BioBeyond Exam 2027 35 Questions and Answers | Detailed
Review with Correct Solutions | Grade A+
Question 1.
Which bases pair in DNA?
In the simulation below, build the strand that is complementary to the one shown. In this
case, you are not replicating the strand but completing it.
Correct Answer: Thymine Adenine Guanine Cytosine Cytosine Thymine
Thymine Adenine Guanine Thymine
Question 2.
To continue, click on the image that you think best represents how DNA normally looks
in the cell.
Correct Answer: First image
Question 3.
Looking at the images, how many chromosomes are there in a typical human?
Correct Answer: 46
Question 4.
What do you notice about the chromosomes in both images?
Correct Answer: They come in pairs
Question 5.
Why are chromosomes a poor way to think of how DNA is normally stored?
Correct Answer: DNA only looks like this during replication
Question 6.
The top image, called a karyogram or karyotype, is from a human female, while the
bottom one is from a human male. What major difference do you notice?
Correct Answer: The male has a set of mismatched chromosomes
Question 7.
Thinking back to what you learned about genetics, what do the colored bands on the
chromosome represent?
Correct Answer: Genes
, Question 8.
What do the images pointing to each colored band represent?
Correct Answer: Phenotypes
Question 9.
From your exploration of DNA structure and biological macromolecules, what do you
recall is the function of DNA in the cell?
Correct Answer: Information storage
Question 10.
Which of the following characteristics are different between prokaryotic and eukaryotic
chromosomes?
Correct Answer: Shape
• Where is the information stored in DNA? -✓✓Base sequence
Question 11.
Looking at the image to the right, what has to be done to chromatin before the
information in it can be accessed?
Correct Answer: It has to be unwound to uncoiled DNA
Question 12.
From chromatin, two major processes are needed to prepare for DNA replication. Watch
the video at right - what processes are needed before new DNA can be made?
Correct Answer: DNA has to be uncoiled
Bonds between bases have to be broken
Question 13.
What type of bonds are broken when the strands are split apart?
Correct Answer: Hydrogen bonds
Question 14.
It's important to know the base pairing rules for DNA before proceeding. Which of the
following are valid pairings for DNA? Select all that apply
Correct Answer: A-T C-G
Question 15.
One last question: How many bases do you think can be added to the new DNA strand
each minute by the enzymes in your cells?
Review with Correct Solutions | Grade A+
Question 1.
Which bases pair in DNA?
In the simulation below, build the strand that is complementary to the one shown. In this
case, you are not replicating the strand but completing it.
Correct Answer: Thymine Adenine Guanine Cytosine Cytosine Thymine
Thymine Adenine Guanine Thymine
Question 2.
To continue, click on the image that you think best represents how DNA normally looks
in the cell.
Correct Answer: First image
Question 3.
Looking at the images, how many chromosomes are there in a typical human?
Correct Answer: 46
Question 4.
What do you notice about the chromosomes in both images?
Correct Answer: They come in pairs
Question 5.
Why are chromosomes a poor way to think of how DNA is normally stored?
Correct Answer: DNA only looks like this during replication
Question 6.
The top image, called a karyogram or karyotype, is from a human female, while the
bottom one is from a human male. What major difference do you notice?
Correct Answer: The male has a set of mismatched chromosomes
Question 7.
Thinking back to what you learned about genetics, what do the colored bands on the
chromosome represent?
Correct Answer: Genes
, Question 8.
What do the images pointing to each colored band represent?
Correct Answer: Phenotypes
Question 9.
From your exploration of DNA structure and biological macromolecules, what do you
recall is the function of DNA in the cell?
Correct Answer: Information storage
Question 10.
Which of the following characteristics are different between prokaryotic and eukaryotic
chromosomes?
Correct Answer: Shape
• Where is the information stored in DNA? -✓✓Base sequence
Question 11.
Looking at the image to the right, what has to be done to chromatin before the
information in it can be accessed?
Correct Answer: It has to be unwound to uncoiled DNA
Question 12.
From chromatin, two major processes are needed to prepare for DNA replication. Watch
the video at right - what processes are needed before new DNA can be made?
Correct Answer: DNA has to be uncoiled
Bonds between bases have to be broken
Question 13.
What type of bonds are broken when the strands are split apart?
Correct Answer: Hydrogen bonds
Question 14.
It's important to know the base pairing rules for DNA before proceeding. Which of the
following are valid pairings for DNA? Select all that apply
Correct Answer: A-T C-G
Question 15.
One last question: How many bases do you think can be added to the new DNA strand
each minute by the enzymes in your cells?
