:

Comet is a smaller celestial body which is mainly composed of ice and dust.

The other components of this comet are rocks and gas.

When any comet approaches a sun it can deliver a tail of dust or gas.

hope this will help you

5 0
2 years ago
Other questions:
  • What is the substance in tobacco products that causes stained teeth and skin?
    12·2 answers
  • 1 point
    6·1 answer
  • The number of pythons found throughout Everglades National Park
    7·1 answer
  • Which unit of measurement best matches the size of microorganisms
    10·1 answer
  • 3
    12·1 answer
  • Most of the Earth's volume is contained in the _______ .
    9·1 answer
  • What happens during carbon fixation?
    6·1 answer
  • How many lobes does the liver have
    7·1 answer
  • 36. Mitosis requires the chromosome to be replicated into______ copies.<br> a. 2<br> b. 6<br> c. 1
    9·2 answers
  • Do Chloroplasts?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!