8442051
Descripción
Test por Gabrielle Gordon, actualizado hace más de 1 año
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Creado por Gabrielle Gordon
hace más de 7 años
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Pregunta 1
Pregunta
Which of the following is the largest?
Respuesta
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a hydrogen ion
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starch
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a mitochondrion
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a cell
Pregunta 2
Pregunta
Compared to when a solution is basic, when a solution is acidic it has...
Respuesta
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the same pH
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more free hydrogen ions
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fewer total hydrogen ions, both in free and in large molecules
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higher pH
Pregunta 3
Pregunta
The membranes that surround cells are made of many ...
Respuesta
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triglycerides
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nucleic acids
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starches
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micelles
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phospholipids
Pregunta 4
Pregunta
The polarity of water...
Respuesta
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means that protons are more often found by oxygen, not hydrogen
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makes water magnetic
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arises from the difference in electronegativity between oxygen and hydrogen
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allows water to make covalent bonds
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allows water to make hydrogen bonds
Pregunta 5
Pregunta
The polysaccharide most likely to be a structural part of a plant is
Respuesta
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glycogen
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cellulose
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ATP
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chitin
Pregunta 6
Pregunta
The fatty acid tails of phospholipids are...
Respuesta
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hydrophilic
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made of steroids
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hydrophobic
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facing inside the cell
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made of glycerol
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joined to the head by glycerol
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facing outside the cell
Pregunta 7
Pregunta
Insulin receptors are proteins in the membranes of cells. When insulin binds to the receptor it changes the shape of the receptor. The shape change activates a response in the cell. You are studying a new protein that no one has studied before. You find out your protein has the same shape as the insulin receptor. Based on this information, you would predict that your new protein has...
Respuesta
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a similar function to proteins with different shapes
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no function-- the protein is denatured
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a similar function to the known insulin receptors
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a similar protein to the hydrophilic proteins inside the cells
Pregunta 8
Pregunta
Pasteur studied germ hypothesis when the spontaneous generation hypothesis was still popular. He sterilized broth in a swan neck flask, and then waited to see if living organisms grew. With the swan neck intact, he observed that when he waited he saw...
Respuesta
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no bacterial growth
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bacterial growth
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data supporting the germ hypothesis
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data contradicting the germ hypothesis
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data supporting the spontaneous generation hypothesis
Pregunta 9
Pregunta
Which type of bond holds two different water molecules to each other, or the two halves of a DNA double helix together?
Respuesta
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non-polar covalent bonds
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ionic bonds
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hydrogen bonds
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double covalent bonds
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polar covalent bonds
Pregunta 10
Pregunta
Which two are made of monomers and held together with covalent bonds?
Respuesta
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nucleic acids
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all acids
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water
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proteins
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starches
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