OBJECTIVE LIFE SCIENCE
BIOTECHNOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Gene
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Hair
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DNA
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Cells
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Detailed explanation-1: -A DNA molecule consists of two long polynucleotide chains composed of four types of nucleotide subunits. Each of these chains is known as a DNA chain, or a DNA strand.
Detailed explanation-2: -DNA has two strands that twist into the shape of a spiral ladder called a helix. DNA is made up of four building blocks called nucleotides: adenine (A), thymine (T), guanine (G), and cytosine (C).
Detailed explanation-3: -The two strands of DNA in a double helix are held together by pairing between the nitrogenous bases in the nucleotides of each strand. The nitrogenous base of a DNA nucleotide can be one of four different molecules: adenine (A), guanine (G), thymine (T), and cytosine (C).
Detailed explanation-4: -Most genes contain the information needed to make functional molecules called proteins. (A few genes produce regulatory molecules that help the cell assemble proteins.)