Bio. 4.2.1: Analyze photosynthesis/cellular respiration
- Photosynthesis is a process, mostly used by plants, that converts light energy,
which is primarily from the sun, into chemical energy and is stored into bonds
of sugar. - During photosynthesis, energy is released to make ATP.
- 6 CO2 + 12 H2O + photons → C6H12O6 + 6 O2 + 6 H2O
- (carbon dioxide + water + light energy → glucose + oxygen +
water). - In photosynthesis, the sun's light is absorbed in the chloroplast by
the chlorophyll (a green pigment that is responsible for supplying energy for
photosynthesis through the absorption of light) . This is how energy is
transferred. - Cellular Respiration is a process that cells go through in order to break up sugars into a form that can be used for energy.
- Energy is stored in the chemical bonds of glucose.
- In order for energy to be released, glucose is oxidized.
Virtual Lab Link: http://glencoe.mcgraw-hill.com/sites/dl/free/0078695104/383932/BL_25.html
Bio. 4.2.2: Active transport in homeostasis
Active transport is the movement of molecules across a cell membrane against its concentration gradient. It requires a cell to use the energy, unlike passive transport. Active transport can also allow substances that were lost in urine to be reabsorbed into the kidney before it's released; even though they move against the concentration gradient.
The amount of energy that an organism takes in is the exact same as the energy that is put out.
The amount of nutrients taken in would be equal to the amount of energy an organism uses. Whenever this is impossible, organisms often keep a steady balance by storing excess energy whenever nutrients are consumed.
During the summer, when plants grow the most, the energy is concentrated on producing fruit.
The lab below is a video on maintaining homeostasis and energy in the body.
Virtual Lab Link: http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa_pre_2011/homeo/homeosts.shtml
The amount of energy that an organism takes in is the exact same as the energy that is put out.
The amount of nutrients taken in would be equal to the amount of energy an organism uses. Whenever this is impossible, organisms often keep a steady balance by storing excess energy whenever nutrients are consumed.
During the summer, when plants grow the most, the energy is concentrated on producing fruit.
The lab below is a video on maintaining homeostasis and energy in the body.
Virtual Lab Link: http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa_pre_2011/homeo/homeosts.shtml