Penn Foster Intro to Biology Final Exam
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Which of the following accurately describes the structure of an atom? - ✔✔Protons an neutrons are in
the nucleus with the electrons orbiting around the nucleus
When two atoms transfer electrons, the bond formed is called... - ✔✔An Ionic bond
Fats and steroids are examples of - ✔✔lipids
which macromolecule is responsible for carrying the genetic material in a cell? - ✔✔Nucleic acid
Jelly Like structure that helps hold all other cellular organelles in place within a cell. - ✔✔Cytoplasm.
Golgi apparatus - ✔✔Assists in the early stages of protein and lipid production
The movement of ions and other atomic or molecular substances across cell membranes without the
need for energy input is known as - ✔✔passive transport.
When two liquids have the same osmotic pressure they're said to be - ✔✔isotonic
When does facilitated diffusion occur> - ✔✔When certain large molecules can't move through the
membrane without the help of channel proteins.
A molecule will become an ion when which of the following happens? - ✔✔When it loses or gains an
electron.
The term voltage describes - ✔✔the electrical potential difference between two points.
PF 1
