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Cells: The Basic Units of Life: Mastery Test
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Select the correct answer from each drop-down menu.
Use the following image to complete the sentences below.
w
Z
X
D. The structure labeled as W is the
The structure labeled as X is the
D. so the cell in the image is a
D. so the cell in the image is a
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6. in the dna double helix, how are the two strands of dna held together? a. chemical bonds between base pairs hold the two strands of dna together. b. hydrogen bonds between the base pairs hold the two strands of dna together. c. hydrogen bonds between sugar groups and phosphate groups hold the two strands of dna together. d. chemical bonds between sugar groups and phosphate groups hold the two strands of dna together.

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Why did rutherford say that bombarding atoms with particles was like "playing with marbles" what