Unit 1
An astronomer uses a telescope to determine if a distant planet has any moons.
qualitative
Which are multicellular organisms?
a llama
an oak tree
Which option describes what genes are made up of?
Genes are made up of DNA.
Which of the statements describe how mineral fossils commonly form?
A dead organism settles down on the bottom of the water. It gets covered by sediment. Soft tissues decompose. Hard tissues are preserved.
Which option defines behavioral adaptations?
behaviors performed by an organism that increase its fitness
A doctor checks a patient’s symptoms and reports, “The patient has the flu.”
inference
Which option has a correct statement about unicellular organisms?
Unicellular organisms can be either prokaryotic or eukaryotic.
Which statement correctly describes how genes and chromosomes are related?
Genes are sections of chromosomes.
Which option explains how radioactive atoms can be used to determine ages of fossils?
Radioactive atoms break down at a known rate. Scientists can measure the amount of radioactive atom remaining in a sample, and calculate its age.
Which option correctly defines innate behavior and provides an example of one?
An innate behavior is an activity or behavior that occurs naturally in an organism. Baby sea turtles automatically moving to the ocean after hatching is an innate behavior.
Which of the given statements is a pattern that can be observed in nature?
Scientists noticed that animals that live in the South Pole tend to have white coats, and animals that live at the North Pole tend to have white coats.
When a sick person coughs, the number of people around that person who get sick increases.
Which gives the levels of organization in the correct order?
Muscle cells form muscle tissue. Various tissues, including muscle tissue, form the stomach, which is an organ. Various organs, including the stomach, form the digestive system.
Which statement describes how DNA, chromosomes, and genes are related?
Chromosomes contain coiled up DNA. Genes are sections of chromosomes.
Which of the given statements is a pattern in the fossil record?
The Earth’s climate changed between hot and cold over time.
Which option correctly defines learned behavior and provides an example of one?
A learned behavior is an activity or behavior that is taught to an organism. A dog sitting on command is an example.