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4 years ago

Help me....................?

Biology

1 answer:

melomori [17]4 years ago

5 0

A... Prokaryotes and Eukaryotes have different cellular structures i.e., presence of mitochondria, chloroplasts, and a cell wall.

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Marie and Pierre Curie coined which term to describe the ability of certain elements to give off radiation spontaneously?

Rasek [7]

Here is your answer

C. Radioactivity

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3 years ago

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Mariana [72]

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3 years ago

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A scientist is studying fruit fly wings. Straight wings are dominant, and curly wings are recessive. Which statement correctly d

svetoff [14.1K]

The offspring will have one allele for straight wings and one allele for curly wings.

Explanation:

Let W be straight wings (big letter for dominant allele)
Let w be curly wings (small letter for recessive allele)

Each fly has two alleles.
If a parent is true breeding, it only has one type of allele.
Parent 1 = WW (straight wings)
Parent 2 = ww (curly wings)

Cross the parents: WW x ww in a Punnett square (see photo below)
This is the F1 generation (generation produced by crossing the first parents).
There are only Ww offspring.

Therefore,
The offspring will have one allele for straight wings and one allele for curly wings.

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3 years ago

The diagram illustrates the water cycle.

Akimi4 [234]

Answer:

The answer is Y

Explanation:

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3 years ago

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Phase II drug degradation reactions involves linking of conjugates to the drugs are ___

Sergio [31]

Answer:

Hi!

The answer is (C) Both (a) and (b)

Explanation:

Drug Metabolism:

Drug metabolism is divided into two steps: Phase 1 and Phase 2 reactions.
Phase 1 reactions involve the degradation or formation of functional groups.
Phase 2 reactions involve the conjugation of the drug or its Phase 1 intermediate with a polar conjugating molecule. Phase 2 generally performs the detoxification step in the drug degradation process.
Phase 2 or conjugation reactions are further divided into 2 types:
Type 1: Glucoronidation and sulfonation: An activated conjugating molecule such as glucoronic acid, sulfate or glutathione etc. is combined with the drug to form a conjugated molecule.
Type 2: Amino acid conjugation: An activated drug or substrate is conjugated with an amino acid such as glycine or glutamine.

Glutathione Conjugation:

Glutathione is a tripeptide found in most tissues, particularly in the liver. It performs important detoxification functions for all cells. The enzyme, glutathione S-transferase conjugates glutathione with drug intermediates to form a drug-glutathione conjugate. This conjugate can easily be excreted through bile or urine.

Amino acid Conjugation:

This is an important reaction in xenobiotic biotransformation; particularly for xenobiotics with carboxylic group or an aromatic hydroxylamine groups. Drug intermediates combine with glycine or glutamine to form an amino acid conjugate.

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4 years ago