Lecture 1 Part 2

Question 1

What type of feedback?

Parturition

Answer 1

Positive feedback

Question 2

What type of feedback?

Vasodilation

Answer 2

Negative feedback

Question 3

What makes a membrane “fluid” and not stiff?

Answer 3

Cholesterol

(More cholesterol = less stiff)

Question 4

What is the basic building block of the cytoskeleton?

Answer 4

Proteins

(more specifically g-actin (aka globular actin))

Question 5

What 2 functions do carbohydrates attached to the cell membrane perform?

Answer 5

-cell signaling
-cell identification

(Think of them almost like cell phone towers on the external surface of the membrane)

Question 6

What is the name of the structures attached to cell membranes that aid in moving things/secretions across the membrane?

Answer 6

Cilia

Question 7

What connects the cilia to the cell membrane?

Answer 7

Basal body

Question 8

What cylindrical structure controls movement of DNA strands when a cell divides?

Answer 8

Centrioles

Question 9

This organelle is responsible for synthesizing polypeptides (building block of proteins)

Answer 9

Ribosome

Question 10

What 2 locations are ribosomes found?

Answer 10

-free in cytoplasm
-attached to rER

Question 11

This organelle “sandwiches” the mRNA in appropriate combinations

Answer 11

Ribosome

Question 12

Within the ribosome, the ___ site reads the codon

Answer 12

A site

Question 13

Within the ribosome, the ___ site builds the polypeptide chain

Answer 13

P site

Question 14

This organelle is the “powerhouse” or the site of aerobic respiration

Answer 14

Mitochondria

Question 15

What organelle does the Krebs cycle occur in?

Answer 15

Mitochondria

Question 16

Pt. is having metabolic issues. What organelle is probably dysfunctioning?

Answer 16

Mitochondria

Question 17

What organelle makes you think of these terms:

Anti-oxidants
Free radicals
Inflammatory mediators
Peroxides

Answer 17

Mitochondria

Question 18

What 2 organelles have their own DNA?

Answer 18

Mitochondria
Neuclei

Question 19

TCA cycle occurs in the _________

Answer 19

Mitochondria

Question 20

Oxidative phosphorylation occurs in the _________

Answer 20

Mitochondria

Question 21

This organelle is the primary site of reactive oxygen species (ROS) production

Answer 21

Mitochondria

Question 22

This organelle synthesizes proteins

Answer 22

Rough Endoplasmic Reticulum (rER)

Question 23

What organelle makes the rER rough?

Answer 23

Ribosomes

Question 24

What organelle does the rER send proteins to?

Answer 24

Golgi

Question 25

What organelle processes lipids?

Answer 25

Smooth ER (sER)

Question 26

What organelle will help repair a damaged cell membrane?

Answer 26

Smooth ER

(because It makes lipids)

Question 27

When you think of low testosterone, what organelle do you think of?

Answer 27

sER

(synthesizes lipids & cholesterol aka steroids aka sex hormones)

Question 28

Which organelle is the UPS/Fedex of the cell?

Answer 28

Golgi

Question 29

Cellular products enter the golgi through the ____ face

Answer 29

Cis face

Question 30

Cellular products leave the golgi via the ____ face

Answer 30

Trans face

Question 31

If a word ends in -ase, it means its an _________

Answer 31

Enzyme

Question 32

DNA is stored in the _____

Answer 32

nucleus

Question 33

Which intercellular junction type allows small molecules to pass between cells?

Answer 33

Gap junctions