One Nanogram Does Not Seem Like a Very Large Number

question 95

Multiple Choice

One nanogram does not seem like a very large number. How many magnesium atoms are there in 1.00 ng of magnesium?

• A)4.11 * 10^-11 atoms
• B)2.48 * 10¹³ atoms
• C)6.83 * 10^-35 atoms
• D)6.02 * 10¹⁴ atoms
• E)1.46 * 10³⁴ atoms

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Definitions:

Xylem Cells

Plant cells that form part of the xylem tissue, responsible for the transport of water and dissolved minerals from the roots to the rest of the plant.

Water Transport

The movement of water and nutrients through a plant, from the roots to the leaves, via xylem and phloem.

Monocotyledon

A group of flowering plants whose seeds typically contain one embryonic leaf, or cotyledon.

Eudicotyledon

A major group of flowering plants characterized by the presence of two seed leaves, or cotyledons, upon germination.