STAAR Biology Vocabulary

Which sequence represents the levels of organization found in a multicellular organism, from smallest to largest?

• Cell, Tissue, Organ, Organ System

• Organ System, Organ, Tissue, Cell

• Tissue, Organ, Organ System, Cell

• Cell, Organ System, Organ, Tissue

Answer explanation

The order of cell, tissue, organ, and organ system represents the smallest to largest levels of cellular organization.

Tags

NGSS.MS-LS1-3

Which sequence best describes an interaction between the integumentary and excretory systems that helps maintain homeostasis?

• Heart rate increases -> Blood vessels constrict -> Blood pressure increases

• Blood vessel is damaged -> Platelets begin to clump -> Blood vessel ruptures

• Blood sugar levels rise -> Pancreas secretes insulin -> Blood sugar continues to rise

• Body temperature increases -> Glands release sweat -> Body temperature decreases

Answer explanation

Sweat glands are part of the excretory system that is located within the integumentary system. When body temperature increases, the glands release sweat, and body temperature decreases.

A model of an enzyme and its corresponding substrate is shown.

Which model best represents the molecule at the end of the reaction?

• 
• 
• 
• 

Answer explanation

At the end of this chemical reaction, the enzyme remains unchanged, and the substrate has been broken down.

Tags

NGSS.MS-LS1-7

Both the respiratory system and the digestive system involve the uptake of necessary molecules from an animal’s surroundings. Alveoli are tiny sacs that aid in the exchange of carbon dioxide and oxygen in the lungs. Intestinal villi are tiny projections along the lining of the intestines used to take in nutrients from food passing through.

Which system must interact with the respiratory and digestive systems to transport gases and nutrients throughout the body?

• Endocrine

• Integumentary

• Immune

• Circulatory

Answer explanation

The circulatory system transports blood to and from the heart and the rest of the body. Nutrients and gases, such as oxygen, are dissolved in the blood. The circulatory system must interact with the respiratory and digestive systems to transport the nutrients and gases in the blood throughout the body.

Tags

NGSS.MS-LS2-3

What is a producer

• An organism that consumes other consumers

• An organism that breaks-down dead organisms

• An organism that gets its energy through from the sun to perform photosynthesis

• An organism that eats dead organims

Tags

NGSS.MS-LS1-6

What is a decomposer?

• An organism that breaks-down dead organisms

• An organism that consumes other consumers

• An organism that eats dead organisms

• An organism that performs photosynthesis by using the sun's energy

Tags

NGSS.MS-LS2-3

What is a scavenger?

• An organism that uses the sun energy to perform photosynthesis

• An organism that consumes other living consumers

• An organism that breaks-down dead organisms

• An organism that eats dead consumers

What is a herbivore

• Organism that eats both plants and animals

• An organism that breaks-down dead organisms

• Organism that eats only producers

• An organism that eats on "meat" other consumers

What is an omnivore?

• Organism that eats both plants and animals

• Organism that eats only producers

• An organism that eats only "meat" other consumers

• An organism that breaks-down dead organisms

What is a carnivore?

• Organism that consumes only producers

• Organism that breaks down dead organisms

• Organism that eats both plants and animals

• Organism that eats only "meat" other consumers