Mg2 Unit 9 Study Guide
Lesson 1
Key Questions
1. Mg2+ has 10 electrons
2. Given that the half life of the radioisotope carbon -14 is 5730 years, it would not be useful in dating bones that are over a million years old. After 40 000 years of age less than 1% of the 14C is left in the bone and thus it is not useful for determining the exact age beyond that.
3. Hydrolysis - A chemical reaction where a chemical is broken down by a reaction with water. Hydrolysis is important for the digestion of food, making it biologically important.
1. Condensation - The opposite of hydrolysis, when two molecules form one. In most biochemical reactions water is produced when the molecules join. Condensation reactions are used to build muscle tissue making them biologically important.
2. Oxidation and …show more content…
Muscle cells require more mitochondria than fat cells because muscle cells are constantly using energy, where as fat cells store energy until it is needed. Mitochondria organelles produce energy.
6. a) Active transport requires energy to operate. Diffusion is passive transport and does not require energy.
b) Active transport moves molecules up the concentration gradient, low to high concentration. Diffusion goes down the concentration gradient, high to low concentration.
7. Receptor-mediated endocytosis unlike Phagocytosis can aquire bulk quantities of specific substances, It can also recognize and bind molecules before they are engulfed. Phagocytosis only engulfs large, solid particles.
8. The phospholipid bilayer has a hydrophylic exterior and a hydrophobic interior, it does not allow polar charged molecules to pass through but it does allow small uncharged molecules to pass through. There are proteins and cholesterol in the membrane. Since it is semi-fluid at low temperatures cholesterol can keep the phospholipids apart, where at higher temperatures it brings the phospholipids together, stabilizing the
Key Questions
1. Mg2+ has 10 electrons
2. Given that the half life of the radioisotope carbon -14 is 5730 years, it would not be useful in dating bones that are over a million years old. After 40 000 years of age less than 1% of the 14C is left in the bone and thus it is not useful for determining the exact age beyond that.
3. Hydrolysis - A chemical reaction where a chemical is broken down by a reaction with water. Hydrolysis is important for the digestion of food, making it biologically important.
1. Condensation - The opposite of hydrolysis, when two molecules form one. In most biochemical reactions water is produced when the molecules join. Condensation reactions are used to build muscle tissue making them biologically important.
2. Oxidation and …show more content…
Muscle cells require more mitochondria than fat cells because muscle cells are constantly using energy, where as fat cells store energy until it is needed. Mitochondria organelles produce energy.
6. a) Active transport requires energy to operate. Diffusion is passive transport and does not require energy.
b) Active transport moves molecules up the concentration gradient, low to high concentration. Diffusion goes down the concentration gradient, high to low concentration.
7. Receptor-mediated endocytosis unlike Phagocytosis can aquire bulk quantities of specific substances, It can also recognize and bind molecules before they are engulfed. Phagocytosis only engulfs large, solid particles.
8. The phospholipid bilayer has a hydrophylic exterior and a hydrophobic interior, it does not allow polar charged molecules to pass through but it does allow small uncharged molecules to pass through. There are proteins and cholesterol in the membrane. Since it is semi-fluid at low temperatures cholesterol can keep the phospholipids apart, where at higher temperatures it brings the phospholipids together, stabilizing the