The six elements that make up 99.9% of all living things include 1. C, K, O, N, Ca and S 2. C, P, S, H, O and N 3. C, P, K, I, O and N 4. N, O, P, H, S and T 75% 15% 1 C, K, O, N, Ca and S C, P, S, H, O and N C, P, K, I, O and N N, O, P, H, S and T
Which chemical elements would you expect to find in abundance in a living cell? 1. hydrogen, neon, argon 2. carbon, oxygen, hydrogen 3. iron, magnesium, calcium 4. sodium, potassium, sulfur hydrogen, neon, argon carbon, oxygen, hydrogen 10 iron, magnesium, calcium sodium, potassium, sulfur
What are the building blocks of protein molecules? 1. Polymers 2. fatty acids 3. glucose molecules 4. amino acids 9 1 1. Polymers fatty acids glucose molecules amino acids
Fats are important energy storage compounds because they: 1. readily breakdown to form glucose 2. provide immediate energy 3. contain more energy per gram than carbohydrates or proteins 4. are liquid at normal body temperatures 5. don't require nitrogen 2. provide immediate e... 1. readily breakdown to... 32% 16% contain more energy pe... 53% are liquid at normal bod... don't require nitrogen
Which of the following describes the function of proteins? 1. energy formation and storage 2. energy used in muscles and reaction 3. structural use and enzyme formation 4. heredity and genetic code carriers energy formation and s... 3 energy used in muscles... 55% structural use and enzy.. 15% heredity and genetic co..
What is the most common food storage compound in plants? 1. Glucose 4 2. Starch 3. Sucrose 4. Cellulose 2 25% 5. fat 15% Glucose Starch Sucrose Cellulose fat
The properties of water make it very valuable to living systems. Which of the following statements regarding water is not true? 1. it modifies temperature extremes 2. it makes up about 5 of your body 3. it is the greatest solvent in the world 4. it expands slightly when it freezes 5. it covers more than 75% of the earth's surface it makes up about 5 o... it modifies temperature... 25% 55% it is the greatest solvent.. 1 it covers more than 75%.. it expands slightly when i... 1
Which of the following statements are 1. they are lipids 2. they will react with most body chemicals 3. they can only be used once 4. they usually slow down reactions and prevent overheating of the cells 5. they usually speed up chemical reactions true of enzymes? they are lipids 5% they will react with mos... they can only be used once they usually slow down... 25% they usually speed up c... 7
Which characteristic of water allows it to support the weight of objects more dense than water? 1. capillary action 2. surface tension 3. specific heat 4. Evaporation 5. adhesion 9 1 capillary action surface tension specific heat Evaporation adhesion
Water is polar in nature. To be polar 1. be very cold and difficult to warm up. 2. freeze easily and boil rapidly 3. have positive and negative charged ends 4. have a low heat capacity means to: be very cold and difficul... 5% freeze easily and boil ra... have positive and negati.. 95% have a low heat capacity
Which one of the following is not an organic molecule found in living 1. Protein 2. Nucleic acid 3. Carbohydrate 4. Sodium chloride 5. Lipid organisms? 85% 5% 5% 5% Protein Nucleic acid Carbohydrate Sodium chloride Lipid
Which combination of particle and charge is correct? 1. Proton:positively charged 2. Electron:positively charged 3. Neutron: negatively charged 4. Proton: negatively charged 6 2 1 1 Proton:positively charged Electron:positively charged Neutron: negatively ch... Proton: negatively charged
Which of the following molecules is made up of glycerol and fatty acids? 1. Sugars 2. Starches 3. Lipids 4. Nucleic acids 5. proteins 16% 68% 5% 5% 5% Sugars Starches Lipids Nucleic acids proteins
An acidic solution could have a ph of 1. 7 2. 10 3. 3 4. 14 84% 16% 7 10 3 14
The three particles in an atom are 1. Protrons, neutrons, ions 2. Protons, neutrons, electrons 3. Proteins, lipids, carbohydrates 4. Isotopes, electrons, neutrons Protrons, neutrons, ions Protons, neutrons, elect... 10 Proteins, lipids, carbohy... Isotopes, electrons, neu...
What two types of molecules combine to form cell membranes? 1. Nucleic acids and carbohydrates 2. Phospholipids and proteins 3. Carbohydrates and proteins 4. Polysaccharides and RNA 65% 2 1 Nucleic acids... Phospholipids... Carbohydrates... 5% Polysaccharide...
Glycogen, Cellulose, and Starch are all 1. proteins 2. monosaccharides 3. Nucleic acids 4. polysaccharides 25% 55% 15% 5% proteins monosaccharide... Nucleic acids polysaccharide...
When salt is dissolved in water, the water is the 1. Reactant 2. Solution 3. Solute 4. Solvent 75% 1 15% Reactant Solution Solute Solvent
A substance with a ph of 8 is 1. An acid 2. A base 3. Both an acid and a base 4. neutral 5% 89% 5% An acid A base Both an acid and a base neutral
How much more acidic is a substance with a ph of 4 compared to a 1. 10 times 2. 20 times 3. 100 times 4. 1000 times substance with a ph of 6? 5 45% 5% 10 times 20 times 100 times 1000 times
Which of the following is an example of a catalyst? 1. An enzyme 5 2. Sodium Chloride 3. Water 3 4. Carbon Dioxide 15% 5% An enzyme Sodium Chloride Water Carbon Dioxide
Which part of a phospholipid molecule is non-polar and hydrophobic? 1. The lipid tails 2. The glycerol/phosphate head 7 3 The lipid tail... The glycerol/p...