Texas STAAR Biology

• Chemosynthetic bacteria and amphipods

• Zooplankton and mussels

• Ratfish and octopuses (should be octopi but I'm just copying TEA here)

• Galatheid crabs and zoarcid fish

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

A student is asked to draw a food web in which the same organism is a primary consumer as well as a secondary consumer. How should the organism be represented in the food web?

• The organism must have an arrow pointing form it to a tertiary consumer and another arrow pointing from it to a decomposer.

• The organism must have an arrow pointing from it to a secondary consumer and another arrow pointing to it from the top predator.

• The organism must have a n arrow pointing to it from a producer and another arrow pointing to it from a primary consumer.

• The organism must have an arrow pointing from it to a primary consumer and another arrow pointing away from it to a decomposer.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

• Less atmospheric carbon dioxide would be available to phytoplankton.

• Dissolved carbon dioxide gas in the ocean would increase because surface winds would cause a deeper circulation pattern, making more room for the gas

• Less carbon dioxide gas would be contained in the ocean because increasing precipitation would dilute the carbon entering the ocean

• Less carbon dioxide would be dissolved in the ocean because increasing atmospheric temperature would cause ocean temperatures to increase.

Tags

NGSS.MS-LS2-3

Scientists have observed many types of tropical fish moving beyond their traditional ocean ranges into waters that have historically been more temperate. These fish compete for food with native fish, consuming much from the kelp forests and beds of sea grass. The expansion of the ranges of tropical fish was most likely caused by-

• agricultural runoff that contributes to dead zones in the ocean

• global droughts that raise the salt concentration of ocean waters

• the rising temperatures of ocean waters

• acid rain pollution that lowers the pH of ocean water

Tags

NGSS.MS-ESS2-6

NGSS.MS-LS2-4

Roads are often built through forests for industrial purposes or as land is developed for residential and commercial needs. How would road construction through a forest most likely affect the ecosystem?

• Non-native species would replace native species

• The number of primary consumers would increase

• The natural succession of vegetation would change

• All producers would be eliminated from the community

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

• Air pollution

• Food production

• Oceanic evaporation

• Nonrenewable resources

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

• Rainfall patterns that increase freshwater runoff from terrestrial ecosystems

• Replacing coal-fired power plants with windmills

• Farming practices that reduce nitrate and phosphate applications

• Constructing efficient water recovery and treatment plants

Tags

NGSS.MS-ESS3-4

How did the enzyme affect the reaction?

• Increased the activation energy

• Increase the energy change

• Lowered the energy change

• Lowered the activation energy

Answer explanation

The enzyme lowered the activation energy required for the reaction to occur, making it easier for the reaction to proceed.

The image below represents a cell with a semipermeable membrane. The process of osmosis would explain the net movement of water into a cell if the initial percentage of

• protein was 35% inside the cell and 30% outside the cell.

• water was 95% inside the cell and 90% outside the cell.

• water was 90% inside the cell and 95% outside the cell

• protein was 30% inside the cell and 35% outside the cell.

Answer explanation

The correct choice is water was 90% inside the cell and 95% outside the cell because osmosis involves the movement of water from an area of lower solute concentration to an area of higher solute concentration.

Which of the following is correct about the events of the cell cycle?

• Little happens during the G₁ and G₂ phases of the cell cycle.

• DNA replicates during the S phase of interphase.

• Mitosis is usually the longest phase of the cell cycle when the cell is growing.

• Interphase consists of G₁, S, G2 phase and mitosis

Answer explanation

The correct statement is that DNA replicates during the S phase of interphase.

Tags

NGSS.HS-LS1-4