Science Chapter 2

DNA and RNA belong to the group of organic compounds known as _______.

Most substances must be dissolved in _________to be used by cells.

Oxygen molecules move across cell membranes through a process called _______.

The diffusion of _______molecules is called osmosis.

Unlike passive transport, active transport requires the cell to use________.

The larger a cell is, the more ________ it takes for molecules to move through its

Chloroplasts contain a pigment called _______that captures the energy in light.

Small openings called ________ allow carbon dioxide to enter a leaf

Plants make their own food using energy that comes from the ______.

Almost all living things depend on the process of _________to supply them with the energy they need.

Plants make their own food using energy that comes from the ______.

Almost all living things depend on the process of _________to supply them with the energy they need.

The energy from glucose is released in the process of __________ .

The main difference between respiration and fermentation is that respiration uses ____________ to obtain energy from food.

The process in which yeasts break down sugars and produce carbon dioxide and alcohol is called ____________ fermentation.

Plants make their own food using energy that comes from the ______.

Almost all living things depend on the process of _________to supply them with the energy they need.

The energy from glucose is released in the process of __________ .

The main difference between respiration and fermentation is that respiration uses____________ to obtain energy from food.

The process in which yeasts break down sugars and produce carbon dioxide and alcohol is called ____________ fermentation.

A cell’s nucleus divides to form two identical nuclei during the stage of the cell cycle known as ______________.

A DNA molecule is often called a __________ because it twists like the threads of a screw.

The sides of the DNA ladder are made of molecules of deoxyribose and ______.

questionDuring respiration, glucose is combined with __________ , releasing energy.

questionThe products of respiration are energy, carbon dioxide, and _________.

The final stage of the cell cycle, during which the cytoplasm divides, is called ___________.

All organic compounds contain the element _______________.

Sugar molecules can combine to form large molecules called________.

_____ are proteins that speed up chemical reactions in living things.

DNA and RNA are ________.

Most chemical reactions in cells require ____________.

The _____ in a cell helps keep its size and shape.

All organic compounds contain the element _______________.

Sugar molecules can combine to form large molecules called________.

_____ are proteins that speed up chemical reactions in living things.

DNA and RNA are ________.

Most chemical reactions in cells require ____________.

The _____ in a cell helps keep its size and shape.

_____________ refers to the movement of molecules from an area of higher concentration to an area of lower concentration.

____________ refers to the movement of water molecules through a selectively permeable membrane.

_____________ refers to the movement of materials through a cell membrane without using energy.

__________refers to the movement of materials through a cell membrane when energy is required.

________ and ________ are the products of photosynthesis.

____________captures energy from sunlight during photosynthesis.

During respiration

The stage of respiration that releases most of the energy in glucose occurs in the _____________.

Respiration in most cells requires ____________.

How are photosynthesis and respiration related?

Respiration and photosynthesis keep the levels of carbon dioxide and oxygen in the atmosphere ______.

___________ refers to the production of energy by a cell without using oxygen.

What causes a form of alcoholic fermentation?

What causes lactic-acid fermentation?

The stage of respiration that releases most of the energy in glucose occurs in the _____________.

Respiration in most cells requires ____________.

How are photosynthesis and respiration related?

Respiration and photosynthesis keep the levels of carbon dioxide and oxygen in the atmosphere ______.

___________ refers to the production of energy by a cell without using oxygen.

What causes a form of alcoholic fermentation?

What causes lactic-acid fermentation?

During respiration

The stage of respiration that releases most of the energy in glucose occurs in the _____________.""

Respiration in most cells requires ____________.""

How are photosynthesis and respiration related?""

Respiration and photosynthesis keep the levels of carbon dioxide and oxygen in the atmosphere ______.""

___________ refers to the production of energy by a cell without using oxygen.""

What causes a form of alcoholic fermentation?""

What causes lactic-acid fermentation?""

During respiration

The stage of respiration that releases most of the energy in glucose occurs in the _____________.""

Respiration in most cells requires ____________.""

How are photosynthesis and respiration related?""

Respiration and photosynthesis keep the levels of carbon dioxide and oxygen in the atmosphere ______.""

___________ refers to the production of energy by a cell without using oxygen.""

What causes a form of alcoholic fermentation?""

What causes lactic-acid fermentation?""

During respiration, ___________ is broken down, releasing energy

The stage of respiration that releases most of the energy in glucose occurs in the _____________.

Respiration in most cells requires ____________.

How are photosynthesis and respiration related?

Respiration and photosynthesis keep the levels of carbon dioxide and oxygen in the atmosphere ______.

___________ refers to the production of energy by a cell without using oxygen.

What causes a form of alcoholic fermentation?

What causes lactic-acid fermentation?

________ is the stage during which the cell’s nucleus divides into two new nuclei.

What are chromatids?

What forms around the chromatids during mitosis?

What happens during cytokinesis in animal cells?

Each rung of the DNA ladder is made of ______.

During DNA replication, adenine (A) always pairs with __________.