Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

17 Cards in this Set

  • Front
  • Back
imange that you are late for a date and you reach your friend's door out of breath becuase you ran the last 3 blocks from the bus stop. In a lame effort to impress and to try and make your date forget that you are half an hour late, you descrie what oxygen is used for in your cells. Which of the following is correct?
the mitochondria in my muscle cells need this extra oxygen to break down sugars and produce te energy I need to run.
the concentration of sodium ions is lower in the cytoplasm of a heart muscle cell that it is in the extracellular fluid. by what mechanism does the cell maintain this difference?
active transport
what generiization can you make about cytoskeleton?
a variety of cytosketel elements are integral in the preformance of numerous essential cellular functions
during endocytosis, the contents of the endocytic vesicle________
enters the cell
When placed in a certain sucrose solution, the volume of a cell decreases; therefore, the sucrose solution is __________ to the cell contents.
In osmosis, water diffuses from the side of the membrane with a higher concentration of water to the side with a lower concentration of water. What determines the concentration of water in a solution?
the amount of molecules other than water dissolved in the solution
Which of the following lists the correct order in which newly synthesized proteins are delivered to the plasma membrane?
from the endoplasmic reticulum to the Golgi apparatus to the plasma membrane
Why are living cells limited to remaining microscopic in size?
exchanges of substances at the membrane surface would take too long to diffuse throughout the interior of the cell
Which of the following structures are not found in all cells? Select the best answer.
cell wall
Sorting and modification of proteins is an important function of __________.
the Golgi complex
Two types of connections between cells called "gap junctions" and "plasmodesmata" are specialized to __________.
permit the passage of substances (e.g., ions) between cells through small passageways that directly link the cytoplasm of one cell to the cytoplasm of another cell
The fluid mosaic model describes membranes as fluid because ___________.
the phospholipids and proteins move from place to place within the bilayer
Diffusion is the movement of molecules from __________.
an area of higher concentration of that type of molecule to an area of lower concentration
Which of the following correctly lists organelles that are part of the internal membrane system of eukaryotic cells?
endoplasmic reticulum, Golgi apparatus, and vesicles
Which organelle would you expect to be in abundance in the liver of a drug addict?
smooth endoplasmic reticulum
Facilitated diffusion requires __________.
a membrane transport protein and a concentration gradient
Prokaryotic cells __________.
possess a single strand of DNA, but no definable membrane-enclosed nucleus