Active Learning Lecture 2

Question 1

Chart of body organization with examples

Answer 1

Atoms (oxygen, hydrogen) > molecule (bonding into h2o) > cell (smooth muscle cell) > tissue (smooth muscle tissue) > organ (bladder) > organ system (urinary tract system) > organism (us!)

Question 2

what is a cell

Answer 2

basic structural and functional unit of all organisms

Question 3

what is the approximate size of a cell?

Answer 3

2.0 um height, 7.5um wide

Question 4

why study cells to understand human health?

Answer 4

to understand how organisms function, how organ, tissues and cells function. Understanding this will help human and medical science in developing new vaccines and more effective medicines.

Question 5

cytoplasm

Answer 5

clear, jelly-like fluid that fills inside of the cell. function: cellular activities, signaling pathways, metabolic chemical reactions occur here

Question 6

cell membrane

Answer 6

isolate cytoplasm from external environment, regulate exchange of substances, communicate with other cells [sliding mall doors]

Question 7

nucleus

Answer 7

stores genetic information, the brain [mall boss]

Question 8

nucleoulus

Answer 8

where ribosomes assemble (RNA)

Question 9

rough endoplasmic reticulum

Answer 9

protein synthesis. has ribosomes attached. ribosomes travel by rough er [escalator]

Question 10

golgi apparatus

Answer 10

gets proteins and lipids (fats) from the rough er. It modifies some of them and sorts, concentrates and packs them into sealed droplets called vesicles. [shipping center - receiving and sending of materials of cell]

Question 11

mitochondria

Answer 11

powerhouse, energy center, creates ATP [ lights in the store]

Question 12

smooth endoplasmic reticulum

Answer 12

lipid synthesis

Question 13

lysosomes

Answer 13

stomach of the cells, digest organelles that are worn out, viruses/bacteria/food particles [mall janitors]

Question 14

ribosomes

Answer 14

site of protein synthesis

[stores inside the mall/producing money(protein) ]

Question 15

Endoplasmic Reticulum

Answer 15

biosynthesis (makes) macromolecules

Question 16

cytoskeleton

Answer 16

maintain shape and internal organization of cell. enables cells to carry out essential functions

Question 17

flagella

Answer 17

longer and fewer than cilia; moves like a propeller; helps cells move

Question 18

cilia

Answer 18

shorter and many more than flagella. helps move liquids around them

Question 19

difference between flagella and cilia

Answer 19

flagella moves the cell, cilia moves liquid across cell. the beating pattern of the two are different

Question 20

similarity between flagella and cilia

Answer 20

they assign movements with regards to cells. structural they are identical