Building Blocks of Life Answers
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The Venn diagram compares organic and inorganic compounds.
A
Made from phosphorus and oxygenB
Not made from living thingsC
Made from every element except carbonD
Not made from elements2
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Which example is most likely an inorganic compound?
A
methane, which is made of carbon and hydrogenB
glucose, which is a sugar made by plantsC
sodium chloride, which is a saltD
human DNA, which is a molecule in cells3
Which statement is true about inorganic compounds?
A
They are not made of atoms.B
They contain carbon.C
They are not made from living things.D
They are all elements.4
Aluminum is an element. Which best describes what makes up a sample of aluminum?
A
one kind of atomB
two different kinds of atomsC
all carbon-based atomsD
a carbon atom and non-carbon atoms5
Which element is the basis for all living things and can combine with other elements in many ways?
A
phosphorusB
carbonC
oxygenD
sulfur6
Which two elements make up water?
A
oxygen and phosphorusB
oxygen and hydrogenC
hydrogen and sulfurD
hydrogen and phosphorus7
Rebekah is studying a molecule and trying to determine if it is DNA or RNA. Which kind of molecule is she studying?
A
carbohydrateB
proteinC
nucleic acidD
lipid8
carbohydrateslipidsproteinsnucleic acids
A
carbohydratesB
lipidsC
proteinsD
nucleic acids9
Which best describes a molecule?
A
a unit made of different kinds of elementsB
a unit made of only one kind of elementC
a unit made of two or more atomsD
a unit made of a single atom10
The chart shows the percentage of different elements in the human body.
A
nitrogenB
hydrogenC
carbonD
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