Exam #4 (Practice Exam)

In the human male, sperm is produced in the

Testes

Which of the following houses the growing and developing fetus?

Uterus

Where does the fertilization of the egg occur?

Uterine Tubes

In the human female, the typical uterine cycle is an average of:

28 days

Secondary sexual characteristics in the male are directly maintained by the hormone:

Testosterone

Secondary sexual characteristic in the female are directly maintained by which hormones?

Estrogen

The lining of the uterus that is discharged during the menstrual phase is the:

Endometrium

After an egg is released from the ovary it travels where next?

Uterine Tube

What provides oxygen, carbon dioxide and nutrients to the developing fetus?

Placenta

After childbirth a mother may nurse (breast feed) the baby. What is the first substance the baby received that is described as thin, yellow, milky fluid rich in protein and antibodies?

Colostrum

An individual’s physical characteristics or appearance is known as their:

Phenotype

The letters used to describe the genes passed on to offspring (children), such as FF, Ff and ff are called the:

Genotype

The ability to roll the edges of the tongue upward in a U-shape is inherited as a dominant trait. Which of the following genotypes would produce an individual that can roll their tongue?

TT and Tt

In humans, widow's peak (W) is dominant over straight hairline (w). If a heterozygous male (Ww) marries a female with a straight hairline (ww), what percent of their children can be expected to have widow's peak?

50%

In the following pedigree, what does the colored circle indicate?

An affected daughter

The hereditary material found in all cells is:

DNA

The enzyme that is used to join DNA nucleotides (A,T,C,G) together is:

DNA Polymerase

The function of transfer RNA (tRNA) is to:

Carry amino acids to mRNA (and Ribosomes)

A sequence of mRNA that is removed (because it is not needed) during transcription is a(n):

Intron

What is the name of process that makes proteins?

Translation

How many bases on mRNA equal one codon?

3

In DNA which nucleotide bases bond with each other?

Both C-G and A-T

In RNA which nucleotide bases bond with each other?

U-A

Trisomy 21 is called:

Downs Syndrome

When the ovary releases and egg it is called:

Ovulation

Which of the following can be caused by problems with chromosomes such as receiving an extra copy of a chromosome?

All of the above

What is A pointing to (round objects)?

Amino acids

What is B pointing to (chain of round objects)?

Polypeptide chain

What is C pointing to?

mRNA with codons

What is D pointing to?

Ribosome

What is E pointing to?

tRNA with anticodons

Who is more impacted (has the disease) by the disease shown?

Males

The pedigree shows the distribution of an X-linked disease.

True

Females are much more likely to be carrier than actually have the disease.

True

Widow's peak (W) is dominant over straight hairline (w). If a homozygous (for widows peak) male (WW) marries a female with a straight hairline (ww), what percent of their \n children can be expected to have widow's peak?

100% (Ww)

What if both parents were heterozygous for widow’s peak (Ww), what percent of children would likely have widows peak?

75%

What amino acids do the following codons code for?

AUG: Start/Methionine \n CAA: Glutamine \n AAG: Lysine \n UAG: Stop \n GGC: Glycine

The police are investigating a crime. They found DNA at the crime scene and ran it through gel electrophoresis to determine to examine the DNA fragments. The police had two suspects in connection to the crime and also ran their DNA. Which of the suspects do you think the police will charge with the crime?

Suspect B

A sample of DNA was taken from hair and sequenced, as was the DNA of the victim and 3 suspects. Who’s DNA matches the sample?

Suspect 3

Of the following, which are 6 defects or diseases that can result when there are problems with chromosome 19. (7)

Colorectal cancer, Muscular dystrophy, Deafness, Atherosclerosis (hardening of arteries), Alzheimer’s, Hemolytic anemia, Acute myeloid leukemia, Insulin resistant diabetes mellitus