Pregunta 1
Pregunta
Which of the following is an observation that could be made about the mammoth?
Respuesta
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The mammoth was related to the elephant
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The mammoth’s tusks were curved and pointed
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The mammoth’s tusks were used for protection
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The mammoth was a slow moving animal
Pregunta 2
Pregunta
The process by which organisms keep their internal conditions constant is called...
Respuesta
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evolution
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metabolism
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phoytosynthesis
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homeostasis
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response to stimuli
Pregunta 3
Pregunta
Which of the following characteristics of life best explains why birds fly south for the winter?
Respuesta
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Living things respond to their environment
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Living things maintain internal balance
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Living things are made of units called cells
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Living things pass DNA from parent to offspring
Pregunta 4
Pregunta
Which of the following shows the levels of cellular organization from least complex to most complex?
Respuesta
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a. tissue → cell → organ
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b. organ → cell → tissue
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c. organ → tissue → cell
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d. cell → tissue → organ
Pregunta 5
Pregunta
What do all eukaryotic and prokaryotic organisms have in common?
Respuesta
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a. A nucleus
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b. Membrane bound organelles
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c. They are multicellular organisms
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d. Ribosomes and a plasma membrane
Pregunta 6
Pregunta
Choose the answer that best describes this cell.
Respuesta
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a. This is a prokaryotic cell because it has a nucleus
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b. This is a plant cell because it has a cell wall and large vacuole
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c. This is eukaryotic cell because it lacks a nucleolus
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d. This is an animal cell because it has ribosomes
Pregunta 7
Pregunta
Adrian believes if he increases the protein in his diet he will gain muscle mass. What is Adrian’s dependent variable?
Respuesta
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a. The amount of protein in his diet
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b. The amount of bread in his diet
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c. The amount of muscle mass he gains
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d. The amount he works out
Pregunta 8
Pregunta
Analyze the experimental design setup. Determine the independent variable.
Pregunta 9
Pregunta
Water sticks to other water molecules. This can be explained by the property of ...
Respuesta
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cohesion
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adhesion
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high specific heat
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change in density
Pregunta 10
Pregunta
Water is a polar molecule because
Respuesta
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a. it contains two hydrogen atoms for each oxygen atom.
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b. both ends carry a positive charge.
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c. each end of the molecule has a different charge.
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d. both ends carry a negative charge.
Pregunta 11
Pregunta
Water is separated into dipoles. Which end carries a negative charge?
Respuesta
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the oxygen atom
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the hydrogen atoms
Pregunta 12
Pregunta
Why is carbon uniquely suited to build organic macromolecules
Respuesta
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a. Carbon can form four covalent bonds to form complex compounds
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b. Carbon can only bond with other carbon atoms
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c. Carbon is able to form 8 covalent bonds
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d. Carbon is not suited to build organic macromolecules
Pregunta 13
Pregunta
Which of the following are the most common elements in organic compounds.
Respuesta
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carbon
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helium
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copper
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oxygen
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potassium
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hydrogen
Pregunta 14
Pregunta
Through which process do large polymers gain the parts of water in order to split into a monomer and smaller polymer?
Respuesta
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photosynthesis
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cellular respiration
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dehydration synthesis
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hydrolysis
Pregunta 15
Pregunta
Why do cells need carbohydrates?
Respuesta
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a. Carbs provide cells with energy
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b. Carbs provide cells with protein
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c. Carbs provide cells with potassium
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d. None of the above
Pregunta 16
Pregunta
Which of the following describes the structure of a carbohydrate?
Respuesta
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a. A long hydrocarbon chain connected to a carboxyl group
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b. Carbon rings made for hydrogen, carbon, and oxygen in 1:2:1 ratio
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c. A central carbon with 3 groups and one hydrogen attached
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d. A double helix made from repeating nucleotides
Pregunta 17
Pregunta
Which of the following describes the role of a phospholipid?
Respuesta
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a. Phospholipids store short term energy for the cell
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b. Phospholipids catalyze chemical reactions
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c. Phospholipids form the cell’s membrane
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d. Phospholipids carry hereditary information
Pregunta 18
Pregunta
Which of the following diagram represents a molecule that stores hereditary information?
Pregunta 19
Pregunta
Isobel’s doctor told her she is feeling weak because her diet is too low in protein. What advice would you give Isobel in order to improve her health?
Respuesta
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Add more oil and butter to your diet.
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Add more bread, rice, and vegetables to your diet.
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Add more fruit and pasta to your diet.
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Add more beans, nuts, and meat to your diet.
Pregunta 20
Pregunta
What is the monomer of a protein?
Respuesta
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monosaccharide
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fatty acid
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nucleotide
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amino acid
Pregunta 21
Pregunta
What is the monomer of a lipid?
Respuesta
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fatty acid
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amino acid
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monosaccharide
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nucleic acid
Pregunta 22
Pregunta
What is the polymer of monosaccharide?
Respuesta
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polysaccharide
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lipid
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polypeptide chain
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nucleotide