B4

Question 1

What is the word equation for photosynthesis? What is the balanced symbol equation for photosynthesis?

Answer 1

Carbon Dioxide + Water (+ light energy) —> Glucose + Oxygen
6CO^2 + 6H^2O (+ light energy) —> C^6H^12O^6 + 6O^2.
^ = Subscript

Question 2

Photosynthesis uses energy from sunlight to build large ______ Molecules.

Answer 2

Food.

Question 3

What three factors affect photosynthesis?

Answer 3

Temperature, Carbon Dioxide and Light Intensity.

Question 4

What is the equation for photosynthesis?

Answer 4

Carbon dioxide + water +(light energy) —> glucose + oxygen.

Question 5

What is an enzyme? Where are they made?

Answer 5

Enzymes are are proteins that speed up chemical reactions. They are made in the cytoplasm, similar to amino acids.

Question 6

What “Mechanism” do enzymes use? What does this mean?

Answer 6

Lock and Key, the substrate (The chemical that the enzyme work with) must be the correct shape to fit the active site of the enzyme.

Question 7

The rate of an enzyme-controlled reaction increases as the _______ increases.

Answer 7

Temperature.

Question 8

However high _______ and the extremes of __ levels stops the enzyme from changing shape of the active site.

Answer 8

Temperatures, pH.

Question 9

What does aerobic respiration require?

Answer 9

Oxygen.

Question 10

What is the word equation for aerobic respiration? What is the balanced symbol equation for this?

Answer 10

Glucose + Oxygen —> Carbon Dioxide + Water (+ energy release).
C^6H^12O^6 + 6O^2 —> 6CO^2 + 6H^2O (+ energy release).
^ = Subscript

Question 11

Which two main type of cells use aerobic respiration?

Answer 11

Animal cells and Plant cells (and some microorganisms).

Question 12

Where does anaerobic respiration take place?

Answer 12

Where oxygen is absent (or in very low concentration).

Question 13

What is the anaerobic respiration word equation for animal cells (and some bacteria)?

Answer 13

Glucose —> Lactic Acid (+ energy released).

Question 14

What is the anaerobic respiration word equation for plant cells and some microorganisms (such as yeast)?

Answer 14

Glucose —> Ethanol + Carbon Dioxide (+ energy released).

Question 15

What is the symbol equation for ethanol?

Answer 15

C^2H^6O.

^ = Subscript

Question 16

The cell _____ regulates what enters and leaves the cell. It allows ___ and ___ to move freely but it is a barrier to other substances.

Answer 16

Membrane, Gases and Water.

Question 17

____ (a special form of diffusion) is the overall movement of water, through a partially ______ membrane, from a dilute to a more ______ solution.

Answer 17

Osmosis, Permeable, Concentrated.

Question 18

Oxygen and Carbon Dioxide move into and out of leaves by ______ - the passive movement of molecules from an area for ___ concentraton to ___ concentration.

Answer 18

Diffusion, High to Low.

Question 19

_____ Transport of molecules uses energy to transport molecules across the cell _____.
It is required to move _____ into plant roots.

Answer 19

Active, Membrane, Nitrates.

Question 20

What are the four main features of Animal Cells?

Answer 20

Nucleus, Cytoplasm, a Cell Membrane and Mitochondria.

Question 21

What three main features do Plant Cells have that Animal Cells do not?

Answer 21

Chloroplasts, Cell Wall, Vacuole.

Question 22

Microbial cells have a cell _____ and a cell ____. Cells of bacteria have no _____, but circular ___ in their cytoplasm. Yeast has no _____ but has _______, which bacteria does not.

Answer 22

Membrane, Wall, Nucleus, DNA, Nucleus, Mitochondria.

Question 23

In a rate of photosynthesis graph, when the line levels of there is a _______ ____.

Answer 23

Limiting Factor.