1. Warm-Up (11/2)
Answer the following questions, and explain in a complete sentence why each answer is correct.
Name
Date
Period
The nucleus is responsible for all the following except
A. housing chromosomes.
B. storing DNA.
C. digesting bacteria.
D. housing the nucleolus.
Proteins are synthesized, packaged, and exported from a cell using all the following organelles except
 A. endoplasmic reticulum.
B. Golgi Apparatus.
C. mitochondria.
D. ribosomes.

2. Cellular Transport
The phospholipid
Hydrophilic head
Hydrophobic tail

3. Cellular Transport Responsible for taking nutrients in and out
Hydrophilic head
Responsible for taking nutrients in and out
Hydrophobic tail
Hydrophilic head
Plasma membrane =
Phospholipid bilayer
Hydrophobic tail

4. Diffusion: movement across a concentration gradient.
Concentration gradient: direction from high concentration to low concentration across a membrane
High concentration
Low concentration

5. Why is water not able to pass through the middle of the phospholipid bilayer?
Water is not able to pass through the middle of the phospholipid bilayer because…

6. What is the structure of the phospholipid bilayer?
The structure of the phospholipid bilayer is…

7. Closure Answer the following question in a complete sentence:
Name
Date
Period
What about the structure of the plasma membrane prevents water from escaping from the cell?
The plasma membrane structure has _______________ which prevents water from escaping the cell because…
Scale from 1-10