Unit 3 Lesson 1 What Are Cells? Copyright © Houghton Mifflin Harcourt Publishing Company

Let’s think!!! Let’s watch the video Unit 3 Lesson 1 What Are Cells? Copyright © Houghton Mifflin Harcourt Publishing Company

Warm up 1: Unit 3 Lesson 1 What Are Cells? Copyright © Houghton Mifflin Harcourt Publishing Company

What builds up our bodies? Unit 3 Lesson 1 What Are Cells? What builds up our bodies? Cells are the basic units of structure and function in a living thing. ( Organism) Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Cells? Copyright © Houghton Mifflin Harcourt Publishing Company

Robert Hooke Unit 3 Lesson 1 What Are Cells? Copyright © Houghton Mifflin Harcourt Publishing Company

Scientists developed the cell theory that states: Unit 3 Lesson 1 What Are Cells? The cell theory: Scientists developed the cell theory that states: 1- All living things are made of cells. 2- All life processes take place in cells. 3- New cells come from existing cells. Copyright © Houghton Mifflin Harcourt Publishing Company

Exit slip: (Brain Check) Unit 3 Lesson 1 What Are Cells? Exit slip: (Brain Check) Copyright © Houghton Mifflin Harcourt Publishing Company

Warm up 2: Nerve cells – skin cells - blood cells Text book p. 104 Unit 3 Lesson 1 What Are Cells? Nerve cells – skin cells - blood cells Warm up 2: Text book p. 104 Copyright © Houghton Mifflin Harcourt Publishing Company

Think of it… What are the differences between animal and plant cells? Unit 3 Lesson 1 What Are Cells? Think of it… What are the differences between animal and plant cells? *Observe the plant and the animal cells to spot out what’s common and what’s different. Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Cells? Copyright © Houghton Mifflin Harcourt Publishing Company

What Parts Do Cells Have? (Animal and Plant cells) Unit 3 Lesson 1 What Are Cells? What Parts Do Cells Have? (Animal and Plant cells) (BOSS) 1-Nucleus: It controls all the cell activities like: Making new cells Energy production Getting rid of wastes Copyright © Houghton Mifflin Harcourt Publishing Company

-It controls what enters and leaves the cell. Unit 3 Lesson 1 What Are Cells? 2- Cell membranes: -It controls what enters and leaves the cell. Copyright © Houghton Mifflin Harcourt Publishing Company

-Releases energy that the cells use to do their jobs. Unit 3 Lesson 1 What Are Cells? 3- Mitochondria: -Releases energy that the cells use to do their jobs. Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Cells? 4-Cytoplasm: - The jellylike cytoplasm gives the cell shape and holds the cell parts together. Copyright © Houghton Mifflin Harcourt Publishing Company

What Other Parts Do plant Cells Have? Unit 3 Lesson 1 What Are Cells? What Other Parts Do plant Cells Have? 1- The cell wall: Protects plant cells and helps the plant keep its shape. Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Cells? 2- The Chloroplast: The chloroplast uses the sun’s energy to make sugar to feed the plant. It gives the plant it’s green color. Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Cells? 3- The vacuole: The vacuole in a plant cell stores water, nutrients, and waste. In animal cells, the vacuole is much smaller. Copyright © Houghton Mifflin Harcourt Publishing Company

Uses sunlight to make food. controls what enters or leaves cell Exit slip 2: Unit 3 Lesson 1 What Are Cells? Uses sunlight to make food. controls what enters or leaves cell controls all cell activity Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Cells? Try to act the function of each cell part without talking in 10 seconds. If you know the cell part try to stick it on the board on the animal and plant cell diagram. Copyright © Houghton Mifflin Harcourt Publishing Company

Activity time: Unit 3 Lesson 1 What Are Cells? Copyright © Houghton Mifflin Harcourt Publishing Company

Let’s listen to the song Unit 3 Lesson 1 What Are Cells? Fun time : Let’s listen to the song Copyright © Houghton Mifflin Harcourt Publishing Company

Warm up 3: Unit 3 Lesson 1 What Are Cells? Copyright © Houghton Mifflin Harcourt Publishing Company

Why? Can cells divide? Cell division makes two cells from one. Unit 3 Lesson 1 What Are Cells? Can cells divide? Cell division makes two cells from one. Why? Copyright © Houghton Mifflin Harcourt Publishing Company

Why do cells divide? Cells divide for two reasons: 1- To grow. Unit 3 Lesson 1 What Are Cells? Why do cells divide? Cells divide for two reasons: 1- To grow. 2-To reproduce. Copyright © Houghton Mifflin Harcourt Publishing Company

What is inside the Nucleus? : Unit 3 Lesson 1 What Are Cells? What is inside the Nucleus? : Chromosomes are structures in the cell’s nucleus made of DNA. DNA is made of sections called genes. Genes control an organism’s characteristics such as: (Height , eye color, skin color, ability to roll your tongue) Copyright © Houghton Mifflin Harcourt Publishing Company

Exit slip 3 : Complete using words from the box: Unit 3 Lesson 1 What Are Cells? Exit slip 3 : Complete using words from the box: Gene – DNA –chromosome - nucleus Copyright © Houghton Mifflin Harcourt Publishing Company

Warm up 4 : Unit 3 Lesson 1 What Are Cells? Copyright © Houghton Mifflin Harcourt Publishing Company

Where Do Traits Come From? Unit 3 Lesson 1 What Are Cells? Where Do Traits Come From? Inherited traits are characteristics passed from parents to their offspring. Examples of these characteristics might include eye color, hair color, freckles, and face shape in humans, and fur color and texture in animals. Copyright © Houghton Mifflin Harcourt Publishing Company

Why are there genetic differences Unit 3 Lesson 1 What Are Cells? Why are there genetic differences Genetic differences are because an organism receives only half of its genes from each parent. This results in genetic differences between parents and offspring. Copyright © Houghton Mifflin Harcourt Publishing Company

Dominant and Recessive Traits : Unit 3 Lesson 1 What Are Cells? Dominant and Recessive Traits : Mendel hypothesized that traits in organisms are controlled by a pair of factors and each parent passes on one factor. Copyright © Houghton Mifflin Harcourt Publishing Company

A recessive trait appears only if the 2 factors are recessive. Unit 3 Lesson 1 What Are Cells? Strong traits that will appear are called : Dominant traits. (eg. Tallness) Weak traits that will not appear are called : recessive traits. (eg. Shortness) A recessive trait appears only if the 2 factors are recessive. What happens if a child is having a tallness factor (dominant) and a shortness factor ( recessive)? What happens if a child is having 2 shortness factors (recessive)? Copyright © Houghton Mifflin Harcourt Publishing Company

Exit slip 4: Unit 3 Lesson 1 What Are Cells? Copyright © Houghton Mifflin Harcourt Publishing Company

Unit 3 Lesson 1 What Are Cells? Copyright © Houghton Mifflin Harcourt Publishing Company