AnswersFL-2000310-Biology 1 Sem 2The Immune System

The Immune System — Unit test Answers

18 verified answers
1
Free Preview

When is the most likely time for a female to become pregnant during her menstrual cycle?

A
on the first day of her period
B
on the last day of her period
C
about a week after her period ends
D
about a week before her period begins
2
Free Preview

Stella is stressed about her upcoming midterm exams. Which glands are managing that stress during the tests?

A
reproductive and pancreas
B
thyroid and parathyroids
C
hypothalamus and pineal
D
pituitary and adrenals
3

The graph shows the changing levels of hormones during menstruation and ovulation. Which hormone has the most influence on preparing the body for pregnancy?

Question illustration
A
Luteinizing hormone promotes fertility because it spikes the most during ovulation.
B
Estradiol promotes fertility because it peaks slightly before ovulation.
C
Progesterone promotes fertility because its levels rise during ovulation and immediately after.
D
Follicle-stimulating hormone promotes fertility because it is released mostly during ovulation.
4

The picture represents gas exchange in the alveoli. Observe what is happening at location X.

Question illustration
A
It will move out of the body.
B
It will enter the blood.
C
It will be carried to cells.
D
It will undergo respiration.
5

During digestion, water is both added and removed. Which area of the digestive system removes water?

A
mouth
B
esophagus
C
liver
D
large intestine
6

sugarurinebloodsaliva

A
sugar
B
urine
C
blood
D
saliva
7

Which action is a physical change in digestion?

A
producing enzymes for nutrient absorption
B
absorbing nutrients from food
C
mashing food with teeth
D
salivating to break food into carbohydrates
8

Growth of chest hair, deepening of the voice, and muscle growth are secondary sex characteristics. Which structure or structures produce substances most likely to affect the development of these traits?

A
testes
B
ovaries
C
prostate gland
D
vulva
9

Which actions are involved in the immune response?

A
regulating hormonal and autonomous responses
B
identifying and destroying harmful substances
C
increasing and supporting the ability of red blood cells to carry oxygen
D
regulating and adjusting the skin's secretion of sweat and oil
10

Staphylococcus aureus, or staph, is a bacteria that is commonly found in the nose and on the skin of humans. While it is typically not harmful to humans, it is sometimes able to enter the body through an injury or broken skin, and get into the bloodstream. When this happens, it can cause a serious infection called sepsis. Sepsis can cause an individual to go into shock and bodily organs to stop functioning. Symptoms of sepsis include inflammation, fever or hypothermia, increased heart rate, and rapid breathing.Which immune system component initially results in the inflammation and responds quickly when Staphylococcus aureus enters the bloodstream?

Question illustration
A
complement system
B
phagocytes
C
Langerhans cells
D
B lymphocytes
11

In the heart, one ventricle pushes blood with oxygen to the cells of the body. Where does the other ventricle push the blood without oxygen?

A
to the cells
B
to the tissues
C
to the lungs
D
to the heart
12

Which is the last section of the digestive system?

A
small intestine
B
liver
C
large intestine
D
rectum
13

Maintaining a healthy lifestyle through diet and exercise is important,

A
but it has no effect on the immune system.
B
but it actually decreases the immune system.
C
but exercise is more important than diet for the immune system..
D
but no specific diet has been proven to boost the immune system.
14

What is semen?

A
an exocrine gland near the opening of the urethra
B
a structure located on the outside of the male body
C
a combination of sperm and other reproductive fluids
D
a production of fluid that gives the sperm nourishment
15

The picture represents a structure of the respiratory system.

Question illustration
A
to bring air into the body
B
to exchange oxygen with carbon dioxide
C
to carry air to the lungs
D
to release oxygen from the body
16

Look at the two images of cells.Which of the following statements best describes what can be seen in the images?

Question illustration
A
Image A represents a peptide hormone that interacts with a receptor, and image B represents a steroid hormone that interacts with the cell’s DNA.
B
Image A represents a steroid hormone that interacts with the cell’s DNA, and image B represents a peptide hormone that interacts with a receptor.
C
Image A represents an endocrine hormone that interacts with a receptor, and image B represents an exocrine hormone that interacts with the cell’s DNA.
D
Image A represents an exocrine hormone that interacts with the cell’s DNA, and image B represents an endocrine hormone that interacts with a receptor.
17

Which of the following describes a positive feedback loop?

A
When blood sugar is low, the body sends hormones that increase blood sugar.
B
When the body senses that the heart rate is very high, it secretes hormones that decrease the heart rate.
C
When someone is exercising intensely, the body sends hormones that increase oxygen supply for cellular respiration.
D
When a pregnant woman begins to go into labor, the body sends hormones that increase the intensity of the labor contractions.
18

Which is the largest gland in the body?

A
salivary gland
B
pancreas
C
lacrimal gland
D
liver

Did you find these answers helpful?

More from this Course

Quiz
18 verified answers

Unit Test

Quiz
20 verified answers

Unit Test

Quiz
20 verified answers

Unit Test