BTS
What 3 things do living things need?
1. water
2. food
3. a place to live
Bonus: oxygen
What is a cell wall?
the stiff structure that protects and supports the plant cell
This thin covering is found outside the cell.
cell membrane
Filling the cell is this substance that is like jelly.
cytoplasm
TRUE or FALSE: Viruses can reproduce on their own.
False. Viruses force living cells to make new copies of the virus.
How are bacteria similar to viruses?
They can't be seen without a microscope.
Why did the author write this selection?
to inform readers about the organization of the structures of organisms
What is the most basic part of an animal?
a cell
What job does a root cell do?
takes in water and nutrients
What is the function of the red blood cell?
passes oxygen throughout the body
Describe the shape of a red blood cell.
It looks like a soccer ball without air.
What cells are responsible for the movement of limbs in animals?
muscle cells
What is the function of nerve cells?
to carry messages from one part of an animal's body to the other
What life function does the heart perform?
moves blood throughout your body
What is similar between a hand lens and a microscope?
Both make small things look much larger.
Define offspring.
a term we use for the young of living things
A cell is the smallest unit of living what?
living matter
What is a chloroplast?
the plant cell’s food factory that has chlorophyll
What does chlorophyll help the plant with?
It helps plants make food using the sun's energy.
What part of a cell controls all activities?
nucleus
What are the five basic life functions that organisms carry out?
1. to grow
2. to reproduce
3. to get energy from food
4. to react to changes in their environment
5. to get rid of waste
Provide 3 examples of a basic life function being performed by organisms.
1. An albatross reproduces to make offspring.
2. A snake sheds its skin to develop.
3. A woodchuck eats flowers.
Explain what the author was trying to show by writing the following sentence:
‘’Ants and onion plants are made of cells. You are too!’’
All living things are made of cells.
What makes plant cells different from animal cells?
Plant cells have chloroplasts and cell walls, but animals do not. Plant cells also have 1-2 large vacuoles, and animals have many small ones.
What are organisms?
Name the 3 types of organisms.
Organisms are living things.
1. humans
2. plants
3. animals