A synthetic 20 amino acid polypeptide named Betanova was designed as a small soluble molecule that would theoretically form stable beta-sheet structures in the absence of disulfide bonds. NMR of Betanova in solution indicates that it does, in fact, form a three-stranded antiparallel beta-sheet. Given the sequence of Betanova below where would you predict lie the turns in this sequence.
Draw the structure of Betanova showing strands and turns:
Betanova RGWSVQNGKYTNNGKTTEGR

Answer:

The β-Turns in this sequence are two and include the Glycine (G), the two anterior amino acids, and the one posterior amino acid.

You will find the molecule image in the attached file.

Explanation:

β-Turns are structural elements that intervene in the orientation of the polypeptide backbone. These are short sequences of amino acids, with a characteristic conformation, that imposes a sharp 180º turn on the polypeptide chain. They are very abundant in globular proteins, such as Betanova, connecting the two adjacent antiparallel segments of the sheet.    

They are mostly composed of four amino acids. In most cases, the third amino acid is usually Glycine, and in other cases, the second amino acid is Proline. In any case, the first residue of the sequence forms a hydrogen bridge with the last residue of the sequence, linking the amide-group of the last amino acid with the carbonyl-group of the first amino acid in the sequence.    

According to the given sequence of the protein, we can find two specific regions in the molecule that contains glycine (G). Proline is not present in Betanova. Following the theory, in most turns, Gly seems to be the third amino acid of the short sequence. So, we can assume that the first two amino acids that are located before the G and the amino acid located after the G, are the ones that compose the β-Turns.

RGWSVQNGKYTNNGKTTEGR      

In the attached image, you will find the structure of Betanova showing strands (black arrows) and turns (red arrows).  

PLS HELP ! picture included. max points

7.An experiment was conducted that showd the building blocks of life (amino acids) could indeed be formed by the combination of warm salt water, volcanic gases, and sparks of electricity.

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Question 1 options:

All the biomes in Texas


Rocks, soil, water, and air on Earth


Rainforest


Earth

The process of fermentation happens

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2. What evidence gives us insight into early human behavior?
O cave paintings
O DNA base sequences
skeletal remains

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Which observation can you make about the apparent brightness of the star Sirius

A: The star is larger than the other stars in the sky.

B: The star is farther away from earth so it appears brighter.

C: The star is reflecting the sun’s light.

D: The star is closer to earth so it appears brighter

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Group of answer choices

erosion of soild by flowing water

photosynthesis in a large rain forest

formation of icebergs as glaciers reach the sea

breaking down of rocks by mechanical weathering of tree roots

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What is the main concern with persistent organic pollutants (POPs)?
a.
They are only found in plants, and they disrupt photosynthesis.
b.
They quickly break down into more harmful pollutants.
c.
Although they are rarely found, they are very toxic.
d.
They can be concentrated in an organism’s fat tissues.
e.
They are soluble in water and cause large-scale problems.

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In many parts of the world, the use of solar panels and wind turbines can generate electricity more cheaply than the processes
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gas fluctuate much less so. Therefore, electricity investors are taking a closer look at funding renewable energies like solar and
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Read the prompt here. Based on the information, which of these BEST identifies the author's claim about electricity generation from
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A)
Unpredictable situations will always cause a shift in energy uses in the
future
B)
Nonrenewable energy sources are increasing due to excessive reserves.
Reliance on coal and natural gas decreases due to availability,
D)
Renewable energy sources increase due to economic advantages

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A. 20
B. 80
C. 40

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Strains of petunias come in four pure-breeding colors: white, blue, red, and purple. White petunias are produced when plants synthesize no flower pigment. Blue petunias and red petunias are produced when plants synthesize blue or red pigment only. Purple petunias are produced in plants that synthesize both red and blue pigment.
The mixture of red and blue makes purple. Flower-color pigments are synthesized by gene action in two separate pigment-producing biochemical pathways. Pathway I contains gene A that produces an enzyme to catalyze conversion of a colorless pigment designated White 1 to blue pigment. In Pathway II, the enzymatic product of gene B converts the colorless pigment designated White 2 to red pigment. The two genes assort independently.
Part A: What are the possible genotype(s) for pure-breeding red petunias?
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Part B: What are the possible genotype(s) for true-breeding blue petunias?
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Which gesture demonstrates that a speaker is uninterested in a conversation?

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Are cyclin and kinases are internal or extra?

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B. The total amount of energy in the universe remains the same.
C. All of these
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19)
Genetic engineering is a branch of science that uses biotechnology tools to make modifications to organisms to express new
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A)
Genetically modified foods are dangerous for human consumption
B)
Genetically modified crops can contain DNA from two different species.
entific
cats
C)
Genetically modified crops increase the genetic diversity of a species.
D)
Genetically modified crops may grow in areas outside of the native range.
ghtight
Time
E)
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Other than wind, the most significant factor that influences the movement of ocean water at the surface is the

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