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
nasty-shy [4]
3 years ago
8

In a typical terrestrial ecosystem, energy input comes directly from the sun, and it is converted to chemical energy through pho

tosynthesis. Interestingly, an unusual ecosystem can exist in the absence of sunlight. What could be the source of energy?
Biology
1 answer:
vova2212 [387]3 years ago
5 0

Answer:

The oxidation of inorganic substances (H2S etc.) serves as the energy source for hydrothermal vents.

Explanation:

Deep hydrothermal vents (the unusual ecosystems) are located in the depths of oceans where sunlight can not penetrate. These ecosystems have the bacteria that oxidize the inorganic substances such as H2S and the released energy is used to fix the CO2 present dissolved in water.  

Here, the inorganic substances such as hydrogen sulfide are released from the volcanic vents present in the ocean floors.  

You might be interested in
Melanie is asked to list the complementary base pairings of a DNA sample in her lab. What is the MOST appropriate response she c
rodikova [14]

Answer:

AT, CG, CG, AT, CG

Explanation:

Hi, the answer is the last one, AT, CG, CG, AT, CG.

When we read the question, it says base pairings of a DNA sample in her lab. The only base pairs in DNA is A, T, C, and G.

A is complementary to T, and C is complementary to G.

Therefore, you can eliminate the first three.

Hope this helps you!

3 0
3 years ago
The cell membrane (plasma membrane) is describe as a highly selective
kodGreya [7K]

Answer:

O To prevent certain ions and molecules from entering or exiting the celI.

Explanation:

The cell needs to keep a constant chemical composition on the inside in order to mantain homeostasis

3 0
3 years ago
Which of the following best describes the difference between a mixture and a pure substance?
ratelena [41]
<span>best describes the difference between a mixture and a pure substance is D. for example tea and water makes tea its a mixture and water is just water ... therefor water a compound 
</span>
4 0
3 years ago
To determine the density of a rabbit population, one would need to know the number of rabbits and __________. View Available Hin
serg [7]

Answer:

The growth rate.

Explanation:

To determine the density of a rabbit population, one would need to know the number of rabbits and the growth rate of rabbit's population because both factors allow us to determined the population of rabbit in a specific region. If we know the existing population of rabbits in a particular area as well as the growth rate at which the rabbit population increases so we can find out the density of rabbit population in a specific time period.

7 0
3 years ago
Some enzymes may be used to stop a reaction from moving forward
GREYUIT [131]
1. The statement above is TRUE. 
There are different types of enzymes which perform different functions. Some enzymes are capable of limiting chemical reaction, stopping the reaction from moving forward, such type of enzymes are called REGULATORY ENZYMES. This type of enzyme regulate the activities of other enzymes. The use of regulatory enzymes is one of the means which the body used to control biochemical reactions. 

2. A chemical reaction producing energy for the cell is GLYCOLYSIS.
Glycolysis is the biochemical process by which the glucose molecules are broken down in order to produce energy for the body. <span>Embden-Meyerhof Pathway is one of the major pathway of glycolysis but it is not the only one, there are other glycolytic pathways in living organisms. Glycolysis is the principal way by which energy is supplied to the cells.</span>
5 0
4 years ago
Other questions:
  • how many kinds of alternative energy sources are there and can you plz tell me the names and what they do
    7·2 answers
  • What would most likely happen to a unicellular organism if it was exposed to a hypotonic solution for an extended period of time
    13·2 answers
  • How is scientific thinking useful in daily life
    5·1 answer
  • Pulse: select one:
    11·1 answer
  • which was a major cause for the entry of the u.s. into world war i? a) germany's invasion of belgium b) the desire to collect re
    15·2 answers
  • What type of molecule is the cell membrane composed of
    6·1 answer
  • After throwing a basketball through the net, Anna observed the ball as it hit the
    15·2 answers
  • Which of the following pairs correctly matches the type of cell division with
    9·1 answer
  • Why is chlorine added during water purification?​
    5·1 answer
  • Can you explain why
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!