Question

hich two cellular structures help cells move around?



A.


nuclei and cell walls


B.


chloroplasts and endomembrane systems


C.


cilia and flagella


D.


ribosomes and mitochondria

Answer 1

Which phrase best describes osmosis?


A.
the movement of molecules from an area of low concentration to an area of high concentration


B.
the movement of water molecules across a selectively permeable membrane


C.
the process of synthesizing DNA


D.
the physical process where the cytoplasm divides

Answer 2

Which phrase best describes cellular respiration?



A.


the process where there is a movement of water across a membrane


B.


the physical division of the cell's cytoplasm


C.


the process that cells use to obtain energy from food


D.


the process where there is a movement of molecules to balance out their distribution

Answer 3

This illustration drawn by a scientist is based on observations of a cell under a microscope. Which statement best describes the telophase of mitosis?

Examining cells



A.


In this stage, the nuclear membranes form around the chromosomes, forming two new nuclei.


B.


In this stage, the sister chromatids pull apart and migrate toward opposite ends of the cell.


C.


In this stage, the pairs of sister chromatids attach to the spindle fiber.


D.


In this stage, the membrane breaks down, freeing the chromosomes.

Answer 4

A scientist is studying a unicellular organism. The organism normally looks like image A. Then the scientist places the cell in two different solutions. In the first solution, the cell changes to look like image B. In the second solution, it changes to look like image C.



Which statement describes the solution and process that would cause a cell to look like the cell labeled B?





A.
Too much sugar water moved out of the cell.


B.
Too much water moved into the cell.


C.
Too much saline moved into the cell.


D.
Too much water moved out of the cell.

Answer 5

The small circles represent molecules of oxygen. Which best describes how the oxygen molecules will move?





A.
Oxygen will move from an area of lower concentration (inside the cell) to an area of higher concentration (outside the cell).


B.
Oxygen will move from an area of lower concentration (outside the cell) to an area of higher concentration (inside the cell).


C.
Oxygen will move from an area of higher concentration (inside the cell) to an area of lower concentration (outside the cell).


D.
Oxygen will diffuse from an area of higher concentration (outside the cell) to an area of lower concentration (inside the cell).

Answer 6

well

Answer 7

@zachary01 this is why i hate people

Answer 8

I know right