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
Luda [366]
3 years ago
8

How do contractile vacuoles help amoebas maintain homeostasis?

Biology
1 answer:
givi [52]3 years ago
6 0
Single celled organisms such as amoebas, especially those that live in fresh water, continually gain water from their surrounding environment by osmosis. This water is pumped into a contractile vacuole which fills with fluid and periodically fuses with the cell membrane, releasing its contents to the exterior. Thus the amount of water actively transported out of the cell is equal to the amount of water entering the cell due to osmosis and there are no variations in the tonicity of the cell. This is homeostasis at a simple level. Without the contractile vacuole, the amoeba would continue to absorb water until its cytoplasmic contents were diluted to such an extent that metabolism no longer occurred and it would die.
You might be interested in
In the nineteenth century, what was the primary concern of marine scientists ?
Svetlanka [38]

Answer:

a. Documenting species

Explanation:

first half of the century, time in which primarly scientists the discovery of the depth and size of the ocean.

7 0
3 years ago
What molecule is produced after transcription?<br> O tRNA<br> O mRNA<br> O rRNA
Mariana [72]
MRNA because the DNA gets carried
8 0
3 years ago
A scientist is testing the effectiveness of Drug X on cancer. She gives a small amount of the drug to mice that have cancer. She
Leto [7]
C. The size of the tumor before because it doesn't depend on Drug X's effects or the effects/changes from the scientist.
5 0
3 years ago
Read 2 more answers
A que altura debe moverse un costal de cemento de 50kg para asegurar que su energía potencial sea de 10,500 j?
Juli2301 [7.4K]

Answer:

21 m

Explanation:

La energía potencial de un cuerpo es la energía que posee el cuerpo en virtud de su posición.

La energía potencial se da como;

E = mgh

Dónde;

m = masa del cuerpo

g = aceleración por gravedad

h = altura del cuerpo

Aquí necesitamos obtener la altura del cuerpo.

h = E / mg

h = 10500/50 * 10

h = 21 m

6 0
2 years ago
How has urbanization changed land,air and water quality
bulgar [2K]

Urbanization has changed literally everything over the years from the environment being destroyed little by little but also it effects water pollution and by factories being made puts a bunch of terrible greenhouse gasses that are not healthy to breath in.

mark this as best if helps

3 0
3 years ago
Other questions:
  • Explain in YOUR own words please Newtons 3 laws of motion
    6·2 answers
  • Define pathogenicity and virulence.
    5·1 answer
  • How does feedback inhibition affect enzyme activity?
    6·1 answer
  • Which letter below would represent Adenine?*<br>А, В, or C​
    13·2 answers
  • Sometimes the concentration of glucose inside of a cell is higher than the concentration outside of that cell, yet glucose conti
    6·1 answer
  • How often does oxygen cycle through the atmosphere?
    6·2 answers
  • Which is true of sex-linked genes?
    13·2 answers
  • What are the oceanic features and functions
    15·2 answers
  • Which cell organelle is used to move fluid across the outside of the cell
    9·2 answers
  • What percentage of ticks carry lyme disease?.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!