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My name is Ann [436]
3 years ago
14

Living cells use ____________ as their main source of energy.A)carbohydratesB)celluloseC)lipidsD)proteins

Biology
2 answers:
lara [203]3 years ago
7 0
L think the answer of this question is cellulose
Ber [7]3 years ago
4 0
<h2>Answer:</h2>

The correct option is A carbohydrates.

<h3>Explanation:</h3>
  • Living cells get energy by the process of respiration.
  • Respiration is the process of break down of glucose molecules to release energy.
  • So the main source is glucose ( carbohydrate).

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A researcher investigates a blood disease carried by birds.She isolates an organism from the blood of an infected bird.She finds
Lisa [10]

Answer:

The most appropriate kingdom for this organism would be the kingdom Fungi.

Characteristics of fungi:

  • Cell type: They are eukaryotic organisms which contain well developed nucleus.
  • Cell wall: Cell wall is present around their cells. Their cell walls are primarily composed chitin instead of cellulose.
  • Body organization: They are generally multi-cellular organisms however, few unicellular organisms are also found in this kingdom such as yeast.
  • Mode of nutrition: They are primarily heterotrophic (saprophytes, parasites and symbionts).
  • Mode of reproduction: They can reproduce sexually and asexually by formation of spores in both the methods.

3 0
4 years ago
Which best describes how ocean currents are created?
Y_Kistochka [10]

Answer: Option C

Explanation:

The main reason by which the ocean currents are formed is the rotation of earth. The earth rotates on its own axis and due to this reason there is a huge mixing of the water from the equator and poles which is termed as ocean currents.

Ocean currents are important as it controls the global temperature. The water at the equator is hot and the water at poles are cold.

Due to the rotation of the earth the water and air moves from the colder regions towards the hotter region and hotter to colder and this causes ocean currents.

6 0
3 years ago
Read 2 more answers
If you have a compartment divided by a membrane. There are 8 molecules of SUCROSE on one side of the membrane and 10 molecules o
Radda [10]

Answer:

When there are 5 molecules of fructose on each side of the membrane.

Explanation:

The solution will reach equilibrium fro fructose when there are 5 molecules of fructose on each side of the membrane.

A membranous system is said to be at equilibrium when there are equal concentration of a particular molecule on both sides of the membrane.

<em>Hence, for a membranous system with 10 molecules of fructose on one side, an equilibrium can only be reached for fructose when there are 5 molecules on one side and the remaining 5 molecules on the other side. </em>

7 0
3 years ago
Valves of the heart open and close due to ________. Valves of the heart open and close due to ________. pressure changes timing
stealth61 [152]

Answer: pressure changes

Valves of the heart open and close due to pressure changes

Explanation:

The veins are the blood vessels possessing valves. And because they carry blood away from the heart, the valves helps to prevent back flow of blood due to the low pressure of blood found in the veins.

Thus, Valves of the heart open and close due to pressure changes

8 0
4 years ago
Plants us carbon dioxide for what
Brilliant_brown [7]
Plants use carbon dioxide to breathe basically and then that converts to photosynthesis witch gives them nutrients. And then they release oxygen which humans consume to breathe in then we release carbon dioxide and the circle goes on and on
7 0
3 years ago
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