THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
It allows the strands to separate for replication so that each one is a template for the new strand.
|
|
|
Production of a protein can occur using both sides of the DNA molecule at the same time.
|
|
|
Ribosomes are able to access the strand for protein production.
|
|
|
It allows the crossing over of genes during meiosis.
|
Detailed explanation-1: -However, weaker hydrogen bonds hold together the two strands of the DNA double helix. These weak bonds keep the DNA stable, but also allow it to be opened up for copying and use by the cell.
Detailed explanation-2: -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. Hydrogen bonds between the base portions of the nucleotides hold the two chains together (Figure 4-3).
Detailed explanation-3: -Answer and Explanation: The answer is B: hydrogen bonds are easier to break allowing for DNA copying. Hydrogen bonds formed between complementary base pairs on opposite DNA strands form the “rungs on a ladder” portion of DNA’s double-helical structure.
Detailed explanation-4: -The role of the hydrogen bonds, which have sometimes been seen as crucial to holding DNA helixes together, appears to be more to do with sorting the base pairs, so that they link together in the correct sequence. The discovery is crucial for understanding DNA’s relationship with its environment.