BIOL 1406 Practice Quiz 1 - Question and Answer Flashcards

A set of question-and-answer flashcards covering key concepts from BIOL 1406 Practice Quiz 1, pages 1-2.

What level of organization includes a group of like individuals in a given area, such as a colony of sea lions?

Population.

Give an example of an organelle.

Mitochondrion.

Write the species name for humans in the correct binomial format.

Homo sapiens.

What domain do we belong to?

Eukarya.

What kingdom includes yeast and mushrooms?

Fungi.

List a good characteristic of a hypothesis.

It is testable (and falsifiable).

What is given to the control group in an experiment that has no active ingredient?

Placebo.

What are positive subatomic particles called?

Protons.

What is the chemical symbol for potassium?

K.

What are positive ions called in general? Do they lose or gain electrons?

Cations; they lose electrons.

Give an example of an anion.

Chloride ion (Cl−).

Acids always release what kind of ions?

Hydrogen ions (H+).

bonds form when electrons are shared. Give an example of one.

Covalent bonds; for example, the H–H bond in H2.

are atoms of the same element with different numbers of neutrons.

Isotopes.

pH = ? (a formula)

pH = -log[H+].

What is the pH of human blood?

About 7.35–7.45.

What kind of bonds form between water molecules?

Hydrogen bonds.

What do covalent bonds look like in a structural formula of a molecule?

A line (dash) between atoms representing a shared pair of electrons.

How many valence electrons in Carbon (Atomic Number 6)? How many bonds?

4 valence electrons; typically forms 4 bonds.

What kind of ion can Sodium (Atomic Number 11) form?

A positive ion (Na+), a cation.