Unit 1
Which option is a tool that organizes the different types of atoms?
periodic table
Which option contains a true statement about cell theory?
Louis Pasteur did an experiment that proved new cells come from existing, living cells.
Which option describes how genes control the traits of a cell?
Genes code for specific structures and molecules in a cell. Those structures and molecules form the traits of the cell.
Which statement is a pattern in the fossil record?
Multiple mass extinction events have occurred in Earth’s history.
Which physical adaptation increases an organism’s chances of finding a mate?
the quills of a porcupine
What are the benefits of using graphs in science?
Graphs help scientists perform tasks such as data presentation and data analysis.
When a person looks at an object, the sense receptors in the eyes respond to changes in what?
light
Which option explains why genes are sections of chromosomes, but chromosomes are not made up of genes?
There are sections of chromosomes that are not genes.
Which option describes how the absolute age of a fossil is commonly determined?
The carbon-14 in a fossil breaks down over time. The remaining amount of carbon-14 in the fossil can be used to calculate its age.
Which physical adaptation increases a flower’s chances for successful pollination?
producing flowers with attractive colors
Which option discusses hypotheses and scientific theories correctly?
Hypotheses are more limited in scope than theories and are not supported by extensive research like theories are. A hypothesis can be a small part of a theory, but it cannot become a theory.
Where does photosynthesis occur in a plant cell?
chloroplasts
Which observation led Mendel to the idea that parents passed only part of their genes to offspring?
A tall plant could transfer alleles for a short plant to the offspring.
Which statement describes Hutton and Lyell’s work?
Both Hutton and Lyell claimed that Earth was very old and changed very slowly over time.
Which option describes why some bird species migrate?
Some birds migrate to avoid harsh winter and summer conditions. By migrating, birds can be in regions that experience mild winters and mild summers.