Amylose is Select one: a. a long, straight glucose chain. b. branched glucose chains. c. a long, straight fatty acid chain. d. branched amino acid chains.

A long, straight glucose chain (a major constituent of starch)

Explanation: Starch is mostly amylose (straight chain glucose polymer) but has varying amounts of branched glucose chains (amylopectin).

Fatty acids are hydrocarbons with a carboxylic acid group (-COOH) attached, so they are hydrophobic (don't mix with water) at one end and hydrophilic (water soluble at the COOH end)

Simple carboxylic acids don't have a long enough hydrocarbon chain to have this characteristic, e.g. CH3COOH acetic acid

Typical fatty acids found in nature include stearic acid with an 18-carbon chain

CH3-(CH2)16-COOH

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.