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Scilla [17]
3 years ago
14

Mr. Brown used the model shown below when discussing plant cells with his class. Why did Mr. Brown use a model?

Biology
1 answer:
Misha Larkins [42]3 years ago
4 0

Answer: B

Explanation:

A model is easier to see, rather than having a real plant cell that you have to see with a telescope. So B is the answer. Hope this helps!

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_____ act as signals or markers to help cells recognize one another.
Varvara68 [4.7K]

Explanation:

-<u>Carbohydrates </u>act as signals or markers to help cells recognize one another.

Carbohydrates are organic macromolecules with a range of functions within organisms. They may act as energy storage, structural support, and signal molecules. Together with transmembrane proteins embedded within the membrane from the extracellular fluid to the cytoplasm, they form glycoproteins (proteins attached to carbohydrates) which function as cell surface markers .

 

Further Explanation:

Carbon, is the backbone of all biological life on Earth. It contains 6 electrons, with 4 on its valence shell, and thus, readily forms covalent bonds with other elements. Covalent bonding involves the sharing of electrons; in nature, this occurs with hydrogen,oxygen, nitrogen, and phosphorus as highly flexible single bonds capable of rotation; rigid, non-rotating  double; and very strong triple bonds. Carbon compounds form rings, and long branched chains- thus, carbon can form macromolecules in nature.

In nature, organic compounds may be large chains of monomers form biological macromolecules which carry out many essential functions in the body. These can include nucleic acids, carbohydrates, proteins and lipids. These are organic molecules, meaning they're ringed or long-chain Carbons bonded to the elements oxygen (O), hydrogen (H), nitrogen (N) and phosphorus (P); they are found in essential organic biomolecules include, proteins, nucleic acids, lipids and carbohydrates.

Carbohydrates function to supply energy and support molecules they consist of mainly sugars or starches in long chains and rings to form monosaccharide monomers. They include monosaccharides, disaccharides and polysaccharides which describes the type of bonding and the degree of complexity of the polymers. Basic makeup: C, H, O -with many polar OH groups

Learn more on  proteins and carbohydrates at brainly.com/question/10744528

Learn more on membrane components at brainly.com/question/1971706

#LearnWithBrainly

3 0
4 years ago
What is the role of the chromosomes in cell division?
Genrish500 [490]
The role of chromosomes in cell division is to ensure the DNA is accurately replicated.
5 0
4 years ago
The ozone destroying pollutants primarily comes from air conditioner coolants, refrigerator coolant, aerosol spray, and plastic
nydimaria [60]

Answer:

true

Explanation:

Chlorofluorocarbons or CFCs are the main cause of ozone layer depletion. These are released by solvents, spray aerosols, refrigerators, air-conditioners, etc. The molecules of chlorofluorocarbons in the stratosphere are broken down by the ultraviolet radiations and release chlorine atoms.

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A.1- the groundwater carries minerals, nutrients, and yes salt into the ocean.
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3 years ago
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Which is a FALSE statement about the blood that leaves the heart through the aorta?
olga55 [171]
I fell like its A but it could also be C try one hope this helps
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