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Marysya12 [62]
3 years ago
8

Why are people concerned about the sustainability of fossil fuels?

Biology
2 answers:
dolphi86 [110]3 years ago
7 0
Let’s see what do you think number 1 is? We will go from there
Reptile [31]3 years ago
4 0

Answer:

How about you tell what ur answers and ill see if there wrong and help u with them ..?

is that okay?

we all have our own school work to do so ill try and help just give me ur answers :)

Explanation:

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Global climate change
Drupady [299]

Answer:

ok yes it changes but what is the question

Explanation:

8 0
3 years ago
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Resethelp 1. Structure describes the alpha-helices and beta-sheets that are formed by hydrogen bonding between backbone atoms lo
ss7ja [257]

1. Answer;

-secondary structure;

Explanation;

Protein secondary structure refers to regular, repeated patterns of folding of the protein backbone. The two most common folding patterns are the alpha helix and the beta sheet. In an alpha helix, the polypeptide backbone coils around an imaginary helix axis in clockwise direction. In the beta sheet secondary structure, the polypeptide backbone is nearly fully extended. The R-groups are alternately pointed above and then below the extended backbone.

2. Answer;

- Quaternary structure

Explanation;

-Many proteins are formed from more than one polypeptide chain. The Quaternary structure describes the way in which the different subunits are packed together to form the overall structure of the protein. For example, the human hemoglobin molecule shown below is made of four subunits.

3. Answer;

-Tertiary structure

Explanation;

Tertiary structure refers to the overall folding of the entire polypeptide chain into a specific 3D shape. The tertiary structure of enzymes is often a compact, globular shape.

The tertiary structure is the structure at which polypeptide chains become functional. At this level, every protein has a specific three-dimensional shape and presents functional groups on its outer surface, allowing it to interact with other molecules, and giving it its unique function.

4. Answer;

Primary structure

Explanation;

-It is the simplest level of protein structure and is simply a sequence of amino acids in a polypeptide chain. For example, the hormone insulin has two polypeptide chains, A and B. Each chain has its own set of amino acids, assembled in a particular order. For instance, the sequence of the A chain starts with glycine at the N-terminus and ends with asparagine at the C-terminus, and is different from the sequence of the B chain.

7 0
3 years ago
WILL GIVE BRAINLIEST PLEASE ANSWER
velikii [3]
Including the arthropods (e.g., insects, crabs), mollusks (clams, snails), annelid worms

including those of the phyla Echinodermata (e.g., starfish, sea urchins), Chordata (e.g., sea squirts, lancelets, and vertebrates), Chaetognatha (e.g., arrowwo
8 0
3 years ago
How are photosynthesis and cellular respiration related?
Margarita [4]

I'd go with the third one because the products of both of them are oxygen and carbon dioxide.

8 0
3 years ago
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What is an important function of mitochondria?
stellarik [79]
The most prominent roles of mitochondria<span> are to produce the energy currency of the cell, ATP (i.e., phosphorylation of ADP), through respiration, and to regulate cellular metabolism. The central set of reactions involved in ATP production are collectively known as the citric acid cycle, or the Krebs cycle</span>
6 0
3 years ago
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