Biology Final Practice Test 4

1.

1 point

A difference between steroid hormones and nonsteroid hormones is that steroid hormones contain

protein

sugar

RNA

cholesterol

2.

1 point

Unlike nonsteroid hormones, steroid hormones

have no target cells

bind to receptors inside the target cell

remain outside the target cell

are made of proteins

3.

1 point

What do ligaments hold together in a joint?

It holds bones together at the joints

It acts as a cushion between bones and protects them as they move against each other

It contains a fluid that enables the surfaces of bones to slide over each other smoothly at the joints

It causes bones to fuse together as they grow

4.

1 point

The sudden death of brain cells when their blood supply is interrupted is called

hypertension

a stroke

atherosclerosis

a heart attack

5.

1 point

Babies usually cry when they first meet the outside world. In what way is this crying helpful?

It is a signal to the mother that her labor is over

It rids the baby's lungs of fluid

It lets everyone know the baby is hungry

It shows that the baby can show emotion

6.

1 point

Which hormones stimulate the gonads to mature?

testosterone and progesterone

androgens

estrogens

FSH and LH

7.

1 point

Swollen lymph nodes might indicate

an infection

high blood pressure

varicose veins

an irregular heartbeat

8.

1 point

Vaccinations and other public health measures had eliminated which disease globally by 1980?

AIDS

smallpox

Ebola

tuberculosis

9.

1 point

Which of the following is NOT a potential sign of skin cancer?

a mole with an irregular border

a sudden change in a mole's appearance

a sore that does not heal

a pimple that lasts more than 2 days

10.

1 point

Uncontrolled hypertension can lead to

heart attack

stroke

kidney damge

all of the above

11.

1 point

Which type of blood vessel carries blood away from the heart?

veins

arteries

capillaries

lymph nodes

12.

1 point

Because there is more oxygen in an alveolus than in the blood around it, oxygen diffuses from

capillaries into the veins

alveoli into capillaries

arteries into the capillaries

veins into the alveolus

13.

1 point

What do human hair and a parakeet's feathers have in common?

They both contain keratin

They both contain fat cells

They both contain cartilage

They are both a form of modified bone

14.

1 point

Which of these is NOT a function of your skin?

keeps your body cool when you exercise

releases waste products like urea and salts

helps prevent pathogens from entering your body

holds the bones of the skeleton together

15.

1 point

How does movement of the rib cage change air pressure in the chest cavity?

When the rib cage raises, an increase in air pressure in the chest cavity causes air to rush into the lungs

When the rib cage raises, a decrease in air pressure in the chest cavity causes air to rush into the lungs

When the rib cage relaxes, an increase in air pressure in the chest cavity causes air to rush into the lungs

When the rib cage relaxes, a decrease in air pressure in the chest cavity causes air to rush out of the lungs

16.

1 point

Proteins that tag pathogens for destruction by immune cells are called

histamines

antibodies

antigens

interferons

17.

1 point

A internal wooden frame is to a house as______to a body.

a muscular system is

a skeleton is

blood vessels are

an organ is

18.

1 point

Puberty usually begins between the age of

5 and 8

20 and 25

16 and 19

9 and 15

19.

1 point

How can you prevent the spread of Lyme disease?

Avoid sexual contact

Wash your hands frequently

Cover your mouth with a tissue when you cough

Avoid tall grasses and wooded areas

20.

1 point

Which of the following are public health measures that have helped fight disease?

regulating food supplies

monitoring water supplies

promoting vaccines

all of the above

21.

1 point

What body system has final control over breathing?

nervous system

lymphatic system

circulatory system

respiratory system