BIO 2401 CH 2 Study Guide

a particle that has lost electrons
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Terms in this set (20)
a particle that has lost electrons
cation
Negatively charged subatomic particles that form part of an atom
electron
Anything that takes up space and has mass (weight
matter
The ability to do work
energy
the smallest part of an element
atom
a substance composed of two or more components that are physically combined.
mixture
A solution is a mixture that is considered _______________, meaning the same throughout
homogenous
Blood is an example of a ______________, a type of mixture with large particles that settle out.
suspension
A ________ is the solid part of a mixture that is usually dissolved in a liquid known as a _____________.
solute; solvent
A ______________ is a substance made up of two or more elements that are chemically combined
compound
The ___________ shell is the outermost shell of an atom that contains electronsvalenceA _______________ bond involves the equal sharing of electron pairscovalent or nonpolar covalentA ______________ is a substance that resists changes in pH and helps maintain homeostasisBuffersA substance with a pH of 10 would be considered __________________BasicOrganic compounds always contain: A) oxygenB) carbonC) ethanolD) watercarbonWhich of the following is NOT a monosaccharide? A) glucose B) galactose C) fructose D) sucrosesucroseWhich of the following is NOT true about RNA? A) double stranded B) contains cytosine C) found primarily in the cytoplasm D) directs protein synthesisfound primarily in the cytoplasmWhat lipid is a primary component of the cell membrane? A) prostaglandins B) triglycerides C) phospholipids D) starchphospholiipidsWhat level of protein structure makes up the backbone of a protein and is simply the string of amino acids? A) primary B) secondary C) tertiary D) quarternaryProteins that serve as biological catalysts are known as: A) nucleotides B) monomers C) enzymes D) collagenenzymes