A Boat Travels Upstream and After One Hour Has Gone

question 4

Multiple Choice

A boat travels upstream and after one hour has gone 10 km.The boat next travels downstream and after one hour has gone 14 km.If the boat's speed relative to the water is constant,what is the speed of the current in the river?

• A)1 km/h
• B)2 km/h
• C)3 km/h
• D)4 km/h

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Definitions:

Bacterial Cells

Single-celled microorganisms that lack a distinct nucleus and are found everywhere in nature, with roles from fermentation to causing diseases.

Palindromic Sequence

A sequence of DNA or RNA that is the same when read forwards or backwards.

DNA Sequence

The precise order of nucleotides within a DNA molecule, which determines the genetic information carried by that molecule.

Genomic Library

A collection of DNA fragments that represent the entire genome of an organism, stored in vectors and maintained in host cells for study.