Unit 3 : Cytology Midterm Review

 What occurs during diffusion?

•  A substance spontaneously moves from an area of high concentration to an area of low concentration

•  A substance spontaneously moves from an area of low concentration to an area of high concentration. 

•  A substance moves from an area of high concentration to an area of low concentration by adding energy. 

•  A substance moves from an area of low concentration to an area of high concentration by adding energy. 

 A solution that has a higher concentration of solute than the cell is:

•  hydrotonic 

•  hypertonic 

•  hypotonic 

•  isotonic 

 Which of the following proteins allow body cells to identify another cell as self or foreign?

•  cell identity marker 

•  channel 

•  receptor 

•  transporter 

 Which protein helps move substances into and out of the cell in facilitated diffusion?

•  cell identity marker 

•  channel 

•  receptor 

•  transporter 

 Which of the following is not Extracellular fluid(ECF)?

•  cytosol 

•  interstitial 

•  lymph 

•  plasma 

 What will happen to a RBC if placed into a hypotonic solution?

•  water will enter the cell and lead to crenation

•  water will enter the cell and lead to hemolysis

•  water will leave the cell and lead to crenation 

•  water will leave the cell and lead to hemolysis 

Tags

NGSS.HS-LS1-3

 Which of the following is NOT true about osmosis?

•  There is a difference in concentration of a solute across a membrane

• water will move through the membrane

•  solute will move through the membrane

•  the membrane is selectively permeable 

 In the sodium/potassium pump which of the following is NOT true?

•  3 sodium move out of the cell and 2 potassium move into the cell each cycle 

•  ATP is used to change the shape of the transporter protein

•  it is used to move sodium and potassium down their concentration gradients 

•  initially the transporter protein is open toward the inside of the cell

Which organelle is directly attached to the nuclear membrane/envelope?

•  cilia

•  endoplasmic reticulum 

•  golgi complex 

•  mitochondria 

Tags

NGSS.MS-LS1-2

People with cystic fibrosis develop thick mucus. This is the result of a faulty pump for what?

•  sodium 

•  potassium 

•  chlorine 

•  calcium 

Tags

NGSS.HS-LS3-2