AnswersNY-Life Science BiologyTerm 2 HillcrestLab: Disease Spread

Lab: Disease Spread — Unit test Answers

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Lice are small wingless insects that make their home in human hair and feed on very small amounts of blood from the scalp. They can be transferred from person to person and through the use of contaminated items such as brushes or pillows. Which type of disease is lice infestation?

A
communicable
B
noncommunicable
C
genetic
D
lifestyle
2
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Asbestosis is a lung disease that is caused by inhaling asbestos, a mineral that was once used as insulation and fire retardant in building materials. Which best describes abestosis?

A
It disproves spontaneous generation.
B
It offers supporting evidence regarding miasma.
C
Its transmission cannot be studied using the germ theory of disease.
D
Its transmission can be studied using the germ theory of disease.
3

What would cause antibodies to attack the cells of the body?

A
The cells support bacterial growth.
B
The cells are worn out and need to be replaced.
C
The antibodies mistakenly identify the cells as foreign material.
D
The red blood cells are malfunctioning.
4

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.
5

What does the immune system protect the body against?

A
changes of the internal body temperature
B
changes in the temperature of environment
C
changes caused by harmful pathogens
D
changes in the pH of the blood
6

Which of the following describes the epididymis?

A
a tube that transports sperm to the urethra
B
a vesicle that produces fluid and gives sperm nourishment and motility
C
a gland that contributes fluid to semen
D
a tube that stores and develops sperm cells from the testes
7

Which is an immune response?

A
The iris of the eye narrows when the eyes are exposed to bright light.
B
Langerhans cells transport harmful substances to white blood cells.
C
Muscles under the skin contract rapidly to adjust the body's internal temperature.
D
T cells signal B cells to adjust the pH of the blood.
8

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
9

Leukopenia is a condition characterized by a decrease in white blood cells. What effect does leukopenia have on the body's ability to fight infection?

A
Leukopenia increases the body's ability to fight infection.
B
Leukopenia decreases the body's ability to fight infection.
C
Leukopenia has no effect on the body's ability to fight infection.
D
Leukopenia increases the body's ability to fight infection at certain times and decreases it at other times.
10

Which causes a drop in female hormone levels?

A
the onset of the menstrual flow
B
the release of an egg from the ovary
C
the thickening of the uterine wall
D
the failure of an egg to be fertilized
11

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.
12

A person who has a weakened immune system may not be able to fight against infection because

A
pathogens may enter the body and cause illness.
B
phagocytes may enter the body and cause illness.
C
normal cells crowd out unhealthy cells.
D
antibodies production is increased.
13

Which statement about the specific immune response is FALSE?

A
Each T or B cell has antigen receptors for only one specific antigen.
B
T and B cells recognize antigens by using antibodies bound to their surface membranes.
C
Unique antigen receptors are created by genetic recombination.
D
Antigens must be presented by an MHC molecule for T and B cells to recognize them.
E
All cells express MHC-I molecules, but only antigen-presenting cells express MHC-II molecules.
14

Which best describes the vulva?

A
It is a muscular organ where a developing offspring grows.
B
It is the external part of the female genital organs.
C
It is the birth canal of the female reproductive system.
D
It is the organ in the female that carries the egg to the uterus.
15

Which best describes the uterus?

A
It is a muscular organ where a developing offspring grows.
B
It is the external part of the female genital organs.
C
It is the birth canal of the female reproductive system.
D
It is the organ in the female that carries the egg to the uterus.
16

Which factors most influence whether a person will develop Alzheimer's disease?

A
the person's environment and social interaction
B
the person's genetics and age
C
the person's gender and salt intake
D
the person's salt intake and stress level
17

Red blood cells have _________ and generate energy ________.

A
mitochondria; anaerobically
B
no mitochondria; anaerobically
C
mitochondria; aerobically
D
no mitochondria; aerobically
E
None of the above
18

Which organ or organs produce estrogen and progesterone?

A
testes
B
ovaries
C
uterus
D
epididymis
19

Which organ is the male copulatory organ?

A
vas deferens
B
testes
C
scrotum
D
penis
20

In which structure do sperm cells develop to maturity?

A
epididymis
B
scrotum
C
testes
D
vas deferens

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