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
Nastasia [14]
3 years ago
8

He cell membrane forms a protective barrier between the external and internal environments. It is referred to as _______________

____, because it allows some substances to cross more easily than others and blocks other substances from crossing into the cell.
Biology
2 answers:
Ray Of Light [21]3 years ago
8 0

Answer:

Selectively permeable

Explanation:

Vsevolod [243]3 years ago
5 0
It is referred to as a selective semipermeable membrane because it only allows certain things through, due to the size and shape of whatever is trying to get through.
You might be interested in
Which substance on the plasma membrane helps identify chemical signals from outside the cell?
cluponka [151]

Answer:

<em><u>The correct option is A) carbohydrate chain</u></em>

Explanation:

The carbohydrate chain present in the cell membrane helps determine the characteristics of the cell and it also helps to identify the chemical signals from outside the cell. Hence, option A is correct.

Other options, like option B, is not correct because the function of the cholesterol in the cell membrane is to prevent the fatty acids from sticking together. Option D is not correct because transport proteins help some molecules to move inside the cell.

6 0
3 years ago
Animals wresting is a way of learning called
sukhopar [10]

sex sex sex? mating? ????

5 0
3 years ago
Read 2 more answers
The Celsius temperature scale is also something called the centigrade scale. Why is this?
valentinak56 [21]
There are three temperature scales in use today, Fahrenheit, Celsius and Kelvin.

Fahrenheit temperature scale is a scale based on 32 for the freezing point of water and 212 for the boiling point of water, the interval between the two being divided into 180 parts. The 18th-century German physicist Daniel Gabriel Fahrenheit originally took as the zero of his scale the temperature of an equal ice-salt mixture and selected the values of 30 and 90 for the freezing point of water and normal body temperature, respectively; these later were revised to 32 and 96, but the final scale required an adjustment to 98.6 for the latter value.

Until the 1970s the Fahrenheit temperature scale was in general common use in English-speaking countries; the Celsius, or centigrade, scale was employed in most other countries and for scientific purposes worldwide. Since that time, however, most English-speaking countries have officially adopted the Celsius scale. The conversion formula for a temperature that is expressed on the Celsius (C) scale to its Fahrenheit (F) representation is: F = 9/5C + 32.


Hope this helps.

4 0
3 years ago
All of the following are arguments used by global warming skeptics except
zhuklara [117]

Explanation:

the answer is b because the consewuences of global warming had not yet pass

6 0
3 years ago
Which statement describes how enzymes and substrates are related? The enzyme influences the speed of change from substrate to pr
azamat

Correct answer: A). The enzyme influences the speed of change from substrate to product

The enzymes are the biological catalyst that speed up the rate of chemical reactions by decreasing the activation energy of the reaction pathway.

They increase the speed of change of substrate to the product and it remains unchanged in the reaction. Hence, it can be used again and again.

Enzymes are highly specific in nature, only a specific substrate binds to the enzyme's active site. Hence, a particular enzyme is required to catalyze a reaction.






3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the main function of the large intestine?
    12·1 answer
  • Write a paragraph on how Blood Glucose goes with Negative Feedback
    10·1 answer
  • When you put your finger on your newborn nephew's palm, he curls his own fingers around yours, grasping your finger tightly. You
    12·2 answers
  • How does an enveloped virus gain/obtain/get its envelope?
    10·1 answer
  • Sensory receptors that are located in the skin and sense touch, pain, heat, and cold are called: Answer
    14·1 answer
  • Douglas and McGarty (2001) reported that the anonymity of Internet chat rooms, newsgroups and listservs seems to foster more hos
    12·1 answer
  • Why does salad wilts as soon as salt is added?
    7·1 answer
  • PLEASE HELP In the process of mitosis, _____ new cells are formed from one<br> original cell.
    7·1 answer
  • Help!!! The question is in the picture.
    9·1 answer
  • Here you go! Good Luck.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!