Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is the scientific method in order? | Observation, question, hypothesis, experiment, conclusion
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| What is scientific fact? | Discrete, small bits of information based on observation.
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| What is scientific law? | Describes how nature acts under certain conditions without explaining why.
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| What is scientific theory? | Explains how nature works. General set of principles that has explanatory power.
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| What is the hierarchical organization of life in order? | Atom, molecules, organelles, cells, tissue, organ, organ system, organism, population, community, biosphere
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| What are the eight things that define life? | Energy, response to the environment, constant internal environment, inherited information, reproduction, one or many cells, evolve from other living things: have a common ancestor, highly organized.
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| What is matter? | Anything that takes up space and has mass.
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| What is an atom made out of? | And outer electron shell and a nucleus.
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| What are the three subatomic particles with their charges? | Protons â positive, neutrons â neutral, electrons â negative
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| What is an element? | One kind of atom packed together
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| What determines the atomic number? | The number of protons
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| What determines the atomic weight? | The number of protons and neutrons added together
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| What is the most abundant element? | Oxygen
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| What causes an isotope? | When an atom has a different number of neutrons in the nucleus.
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| How are covalent bonds formed? | When two atoms share electrons
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| What are ionic bonds? | When an atom gives away electrons and another atom is there to accept electrons
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| What percentage of earths surface is ocean water? | 71%
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| What percentage of the human body weight comes from water? | 66%
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| What are hydrophilic compounds? | Compounds that interact with water, water loving compounds, ionic compounds like sodium chloride.
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| What are hydrophobic compounds? | Compounds that do not interact with water, water fearing compounds, non-polar covalent molecules.
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| What is an acid? | An acid is a substance that releases H ions when put in water.
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| What is a base? | A base is a substance that releases hydroxide ions in water.
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| What does pH stand for? | Power of hydrogen.
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| What levels of pH are acids and bases? | Acids: 0â7 bases: 7â14
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| What is organic chemistry? | A branch of chemistry that study compounds with carbon as the central element.
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| What are functional groups? | A group of atoms that gives a special property to a carbon-based molecules.
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| Is carboxyl or hydroxyl an alcohol? | Hydroxyl
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| What are the monomers and polymers for nucleic acids? | Nucleotides and nucleic acids
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| What are the monomers and polymers for carbohydrates? | Monosaccharides and polysaccharides
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| What are the monomers and polymers for lipids? | Trick question there are none.ð
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| What are the monomers and polymers for proteins? | Amino acids and polypeptides.
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| What is hydrolysis? | To split with water
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| What is dehydration synthesis? | The opposite of hydrolysis.
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| What are carbohydrates made of? | Carbon, hydrogen, oxygen.
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| True or false: sucrose is a monosaccharide. | False
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| True or false: starch is a polysaccharide. | True
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| True or false: animals store glycogen as sugar in the liver. | True
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| True or false: cellulose is found in the exoskeleton of insects. | False
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| What are lipids made out of? | Carbon, hydrogen, oxygen but with more hydrogen compared to oxygen.
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| True or false: lipids are insoluble in water. | True
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| What are the four types of lipids? | Glycerides, steroids, phospholipids, and waxes
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| What is the difference between saturated and unsaturated fatty acids? | Saturated fatty acids do not have double bonds and are solid at room temperature.
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| What makes up a phospholipid? | One glycerol +2 fatty acids +1 phosphate group +1 nitrogen containing group.
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| Where are waxes usually found? | On the surface of plants as cuticles.
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| How many amino acids are there? | 20
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| What are the levels of protein structure? | Primary, secondary, tertiary, quarternary
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| What are lipoproteins? | Lipids and proteins
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| Which has a higher level of lipids: LDL or HDL? | LDL
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| What are glycoproteins? | Carbohydrates and proteins
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| True or false: glycoproteins make up most of the cell structure receptors. | True
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| What does DNA stand for? | Deoxyribonucleic acid
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| What does RNA stand for? | Ribonucleic acid.
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| What are the four types of nucleotides? | Adenine, cytosine, guanine, thymine
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| What nucleotide is specific to RNA? | Uracil
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| What three parts make up a nucleic acid? | A phosphate group, sugar, a base.
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| What connects the parts of nucleic acids? | Hydrogen bonds
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| What is a nutrient? | A substance, contained in food, that does one of these three: provide energy, provide a structural building block for the body, help regulate a physical process in the body.
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| What are the six classes of nutrients? | Water, vitamins, carbohydrates, minerals, proteins, lipids
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| What are minerals? | Chemical elements needed by the body either to form bodily functions or to facilitate chemical reactions.
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| True or false: all minerals are elements. | True
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| What are vitamins? | Chemical compounds that are needed in strictly small quantities to facilitate chemical reactions.
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| What is a nutritional calorie? | The amount of energy it takes to raise the temperature of 1000 g of water by 1°C.
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| True or false: each gram of carbohydrates and proteins yield 9 cal of energy while each gram of lipids yield 4 calories. | False
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| How many of the 20 amino acids needed for protein synthesis can be produced by the body? | 11
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| Which of these two are indigestible carbs: starches or fibers? | Fibers
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| What are empty calories? | Calories not accompanied by vitamins or minerals.
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| True or false: fibers cause the cholesterol level in the blood to rise and heighten the glycemic load. | False
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| Which form of lipids are healthier: saturated or unsaturated? | Unsaturated
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| Which kind of fats should be avoided? | Trans fats
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| True or false: food pyramids tell you exactly how much food you should eat. | False: food pyramids give you a guideline.
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Created by:
Lauren sternes
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