please help for points and brainliest.

1.

Which involves transport proteins?


passive transport


osmosis


diffusion


active transport


2.

Which describes a selectively permeable membrane?


allows only certain substances to pass through


allows large quantities of every substance to pass through


permits only certain substances to leave but all to enter


permits all substances to pass through in small quantities


3.

Which describes starches and sugars?


proteins


enzymes


lipids


carbohydrates


4.Use the diagram to answer the question.


What would occur if some of the red blood cells were placed in beaker C? Recall that red blood cells normally float in plasma.


The concentration of water inside the cells would be less than outside, so the cells would swell.


The concentration of water inside the cells would be greater than outside, so the cells would shrink.


The concentration of water inside and outside the cells would be equal, so no osmosis would occur.


The concentration of water inside and outside the cells would be equal, so no diffusion would occur.




5.

Which describes DNA and RNA?


carbohydrates


nucleic acids


proteins


lipids



6.

Which term refers to the movement of molecules from an area of higher concentration to an area of lower concentration?


concentration


diffusion


collision


active transport



7.

Active transport requires a cell to use _____.


diffusion


collisions


its own energy


osmosis




8.

Which describes a method of active transport?


Cells rely on external energy to move molecules.


Proteins carry molecules into or out of the cell.


Molecules move into or out of a cell due to concentration.


Water moves through the cell membrane by osmosis.




9.

What is a function of water in a cell?


helping the cell move and grow


producing lipids and carbohydrates


preventing rapid temperature changes


assisting in the production of proteins




10.

Which describes engulfing?


active transport in which the cell membrane forms a new vacuole


passive transport in which the cell membrane surrounds a particle


active transport in which proteins move molecules in and out of the cell


passive transport in which water moves through the cell membrane




11.

Why is water important for a cell?


Water is the main ingredient in DNA.


All proteins are made of water.


Water is an essential organic compound.


Most chemical reactions in cells require water.




12.

Which is involved in engulfing?


Golgi bodies


cell membrane


transport proteins


endoplasmic reticulum




13.

Sugar molecules can combine with one another to form large molecules called _____.


proteins


enzymes


lipids


starches




14.

The diffusion of _____ molecules through a selectively permeable membrane is called osmosis.


water


oxygen


protein


carbon dioxide



15.


Use the diagram to answer the question.



What would happen if some of the red blood cells were placed in beaker A?


Water would move into the cells by diffusion, and the cells would swell.


Water would move out of the cells by diffusion, and the cells would shrink.


Water would move out of the cells by osmosis, and the cells would shrink.


Water would move into the cells by osmosis, and the cells would swell.