ap biology - cell size & surface area to volume ratios

timestamps

• 0:00

  Welcome and Introduction

• 0:31

  Study Tips Overview

• 1:01

  Assigned Readings Advice

• 1:34

  Summarizing Readings

• 2:06

  Teaching Each Other

• 2:36

  Horizontal vs Vertical Learning

• 3:08

  Rewatching Streams

• 3:41

  Tonight's Topics

• 4:11

  Cell Jobs Review

• 4:41

  Genetic Control

• 5:13

  Energy Processing

• 5:43

  Prokaryotic Organelles

• 6:14

  Endomembrane System

• 6:45

  Energy Organelles

• 7:16

  Cell Survival Needs

• 7:48

  Nutrients and Waste

• 8:18

  Environmental Exchange

• 8:49

  Why Size Matters

• 9:20

  Huge Cell Issues

• 9:52

  SA/V Ratio Effect

• 10:24

  Bacteria Example

• 10:57

  Size Impact on SA and Volume

• 11:28

  Surface Area Definition

• 11:58

  Shape Equations

• 12:28

  Cube Example

• 12:59

  Cube Chart Setup

• 13:32

  Cube Side Lengths

• 14:04

  Ratio Calculation

• 14:36

  Ratios Comparison

• 15:07

  Surface Area Equation

• 15:38

  Volume Equation

• 16:09

  Higher Ratio in Smallest

• 16:40

  Smallest Has Highest Ratio

• 17:11

  Higher Ratio Benefits

• 17:42

  Data Questions

• 18:12

  Ratio as Cubes Smaller

• 18:45

  Volume Grows Faster

• 19:16

  Volume Growth Rate

• 19:47

  Equation Reasoning

• 20:17

  Beet Lab Example

• 20:49

  Beet Data

• 21:20

  Diffusion in Beets

• 21:52

  Highest Ratio Beet

• 22:23

  Ratio Importance

• 22:54

  Nutrient Transportation

• 23:26

  Efficiency Blank Fill

• 23:57

  Why Cells Tiny

• 24:29

  Increasing Surface Area

• 24:59

  Specialized Structures

• 25:30

  Ideal Cell Shape

• 26:03

  Same Volume Comparison

• 26:35

  Squiggles Increase SA

• 27:08

  Cell Grids

• 27:40

  Cell Groups

• 28:11

  Skin Cells

• 28:41

  Root Hairs

• 29:11

  Microvilli

• 29:41

  Intestine Absorption

• 30:13

  Celiac Disease Example

• 30:43

  Mitochondria Folds

• 31:14

  ATP Production

• 31:46

  Red Blood Cells

• 32:16

  FRQ Chart

• 32:46

  FRQ Parts A B

• 33:18

  Why Not Smaller

• 33:50

  Supporting Details Small

• 34:23

  Why Not Larger

• 34:53

  Ratio Explanation Large

• 35:24

  Specialized Structures FRQ

• 35:55

  Wrapping Up and Questions