B4

Photosynthesis

Photosynthesis

________ is endothermic which means energy is transferred from the environment in the process.

source of white light

A(n) ________ is placed at a specific distance from the pondweed.

Carbon dioxide

________ is one of the raw materials needed for photosynthesis.

inverse square law

The ________ means that if you halve the distance the light intensity will be four times greater and if you third the distance, the light intensity will be four times smaller and if you treble the distance, the light intensity will be nine times smaller.

nitrate ions

To produce proteins, plants also use ________ that are absorbed from the soil.

Anaerobic respiration

________ in yeast cells is called fermentation and has economic importance in the manufacture of bread and alcoholic drinks.

amino acids

Used to produce ________ for protein synthesis- Glucose is combined with nitrate ions (absorbed from the soil) to make ________ which are then made into proteins.

Energy

________ is transferred to the chloroplasts from the environment by light.

Greenhouses

________ help to trap the suns heat and make sure that the temperature doesnt become limiting.

Respiration

________ is exothermic- it transfers energy to the environment.

lactic acid

Blood flowing through the muscles transports the ________ to the liver where it is converted back into glucose.

Light intensity

________ decreases in proportion to the square of the distance.

rate of photosynthesis

The ________ is affected by light intensity and CO2 concentration.

Metabolism

________ is the sum of all the reactions in a cell or the body.

Oxygen debt

________ is the amount of extra oxygen the body needs after exercise to react with the accumulated lactic acid and remove it from the cells.

insufficient oxygen

If ________ is supplied anaerobic respiration takes place in muscles.

maximum rate of photosynthesis

Limiting factors are important in the economics of enhancing the conditions in greenhouses to gain the ________ while still maintaining profit.

breakdown of glucose

Respiration is the process of transferring energy from the ________ and it goes on in every cell in your body continuously.

Starch

________ is insoluble which makes it much better for storing than glucose- a cell with lots of glucose in would draw in loads of water and swell up.

Canadian pondweed

________ can be used to measure the effect of light intensity on the rate of photosynthesis.

oxidation of glucose

As the ________ is incomplete in anaerobic respiration much less energy is transferred than in aerobic respiration.

heart rate

The ________, breathing rate and breath volume increase during exercise to supply the muscles with more oxygenated blood.

incomplete oxidation of glucose causes a

The ________ build up of lactic acid and creates an oxygen debt.

Photosynthesis

________ uses energy to change carbon dioxide and water into glucose and oxygen.

light intensity

Distance and ________ are inversely proportional to each other.

It takes place in chloroplasts in green plant cells

they contain pigments like chlorophyll that absorb light

The rate at which the pondweed produces oxygen corresponds to the rate at which it is photosynthesising

the faster the rate of rate of oxygen production the faster the rate of photosynthesis

Used for respiration

this transfers energy from glucose which enables the plants to convert the rest of the glucose into various other useful substances

Converted into insoluble starch for storage

glucose is turned into starch and stored in roots, stems and leaves, ready for use when photosynthesis is not happening like in the winter

Starch is insoluble which makes it much better for storing than glucose

a cell with lots of glucose in would draw in loads of water and swell up

Used to produce fat or oil for storage

Glucose is turned into lipids for storing in seeds

Used to produce cellulose which strengthens the cell wall

Glucose is turned into cellulose for making strong plant cell walls

Used to produce amino acids for protein synthesis

Glucose is combined with nitrate ions (absorbed from the soil) to make amino acids which are then made into proteins

Respiration is exothermic

it transfers energy to the environment