Cells and Organisms

Type the following statement: Bacteria are single-celled organisms.

Which of these is a behavioral adaptation?

• A. feathers

• B. white fur

• C. broad leaves

• D. hibernation

Which of the following is the best example of a structural adaptation?

• A. a crocodile living with other animals in a swampy area

• B. a heron having a long, pointed bill

• C. rain forest trees being used to build furniture

• D. a pack of coyotes moving from one area to another

The theory of natural selection explains how

• A. farmers develop certain types of crop plants

• B. variations appear in a species

• C. environments change over time

• D. useful traits spread through a population

During the process of digestion, carbohydrates are broken down into

• amino acids

• fatty acids

• simple sugars

Which of the following is not an example of selective breeding?

• A pink dogwood tree was discovered as a variation of a white dogwood species

• A new apple, called the Premier Star, has been developed from the Royal Gala apple

• The Serengeti cat was developed from a domestic cat and a wild serval cat

• Over many generations, Holstein cows have increased in milk production

An organism is multicellular, and its cells have nuclei. The cells also have cell walls and chloroplasts. Into which kingdom should the organism be classified?

• Archaebacteria

• Animalia

• Plantae

• Fungi

Which body system is responsible for removing wastes from the body?

• skeletal system

• endocrine system

• nervous system

• excretory system

Which method of reproduction produces offspring that are different from their parents?

• cell division

• making seeds

• sending out runners

• budding

Which statement is not part of the cell theory?

• All new cells come from previously existing cells.

• All living things are made up of cells.

• All cells contain a nucleus.

• The cell is the unit of structure and function in living things.