2nd Semester Biology Final Exam Practice 2023

DNA is an example of which of the carbon based molecules?

• Lipids

• Nucleic Acids

• Proteins

• Carbohydrtaes

Which part of a DNA molecule is responsible for the direct coding of specific traits in an organism?

• The number of hydrogen bonds that hold the strands of DNA together

• The number of carbons in the DNA molecule.

• The sequence of nucleotide bases in the DNA molecule

• The sequences of phosphates along each DNA strand

Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG

• ATG TGA CAG
• TAC ACT GTC
• GTA AGT GAC
• CAT TCA CTG

Guanine bonds with ______________.

• Adenine
• Guanine
• Cytosine
• Thymine

The following picture must be

• DNA because it's double stranded
• RNA because it's single stranded
• DNA because it's single stranded
• RNA because it's double stranded

The sides of DNA contain

• Sugar and phosphate

• Sugar and base pairs

• Phosphate and base pairs

• DNA does not have any sides

Adenine bonds with ________ in DNA

• Guanine
• Thymine
• Cytosine
• Adenine

What is the difference between DNA and RNA in terms of bases?

• RNA contains uracil in place of thymine
• RNA contains uracil in place of adenine
• RNA contains uracil in place of guanine
• RNA contains uracil in place of  cytosine

Which type of RNA takes the instructions from the nucleus to the cytoplasm?

• mRNA
• tRNA
• rRNA
• RNA polymerase

What is the template for mRNA?

• DNA
• tRNA
• rRNA
• proteins