1. One way science and technology enriches our lives is through medical breakthroughs that make it possible for people to live longer, healthier lives. Science and technology enrich our lives by eliminating mundane work. Science and technology also enrich our lives by making it easier for us to communicate with each other using various forms of communication including cell phones and email.
2. There are five main components of a Eukaryotic cell.
The plasma membrane surrounds the cell
The nucleus and its major components which are chromosomes, chromatin, and the nuclear matrix - a fibrillar network.
Organelles including mitochondria and chloroplasts which are involved in energy metabolism.
The endoplasmic reticulum and the Golgi apparatus transport proteins
Eukaryotic cells contain a cyroskeleton which is a network of protein filaments extending throughout the cytoplasm
3. Explain do muscles get sore when one runs a long distance. Muscle soreness is due to muscle fatigue. This discomfort is caused by chemical waste building up in the muscles during exercise. During a long run, energy is obtained from glucose. Glucose is transported to muscles from circulating blood. Blood glucose levels can drop to relatively low levels during a long run, and fatigue or soreness occurs because there is not enough blood glucose available to compensate for the depleted muscle glycogen.
4. Diffusion is or involves movement of a substance from an area of high concentration to an area of lower concentration. Osmosis is the passage of water from a region of high water concentration through a semi-permeable membrane to a region of low water concentration.
The three conditions of osmosis that can exist between a cell and its environment or surrounding are:
If the medium surrounding the cell has a higher water concentration than the cell, that cell will gain water by osmosis.
If the medium is exactly the same water con...