Biology STAAR 2021 Released Practice
Quiz by Sherri Powell
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- Q1
When the skin comes in contact with an irritant, receptors in the skin send signals to the spinal cord. The signal is then sent to the brain for processing, and the individual begins to scratchthe affected area.
Which two systems are most likely interacting when a person experiences itching caused by a skin irritant?
Circulatory and excretory
Digestive and muscular
Integumentary and nervous
30s - Q2
The defenses of two flightless birds that live in different habitats are shown. How do the wings of the Gentoo penguin and the legs of the common ostrich provide an advantage in their habitat?
Allows them to control their body temperature
Allows them to be camouflaged in their environments
Allows them to escape from predators
Allows them to find prey
30sBIOL.12a - Q3
Which property is shared by the cells of all living things?
The cells have chromosomes that are located inside a membrane-bound nucleus.
The cells contain DNA composed of adenine, thymine, guanine, and cytosine.
The cells rely on mitochondria to carry out aerobic cellular respiration.
The cells are surrounded by a phospholipid bilayer and a cell wall made of cellulose.
20s - Q4
Which statement best explains how the cell cycle is important to the life cycle of the frog?
It prevents overproduction of frog offspring.
It allows frogs to grow, develop, and reproduce.
It enables frogs to produce tadpoles that are clones.
It ensures the best adapted frogs survive and pass on traits to offspring.
30s - Q5
Which statement describes the process of osmosis in an animal cell?
Ions move across the plasma membrane until the inside of the cell has a higher concentration of positive charges.
Enzymes move across the plasma membrane until the cell has completed metabolism.
Sugar molecules move across the plasma membrane until the cell has enough energy to grow in size and divide.
Water molecules move across the plasma membrane until solute concentrations are equal on both sides of the membrane.
20s - Q6
Which body systems interact most directly in the three listed processes?
Circulatory, Digestive, Endocrine
Digestive, Integumentary, Muscular
Circulatory, Excretory, Immune
Excretory, Immune, Muscular
15s - Q7
Based on this food web, which organism occupies multiple trophic levels?
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