Answer:
B. The membrane lets certain substances move across it freely, while others must move through a “gate”.
Explanation:
Selective permeability is a property of cellular membranes that only allows certain molecules to enter or exit the cell. This is important for the cell to maintain its internal order irrespective of the changes to the environment. For example, water, ions, glucose and carbon dioxide may need to be imported or exported from the cell depending on its metabolic activity. Similarly, signaling molecules may need to enter the cell and proteins may need to be released into the extracellular matrix. The presence of a selectively permeable membrane allows the cell to exercise control over the quantum, timing and rate of movement of these molecules.
Mike discovered that the product of cellular respiration are the raw materials of Photosynthesis while the products of photosynthesis served as the raw materials for cellular respiration.
He also discovered that respiration is a catabolic process while photosynthesis is an anabolic process.
Another interesting fact seen by Mike is, the respiration releases energy while photosynthesis takes in energy.
Explanation:
- In the equation of cellular respiration , we can see that glucose and oxygen are utilized in the mitochondrion to produce carbon dioxide , water and chemical energy in the form of ATP.
- Glucose breaks down during cellular respiration .
- Again if we look at the chemical equation for photosynthesis in the chloroplast, we find that Carbon dioxide,which was produced during respiration is utilized along with water in presence of light energy to give out oxygen and Sugar (glucose)
The altered protein affected the function of the cell membrane. The cell membrane which contain a bilayer control the movement of substance in and out of the cell and organelles. Due to this it is selective permeable to ion and organic molecules.
Organs , fins is the correct answer
Cough, runny nose, inflamed eyes, sore throat, fever, and a red, skin rash.
