Why did Hershey and Chase chose to radioactively label the sulfur?
Why did Hershy and Chase choose to radioactively label the sulfur (S) in the phage’s protein coat and the phosphorus (P) in the phage’s DNA? Sulfur is only present in proteins and phosphorus is only present in DNA.
What would happen if Griffith took some of the bacteria from Experiment 4 in Figure 12 11 grew them on culture plates killed them with heat and mixed them with harmless bacteria How could he test this hypothesis?
What would happen if Griffith took some of the bacteria from Experiment 4 in Figure 12-11, grew them on culture plates, killed them with heat, and mixed them with harmless bacteria? The harmless bacteria would be transformed into disease-causing bacteria.
How did Griffith arrive at the conclusion that a gene from one kind of bacteria transformed another kind of bacteria?
How did Griffith arrive at the conclusion that a gene from one kind of bacteria transformed another kind of bacteria? Griffith killed disease-causing bacteria and mixed them with live, harmless bacteria. The harmless bacteria transformed into disease-causing bacteria.
Which of these would be found in a DNA nucleotide?
A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base. The bases used in DNA are adenine (A), cytosine (C), guanine (G), and thymine (T).
Which of the following is a nucleotide found in DNA group of answer choices?
Deoxyribose, phosphate group, and cytosine are nucleotides found in DNA
What charge does the DNA backbone have?
The phosphate backbone of DNA is negatively charged due to the bonds created between the phosphorous atoms and the oxygen atoms. Each phosphate group contains one negatively charged oxygen atom, therefore the entire strand of DNA is negatively charged due to repeated phosphate groups.
Does DNA have a negative or positive charge?
DNA is negatively charged, therefore, when an electric current is applied to the gel, DNA will migrate towards the positively charged electrode. Shorter strands of DNA move more quickly through the gel than longer strands resulting in the fragments being arranged in order of size