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
Ivan
4 years ago
13

The 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:
Anvisha [2.4K]4 years ago
7 0
It is cell wall hope this helps :)
anyanavicka [17]4 years ago
4 0
Correct answer is the Cell Wall
You might be interested in
The end products of photosynthesis include
Arlecino [84]

Answer:

Food for the plant and the ground soil around the plant will get nutrients.

Explanation:

7 0
3 years ago
Why are humans given a species name that means "wise human"?
Amanda [17]
Because humans are seen as the top specie in most senses, especially in knowledge and thinking, which are directly associated with wisdom.
3 0
4 years ago
Dark spots on the photosphere are known as
Natalka [10]
<span>the darkspots on the photosphere are known as : C. sunspots this phenomenon happened because reduced surface temperature cause a concentration of magnetic fluc. The type of electromagnetic radiation that cannot be focused is : A. gamma rays gamam rays caused the electric fluctuation in the field to be much faster than the electron distribution, making it unable to be focused</span>
6 0
3 years ago
T lymphocytes are to the ____________ as b lymphocytes are to the____________. thalamus; bone marrow bone marrow; thymus bone ma
larisa [96]
<span>T lymphocytes are to the <u>thymus</u> as B lymphocytes are to the <u>bone marrow.</u><u /> In mammals, lymphocyte development occurs mainly on the central lymphoid glands (i.e. thymus for T cells and bone marrow for B cells). 

<em>ANSWERS: thymus, bone marrow</em></span>
3 0
3 years ago
_______ factors depend on the number of organisms in a population in a given area.
atroni [7]

Answer:

Population dependent factors depend on the number of organisms in a population in a given area.

Population in dependent factors don't depend on the number of organisms in a given area.

An ecologist is counting the number of individuals of a species in a specific area to determine the population density.

Without population limiting factors, a population could theoretically grow forever.

A micro-climate change is harming a species to the point where a number of organism migrate/move from that area to a new area.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Balanus is inferior to chthamalus in competing for space on rocks lower in the intertidal zone.
    11·1 answer
  • Which of the species you germinated was monocot? Whcih on was a dicot
    11·1 answer
  • Every seven years a certain population of trees experience a year of extremely slowed growth. These periods of slow growth are M
    5·1 answer
  • Is Sweating or shivering are human examples of homeostasis
    12·2 answers
  • Food moves through the digestive system in a series of waves of muscular contractions called ______________.
    5·1 answer
  • Which type of mutation never causes a change in the function of the protein encoded by the mutated gene?
    11·1 answer
  • Observing the picture predict how the water will move and what will happen to the cell.
    10·1 answer
  • 100 POINTS!!!! PLZ DO NOT ANSWER UNLESS YOU GOT A 90% OR BETTER ON THIS PROJECT
    5·2 answers
  • The nucleotide sequence of a strand of DNA TAC -CGG-AGTWhat the amino acid sequence of the resulting protein ?
    15·1 answer
  • ____________________ evolution states that all life on earth is descended from other life and has transformed from, at times, ve
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!