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2 years ago

Which of these foods would give the highest positive biuret test chicken butter coconut potatoes cookies?

1 answer:

Nadusha1986 [10]2 years ago

3 0

The answer is chicken.

Biuret test is used to detect the presence of peptide bonds. Peptide bonds exist in proteins, so when they are present the test comes purple(positive).
Protein is found in big amouts in meat, fish and tofu.
From the options the one with the biggest amount of protein is chicken(around 33g/100g) and will cause the highest positive reaction in the biuret test.
Coconut and potato also have it, but its very little. They are rich in other macronutrients.
Cookies are full of sugar, not protein.
Butter is a source of fat, not protein.

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The correct option is D. <u>The chemical bond breaks between the second and third phosphate groups.</u>

Explanation:

Adenosine phosphate (ATP) can be described as main energy-carrying molecules which are required by each cell to carry out its normal functions.

A molecule of ATP comprises of the nitrogenous base Adenine, pentose sugar ribose and three molecules of phosphate.

The bond between the second and third molecule carries high amounts of energy. When this bond is broken, huge amounts of energy is released which is used by the cells to carry out essential processes.

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Build several models of his tree house out of different materials, and see which model holds up best to wind, water, and ice.

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7. In a chemical reaction, which event ALWAYS occurs as the reaction proceeds?

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In fruit flies, straight wings are dominant and curly wings are recessive. What will the generations look like? Assume that Mend

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Answer:

The P generation has straight wings and curly wings.

The F1 generation has all straight wings.

The F2 generation has straight wings and curly wings.

Explanation:

This question involves a single gene coding for wing shape in fruit flies. The allele for straight wings (S) is dominant over the allele for curly wings (s). This means that allele "S" will mask the phenotypic expression of allele "s" in a heterozygous state.

According to the question, the cross follows all Mendel's method of crossing two true breeding parents with opposite traits. Hence, the parent generation (P generation) will be between a truebreeding straight wings parent (SS) and a truebreeding curly wings parent (ss). (See attached image for full cross).

Since the straight wing allele (S) is dominant, all the F1 offsprings will possess straight wings with the genotype: Ss, which is heterozygous.

If this F1 offsprings are self-crossed i.e. Ss × Ss, four possible offsprings in the phenotypic ratio 3 straight wings : 1 curly wing will be produced in the F2 generation. The offsprings will possess the following genotypes: SS, Ss, Ss, and ss.

Offsprings SS, Ss, and Ss will all be phenotypically straight-winged

Offsprings ss will be phenotypically curly-winged.

In overall, this means that P generation has both straight and curly wings (SS and ss), F1 generation has only straight wings (Ss), F2 generation has both straight and curly wings (SS, Ss and ss).

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