Q: Which statement describes animal embryos? OPTIONS:
- display all the features of an adult
- represent the earliest stage of development
- have the same number of cells as a fertilized egg
- have half the number of chromosomes as an adult
A: represent the earliest stage of development

Which statement about photosynthesis and respiration is true?
OPTIONS:
- Photosynthesis stores energy and respiration releases energy.
- Respiration stores energy and photosynthesis releases energy.
- Photosynthesis and respiration are the same process.
- Photosynthesis and respiration do not have anything to do with energy.

Photosynthesis stores energy and respiration releases energy.

Q: Eating leafy vegetables is important for human health. This is because leafy vegetables are a good source of which of the following? ---- OPTIONS:
- protein
- carbohydrates
- minerals
- fat

A: minerals

Chromosomes contain the genetic information of an organism. Fruit flies reproduce by sexual reproduction. Most of the cells of a fruit fly have 8 chromosomes. Which statement best explains the source of the chromosomes in a normal fertilized fruit fly egg?
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OPTIONS:
- The egg cell contains all 8 chromosomes.
- The sperm cell contains all 8 chromosomes.
- The sperm cell provides 4 chromosomes and the egg cell provides 4 chromosomes.
- The egg cell provides 4 chromosomes and 4 sperm cells each provide 1 chromosome.

The sperm cell provides 4 chromosomes and the egg cell provides 4 chromosomes.

Question:
Laura adds 50 mL of boiling water to 100 mL of ice water. If the 150 mL of water is then put into a freezer, at what temperature will the water freeze?
OPTIONS:
- 0C
- 15C
- 37C
- 50C
Answer:
0C

Question:
A scientist studies the remains of two extinct animals to learn more about how they lived. She determines that one animal was a carnivore and the other was an herbivore. Which of the following did the scientist most likely compare to make this conclusion?
OPTIONS:
- the number of bones in the animals
- the size of the animals
- the body covering of the animals
- the skull of the animals
Answer:
the skull of the animals