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3 years ago

Which elements are the most abundant in living organisms? Select all that apply.

Biology

2 answers:

Vanyuwa [196]3 years ago

6 0

Carbon oxygen and hydrogen

Mekhanik [1.2K]3 years ago

4 0

yep carbon oxygen and hydrogen

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What do aerobic respiration and anaerobic respiration have in common?

VARVARA [1.3K]

They both provide energy for the body. They both occur in the muscle cells.

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3 years ago

All the known fossils compose what we call the fossil record and evidence of evolution can be found in the fossil record. true o

Sati [7]

False. this earth has always had life. be it microscopic cells to a gigantic titanosaurus

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3 years ago

If the number of photosynthetic organisms on Earth decreased drastically, which would happen as a result? Less water would be av

jolli1 [7]

Answer:

4th one is correct :)

More carbon dioxide gas would be found in Earth's atmosphere

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3 years ago

Distinguish between major classes of biomolecules, proteins, lipids, carbohydrates, nucleic acids?

olasank [31]

Answer:

Proteins (polymers of amino acids)

Carbohydrates (polymers of sugars)

Lipids (polymers of lipid monomers)

Nucleic acids (DNA and RNA; polymers of nucleotides)

Explanation:

Proteins:

Chemical formula is CHON

−NH2 + −COOH +R group

Monomer is Amino acids.

Examples are enzymes, and some hormones.

Uses are Storage; Signals; Structural; Contractile; Defensive; Enzyme; Transport; Receptors.

Lipids:

Chemical formula is C:H:O

Greater than 2:1 H:O (carboxyl group)

Monomer is fatty acid and glycerol.

Examples are butter, oil, cholesterol, beeswax.

Functions are energy storage; Protection; Chemical messengers; Repel water.

Carbohydrates:

Chemical formula is C:H:O

1:2:1

Monomer is monosaccharides.

Examples are Glucose, Fructose, Starch, Glycogen, Cellulose.

Uses are energy storage; structure.

Nucleic Acids:

Chemical formula is CHONP

(pentose, nitrogenous base, phosphate ).

Monomer is nucleotides.

Examples are DNA, RNA.

Uses are Genetic information

5 0

3 years ago

Read 2 more answers

In the ocean, plants and other photosynthetic organisms take in carbon. This carbon is transferred through the food web into the

musickatia [10]

Answer:

C. Oceans are carbon sinks because they store more carbon than they emit.

Explanation:

Oceans are carbon sinks because they store more carbon than they emit. Most of the carbon is produced in the respiration process as well as burning of fossil fuels. This carbon moves to the atmosphere and dissolved into the ocean which is required by the vegetation of ocean. Due to this carbon, vegetation produced more food for the organisms. About 25% of all CO2 emissions are absorbed by the ocean. Source is the part of a plant where materials are produced e.g. leaves whereas Sink refers to the part of the plant where the substrate can be stored e.g. roots or stem for starch.

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2 years ago