Earth and Space
Chemistry
Chemistry of Life
Reproduction, Genetics, and Natural Selection
Miscellaneous
100
If something is less dense, it...
Rises
100

What is one sign that a chemical reaction is taking place?

Bubbling, fizzing, burning, etc. 

100

What are the three main macromolecules?

Proteins, Lipids, and Carbohydrates

100

This type of reproduction only requires one parent

Asexual Reproduction

100

What force keeps the planets in orbit?

Gravity

200

Is warm air more or less dense than cold air

Less dense
200

Snapping a pencil is an example of what type of change?

Physical Change

200

What is necessary for photosynthesis to occur?

Carbon dioxide, water, sunlight (optional)

200

What are the four bases in DNA?

Adenine, Thymine, Guanine, Cytosine

200

If an organism has 32 chromosomes, how many did it inherit from its mother?

16 chromosomes

300

What equation do you use to calculate density?

Mass / Volume

300

Burning wood is an example of what type of change?

Chemical Change

300
What is necessary for cellular respiration?

Glucose, oxygen, water

300

How many daughter cells are produced by mitosis?

Two

300

If an animal has large ears, where does it likely live?

The desert

400

Describe how Earth's seasons happen.

The tilt of the Earth unevenly heats different regions (Northern v Southern hemisphere)

400

An endothermic reaction is one where...

The heat goes into the reaction, making the surroundings colder
400

List at least three parts of the digestive system

Mouth, esophagus, epiglottis, stomach, small intestine, large intestine, etc. 

400

What is one difference between mitosis and meiosis?

Mitosis makes body cells, meiosis produces reproductive cells

400

What causes the tides?

The pull of the Moon on the Earth

500

How can two cities be on the same latitude but have different weather?

One of the cities can be on the coast, where the temperature is mostly stable due to the ocean wind. The other city could be inland, where the temperature varies due to the westerlies over the land

500

How many individual atoms are in 2H2O?

Six (four Hydrogen, two Oxygen)

500

Describe how we get our energy from food

You eat the food. Your mouth begins to dissolve the food. It travels to the stomach where it is further dissolved. It travels through the small intestine and colon which help absorb the nutrients from the food. 
500

What is an advantage of asexual reproduction

Faster, only needs one parent, etc.

500

Why did the peppered moths change color?

The trees got darker due to pollution from factories