Which type of junctions must there be between cells to form a barrier?

Question

Question 1 of 32

0.0/ 3.0 Points

Which of the following does not utilize active transport?

A.movement of oxygen from the lungs into the blood

B.concentrating iodine ions in the thyroid gland

C.absorbing sugar in the gut

D.water homeostasis in the kidneys

E.movement of sodium and potassium in nerve cells

Question 2 of 32

3.0/ 3.0 Points

Which type of junctions must there be between cells to form a barrier?

A.adhesion junctions

B.gap junctions

C.tight junctions

D.channel junctions

E.free junctions

Question 3 of 32

0.0/ 3.0 Points

The assisted transport of a molecule across the cell membrane without an expenditure of energy is known as what?

A.diffusion

B.facilitated transport

C.active transport

D.osmosis

E.crenation

Question 4 of 32

3.0/ 3.0 Points

During a hurricane, salt water invades fresh water marshes causing many of the plants to die. The plants are killed because the salt water solution is __________________ to the plants, drawing water from their cells.

A.isotonic

B.hypotonic

C.mesotonic

D.oligotonic

E.hypertonic

Question 5 of 32

0.0/ 3.0 Points

What is the maximum number of ATP molecules produced during aerobic respiration?

A.38

B.36

C.32

D.2

E.4

Question 6 of 32

3.0/ 3.0 Points

How large is a nuclear pore in the nuclear envelope?

A.larger than a ribosome

B.larger than the Golgi apparatus

C.larger than the endoplasmic reticulum

D.smaller than a ribosome

E.smaller than a protein

Question 7 of 32

3.0/ 3.0 Points

Often when a person is admitted to the hospital, an intravenous solution of normal saline is begun. Since this does not harm the patient, what is the tonicity of normal saline compared to your blood?

A.hypertonic

B.isotonic

C.hypotonic

D.pretonic

E.osmotonic

Question 8 of 32

3.0/ 3.0 Points

Sheree observed an amoeba feeding by engulfing the prey with its false feet or pseudopods. This process is known as

A.pinocytosis.

B.phagocytosis.

C.exocytosis.

D.facilitated transport.

E.osmosis.

Question 9 of 32

0.0/ 3.0 Points

Angela would like to look at living algae from pond water. What type of equipment should she use?

A.compound light microscope

B.transmission electron microscope

C.scanning electron microscope

D.magnifying glass

E.her naked eye

Question 10 of 32

3.0/ 3.0 Points

If a cell lacked ribosomes, it would not be able to

A.form a spindle apparatus.

B.synthesize proteins.

C.respire oxidatively.

D.break down fats.

E.produce ATP.

Question 11 of 32

3.0/ 3.0 Points

What components make up the ribosomes?

A.proteins and rRNA

B.proteins and DNA

C.lipids and rRNA

D.carbohydrates and rRNA

E.proteins and DNA

Question 12 of 32

0.0/ 3.0 Points

Which type of gland can become blocked and form a “blackhead?”

A.sudoriferous

B.sweat

C.endocrine

D.sebaceous

E.compound

Question 13 of 32

0.0/ 3.0 Points

________ glands are considered ductless glands and ______ glands contain ducts.

A.Exocrine, endocrine

B.Transitional, exocrine

C.Transitional, endocrine

D.Endocrine, exocrine

E.Sudoriferous, transitional

Question 14 of 32

3.0/ 3.0 Points

Which of the following is responsible for the waterproofing of skin?

A.mucus

B.keratin

C.hyaline cartilage

D.sweat

E.wax

Question 15 of 32

3.0/ 3.0 Points

Which of the following body parts is surrounded by a mucous membrane?

A.the ovaries

B.the heart

C.the cavities of freely movable joints

D.tubes of the digestive system

E.the abdominal cavity

Question 16 of 32

3.0/ 3.0 Points

Jacob looked up and saw the car. This information was relayed to him via what type of tissue?

A.Epithelial

B.Connective

C.Muscular

D.Nervous

E.Vascular

Question 17 of 32

0.0/ 3.0 Points

Stretch marks are the result of tears in the integumentary layer that contains fibrous connective tissue, elastin, and collagen. What is this region of the integument called?

A.subcutaneous layer

B.Langerhan layer

C.epidermis

D.hypodermis

E.dermis

Question 18 of 32

0.0/ 3.0 Points

The best description for the two components of blood are

A.red blood cells and plasma.

B.platelets and plasma.

C.white blood cells and red blood cells.

D.formed elements and plasma.

E.formed elements and platelets.

Question 19 of 32

3.0/ 3.0 Points

The body’s ability to maintain a relative constancy of its internal environment is called

A.homeostasis.

B.development.

C.homogeneous.

D.coordination.

E.feedback.

Question 20 of 32

3.0/ 3.0 Points

What type of tissue receives sensory input, integrates data, and conducts impulses?

A.Epithelial tissue

B.Connective tissue

C.Muscular tissue

D.Nervous tissue

E.Vascular tissue

Question 21 of 32

3.0/ 3.0 Points

Which type of tissue covers body surfaces and lines body cavities?

A.epithelial tissue

B.connective tissue

C.muscular tissue

D.nervous tissue

E.vascular tissue

Question 22 of 32

0.0/ 3.0 Points

When you put your hand on a hot stove, ____ receive signals from the sensory receptors or other neurons and ______ conduct nerve impulses.

A.astrocytes, oligodendrocytes

B.axons, dendrites

C.astrocytes, dendrites

D.dendrites, axons

E.dendrites, astrocytes

Question 23 of 32

3.0/ 3.0 Points

Which of the following is a substance that dissolves in water to release hydrogen ions?

A.base

B.acid

C.protein buffer

D.pH

Question 24 of 32

0.0/ 3.0 Points

Too much carbon dioxide in the blood can be the result of _______.

A.fever

B.anxiety

C.emphysema

D.hyperventilation

Question 25 of 32

0.0/ 3.0 Points

Which of the following systems can compensate for pH changes in the body the fastest?

A.renal system

B.respiratory system

C.digestive system

D.endocrine system

Question 26 of 32

3.0/ 3.0 Points

Hypoventilation results in

A.spasms of the hands and feet.

B.an accumulation of CO2 in the blood.

C.lightheadedness.

D.numbness around the lips.

Question 27 of 32

0.0/ 3.0 Points

Acidosis is characterized by a blood pH _______.

A.less than 7.45

B.greater than 7.45

C.greater than 7.00

D.less than 7.35

Question 28 of 32

3.0/ 3.0 Points

What is the normal range for the partial pressure of carbon dioxide in the blood?

A.55-65 mm Hg

B.15-25 mmHg

C.35-45 mm Hg

D.7.35-7.45 mm Hg

Question 29 of 32

0.0/ 3.0 Points

Which of the following is true about “rebreathing”?

A.PCO2 will typically decrease.

B.Anxiety is respiratory problem that can mimic the effects of rebreathing.

C.it will cause the body to go into a state of alkalosis.

D.pH typically will decrease.

Please review Lab Exercise 10, Activity 2.

Part 4 of 5 – 5.0/ 8.0 Points Answer the following question in your own words without using any resources. Your answer should be written in complete sentences using correct grammar, spelling, and terminology.

Question 30 of 32

4.0/ 4.0 Points

Define the term “buffer.”

Question 31 of 32

1.0/ 4.0 Points

 

Briefly explain how the renal system regulates acid-base balance.