Fluid Movement in Cells

Fluid Movement in Cells

• How long could you live without drinking? Without breathing?

• Without eating?

• These everyday activities are essential for life, but why do we need to drink, breathe, and eat? There are many ways to answer

  this question. One way is to look at these essential life functions at the level of cells.

Individual cells carry out the same activities as whole organisms.

When you drink water, the water is eventually used by your cells,

helping them to carry out their functions. Similarly, your cells also

make use of the air you breathe and the food you eat. In this Topic,

you will learn about some of the ways in which cells function.

Multiple Choice

Which is not a process of movement of substances within your body

• Diffusion

• Osmosis

• Magic

• Active Transport

Multiple Choice

_____________ is the free movement of particles across the membrane with the concentration gradient

• diffusion

• facilitated diffusion

• active transport

• fusion

Multiple Choice

Passive Transport uses ____ energy

• no

• a lot of

• a little bit of

• some

Multiple Choice

Passive Transport is the movement of particles across the membrane from an area of [ ___ ] to an area of [ ___ ]

• high to low

• low to high

• low to low

• high to high

Diffusion

Diffusion is the movement of molecules from an area of high concentration of the molecules to an area with a lower concentration. ... If a molecule can pass freely through a cell membrane, it will cross the membrane by diffusion

Multiple Choice

Permeable means

• things can pass through
• the concentration levels are different
• it is permanent
• things are stuck

Multiple Choice

During osmosis

• water moves from high to low concentration
• large or oddly shaped molecules move across a cell membrane
• water moves when energy is used
• proteins are built

Multiple Choice

Osmosis is the movement of _____ across a membrane.

• food
• energy
• oxygen
• water

Osmosis

Is the movement of a solvent (such as water) through a semipermeable membrane (as of a living cell) into a solution of higher solute concentration that tends to equalize the concentrations of solute on the two sides of the membrane.

Multiple Choice

Solutes move against the concentration gradient

• Passive Transport
• Active Transport

Multiple Choice

The picture is an example of...

• active tranport
• passive transport
• diffusion
• osmosis

Multiple Choice

Which one is the definition of active transport?

• movement of particles through the cell membrane from a region of lower concentration to a region of higher concentration using energy in the form of ATP.

• passage of water molecules from a region of their higher concentration to a region of their lower concentration through a partially permeable membrane

• net movement of molecule from a region of higher concentration to region of lower concentration. Molecule down a concentration gradient

• net movement of molecule from a region of lower concentration to region of higher concentration. Molecule down a concentration gradient

Active Transport

is active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration—against the concentration gradient. Active transport requires cellular energy to achieve this movement.