Lab 7: Photosynthesis

Question 0

What is photosynthesis??

Answer 0

The process by which plants, algae, and some bacteria use the energy from the sun to produce glucose. Usually uses water, thus releasing the oxygen. Associated with chlorophyll.

Question 1

Describe equation for photosynthesis??

Answer 1

Energy(sunlight)+6 CO2+6 H2O=
C6H12O6+6 O2

C6H12O6+6 O2=6 CO2+6 H2O+Energy(heat+work)

Question 2

What is cellular respiration??

Answer 2

The conversion of food molecules, releasing its chemical energy, which is then partially captured in the form of coenzyme ATP.

Question 3

Define chloroplast??

Answer 3

Plastid (small particles in the cytoplasm of plant cells and some animals containing pigment, starch, oil, or protein) containing chlorophyll and other pigments involved in photosynthesis.

Question 4

Define chlorophyll?

Answer 4

4naturally occurring pigments found in photosynthetic organisms.

Question 5

What are the two stages of photosynthesis??

Answer 5

1: Light Dependent Process
2: Light Independent Process(Dark Reactions)

Question 6

Define Light Dependent Process??

Answer 6

Requiring the direct energy of light to make energy carrier molecules used in next phase.

Question 7

Define Light Independent Process (Dark Reaction)??

Answer 7

When the products of Light Reaction are used to make covalent bonds of CHO.

Question 8

Define ATP??

Answer 8

Adenosine Triphospate. A nucleotide derived from Adenosine. Transports chemical energy within cells.

Question 9

Define Aerobic Respiration??

Answer 9

The catabolic reactions and processes in the cells of organisms to convert biochemical energy into ATP requiring O2 as an electron acceptor (oxidizing agent) and then release waste products.

Question 10

List the processes of aerobic respiration??

Answer 10

1: Glycolysis=the metabolic pathway that converts glucose into pyruvate, freeing energy in the form of ATP and the reduced NADH. Occurs in cytosol.
2: Krebs (Citric) Cycle= chemical reaction used by all aerobic organisms to generate energy through the oxidation of acetate derived from food products.
3: Electron Transport Chain=the coupling of electron transfer between electron donor(NADH) and electron acceptor(O2) with the transfer of H+ protons across a membrane. This results in a electrochemical proton gradient used to generate chemical energy (ATP).

Question 11

List the process of Aenerobic Respiration??

Answer 11

1: Glycolysis: the metabolic pathway that converts glucose into pyruvate, freeing energy in the form of ATP and the reduced NADH. Occurs in cytosol.
2: Fermentation= metabolic process converting sugars into acids, gases, and/or alcohol in oxygen-starved cells. In humans, it NADH oxidizes pyruvate into lactic acid, recycling the NAD.

Question 12

Define phenyl red??

Answer 12

pH indicator. Changes from pink/red to orange/yellow due to CO2 de solving into carbolic acid, thus lowering water pH.

Question 13

Define Sodium Azide??

Answer 13

A mitochondrial inhibitor.

Question 14

What are the dependent/independent variables of investigation 3??

Answer 14

Independent: energy source
Dependent: amount of gas produced.

Question 15

Define Global Warming??

Answer 15

The Earths gradual increase in temp due to large amounts of Greenhouse Gases we create.

Question 16

Define Deforestation??

Answer 16

The removal of forest where the land may be used for non forest needs increasing CO2.

Question 17

Define Moving Average??

Answer 17

a series of averages of different subsets of the full data set.

Question 18

Define Biomass??

Answer 18

Biological material derived from living, or recently living things, which can be converted and used directly or indirectly.

Question 19

Define Anaerobic respiration??

Answer 19

Cellular respiration without oxygen. Pyruvate is then converted to Lactic Acid through fermentation.

Question 20

Define fermentation??

Answer 20

Metabolic process after glycolysis where NADH cannot continue forth due to lack of oxygen. The NADH oxidizes, and reduces pyruvate into acid, gas, or alcohol.

Question 21

Define Positive Control??

Answer 21

A well established test used to determine the effectiveness of a new test.

Question 22

Negative control??

Answer 22

Group where no phenomenon is expected, ensuring there is no effect where there shouldn’t be.

Question 23

Elodea??

Answer 23

Water weed native to North America.