OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Protein
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Phosphate
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Carbohydrate
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DNA
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Detailed explanation-1: -Final answer: Chromosomes are made up of both DNA and proteins.
Detailed explanation-2: -One chromosome is made of two chromatids and each chromatid is a DNA molecule. Each DNA molecule is a double helix. So two DNA molecules per chromosome.
Detailed explanation-3: -One molecule of DNA and one protein make up one chromosome. Chromosomes are different sizes, and proteins called histones allow them to pack up small enough to fit in a nucleus.
Detailed explanation-4: -DNA is made up of four building blocks called nucleotides: adenine (A), thymine (T), guanine (G), and cytosine (C). The nucleotides attach to each other (A with T, and G with C) to form chemical bonds called base pairs, which connect the two DNA strands.