Biology Review

• 
• 
• 
• 

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-2

NGSS.MS-LS2-3

• 
• 
• 
• 

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

• Biosphere

• Organelle

• Ecosystem

• Community

Tags

NGSS.MS-LS2-2

Which statement is an example of how carbon moves through a food chain as part of the carbon cycle?

•  Producers release carbon dioxide, and consumers take it in. 

• Producers take in carbon dioxide, and consumers release it.

• Producers take in carbon from the soil, and they release it when they decompose.

• Producers release carbon into the soil, and consumers take it in from the soil.

Tags

NGSS.MS-LS2-3

The giant octopus lays 20,000 to 100,000 fertilized eggs. After hatching, most octopuses become prey to larger marine organisms, and less than 5% will reach adulthood to reproduce. One benefit of the giant octopus laying many eggs is to — 

•  increase the average body size for surviving individuals to avoid predation 

• decrease competition between different octopus species to maintain resources in the population

•  increase the chance that more individuals will survive to maintain the population

• decrease the likelihood of offspring being consumed by predators

Students construct a graphic organizer to illustrate the different levels of biological organization.

Which terms does the X represent?

• cell

• organism

• ecosystem

• biosphere

The San Marcos salamander, Eurycea nana, is a light reddish-brown translucent salamander about 2–5 cm in length. E. nana is found only in Spring Lake and a portion of the San Marcos River.

Which human activity would most likely decrease the ability of the salamanders to survive?

• Increasing water consumption that decreases the flow of clean water from the springs that

  feed the river

• Public transportation that reduces the number of automobiles that contribute to pollution

  runoff into the river

• Tourism that helps fund the educational programs related to river ecosystem conservation

• The addition of a new food source into the river that limits competition for resources

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-5

In a Central Texas grassland, the producers incorporate 12,000 kJ of energy from the sun into their tissues. About how much energy would be incorporated into the tissues of herbivores?

• 12,000 kJ

• 1,200 kJ

• 10,800 kJ

• 1,080 kJ

Tags

NGSS.MS-LS2-3

After a wheat field is cleared, wild grasses and weeds begin growing. This process is considered —

• primary succession because pioneer species appear 

• primary succession because there are no large trees

• secondary succession because soil is already present

• secondary succession because the field contains inorganic matter

What are homologous structures?

• different ATP synthesis mechanisms

• DNA similarities

• different bone structures

• similar bone structures in different species (evidence of common ancestor)

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3