Download Cellular Movement and Cell Energy Worksheets

Name: __________________________________ Date: ____________ Period: ______
Cellular Transportation and Respiration Notes
Moving Cellular Material
Passive Transport:

A cell membrane is _______________, which means that it allows only certain substances to
___________ or ________________ a cell.

Passive transport is the movement of substances through a cell membrane without using the cell’s
___________________.
1. Diffusion

Diffusion is the movement of substances from an area of _________________
concentration to an area of _______________ concentration.

Usually _______________ continues through a membrane until the
_______________ of a substance is the same on both sides of the membrane.
2. Osmosis – The Diffusion of Water

Osmosis is the diffusion of _______________ molecules only through a cell membrane.

If the concentration of water in the air surrounding a plant is less than the concentration of
water inside the plant’s vacuoles, water will diffuse into the ___________________
until the concentration of water are equal.

Facilitated diffusion allows molecules to pass through a cell membrane using
__________________ proteins.
Active Transport:

Active transport uses the cell’s ______________ to move substances through a cell membrane.

Active transport moves substance from areas of __________________ concentration to areas
of _______________ concentration.

A cell uses _________________ to take in a substance too big to pass through the cell
membrane.

A cell’s vesicles release their contents outside the cell during ______________.
Cell Size and Transport

For a cell to survive, its surface area must be large compared to its ________________.

As a cell _________________, its volume increases faster than its surface area.
Cells and Energy
Cellular Respiration

All _____________ things need energy to survive.

_________________ ___________________ is the process in which organisms break
down food to release _______________.

The first step of cellular respiration, called glycolysis, occurs in the ______________ of all cells.

During glycolysis ________________, a sugar, is broken into smaller molecules.

The second step of cellular respiration occurs in the _______________ of eukaryotic cells. This
step requires ___________________.

During the second step of cellular respiration, the smaller molecules made during ___________
are broken down. Large amounts of usable energy, called __________________, are produced.

__________________ and carbon dioxide (CO2) are two waste products that are given off
during the second step of cellular respiration.
Fermentation

_______________________ is the process that releases energy without using oxygen.

Eukaryotic and prokaryotic cells use fermentation to obtain energy from food when
_________________ levels are low.

Fermentation occurs in a cell’s ______________________.

Lactic-acid fermentation converts __________________ into ATP and a waste product called
lactic acid.

Some types of bacteria and yeasts make ATP during ___________________ fermentation. The
process produces _________________ and CO2.
Photosynthesis

Plants and some unicellular organisms obtain energy from ______________.

Water, _____________ _____________ (CO2), and ___________________ are involved
in photosynthesis.

In plants, light energy is absorbed by ________________ such as chlorophyll.

The chemical reactions of photosynthesis occur in _______________, the organelles in plant
cells that convert light energy into food.

Photosynthesis uses CO2 that is released during ________________ to make food energy and
release __________________.

When an organism eats plant material, it takes in ________________ energy. An organism’s
cells use _________________ released during photosynthesis.