3425213
Descripción
Test por Lisa Polillo, actualizado hace más de 1 año
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Creado por Lisa Polillo
hace casi 9 años
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Pregunta 1
Pregunta
An element is...
Respuesta
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any substance that cannot be broken down into simpler substances.
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made up of only one kind of atom.
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a really good source of protein.
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listed by atomic symbol, element name and atomic number in the Periodic Table of Elements.
Pregunta 2
Pregunta
What 2 elements make up 99% of the air we breathe?
Respuesta
Pregunta 3
Pregunta
Compounds that contain carbon are called [blank_start]organic[blank_end] compounds.
Respuesta
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organic
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inorganic
Pregunta 4
Pregunta
Carbohydrates are
Respuesta
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made of carbon, hydrogen and oxygen.
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energy-rich organic compounds.
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found in cell walls and cell membranes.
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sugars and starches.
Pregunta 5
Pregunta
Proteins are
Respuesta
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made of carbon, hydrogen, oxygen, nitrogen and sometimes sulfur.
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made up of smaller molecules called amino acids.
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meat, fish, eggs, and nuts.
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oils, fats and waxes.
Pregunta 6
Pregunta
The proteins known as enzymes perform important functions in the chemical reactions that take place in cells. Enzymes speed up chemical reactions in living things.
Respuesta
- True
- False
Pregunta 7
Pregunta
Nucleic Acids
Respuesta
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are made of carbon, oxygen, hydrogen, nitrogen and phosphorus.
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contain the instructions that cells need to carry out all the functions of life.
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are found in the nucleus of a cell.
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taste bitter.
Pregunta 8
Pregunta
[blank_start]DNA[blank_end] is the genetic material that carries information about an organism and is passed from parent to offspring.
Respuesta
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DNA
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RNA
Pregunta 9
Pregunta
RNA plays an important role in the production of carbohydrates and is found in the cytoplasm as well as the nucleus.
Respuesta
- True
- False
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