The statement that all cells come from cells that already exist is part of __________.
|A)||the fossil record|
|C)||the cell theory|
|D)||the reproductive theory|
Which two structures do plant cells have that animal cells do not have?
|A)||vacuoles and chloroplasts|
|B)||chromosomes and chlorophyll|
|C)||cell membrane and a nucleus|
|D)||chloroplasts and a cell wall|
What is the smallest unit of life in all living things called?
Which of the following does NOT have organelles?
Which of the following is an organ?
Where does cellular respiration occur?
|A)||in the mitochondrion|
|B)||in the lungs|
|C)||in the vacuole|
|D)||in the chloroplasts|
What object did Robert Hooke first observe cells in?
Which of the following are the smallest organisms on Earth?
Blood is considered a(n) __________.
If a microscope has a lens with a power of 20X, how many times will it magnify something?
|A)||200 times its actual size|
|B)||20 times is actual size|
|C)||2 times its actual size|
|D)||2,000 times its actual size|
What type of instrument is used to look at cells?
Groups of similar cells that all do the same sort of work are called __________.
Cytoplasm is made mostly of _________.
If a group of organs work together to perform a specific job, what are they called?
|D)||an organ system|
Cells that form a system through which water, food, and other materials move in a plant are __________.
|B)||long and tubelike|
Which of the following is NOT an organ?
Which of these is similar in function to a vacuole?
|B)||a bakery manager|
|D)||an electric circuit|
Put the level of organization in order from smallest to largest.
|A)||cells, organs, tissues, and organ systems|
|B)||cells, tissues, organs, and organ systems|
|C)||organs, tissues, cells, and organ system|
|D)||organ system, organs, tissues, and cells|
Which type of cell forms a protective layer for your body?
What determines which traits an organism will have?