Which of the following enzymes is used to make radioactively labeled dna? a. dna nuclease b. dna phosphatase c. dna polymerase d. dna ligase

It would be C, DNA polymerase.

Explanation:

Got it wrong on APEX. :(

C. DNA polymerase

Explanation:

DNA polymerase is the enzyme that makes new DNA strands using existing DNA strand as a template. Use of radioactive deoxyribonucleotides as raw material for DNA synthesis makes DNA polymerase to use these radioactively labeled dNTPs to make new DNA strands.

Hence, DNA polymerase enzyme can make radioactively labeled DNA by using radioactive deoxyribonucleotides as raw material.  

a. seed plant structure. 1. the three main plant organs are roots, stems, and leaves. a fourth kind of tissue, meristematic tissue, is responsible for plant growth. meristematic tissue is the only plant tissue that produces new cells by mitosis. plants can lose water out of their leaves as they exchange gases with the air

explanation:

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: