The Cells that make us article-cc

1. According to Mike’s mom, what is a cell?

• a multicellular organism
• the smallest unit of life
• a type of tissue

2. How does Mike’s mom compare the cell membrane and the nuclear membrane?

• Both the cell membrane and nuclear membrane are coverings
• Both the cell membrane and the nuclear membrane controls the cell’s activities.
• Both the cell membrane and the nuclear membrane let out waste.

3. Read the following sentences from the text.“But some creatures have just a single cell, like an amoeba. They are called unicellular organisms. Other creatures, like us human beings, are collections of cells. These are called multicellular organisms. Multicellular organisms can range in size from brown algae to large animals like elephants and whales, which have trillions of cells."What can be concluded about cells based on this information?

• Cells in multicellular organisms are stronger than unicellular organisms. Audio
• Cells can only support life if they are part of a multicellular organism. Audio
• Some cells can support life independently. Other cells support life collectively. Audio

4. Read the following sentences from the text.“A group of human cells band together and form a tissue. There are four main types of tissue in humans. Connective tissues include blood or bones. These form connections between structures in the body. Muscle tissues form muscles, which help us move. Nervous tissues are in the brain, spinal cord, and nerves. This type of tissue helps to control many body activities. Epithelial tissues are tissues that line or cover the different parts of the body. This type of tissue has various functions, such as protecting and filtering.”Based on this information, what can you conclude about tissues?

• All tissues band together to form cells. Audio
• Each type of tissue has a different function. Audio
• Some tissues are more important than others.

5. What is this text mostly about?

• how the parts of cells, tissues, and organs work together Audio
• the importance of mitochondria in the life of a human being Audio
• how tissues are made from groups of cells to serve different functions Audio

6. Read the following sentences from the text.“That’s not all,” said Mike’s mom. “The organs in your body are made of various tissues. For example, your heart is made of all four types of tissue. All of the tissues in your heart work together to pump blood through your body. The heart is one of five vital organs in humans. The other vital organs are the brain, kidneys, liver, and lungs.”“So these organs are important in keeping me alive?” asked Mike.“Yeah, and each organ performs its specific function because of the tissues that constitute it.”As used in this sentence, what does the word “constitute” most nearly mean? Audio

• give something energy
• make up the parts of something
• change in shape or size

7. Choose the answer that best completes the sentence below.__________ one type of tissue in the heart by itself cannot pump blood through the body, a collection of the four types of tissue in the heart can work together as an organ to pump blood

• Thus
• Although
• For instance

8. What is an organ made of?

• matter
• cells
• blood