Satellite imagery can be used to better understand certain changes on Earth. Identify the best use of satellite imagery from the list.(1 point)

The best use of satellite imagery from the list is detecting a change in regional forest cover.

Which of the following is an accurate definition of biogeography?(1 point)

Responses

the study of the geographic distribution of living organisms and the characteristics of the environments in which they live

the number of various living species that exist in a certain area

the study of the purposeful clearing of a forested landscape of all, or selected, trees by humans

he study of changing climate

The accurate definition of biogeography is: the study of the geographic distribution of living organisms and the characteristics of the environments in which they live.

Question

Analyze which statement best captures how thawing permafrost changes Earth’s physical geography.(1 point)
Responses

Thawing permafrost is leading to an increase in mammal populations.

Thawing permafrost leads to the creation of lakes and swamps where there were none.

Thawing permafrost leads to grasses and lichens pushing out shrub species.

Thawing permafrost leads to fewer beaver ponds.

The statement "Thawing permafrost leads to the creation of lakes and swamps where there were none" best captures how thawing permafrost changes Earth's physical geography.

How has thawing permafrost affected the people who live in areas where permafrost occurs?(1 point)

Responses

Entire villages are being forced to relocate because of thawing permafrost.

With fewer beaver ponds, people are finding it difficult to capture beavers for human uses.

More ice cellars are able to be built because of thawing permafrost.

People are finding it easier to hunt on thawing permafrost.

The statement "Entire villages are being forced to relocate because of thawing permafrost" best describes how thawing permafrost has affected the people who live in areas where permafrost occurs.

Which statement best analyzes the impact of the Burmese python on the Florida Everglades region?(1 point)

Responses

The growth of the Burmese python population has resulted in a severe decline in the reproductive success of turtles.

The growth of the Burmese python population has resulted in severe declines in native mammal species.

The Burmese python, though an invasive species, has not had a great impact on the Florida Everglades region because it is easy to detect and remove.

The Burmese python has caused minimal ecological change in the Florida Everglades region because its food preference is not dominant in the Everglades.

The statement "The growth of the Burmese python population has resulted in severe declines in native mammal species" best analyzes the impact of the Burmese python on the Florida Everglades region.

Why are lysosomes important to the health of cells?(1 point)

Responses

They break down worn-out cell parts that are no longer needed.

They allow cell organelles to move freely through the cell as needed.

They move proteins around the cell.

They create cell boundaries and make cells rigid.

The correct response is: "They break down worn-out cell parts that are no longer needed." Lysosomes are responsible for the breakdown of cellular waste and debris, helping to maintain the health and cleanliness of the cell.

Which of the following organelles provide structure and rigidity to a plant cell?(1 point)

Responses

cell wall

chloroplast

cell membrane

ribosome

The correct response is: "cell wall." The cell wall is a rigid structure found in plant cells that provides support, protection, and shape to the cell. Chloroplasts are responsible for photosynthesis, the cell membrane regulates the movement of substances in and out of the cell, and ribosomes are involved in protein synthesis but do not provide structure and rigidity to the cell.

What would happen to a plant if the chloroplasts in its cells became damaged?(1 point)

Responses

The plant would be unable to make protein.

The plant would not make glucose and oxygen.

The plant would not have a rigid structure.

The plant would be unable to reproduce.

The correct response is: "The plant would not make glucose and oxygen." Chloroplasts are responsible for photosynthesis, the process through which plants convert sunlight into glucose and release oxygen. If the chloroplasts in a plant's cells became damaged, the plant would be unable to perform photosynthesis efficiently, resulting in a lack of glucose production and oxygen release.

Using your understanding of the function of chloroplasts and specialized cells, infer why plant root cells lack chloroplasts.(1 point)

Responses

Root cells have many mitochondria.

Roots are underground and are not exposed to sunlight.

Roots require fewer nutrients.

Root cells have two central vacuoles.

The correct response is: "Roots are underground and are not exposed to sunlight." Chloroplasts are responsible for photosynthesis, which requires sunlight as an energy source. Since root cells are located underground and do not have access to direct sunlight, they do not require chloroplasts for photosynthesis. Instead, root cells primarily function in nutrient absorption and anchoring the plant in the soil.

What is the main difference between prokaryotic and eukaryotic cells?(1 point)

Responses

Prokaryotes lack ribosomes to make proteins.

Prokaryotes lack a cell membrane on the outside.

Prokaryotes lack membrane-bound organelles.

Prokaryotes use RNA instead of DNA.

The correct response is: "Prokaryotes lack membrane-bound organelles." The main difference between prokaryotic and eukaryotic cells is that prokaryotic cells lack membrane-bound organelles, such as a nucleus, mitochondria, endoplasmic reticulum, and Golgi apparatus. In contrast, eukaryotic cells contain membrane-bound organelles that perform specific functions within the cell.