Advertisement Upgrade to remove ads

The 3 main areas of eukaryotic cell

1. cell wall and/or membrane
2. cytoplasm
3. nucleus

Cytoplasm contains..


Cell wall and/or membrane forms...

the outer layer

The nucleus is bounded by...

nuclear membrane

Nucleus contains...


Which kingdoms have both cell walls and membranes?

both bacteria kingdoms

Which kingdom only has cell membrane (no cell wall)?


Plants' cell walls are made of ____ which is a poly_________


Bacteria's cell walls are made of ______ and _____. The name for this substance is _________.

Protein and sugar

Fungi's cell walls are made of ______ which is a poly_________ that's similar to ________.


Cell membranes are made of...

lipids and proteins

Cell membranes contain phospholipids. What do these lipids form?

phospholipid bilayer

Why are phospholipid bilayers effective for cell membranes?

inside and outside of cell are aqueous/watery
fatty middle layer prevents ALL hydrophilic substances for passing through

Cell membranes are _________________ meaning that they only allow certain substances to pass through

selectively permeable

What is simple diffusion? What type of transport is it?

movement of hydrophobic substances down their concentration gradient (high --> low)

Why can simple diffusion only move ______ substances?

substances are carried through lipid space, so they must be interactive with phospholipid tails

Simple diffusion uses energy. T or f?


What is used in facilitated diffusion? Name and describe the 2 types

1. channels: highly specific to specific substances
2. carriers: attach to substance, pulls it into cell

Substances that pass are not hyd_________


Active transport needs ...


What makes active transport different?

moves substances against conc. gradient (low --> high)
active transport- needs energy

What types of substances can be moved through active transport (hydrophobic or hydrophilic)?


Are proteins used in active transport?


What are 2 types of bulk transport?

1. endocytosis
2. exocytosis

What is endocytosis?

outside particle surrounded and engulfed within vesicle (pocket)

What is exocytosis?

opposite of endocytosis
particle in cell is released to outside by fusing vesicle with the membrane

What is osmosis?

diffusion of water
down conc. gradient

What is a hypertonic solution?

highly concentrated with a solute
more particles outside cell than inside

What happens to cells in hypertonic solutions?

shrivel up

What is a hypotonic solution?

fewer particles outside cell than inside

What happens to cells in hypotonic solutions?

swell up/burst

What is an isotonic solution?

same concentration of substance outside and inside cell

What happens to cells in isotonic solutions?

nothing, not affected

prokaryotes have organelles. T or F?


Which eukaryotic organelle is not membrane bound? What is their function

sites of protein synthesis/makes proteins

Which eukaryotic organelles are double membrane bound?

nucleus and mitochondira

What is a vacuole?

stores waste and other materials

Where are ribosomes located?

on rough endoplasmic reticulum

What are smooth endoplasmic reticulums?

system of membrane and tubes that moves substances around cell

Which eukaryotic organelle sorts and packages proteins?

golgi apparatus

What do rough endoplasmic reticulums?

holds ribosomes

What is mitochondria?

makes ATP

Which eukaryotic organelle digests foreign substances and "dead" organelles?


Centrioles help form ____ during ______.

spindles during mitosis

Nucleus contains ...?

genetic material

Which organelle makes ribosomes?


Cell membrane regulates...?

what goes in and out of cell

What is the disadvantage of using heat to speed up reactions?

heat may damage the cells and cause intended reactions

What do enzymes/catalysts do?

speed up reactions

What is the "lock and key" theory?

enzymes match up perfectly with substrates

Where are the active sites of an enzyme?

where substrate and enzyme bind

Enzymes are substrate _____.


Enzymes did after catalyzing a reaction. T or F?

they are recycled

Enzymes are p______ and o______

proteins and organic

What denatures enzymes?


What molecules help enzymes? What is an example of this?


Why are vitamins essential?

without them many enzymes would not function properly and many chemical reactions would not occur

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again


Reload the page to try again!


Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording