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
maria [59]
3 years ago
12

What is the feature of the cell membrane that causes it to be able to "choose" what materials enter and exit?

Biology
1 answer:
mixer [17]3 years ago
6 0
Cell membranes are semi-permeable. That is why they can allow only some substances to enter the cell. It basically depends on the size of the molecules. Smaller atoms like water can easily pass through. However, macromolecules such as sugars, oils and proteins cannot easily pass because they contain a long chain of monomers.
You might be interested in
Please answer I'm BEGGING!!!!!!!!!!
FromTheMoon [43]

Nitrogen.


Plants cannot use atmospheric nitrogen directly. Nitrogen from the air must be converted into the different form so plants can absorb it. Thus plants need nitrogen-fixing bacteria to convert atmospheric nitrogen into ammonium, which is available for plants to absorb it.

5 0
2 years ago
If a gene is replaced with a heterologous sequence such that the gene is then nonfunctional, what is the result usually called
saveliy_v [14]

Answer:

Knockout

Explanation:

the answer is knockout

5 0
2 years ago
Paraphrase four safety practices you should always use when you begin scientific inquiry
vovikov84 [41]
Scientific inquiry is asking a question about the world and finding out an answer or explanation in order <span>to develop explanations of natural phenomena in a continuing and creative process. It is very important to follow safety rules during every scientific inquiry:
</span><span>1.Do not taste, touch, or smell substances unless directed to do so.
</span><span>2.Wear safety glasses and other required safety equipment.
</span><span>3. Keep the lab area, including table top and walkways, clear of unnecessary items.
4. </span>H<span>andle all equipment carefully and as directed.</span>
8 0
3 years ago
What do producers do with the disassembled organic matter found in soil?
GuDViN [60]

Answer:

B. they absorb it to make their own food

Explanation:

Producers absorb the disassembled organic matter found in soil to make their own food.

8 0
3 years ago
Read 2 more answers
Explain why cells regulate the synthesis of enzymes
Degger [83]

Answer:

Here's Why:

Explanation:

In living cells there are hundreds of different enzymes working together in a coordinated manner, and since cells neither synthesize nor break down more material than is required for normal metabolism and growth, precise enzyme regulation is required for turning metabolic reactions on and off.

8 0
3 years ago
Other questions:
  • What are the elements weather for sunny weather
    13·1 answer
  • True or False? Invertebrate animals represent the largest and most diverse group of animal species on the planet.
    13·1 answer
  • The crossover percentage between two different genes is __________.
    9·1 answer
  • What organism is needed for protein synthesis??
    7·1 answer
  • Please help me on this question
    11·1 answer
  • Tallness (T) is dominant to shortness (t) in pea plants. Which of the following represents a genotype of a pea plant that is het
    12·1 answer
  • The Northern and Southern Hemispheres experience opposite seasons and different day lengths, no matter what time of year. What i
    5·2 answers
  • Which of the following is most likely true of a protein that cotransports glucose and sodium ions into the intestinal cells of a
    13·2 answers
  • THE ONE ON THE LEFT
    15·1 answer
  • When an organism becomes infected with bacteria the immune system kicks in to help rid the body of the foreign organisms. Explai
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!