GB Unit 1 Test

A liquid culture of E.coli bacteria growing in a test tube would be most accurately referred to as

• a population
• a tissue
• a community
• an organism

True or False. Water is the universal solvent for chemical reactions in all living organisms.

• True
• False

This atom in its unbound state has four valence electrons. These electrons readily form single, double, and even triple bonds among themselves to become stable. This atom is ___.

• oxygen
• hydrogen
• nitrogen
• carbon

Which of the following cellular roles does NOT involve proteins?

• Uptake and export of materials into and out of the cell.
• Providing shape, structure and movement.
• Acting as a blueprint for the characteristics of that cell.
• Catalyzing the formation of new molecules in the cell.

Tags

NGSS.HS-LS1-1

True or False. A hypothesis is proven when predictions based on it are experimentally verified.

• True
• False

Tags

NGSS.HS-PS1-2

The atomic number of an atom is

• the number of protons in the atom.
• the number of protons and electrons in the atom.
• the number of protons and neutrons in the atom.
• the number of neutrons in the atom

The idea that all living organisms are composed of cells is known as the

• central dogma
• germ theory
• cell theory
• scientific theory

Two molecules with identical molecular formulas but different structures are called

• polymers
• isotopes
• monomers
• isomers

True or False. The standard approach for scientists to test their ideas is to make predictions that can be experimentally tested.

• True
• False

Tags

NGSS.HS-PS1-2

NGSS.HS-LS1-3

When grouping organisms, which classification is most general for a particular type of organism?

• Kingdom
• Phylum
• Order
• Class