Microbiome
Why didn’t Soraya see the mold growing on the soup before the fifth day? Why can she see it now?
Cells are too small to see with the naked eye
A student thinks that the human body only works properly when cells are getting molecules from food and molecules from air. Is the student correct?
Yes, the body only works when cells get molecules from food and molecules from air.
Define atoms
the tiny pieces that all matter—all the stuff in the world—is made of
What does Earth’s outer layer is like underneath the surface?
Earth’s outer layer is made of hard, solid rock.
A student left a sealed jar of water outside her home. Water can be a solid, liquid, or gas. When she put it outside, the water was a solid. Twelve hours later, the water had changed phase and was a liquid. What happened to the water molecules? Hint: how are the molecules moving in each phase)
Before the student left, the molecules were moving in place. After, the molecules were moving around each other.
If Soraya ate the soup on the fourth day (before she saw the mold), could she have gotten sick?
Yes
Stella’s respiratory system is not working well. Why is this a problem for her ability to exercise?
Her cells will not work well when they have low levels of oxygen.
Define molecule
a group of atoms joined together in a particular way
Define Cross Section
a diagram that shows what the inside of something looks like
Anh measured the temperature of a pond near his house. Before he left for school, the water in the pond was 18°C. When he came home from school, the temperature of the pond was higher than it was in the morning. What happened to the water molecules while he was at school?
The molecules started moving faster.
Name a type of bacteria that causes food poisoning
C. jejuni
Doctors tested a patient to find out what molecules were in her cells. Her cells contained normal levels of oxygen molecules, low levels of amino acid molecules, and low levels of glucose molecules. Will this patient be able to exercise normally?
No, her cells need glucose to react with oxygen to release enough energy to exercise.
What two substances are in rust
Oxygen and iron
Define convergent
moving toward the same place
A scientist has a container with a substance inside. At first, the molecules in the substance move away from each other. Later, the molecules move around each other. What change did the scientist observe in the substance?
Before, the substance was a gas. Later, it was a liquid.
The antibiotic medicines used to treat a bacterial infection kill bacteria, but antibiotics don’t have an effect on viruses. True or False
True
Jamal ate a meal of rice before seeing his doctor. Rice is made of mostly starch molecules. Jamal has been feeling tired a lot, so his doctor gave him a test that found that Jamal’s cells contained normal levels of oxygen and low levels of glucose. Does this explain why Jamal has been feeling tired?
Yes, Jamal's respiratory system is working, but his digestive system is not breaking down starch molecules into glucose for his cells.
What was the other substance in Westfield water?
Sodium nitrite
Define Divergent
moving apart in different directions
What happens to molecules when their kinetic energy decreases?
They move slower.
How is a virus different from bacteria?
Viruses are not made of cells like bacteria. Viruses are much smaller than cells. Bacteria are considered living things while viruses are not. Antibiotics can kill bacteria but not viruses.
A patient has been eating healthy foods, but her respiratory system is not working as well as it usually does. Can this patient still exercise normally?
No, her cells do not have enough oxygen to react with glucose and release energy.
Name a molecule
answers vary
Explain what landforms are created during divergent and convergent boundaries
Convergent: Trench
Divergent: Mid-ocean ridge
Scientists put a sample of water into a sealed tank. Water can be a solid, liquid, or gas. At first, the water was a liquid. Then, the scientists transferred energy out of the substance, and the water changed phase. What happened to the movement of the water molecules?
After the phase change, the water molecules moved . . .
c. slower and started moving in place.