Bio study 4

Front

What links the pairs of complementary bases in a DNA double helix?

Back

Hydrogen bonds link the pairs of complementary bases in a DNA double helix.

Front

What is the relationship between the amounts of adenine (A) and guanine (G) in a DNA molecule?

Back

In a DNA molecule, the amount of adenine (A) equals the amount of thymine (T), and the amount of guanine (G) equals the amount of cytosine (C). This is known as Chargaff's rules.

Front

What is a key characteristic of the lytic cycle in viral replication?

Back

In the lytic cycle, large numbers of phages can be released at a time after the host cell is lysed.

Front

Which statement about the lytic and lysogenic cycles is false?

Back

An environmental stressor can cause the phage to initiate the lysogenic cycle (this statement is true; the false statement is that cell lysis only occurs in the lytic cycle).

Front

What is the function of DNA polymerase III in E. coli replication?

Back

DNA polymerase III adds nucleotides to the 3' end of a growing DNA strand during replication.

Front

What are the four types of nucleotides found in DNA?

Back

The four types of nucleotides in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G).

Front

What is the role of hydrogen bonds in DNA structure?

Back

Hydrogen bonds hold the two strands of the DNA double helix together by linking complementary base pairs.

Front

What occurs during the lysogenic cycle of viral replication?

Back

During the lysogenic cycle, the viral DNA is integrated into the host genome and can remain dormant until triggered to enter the lytic cycle.

Front

What is Chargaff's rule?

Back

Chargaff's rule states that in a DNA molecule, the amount of adenine (A) equals the amount of thymine (T), and the amount of guanine (G) equals the amount of cytosine (C).

Front

What is the difference between the lytic and lysogenic cycles?

Back

The lytic cycle results in the destruction of the host cell and the release of new viral particles, while the lysogenic cycle involves the integration of viral DNA into the host genome without immediate destruction of the host.