Session 1-intro To Cell

Question 1

What does the cytoplasm do?

Answer 1

Metabolism of carbs, amino acids and nucleotides

Fatty acid synthesis

Question 2

Lysosomes function?

Answer 2

Cellular digestion

Question 3

ER function?

Answer 3

Export proteins
Membrane synthesis
Lipid and steroid synthesis (SER)
Detox reactions 
Protein synthesis

Question 4

What two functions do both the ER and Golgi share?

Answer 4

Detoxification reactions

Export of proteins

Question 5

Nucleus function?

Answer 5

DNA synthesis and repair

Question 6

Nucleolus function?

Answer 6

RNA processing and ribosome assembly

Question 7

What organisms are eukaryotic?

Answer 7

Plants, animals and fungi

Question 8

Prokaryotic organisms?

Answer 8

Bacteria

Question 9

What cell components do eukaryotic animal cells not contain?

Answer 9

Cell wall

Question 10

What cell components do prokaryotes not contain?

Answer 10

Nucleus, ER, lysosomes, Golgi, vacuoles, mitochondria,

Question 11

What bonds are involved in macro molecular structures?

Answer 11

Non covalent hydrogen,ionic,hydrophobic and Philic, van der waals

Question 12

What is pk?

Answer 12

The stronger the tendency of an acid to dissociate, the lower the pka value

Question 13

What happens when the ph is higher than the pka value?

Answer 13

Deprotonation of side chains on amino acids

Question 14

What happens when the ph is lower than the pka value?

Answer 14

Protonation of side chains on amino acids

Question 15

What is pI?

Answer 15

The isoelectric point-point at which ph has no overall charge

Question 16

Is there rotation about a peptide bond?

Answer 16

No, due to double bond characteristics

Question 17

What orientation are the amide hydrogen and carbonyl oxygen in?

Answer 17

Trans

Question 18

What does the Golgi apparatus do?

Answer 18

Export proteins

Detoxification reactions

Question 19

Give examples of roles of proteins.

Answer 19

• catalysts-enzymes
• transporters (o2,Fe)
• structure (collagen)
• machine (muscle contraction)
• immune (immunoglobulin-antibodies)
• ion channel
• receptors (for hormones, neurotransmitter)