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Protein synthesis 2
Today's lesson
1. Mini test - cell membranes and cytoskeleton
2. What is protein synthesis?
3. How does it work in the cell?
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Diapositive
Biologie
Middelbare school
vwo
Leerjaar 3
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Today's lesson
1. Mini test - cell membranes and cytoskeleton
2. What is protein synthesis?
3. How does it work in the cell?
Slide 1 - Diapositive
How can a substance be transported across a membrane passively (without ATP)
A
The substance moves from a higher concentration to a lower concentration
B
The substance moves from a lower concentration to a higher concentration
C
It uses a protein pump
D
It doesn't
Slide 2 - Quiz
If a substance is transport against a concentration gradient (low concentration to high) what 2 things are needed by the cell?
A
ATP and a hydrophilic membrane
B
ATP and a hydrophobic membrane
C
ATP and a transport protein
D
none of the above
Slide 3 - Quiz
Small polar molecules can pass easily through a cell membrane. Give 1 example of a small polar molecule.
A
glucose
B
amino acid
C
ions
D
water
Slide 4 - Quiz
What part of the cell membrane is hydrophobic?
A
The tails - they love water
B
The tails - they "hate water
C
The heads - they hate water
D
The heads - they love water
Slide 5 - Quiz
Protein synthesis
-Process by which proteins are made in the cell
-Various organelles are needed:
Nucleus - DNA carries code, changes it to RNA
RNA leaves cell to ribosome - protein made here
Protein goes to ER - folded into shape
Vesicle transports protein to Golgi (finished shape)
Completed protein transported out of the cell via secretion
Slide 6 - Diapositive
Different kinds of proteins
Hormones
Receptors
Channels
Carriers
And many, many more
Slide 7 - Diapositive
To function you need a specific 3D-structure or your polypeptide chain.
Slide 8 - Diapositive
Proteins are very specific
specific function must mean specific structure
building blocks
amino acids
Slide 9 - Diapositive
Slide 10 - Diapositive
What is DNA?
- Carries "recipe" for all proteins
-Recipe carried on 4 bases
A - adenine
C - cytosine
G - guanine
T - Thymine
Slide 11 - Diapositive
Slide 12 - Vidéo
HW
Q 14 in module
Slide 13 - Diapositive
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