Which of the following is NOT epithelial tissue?

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Multiple Choice Questions on Cells Tissues and Organs Questions

Question 1 of 5

A. the epidermis B. glandular tissue C. the internal lining of blood vessels D. the dermis

Correct Answer: D

Rationale: The dermis contains some of all four types of tissue.

Question 2 of 5

What is the difference between "loose" connective tissue(CT) and "dense" connective tissue?

A. Fibres occupy most of the volume in dense CT B. Dense CT includes cartilage, loose CT does not. C. Loose CT has a good blood supply while dense CT does not. D. Loose CT has no fibres(and dense CT does).

Correct Answer: A

Rationale: The preponderance of fibres is what makes the CT "dense". Cartilage is classified as supportive CT.

Question 3 of 5

The process of "diffusion" through a membrane may be described by which of the following?

A. the movement of ions and molecules away from regions where they are in high concentration towards regions where they are in lower concentration. B. the use of energy from ATP to move ions and small molecules into regions where they are in lower concentration. C. the plasma membrane engulfs the substance and moves it through the membrane. D. the use of energy from ATP to move water molecules against their concentration gradient.

Correct Answer: A

Rationale: The choices with ATP are nonsense. While choice C refers to endocytosis.

Question 4 of 5

Which one of the following terms best describes a phospholipid. It consists of a:

A. polar head and polar tail B. non-polar head and a polar tail C. polar head and non-polar tail D. non-polar head and a non-polar tail

Correct Answer: C

Rationale: Polar= hydrophilic head of phosphate(which can dissolve in the aqueous extracellular solution because water molecules are polar); non-polar= hydrophobic tails of lipid, which being non-polar, cannot dissolve in aqueous solutions.

Question 5 of 5

Which of the following statements about "leak channels" in the plasma membrane is correct?

A. Proteins that form these channels bind to solutes to allow them to pass into the cell. B. They are passageways formed by proteins to allow water and ions to move passively through the membrane. C. They allow small ions and molecules to move between adjacent cells. D. They are formed by glycoprotein and proteoglycans to allow hormones to enter cells.

Correct Answer: B

Rationale: This is the definition of leak channels. They may be "gated" which means shut until stimulated to open. J refers to facilitated diffusion.

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Which of the following is NOT epithelial tissue?

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Multiple Choice Questions on Cells Tissues and Organs Questions

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