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7th Gr Sci 1st 9 Wee
7th Grade Science 1st Nine Weeks Test
Question | Answer |
---|---|
Which organelle is responsible for breaking down glucose to produce usable energy for the cell? | Mitochondria |
Which organelle is responsible for converting energy from the Sun into food? | Chloroplasts |
What type of energy is food? | Chemical Energy |
What type of energy is sunlight? | Radiant Energy |
What type of organisms do photosynthesis – plants or animals? | Only plants, not animals |
What process turns radiant energy into chemical energy? | Photosynthesis |
T or F: Cell membranes are found in the cells of both plants and animals | True |
T or F: Chloroplasts are found in only plant cells. | True |
T or F: Cell walls are found in the cells of both plants and animals | False |
Which types of energy are produced during cellular respiration? | Mechanical and Thermal Energies |
Glucose is an example of this type of molecule, which is produced during photosynthesis. | Food or Sugar |
Give two examples of an inherited trait. | Any 2 examples are acceptable – examples include: eye color, hair color, skin color, height, personality, etc. Incorrect guesses: tattoos, hair length, favorite color, etc. |
List the 3 postulates of cell theory. | All living things are made of cells, all cells come from pre-existing cells, cells are the basic unit of life (phrasing can be different as long as meaning is the same) |
Define heredity. | The passing of genetic information from parent to offspring (different words with same meaning are acceptable) |
Give at least two other names for genetic material. | DNA, genes, chromosomes, genetic information, etc. |
What material determines our traits? | DNA, genes, chromosomes or genetic material are all acceptable answers. |
Which organelle holds our DNA? | Nucleus |
T or F: if you have a genetic disorder, you must have inherited it from your parents. | True |
T or F: Inherited traits can be acquired during your lifetime. | False |
Explain what an independent variable is. | The variable the scientist changes or manipulates. Can also say it’s the variable the scientist is studying. |
What is the function of a cell membrane? | To control what goes in or out of the cell |
What is the function of a cell wall? | To provide support to the cell |
Which variable is the x one that the scientist changes? | Independent variable |
What does DRY MIX remind us to do? | Dependent variable goes on the X axis and independent variable goes on the Y axis |