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science-cells
Looking into cells
Question | Answer |
---|---|
What are the tiny cell structures in a cell called? | organelles |
what do most organelles contain? | cell wall, cell membrane, and the nucleus |
the nucleus is surrounded by a nuclear membrane. | true or false? true |
collections of sacs and tubes are called what? | Golgi body |
a _________ stores food and other materials in the cell. | vacuole |
_____ break down food. | lysosomes |
A bacterial cell is smaller than a plant or animal cell. | True or false? False |
Rod- shaped organelles are called chloroplasts. | True or false? False |
An ________ is any substance that cannot be broken down into simpler substances. | An element |
The smallest unit of most compounds is called a.......... | Molecule |
Compounds that contain carbon are called ____________. | Organic compounds. |
What is enzyme? | A type of protein that speeds up a chemical reaction in a living thing. |
Are nucleic acids small? | No, they are large |
DNA is passed from parent to offspring. | True or false? True |
Whats an example of a lipid? | Fats, oils, and waxes |
Explain what RNA is. | the production of proteins |
Without water, most chemical reactions within the cells could not take place. | True or false? True |
Can elements combine? | Yes they can. |
What is a ¨carbonhydrate¨? | an energy-rich organic compound mode of the elements carbon, hydrogen, and oxygen. |
All cells have a........... | cell membrane |
The cell wall helps ________ and __________ a cell. | protect and support |
Small, grainlike bodies called ________ produce proteins. | ribosomes |
One of the cell membranes main functions is to control what substances come into and out of a cell. | True or false? True |
A bacteria cell has a cell wall and a cell membrane but not a nucleus . | False or true? True |