The Effect of Light on Photosynthesis
Plants need and use the same light of foods as animals but while
animals have to eat other things to get their food, plants make it
themselves. The way they do this is called photosynthesis. The other
ways that plants are different from animals, such as having leaves and
root or being green, they are all linked with photosynthesis. In
photosynthesis, plants take carbon dioxide from the air and water from
the soil, and use the energy from the sunlight to convert them into
food. The first food they make is glucose but that can later be
changed into other food types. The sunlight is absorbed by the green
pigment chlorophyll.
Carbon hydrates contain the elements carbon, hydrogen, and oxygen as
in glucose. The carbon and oxygen could be supplied by carbon dioxide
from the air. In addition, the hydrogen could come from the water in
the soil. The nitrogen and sulphur needed for making protein could
come from nitrates and sulphates in the soil.
This builds up of complex food molecules from simpler substances this
is called synthesis. It needs enzymes and energy to make it happen.
Enzymes are presented in the plants cells and the energy for the first
stages in the synthesis comes from sunlight, this is called
photosynthesis. And that there is a green substance and chlorophyll.
Chlorophyll is in the chloroplasts of the plant cells. Chlorophyll
absorbs sunlight and makes the energy from sunlight.
LIGHT
[IMAGE]Carbon Dioxide + Water Glucose + Oxygen
CHLOROPHYLL
Where does photosynthesis occur?
Photosynthesis takes place mainly in the leaves, although it can occur
in any cells that contain green chlorophyll. Leaves are adapted to
make them very efficient at photosynthesis.
Leaves are broad, so as much light as possible can be absorbed. A
leave is thin, so it is easy carbon dioxide to diffuse in to each of
the cells in the centre of the leaf. It also contains green
chlorophyll, in the chloroplasts, which absorbs the light energy.
This shows that there could be three variables in this experiment, carbon dioxide, water and light energy. So in our case the variable light energy (light intensity) will be used. The equation also shows that if there is more light energy then more glucose and oxygen will be produced.
at the small end of the axis to see a more reliable pattern. I could
Experiment #1: The purpose of this experiment is to investigate the effects of baking soda and light intensity on the rate of photosynthesis of green spinach leave through the observation of floating disk.
The Effect of Light Intensity on the Rate of Oxygen Production in a Plant While Photosynthesis is Taking Place
is left out which makes it harder to get a clear picture of what is
An Analysis and Evaluation of Data from Photosynthesis Experiments Graph analysis This is my analysis for the investigation in to the affect of light intensity on the rate of photosynthesis to the Canadian pondweed, elodea. In the results the pattern is that when the light intensity is higher the readings are generally higher. On the graph the less the light intensity the lower the gradient of the curve. the equation for the photosynthesis process is; CO2 + 2H2O + Light Energy = =
Only the smallest particles of the coal dust make it past the nose, mouth, and throat into the alveoli found deep in the lungs. The alveoli, or air sacs, are responsible for exchanging gases with the blood, and are located at the end of each bronchiole. Microphages, a type of blood cell, gather foreign particles and carry them to where they can either be swallowed or coughed out. If too much dust is inhaled over a long period of time, some dust-laden microphages and particles collect permanently in the lungs causing black lung disease.
To make the test fair I will use the same amount of water and the leaf
It is when much needed oxygen is obtained by the body in order for respiration to take place and the waste CO2 is taken out of the body. In us mammals, the exchange takes place in the lungs which contain a large number of alveoli. These are sponge-like structures in which the diffusion takes place. They are highly adapted to diffuse the gases as they give a large surface area for exchange of the gases.
The Effect of Light Intensity on Photosynthesis Of Elodea Canadensis Introduction I wanted to find out how much the light intensity affected the Photosynthesis in Elodea Camadensa. I decided to do this by measuring the amount of oxygen created during photosynthesis. Photosynthesis is the procedure all plants go through to make food. This process uses Carbon dioxide, water and light energy. It produces Oxygen and Glucose.
Here, deep in the lungs, oxygen diffuses through the alveoli walls and into the blood in the capillaries and gaseous waste products in the blood—mainly carbon dioxide—diffuse through the capillary walls and into the alveoli. But if something prevents the oxygen from reaching t...
When you breathe in, air containing carbon dioxide (CO2) and oxygen (O2) it moves down your trachea; a tunnel containing cartilage and smooth tissue. Air then travels through two hollow tubes called bronchi; narrow branches lined with smooth muscle, mucosal and ringed cartilage to support the structure. The bronchi divide out into smaller tunnels called bronchioles; are small branches 0.5-1mm, lined with muscular walls to help dilate and constrict the airway. At the end of the bronchioles are little air sacs called alveoli; which assist in gas exchange of O2 and CO2. (Eldridge, 2016) Towards the end of alveoli are small blood vessel capillaries. O2 is moved through the blood stream through theses small blood vessels (capillaries) at the end of the alveoli and the CO2 is then exhaled. (RolandMedically,
Investigating the Effect of Light Intensity on Photosynthesis in a Pondweed Aim: To investigate how the rate of photosynthesis changes at different light intensities, with a pondweed. Prediction: I predict that the oxygen bubbles will decrease when the lamp is further away from the measuring cylinder, because light intensity is a factor of photosynthesis. The plant may stop photosynthesising when the pondweed is at the furthest distance from the lamp (8cm). Without light, the plant will stop the photosynthesising process, because, light is a limited factor. However once a particular light intensity is reached the rate of photosynthesis stays constant, even if the light intensity is the greatest.
Photosynthesis is a process in which plants and other organisms convert the light energy from the sun or any other source into chemical energy that can be released to fuel an organism’s activities. During this reaction, carbon dioxide and water are converted into glucose and oxygen. This process takes place in leaf cells which contain chloroplasts and the reaction requires light energy from the sun, which is absorbed by a green substance called chlorophyll. The plants absorb the water through their roots from the earth and carbon dioxide through their leaves.
An Experiment to Investigate the Effect of Light Intensity on the Rate of Photosynthesis. Introduction Photosynthetics take place in the chloroplasts of green plant cells. It can produce simple sugars using carbon dioxide and water causing the release of sugar and oxygen. The chemical equation of photosynthesis is: [ IMAGE ] 6CO 2 + 6H20 C 6 H12 O 6 + 6O2 It has been proven many times that plants need light to be able to photosynthesize, so you can say that without light the plant would neither photosynthesize nor survive.