Unit 6 AP Biology Gene Expression and Regulation

Front

What is the primary source of genetic information?

Back

DNA/RNA

Answer explanation

DNA and RNA are nucleic acids. Nucleic acids are the source of genetic information for all organisms.

Front

Prokaryotic DNA is...

Back

Double stranded and circular

Answer explanation

Prokaryotes have a single circular DNA strand while eukaryotes have multiple linear DNA strands.

DNA is traditionally double stranded.

Front

Eukaryotic DNA is...

Back

Double stranded and linear

Answer explanation

Eukaryotes have multiple linear DNA strands while prokaryotes have a single circular DNA strand.

DNA is traditionally double stranded.

Front

Do both prokaryotic and eukaryotic cells have plasmids?

Back

True

Answer explanation

Although traditionally discussed in prokaryotes, plasmids have been found in eukaryotes.

Plasmids carry a minimum of one gene that is beneficial to the host but do not carry genetic information about the organism.

Front

Plasmids can provide genetic variation to prokaryotes?

Back

True

Answer explanation

Plasmids are small, extra chromosomal, double stranded, circular DNA molecule. This is additional genetic information that can provide additional genetic information thus genetic variation.

Front

In RNA, adenine pairs with...

Back

Uracil

Answer explanation

RNA has four nucleotides: adenine, cytosine, guanine, and uracil. Base pairing is Adenine with Uracil and Cytosine with Guanine.

Apples Under the Tree (A-U)

Cars in the Garage (C-G)

Front

In RNA or DNA, cytosine pairs with...

Back

Guanine

Answer explanation

There are five nucleotides: adenine, cytosine, guanine, thymine, and uracil. Base pairing is Adenine with Thymine or Uracil and Cytosine with Guanine.

Apples in the Tree (A-T)

Cars in the Garage (C-G)

Front

Purine

Back

Nitrogenous base with a double ring

Answer explanation

Nucleotides are made up of pentose sugar, nitrogenous base, and phosphate group. There are two types of nitrogenous bases: purine (double-ring) and pyrimidine (single-ring). Adenine & Guanine are Purines and Cytosine, Uracil, and Thymine are Pyrimidines.

Front

Which bases are purines?

Back

Adenine and Guanine

Answer explanation

Nucleotides are made up of pentose sugar, nitrogenous base, and phosphate group. There are two types of nitrogenous bases: purine (double-ring) and pyrimidine (single-ring). Adenine & Guanine are Purines and Cytosine, Uracil, and Thymine are Pyrimidines.

Front

Which bases are pyrimidines?

Back

Cytosine and Thymine

Answer explanation

Nucleotides are made up of pentose sugar, nitrogenous base, and phosphate group. There are two types of nitrogenous bases: purine (double-ring) and pyrimidine (single-ring). Adenine & Guanine are Purines and Cytosine, Uracil, and Thymine are Pyrimidines.