Biology ACP Review Day 4

Biology ACP Review Day 4

Multiple Choice

Components of DNA include a phosphate backbone and base pairs connected by a:

• Hydrogen bond

• Carbon bond

• Nitrogen bond

• Phosphate bond

Multiple Choice

6A: 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

Multiple Choice

6A: A student used poster board to construct this model of a section of DNA. Which statement describes this model of DNA?

• The model is inaccurate because the base pairs are incorrect

• The model is accurate because it contains correctly paired bases

• The model is accurate because it shows each base splitting to form a double helix

• The model is inaccurate because some of the typical bases in DNA are missing

Multiple Choice

Which of the following correctly identifies the proper nitrogenous base pairing in DNA?

• A:T; G:C

• T:C; G:A

• T:U; C:G

• A:U; G:C

Multiple Choice

Which of the following statements best describes how the traits of an organism are determined by the DNA in their cells?

• DNA provides the energy needed for an organism to grow and function.

• DNA is copied into mRNA, which controls cellular functions.

• DNA codes for proteins which allow an organism to grow and function.

• DNA unzips and each strand codes for a different amino acid.

Multiple Choice

In 1952, Rosalind Franklin took an X-ray photograph that revealed the structure of DNA. James Watson and Francis Crick followed up on this discovery in 1953. They discovered that the molecule has a specific shape that can best be described as —

• a single strand containing 4 different bases that vary depending on the type of DNA

• ladder shaped, containing 5 nitrogenous bases that bond to one another

• triple stranded, with bonds between each strand holding the three strands together

• double stranded and twisted, with bases bonded to other bases which hold the strands together

Multiple Choice

The order of nitrogen bases in DNA determines:

• The genetic code

• The presence of polarity

• The presence of a hydrogen bond

• If there is a fifth nitrogen base

Multiple Choice

which shows the protein pathway in order

• DNA, Amino Acids, mRNA

• mRNA Amino Acids, DNA

• Amino Acids, DNA, mRNA

• DNA, mRNA, Amino Acids

Multiple Choice

What is the purpose of the process pictured above?

• Ensure that each cell has an exact copy of the genome

• Repair mutations to ensure the cell is not harmed

• Transcribe a gene for use in making proteins

• Bond amino acids to form polypeptide chains

Multiple Choice

6C: Part of an important cellular process involving a DNA strand is modeled above. What is the purpose of this cellular process?

• Preserving genetic information for future generations

• Deleting the information in the sequences produced from the DNA template

• Transcribing information in the DNA sequence for use by the cell

• Producing more nucleotides for the DNA sequence

Multiple Choice

The image above shows an amino acid attached to which type of molecule?

• mRNA

• rRNA

• tRNA

• Protein

Multiple Choice

Which of the following polypeptides is coded for by the following mRNA sequence?

5'-AUGGCAAGAAAA-3'

• Met, Asp, Arg, Lys

• Met, Ala, Arg, Lys

• Asp, Ser, Arg, Lys

• Val, Tyr, Stop, Lys

Multiple Choice

Genes code for (provide instructions to make) __________

• lipids

• carbphydrates

• proteins

• ATP

Multiple Choice

6D: Human bone, muscle, and nerve cells all contain the same number of chromosomes with the same complement of genes. What enables these cells to perform specialized activities?

• The ability of some cells to remove unnecessary DNA sequences

• The regulation of gene expression within each cell type

• The mutation of genes within each cell type

• The use of different methods of cell division

Multiple Choice

6D: The arctic fox inhabits northern areas of North America. The same arctic fox is shown in the drawing at different times of the year. What causes this change in fur color?

• The alleles for fur color change as the arctic fox grows older

• Gene expression for fur color is regulated by latitude

• The arctic fox has two traits for fur color that are determined at birth

• Gene expression for fur color is regulated by temperature