Name ________________________________ Per. _____ Date ________________________

BiologyCell Structure & Function Review

1. What is the basic unit of structure and function of all living things? 2. List the 3 parts of the cell theory.

1-_____________________________________________________________2-_____________________________________________________________3-_____________________________________________________________

3. Of the following cell types, which are prokaryotic: bacteria, plant, animal, fungi?

4. T/F: All unicellular organisms are prokaryotic.

5. How are prokaryotes and eukaryotes alike? Different?

6. A cell/plasma membrane is composed of:

7. What are the functions of the cell (plasma) membrane?1. _____________________________________________________2. _____________________________________________________3. _____________________________________________________

8. Which type of cells are depicted below? Identify each (either prokaryotic or eukaryotic).

9. List 3 ways plant and animal cells differ.1- ______________________________________2- ______________________________________3- ______________________________________

10.Label the eukaryotic cell with the following and write the function in the space provided.

a. Mitochondria - b. Endoplasmic Reticulum - c. Cytoplasm - d. Lysosome - e. Vacuole - f. Ribosomes - g. Chloroplasts h. Nucleus -

11.What is the importance of the nucleus? What process occurs here?

12.Label the following parts of the plasma membrane with a letter below.

Phospholipids bilayer - _______Channel protein - _______Fatty acid tails - _______Phosphate heads - _______Protein - _______

13.Define homeostasis:

14.Two examples of organisms adjusting at the cellular level to maintain homeostasis are:

A

BC

D

E

15.Some molecules, but not others, are admitted through the cell membrane, not always according to their size. A membrane of this nature is said to be ___________________.

16.Which type of molecular transport requires input of energy from the cell & moves substances from a low concentration to a high concentration?

17.Define diffusion:

18.What is osmosis?

19.What is another name for “facilitated diffusion”?

20.Which mode of transport involves transport proteins moving molecules across the cell/plasma membrane?

a. Facilitated diffusionb. Diffusionc. Osmosisd. Endocytosis

21.Some molecules are too large to pass through the cell/plasma membrane and they need a little help. They get that help from ATP (adenosine triphosphate) which supplies the energy. Which type of transport involves energy?

a. Osmosisb. Diffusionc. Active transportd. Passive transport

22.In osmosis, water will move from the region of ______________ concentration to the region of ______________ concentration.

24.In the table below, give each column a title.

DNA is circular DNA is linearSmall and simple Large and complexDoes not have membrane bound organelles

Has membrane bound organelles

Does not have a nucleus Has a nucleusUnicellular Most are multicellular, but some

can be unicellular25.Put a check by the cells that would have a nuclear membrane. A nuclear

membrane surrounds a nucleus. (Think: would this cell have a nucleus? If it has a nucleus then it has a nuclear membrane.)_____ animal cell _____ plant cell_____ cyanobacteria _____ eukaryotic cell _____ photosynthetic organism (an organism that performes

photosynthesize)_____ prokaryotic cell

26.Look at each image below and determine which way the water will flow. Draw arrows to show the direction of the water flow. Determine what will happen to the cell (will the cell shrink, become turgid (swollen), or, stay the same?)

The cell will: _____________ _____________ _____________

27.The larger a molecule, the ____________________________ (faster/slower) the molecule will move/diffuse across a cell membrane.

28.Endocytosis is represented to the right. Molecules are being transported into the cell via a vesicle. Which type of transport is involved?

a. Passiveb. Osmosisc. Active d. Exocytosis

29.Osmosis is a type of passive transport (no energy is needed). Put a check by all that are needed for osmosis to occur.______ a semipermeable membrane ______ concentration gradient______ energy ______ sodium

30.What process is represented below?

31.If a scientist discovered a new, unicellular/single-celled organism and classified it as a prokaryote, what would be absent from the organism?

a. nucleus b. DNA c. nucleoid d. ribosomes

cellcellcell

32.If a protein is involved in moving molecules across the cell membrane, as illustrated above, what type of transport would be involved?

33.In which type of cell would you find a lot of chloroplasts?

34.The Endosymbiotic Theory states eukaryotic cells originated from …

35. At one point, scientists classified Bilzeebop as a prokaryote. Upon closer investigation, they discovered it is not a prokaryote but rather a eukaryote. What could they have discovered to make them change the classification of Bilzeebop? List as many things that could apply.