which of these are in nucleotides

A.deoxyribose
B.Phosphate
C.Enzyme
D.A nitrogen base

A.deoxyribose

B.Phosphate
D.A nitrogen base

wrong

I apologize for the incorrect response.

The correct answer is:

A. Deoxyribose is a sugar found in DNA nucleotides.
B. Phosphate is a molecule that forms the backbone of DNA and RNA molecules.
D. A nitrogen base refers to the nitrogen-containing molecules that make up the building blocks of DNA and RNA, such as adenine (A), thymine (T), cytosine (C), guanine (G), and uracil (U) in RNA.

C. Enzyme is not a component of nucleotides. Enzymes are proteins that catalyze biochemical reactions.

To determine which of the given options are nucleotides, we need to understand the components of a nucleotide. Nucleotides are the building blocks of nucleic acids, such as DNA and RNA. A nucleotide consists of three main parts: a sugar molecule (either ribose or deoxyribose), a phosphate group, and a nitrogenous base.

Let's now analyze each option to see if it is present in nucleotides:

A. Deoxyribose: Deoxyribose is a type of sugar molecule and is indeed one of the components of a nucleotide. It is found in DNA nucleotides.

B. Phosphate: A phosphate group is another component of a nucleotide. It connects the sugar molecule and the nitrogenous base. Therefore, phosphate is present in nucleotides.

C. Enzyme: Enzymes are proteins that act as catalysts in biochemical reactions. They are not a part of nucleotides.

D. A nitrogen base: Nitrogenous bases, also known as nitrogen bases, are an indispensable part of nucleotides. They determine the genetic code and can be either adenine (A), cytosine (C), guanine (G), thymine (T) (in DNA), or uracil (U) (in RNA). Therefore, a nitrogen base is present in nucleotides.

In summary, the components of nucleotides are deoxyribose (or ribose), phosphate, and a nitrogenous base. Therefore, options A (deoxyribose), B (phosphate), and D (a nitrogen base) are all present in nucleotides. The correct answer would be A, B, and D.