AnswersFL-2000310-Biology 1Unit Test

Unit Test — Unit test Answers

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In the 1950s, the structure of DNA was discovered by using models and x-ray chromatography. Currently, science has used advanced technology to completely map out the genes in a human’s body. What would be the best advantage of using this information?

A
gene therapy to correct defective genes that cause diseases
B
gene therapy to remove bacteria from the soil
C
more communicable diseases
D
fewer communicable diseases
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Barry was on an antibiotic, but after he took all of it, he had a rash and the doctor prescribed him an antihistamine. Which most likely describes what happened to Barry?

A
He had a viral infection, but then developed an allergy to the antibiotic.
B
He had a parasite infection, but then it developed into a bacterial infection.
C
He had a fungal infection, but then it developed into a viral infection.
D
He had a bacterial infection, but then developed an allergy to the antibiotic.
23

During a third-trimester ultrasound, what would a doctor expect to observe in a fetus?

A
initial development of organs
B
response to noise and light
C
presence of a tail-like structure
D
the first heartbeat
24

The graph shows the changing levels of hormones during menstruation and ovulation. In general, what happens to the hormone levels between days 21 and 27, just prior to menstruation if the egg was not fertilized?

Question illustration
A
Hormone levels generally decrease.
B
Hormone levels generally rise.
C
Hormone levels remain the same.
D
Hormone levels go in two different directions.
25

Which best describes the testes?

A
They produce hormones and sperm.
B
They are the male copulatory organ.
C
They give sperm nourishment and motility.
D
They are the pouch-like skin that protects the scrotum.

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