Abnormally folded proteins that cause normal proteins to midfold are called ____.

A) prions
B) nucleotides
C) peptides
D) polymers
E) triglycerides

If the hypothesis that protocells arose in a "RNA world" is correct, which of the following would be necessary to shift to a "DNA world"?

A) an enzyme or reaction capable of converting ribose to deoxyribose in nucleotides
B) enzymes for reverse transcription of RNA into DNA
C) new enzymes to replicate the DNA
D) new enzymes for transcribing DNA back to RNA
E) All of the answer choices list enzymes that would be necessary for a shift from an RNA world to a DNA world.

Which part of the respiratory system is composed of C-shaped cartilaginous rings and cilia?

A) pharynx
B) larynx
C) trachea
D) bronchioles
E) alveoli

The midbrain is the center for visual and auditory reflexes.

All of the following are true of lipids, except

A) amino acids are a type of lipid.
B) some lipids are used for cellular structure.
C) triglycerides are also called fats.
D) lipids provide some cellular energy.
E) phospholipids are a type of lipid.

How do marine polychaetes use chitin-hardened body parts?

A) as chitin-reinforced bristles for movement only
B) as chitin-hardened tentacles to move sand only
C) as chitin-hardened jaws to capture prey only
D) as chitin-hardened jaws to capture prey and chitin-hardened tentacles to move sand
E) as chitin-reinforced bristles for movement and chitin-hardened jaws to capture prey

Which of the following union security clauses requires an employee to become a union member before they are hired?

A) Open shop
B) Union shop
C) Closed shop
D) Agency shop

Traditional grievance procedures are criticized for encouraging or allowing employees to become overly involved in workplace decision-making.