1.Of the five characteristics of living things, which one is required for the species to survive but does not have to apply to an individual?(1 point)

Question

Responses

reproduction

use of energy to function

response to the environment

growth and change over a life cycle

2.Plant cells can use energy from the sun to make food. Animal cells cannot. Which organelle is responsible for this difference between plant and animal cells?(1 point)
Responses

plasma membrane

central vacuole

chloroplast

cell wall

3.Which statement about plasma membranes is correct?(1 point)
Responses

Both plant cells and animal cells have flexible plasma membranes.

Plant cells have cell walls instead of plasma membranes.

Animal cells have cell membranes instead of plasma membranes.

Plant cells have rigid plasma membranes.

4.Which organelle processes sugar?(1 point)
Responses

nucleus

endoplasmic reticulum

central vacuole

mitochondrion

Answer 1

Here are the responses to your questions:

1. Of the five characteristics of living things, which one is required for the species to survive but does not have to apply to an individual?

   • Response: reproduction

2. Plant cells can use energy from the sun to make food. Animal cells cannot. Which organelle is responsible for this difference between plant and animal cells?

   • Response: chloroplast

3. Which statement about plasma membranes is correct?

   • Response: Both plant cells and animal cells have flexible plasma membranes.

4. Which organelle processes sugar?

   • Response: mitochondrion

Feel free to ask if you need further clarification!

Answer 2

What is the function of the plasma membrane? (1 point)
Responses

It helps plants maintain their shape.
It helps plants maintain their shape.

It helps recognize other cells.
It helps recognize other cells.

It helps filter waste inside the cell.
It helps filter waste inside the cell.

It contains hereditary material.

Answer 3

The correct response regarding the function of the plasma membrane is:

It helps recognize other cells.

While the plasma membrane does play roles related to maintaining cell shape and filtering substances in and out of the cell, its primary functions include providing a barrier between the internal cell environment and the external environment, as well as facilitating communication and recognition between cells through receptor proteins.

Answer 4

How are leaf cells and root cells different? (1 point)
Responses

Leaf cells can absorb nutrients from the air, but root cells require soil to absorb nutrients.
Leaf cells can absorb nutrients from the air, but root cells require soil to absorb nutrients.

Leaf cells have chloroplasts, but root cells do not.
Leaf cells have chloroplasts, but root cells do not.

Leaf cells have nuclei, but root cells do not.
Leaf cells have nuclei, but root cells do not.

Leaf cells can reproduce, but root cells cannot.

Answer 5

The correct response regarding how leaf cells and root cells are different is:

Leaf cells have chloroplasts, but root cells do not.

Leaf cells contain chloroplasts that allow them to perform photosynthesis, converting sunlight into energy. Root cells, on the other hand, typically do not have chloroplasts because they are primarily responsible for absorbing water and nutrients from the soil.

Answer 6

Of these things in an environment, which one is a living thing?(1 point)
Responses

water (river)
water (river)

soil (clay)
soil (clay)

air (wind)
air (wind)

fungus (mushroom)

Answer 7

The correct response is:

fungus (mushroom)

Fungi, including mushrooms, are considered living things, as they are made up of cells, grow, reproduce, and respond to their environment. The other options—water, soil, and air—are non-living components of an environment.

Answer 8

What made the discovery of cells possible?(1 point)
Responses

the study of viruses and bacteria
the study of viruses and bacteria

the invention of the microscope
the invention of the microscope

the observation of cells by Hooke and Pasteur
the observation of cells by Hooke and Pasteur

the use of magnifying glasses

Answer 9

The correct response is:

the invention of the microscope

The invention of the microscope was crucial for the discovery of cells, as it allowed scientists to observe them for the first time. While Robert Hooke is notable for his observations of cells and their structure, it was the development of the microscope that made those observations possible.

Answer 10

If a particular cell is known to be round and incapable of producing its own food, which one of these organelles would you assume the cell must have?(1 point)
Responses

central vacuole
central vacuole

plasma membrane
plasma membrane

chloroplast
chloroplast

cell wall

Answer 11

The correct response is:

plasma membrane

If the cell is round and incapable of producing its own food, it suggests that the cell is likely an animal cell (or a similar type of cell that does not perform photosynthesis). All cells, including animal cells, have a plasma membrane that serves as a barrier to regulate what enters and exits the cell.

Chloroplasts are specifically found in plant cells and are responsible for photosynthesis, which this cell cannot perform. Central vacuoles are typically found in plant cells as well, and a cell wall is also characteristic of plant cells and some prokaryotes, so they would not apply to a round, non-food-producing cell.