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- 1. Multiple Choice
Which table correctly identifies the three kingdoms?
- 2. Multiple Choice
What are the main functions of the human skeletal system?
To support the body, protect the organs, produce blood cells, and store calcium
To regulate the composition of body fluids by removing metabolic wastes and retaining a balance of water, salt, and other nutrients
To regulate and maintain bodily functions by producing hormones and releasing them into the bloodstream
To enable the diffusion of oxygen into the bloodstream and the removal of carbon dioxide from the bloodstream
- 3. Multiple Choice
Based on the key, which of these fish is most likely a bluegill?
- 4. Multiple Choice
A tiger cub has a pattern of stripes on its fur that is similar to that of its parents. Where are the instructions stored that provide information for a tiger’s fur pattern?
In cytoplasm inside cells
On genes within chromosomes
On the cell membrane
In the mitochondria
- 5. Multiple Choice
Researchers are investigating processes that happen during digestion. Which answer choice describes only a physical change during digestion?
Hydrochloric acid in the stomach breaks down proteins.
Chewing in the mouth breaks food into small pieces.
Enzymes in saliva start the digestion of starches before food is swallowed.
Bacteria in the intestines convert dietary fiber into fats.
- 6. Multiple Choice
What is the primary function of this body system?
The protection of vital organs from injury
The chemical breakdown of food into smaller pieces
The transport of nutrients, water, and oxygen to body cells
The production of hormones that regulate growth and metabolism
- 7. Multiple Choice
The main function of this system is to —
control reproduction
transport oxygen
produce hormones
remove waste
- 8. Multiple Choice
Which organelle stores the information that determines an individual’s blood type?
Organelle 1
Organelle 2
Organelle 3
Organelle 4
- 9. Multiple Choice
Both the esophagus and the small intestine are involved in the digestion of food. The esophagus squeezes food into the stomach by wave-like muscle contractions. Peptidase enzymes in the small intestine break food molecules into smaller molecules. Which statement best describes changes to food during digestion?
The muscle contractions result in physical changes, while the action of the peptidase results in chemical changes.
The muscle contractions and the action of the peptidase both result only in physical changes.
The muscle contractions result in chemical changes, while the action of the peptidase results in physical changes.
The muscle contractions and the action of the peptidase both result only in chemical changes.
- 10. Multiple Choice
Which list of characteristics describes organisms classified as animals?
Unicellular, prokaryotic, autotrophic
Multicellular, eukaryotic, heterotrophic
Unicellular, eukaryotic, heterotrophic
Multicellular, eukaryotic, autotrophic
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