____________________ is spread by droplets produced when an infected person sneezes or coughs. Fill in the blank(s) with the appropriate word(s)

Most plants have parts that can continue growing throughout its life. This is referred to as ____ growth

a. determinate b. meristematic c. indeterminate d. shoot e. immortal

Inhibitors of enzymes can be either reversible or irreversible. In addition, most reversible inhibitors are either competitive or noncompetitive

Based on what you know about enzyme inhibition, classify the following examples as irreversible, competitive, or noncompetitive enzyme inhibition. A) competitive B) noncompetitive C) irreversible 1) Diisopropyl fluorophosphate binds to acetylcholinesterase and permanently inactivates the enzyme. Paralysis results. 2) A drug binds to the active site of an enzyme but disassociates and leaves the enzyme active. 3) A toxin binds to the surface of an enzyme. The enzyme then binds the substrate, but no product is produced. The toxin may disassociate and the enzyme will become active again. 4) Vitamin K is a coenzyme involved in blood clotting. An anticoagulant drug binds at the site of vitamin K bonding, blocking vitamin K binding and preventing clotting. Clotting resumes after the patient stops taking the drug. 5) Aspirin binds to prostaglandin synthetase and permanently stops its ability to produce prostaglandin.

The protist characterized by a silica shell and thread-like pseudopods is a(n)

A) alveolate. B) euglenid. C) excavate. D) foraminiferan. E) radiolarian.

What is schizogony?

A. when cysts are formed during times of stress B. when meiosis produces a variety of gamete types C. when organisms reproduce by budding D. when fission is preceded by several nuclear divisions E. when aggregates of cells form