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hoa [83]
4 years ago
14

Smita is expetimenting with how a paper airplane's shape affects the

Biology
2 answers:
Ugo [173]4 years ago
6 0

Answer:

Its D

Explanation:

Anettt [7]4 years ago
3 0

Answer:

i really don't know this is my question too

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What type of organic compound is the most abundant component of all cell membranes?
mixer [17]
The cell membrane is made out of lipid bilayers and energy. They also have on the outside for identifying
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3 years ago
Reciprocal altruism can be best explained with a model proposed by Robert Trivers in 1971. Trivers hypothesized that if one indi
Leni [432]

Answer:

Reciprocal altruism is one of the altruism behaviors in which an individual organism helps in increasing the fitness of another organism by reducing the fitness of itself temporarily in expectation of the same behavior from another organism in the future later.

It takes place in the same set of organism partners which is a continuous interaction ion in stable groups of organisms.

Thus, the correct answer would be - an ongoing interaction in the same set of partners.

6 0
3 years ago
where they execute important functions. The polypeptide chain of these proteins must cross the lipid bilayer. This presents a pr
spin [16.1K]

Answer:

In this case, it is likely that the polypeptide chain assumed an alpha helix configuration because the lipid bilayer did not have beta-barrel proteins.

Explanation:

A polypeptide chain is naturally polar, however, a lipid bilayer is naturally non-polar. This makes it difficult and even prevents the polypeptide chain from crossing a lipid bilayer, since the composition of these two elements does not allow them to mix. In that case, the polypeptide chain has two options to take to successfully cross the lipid bilayer.

The first option that the polypeptide chain has is to allow the creation of twisted beta sheets in the shape of a closed barrel in its structure. This only works if the lipid bilayer has beta barrel proteins in its composition to act as a transport channel for the polypeptide chain. However, few lipid layers have this protein.

Most likely, the polypeptide chain assumes an alpha helix conformation to cross lipid bilayers that do not have beta-barrel proteins. By assuming the beta conformation, the polypeptide chain reinforces the hydrogen bonds present in its composition, allowing it to cross the lipid bilayer without having its conformation and structure disassembled.

6 0
3 years ago
Use circular motion in a sentence
Olegator [25]

Answer:

1.  To produce the circular motion, they used another concept known as the    magnetron.

2. Set the water in circular motion with a hand or spoon.

3. Start from the center and work outward, using broad, circular motions.

<u>(I hope this helps! :)</u>

5 0
3 years ago
How is nitrogen returned to the atmosphere during the nitrogen cycle? a. it is returned to the atmosphere in a process called ni
AlladinOne [14]

Nitrogen is returned to the atmosphere during the nitrogen cycle in a process referred to as denitrification.

<h3>What is denitrification?</h3>

It is a process whereby nitrogen becomes mineralized from nitrogenous compounds. In other words, it is the reduction of nitrates to produce elemental nitrogen which is returned to the atmosphere.

Denitrification is a microorganisms-driven process. The nitrates are made to pass through a series of reactions with intermediate products before finally leading to the production of elemental nitrogen.

More on the denitrification process can be found here: brainly.com/question/13624886

#SPJ4

5 0
2 years ago
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