Biology STAAR Released Test

Which change would most likely cause a decrease in the frog population?

• An increase in the ladybird population

• An increase in the snake population 

• An increase in the butterfly population 

• An increase in the number of producers 

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which statement supports the answer to Part A?

• Plants provide ecosystems with energy.

• Fish maintain water quality in ecosystems.

• Ecosystems with more species are more sustainable.

• Ecosystems with fewer species are better able to survive.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-5

Which of the following is a function of the cell membrane?

• To produce energy for the cell

• To control the movement of substances in and out of the cell

• To store genetic information

• To synthesize proteins

Tags

NGSS.MS-LS1-2

What is the primary role of chlorophyll in photosynthesis?

• To absorb water

• To absorb sunlight

• To release oxygen

• To produce glucose

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which organelle is known as the powerhouse of the cell?

• Nucleus

• Ribosome

• Mitochondria

• Endoplasmic reticulum

Tags

NGSS.MS-LS1-2

In a food chain, which of the following organisms is typically a producer?

• Lion

• Grass

• Eagle

• Frog

Tags

NGSS.MS-LS2-3

What is the basic unit of life?

• Organ

• Tissue

• Cell

• Organism

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

Which process is responsible for the genetic variation observed in sexually reproducing organisms?

• Mitosis

• Meiosis

• Binary fission

• Budding

Tags

NGSS.MS-LS3-2

What is the main purpose of the scientific method?

• To prove a hypothesis

• To systematically investigate phenomena

• To create new theories

• To memorize scientific facts

Tags

NGSS.MS-PS1-2

NGSS.MS-PS2-2

Which of the following best describes an ecosystem?

• A group of similar species living in an area

• The physical environment where an organism lives

• A community of interacting organisms and their environment

• A single species and its food sources

Tags

NGSS.MS-LS2-3