Herzing NU621 Quiz 1 100% Graded

•             Question 1  Which of the following describes an amphipathic molecule?

Answers:

 Hydrophobic and not Hydrophilic

Hydrophilic and not Hydrophobic

 Hydrophobic and Hydrophilic

Nonpolar

•             Question 2  Movement of a solute molecule from an area of high concentration to an area of low concentration is called:

Answers:            

Diffusion

Filtration

Osmosis

Hydrostatic pressure

•             Question 3  Which statement is correct regarding cellular energy?

Selected Answer:

 Oxidative phosphorylation occurs in the mitochondria.

 Answers:

 Glycolysis is the building of sugar molecules.

Oxidative cellular metabolism is a single reaction making adenosine triphosphate (ATP).

 Oxidative phosphorylation occurs in the mitochondria.

Anaerobic glycolysis occurs in the presence of oxygen.

•             Question 4  A eukaryotic cell: Selected Answers: 

Answers:

 Is smaller than a prokaryotic cell.

Contains structures called organelles.

Lacks a well-defined nucleus.

Does not contain histones.

 •            Question 5  Which of the following are functions of a protein? (Select all that apply.) Selected Answers: 

 Answers:

 Transport channels

Cell surface markers

 Transport channels

Enzymes that drive pumps

Cell surface markers

Synapses for cells

•             Question 6  The function of a histone found in a eukaryote cell focuses on cellular: Selected Answer:   

Answers:

 Division

Movement

Activities

  Deoxyribonucleic acid (DNA) folding

•             Question 7  Which of the following describes the term “chemotaxis”?

Answers:

Uses the second messenger system

Cellular signal affecting the cell of origin

 Movement of cells along a chemical gradient

Ligand binds with receptors, triggering a second reaction

•             Question 8  Which if the following is an energy-releasing process?

Answers:

 Anabolism

 Catabolism

Substrate-induced reaction

Second messenger system

•             Question 9  An organelle that is responsible for the metabolism of cellular energy is referred to as a/an:

Answers:

 Golgi complex

 Mitochondrian

Endoplasmic reticulum

Nucleolus

 •            Question 10  Which of the following is the most common cause of cellular injury?

Answers:

 Free radical-induced injury

Chemical injury

 Hypoxia

Mechanical factors