Biology - Exam 3 - Practice Test (2/3)

Front 1

Most chemical digestion occurs in the:
A) esophagus.
B) stomach.
C) mouth.
D) large intestine.
E) small intestine.

Back 1

small intestine.

Front 2

The function of the epiglottis is to:
A) cover fish gills.
B) close insect trachea.
C) prevent food from entering the airway.
D) produce the alveolar surfactant.
E) be part of the vocal cords.

Back 2

prevent food from entering the airway.

Front 3

Minerals required for bone formation include:
A) zinc and potassium.
B) calcium and phosphorus.
C) iron and sodium.
D) calcium and sodium.
E) calcium and zinc.

Back 3

calcium and phosphorus.

Front 4

To control the movement of gases, land plants developed:
A) lignan.
B) a cuticle.
C) stomata.
D) flowers.
E) vascular tissue.

Back 4

stomata.

Front 5

Which of these immune cells are produced by the bone marrow?
A) T cells
B) B cells
C) both B and T cells
D) all white and red blood cells

Back 5

both B and T cells

Front 6

Which of the following is the gas–exchange portion of the human lung?
A) bronchi
B) larynx
C) pharynx
D) bronchioles
E) alveoli

Back 6

alveoli

Front 7

________ is a waste product of cellular respiration.
A) Nitrogen
B) ATP
C) Carbon dioxide
D) Glucose
E) Oxygen

Back 7

Carbon dioxide

Front 8

During inhalation, the diaphragm:
A) contracts and is flattened.
B) relaxes and is dome–shaped.
C) contracts and is dome–shaped.
D) relaxes and is flattened.

Back 8

contracts and is flattened.

Front 9

In an alternation of generations life cycle, what alternates?
A) flowers and spores
B) reproductive plants and vegetative plants
C) sporophytes and gametophytes
D) eggs and sperm
E) male plants and female plants

Back 9

sporophytes and gametophytes

Front 10

The respiratory center is located in the:
A) cortex.
B) hypothalamus.
C) spinal cord.
D) medulla.
E) midbrain.

Back 10

medulla.

Front 11

Which of the following are the first line of defense against microbial attack?
A) external barriers
B) nonspecific responses
C) mucous and ciliary actions
D) immune responses

Back 11

external barriers

Front 12

The vocal cords are located in the:
A) bronchi.
B) larynx.
C) trachea.
D) epiglottis.
E) pharynx.

Back 12

larynx.

Front 13

Most of the oxygen in the blood is:
A) in the white blood cells.
B) in the plasma.
C) carried by leukocytes.
D) combined with carbon dioxide.
E) bound to hemoglobin.

Back 13

bound to hemoglobin.

Front 14

The human heart contains cells that do all of the following EXCEPT:
A) generate electrical signals.
B) create new red blood cells.
C) contract.
D) produce a hormone.

Back 14

create new red blood cells.

Front 15

Which of the following weather conditions would you expect to have the greatest positive impact on the sexual reproduction of ferns and mosses?
A) below average temperatures for a few days
B) excessively dry for several days
C) excessively wet and rainy
D) above average temperatures for several days
E) the shade of a forest

Back 15

excessively wet and rainy

Front 16

Which of these proteins identify a cell as a target cell for a hormone?
A) receptors
B) neurotransmitters
C) neuromodulators
D) response proteins
E) cyclic AMP

Back 16

receptors

Front 17

The kinds of peripheral neurons that are responsible for involuntary responses to extreme danger or stress are:
A) the sensory.
B) the sympathetic.
C) the parasympathetic.
D) the somatic.
E) currently unidentified.

Back 17

the sympathetic.

Front 18

Which of the following is "male" in the life cycle of angiosperms?
A) endosperm
B) megaspore mother cell
C) seed cone
D) pollen grain
E) embryo sac

Back 18

pollen grain

Front 19

A gametophyte is:
A) diploid.
B) unable to survive.
C) tetraploid.
D) triploid.
E) haploid.

Back 19

haploid.

Front 20

All bacteria, viruses, and protists, as well as some fungi, are:
A) causes of cancer.
B) plasma cells.
C) microbes.
D) pathogens.
E) antibodies.

Back 20

microbes.

Front 21

Carbon monoxide is poisonous because it:
A) prevents hemoglobin from carrying oxygen.
B) is toxic to the brain.
C) causes breathing to stop.
D) prevents the SA node from functioning.
E) slows the cilia in the respiratory tract.

Back 21

prevents hemoglobin from carrying oxygen.

Front 22

All of the following are components of all circulatory systems EXCEPT:
A) vessels.
B) blood.
C) heart.
D) lymph nodes.

Back 22

lymph nodes.

Front 23

The sporophyte produces:
A) gametes by meiosis.
B) gametes by mitosis, followed by meiosis.
C) spores by meiosis.
D) gametes by mitosis.
E) spores by mitosis.

Back 23

spores by meiosis.

Front 24

Taking a nap after meals is probably a good idea because it allows the body to digest the food as a result of the activities of the ________ nervous system.
A) central
B) sympathetic
C) parasympathetic
D) somatic
E) sensory

Back 24

parasympathetic

Front 25

If you chew on a piece of bread long enough, it will begin to taste sweet because:
A) disaccharidases are forming glucose.
B) lipases are forming fatty acids.
C) proteases are forming amino acids.
D) maltase is breaking down maltose.
E) amylase is breaking down starches into disaccharides.

Back 25

amylase is breaking down starches into disaccharides.

Front 26

Which of these groups is the most concentrated energy source?
A) proteins
B) lipids
C) minerals
D) vitamins
E) carbohydrates

Back 26

lipids

Front 27

What structure prevents swallowed material from passing into the larynx?
A) glottis
B) tongue
C) epiglottis
D) pyloris
E) pharynx

Back 27

epiglottis

Front 28

Which of the following are gymnosperms?
A) conifers, ginkgos, and ferns
B) cycads, conifers, and ferns
C) cycads, ginkgos, and conifers
D) cycads, ginkgos, and ferns
E) ginkgos, conifers, and horsetails

Back 28

cycads, ginkgos, and conifers

Front 29

The amount of energy necessary to raise the temperature of 1 gram of water by 1°C is called:
A) the RDA.
B) a Calorie.
C) the basal metabolism rate.
D) a calorie.
E) the basal energy quotient.

Back 29

a calorie.

Front 30

A fertilized egg is a:
A) zygote.
B) gamete.
C) sporophyte.
D) gametophyte.
E) spore.

Back 30

zygote.

Front 31

Pollen and seeds evolved in response to:
A) moist environments.
B) seed predators.
C) flower evolution.
D) dry land environments.
E) an increase in pollinators.

Back 31

dry land environments.

Front 32

The aorta:
A) is a major artery.
B) connects the right and left ventricles of the heart.
C) is a major vein.
D) contains blood with low pressure.

Back 32

is a major artery.