Practice Flashcard 2.1 - DNA, Replication, Cell Cycle

Front

You are doing DNA analysis on a new species and find the organisms contain 20 percent adenine [A]. How much cytosine [C] would the new organism have and why?

Back

It would have 30 percent cytosine because cytosine and guanine would pair together based on complementary base pairing

Front

What happens to the chromosome number of daughter cells if they go through mitosis without first going through S phase due to a mutation?

Back

The chromosome number of the daughter cell would be half that of the parent cells.

Front

A viral core may contain either DNA or RNA. To identify which nucleic acid [DNA or RNA] is present, a biochemist could analyze the virus for the presence of: phosphate groups, ribose sugar, adenine, cytosine.

Back

ribose sugar.

Front

Some chemical weapons like mustard gas remove guanine (G) from DNA. For embryos developing in the womb, exposure can result in serious deformities because guanine…

Back

is part of the genetic code in DNA.

Front

Based on the cell micrograph [picture], which phase of mitosis would be next to occur? Options: Prophase, Metaphase, Anaphase, Telophase

Back

Telophase

Front

What must first happen to the DNA molecule pictured before it can be replicated [copied]?

Back

The DNA must unwind and unzip.

Front

Which cell cycle stage most closely matches the cell pictured? Options: Prophase, Metaphase, Anaphase, Telophase

Back

Telophase

Front

Which answer shows the order of steps in mitosis?

Back

Prophase, Metaphase, Anaphase, Telophase

Front

During mitosis, when does the nuclear envelope begin to disappear?

Back

In prophase.

Front

A template strand of DNA is 3’ TACCGATTGCA 5’. What is the complementary DNA strand that is created from this template during replication?

Back

5’ ATGGCTAACGT 3’