Biochem quiz Maggio Stuyvesant (study guide)

Description

Quiz to help prep for biochem quiz for Ms. Maggio's biochem test.
Chrissie Mar
Quiz by Chrissie Mar, updated more than 1 year ago
Chrissie Mar
Created by Chrissie Mar about 8 years ago
60
4

Resource summary

Question 1

Question
What is atomic mass?
Answer
  • The number of protons in the nucleus
  • the number of protons and neutrons in the nucleus
  • the number of protons, neutrons, and electrons

Question 2

Question
What does the atomic number mean?
Answer
  • The number of electrons the atom has
  • The number of protons the atom has
  • the number of neutrons the atom has

Question 3

Question
Which shows correct Lewis dot structure?

Question 4

Question
What is the order of chemical bonding from strongest to weakest?
Answer
  • ionic, van der waals, hydrogen, covalent
  • van der waals, hydrogen, ionic, covalent
  • hydrogen, ionic, van der waals, covalent
  • covalent, ionic, hydrogen, van der waals

Question 5

Question
Water is a [blank_start]polar[blank_end] molecule. When water molecules stick together, it is called [blank_start]cohesion[blank_end]. When water molecules stick to other objects it is called [blank_start]adhesion[blank_end]. Capillary action is when water is soaked up in a plant through [blank_start]adhesion[blank_end] and [blank_start]cohesion[blank_end] working together. (hint for last part: alphabetical order)
Answer
  • polar
  • cohesion
  • adhesion
  • adhesion
  • cohesion

Question 6

Question
Hydrophilic means __________________ Hydrophobic means _______________
Answer
  • water "loving" (dissolved in water), "hating" water (repels, wants to get away from water)
  • "hating" water (repels, wants to get away from water), water "loving" (dissolved in water)

Question 7

Question
When water molecules at the top of water cohere together to avoid outside molecules, it is called [blank_start]surface tension[blank_end].
Answer
  • surface tension

Question 8

Question
What are the four essential organic compounds for life?
Answer
  • Carbohydrates
  • Proteins
  • Nucleic Acids
  • Water
  • Lipids
  • Alcohol

Question 9

Question
Carbohydrates create [blank_start]sugars[blank_end] for energy. Lipids store [blank_start]energy[blank_end] with fats. Proteins are important for the [blank_start]structure[blank_end] of cells. Nucleic acids contain the [blank_start]genetic[blank_end] code for cells.
Answer
  • sugars
  • energy
  • structure
  • genetic

Question 10

Question
What is the difference between phospholipids and triglycerides?
Answer
  • Phospolipids have a phosphorus "head" and 2 tails of fatty acids
  • Triglycerides have 3 tails of fatty acids
  • Triglycerides store fat
  • Phospholipids create the cell membrane
  • All of the above

Question 11

Question
Deoxyribonucleic acid and ribonucleic acid are two types of nucleic acids
Answer
  • True
  • False

Question 12

Question
Enzymes are biological [blank_start]catalysts[blank_end], which help to speed up metabolic reactions. Enzymes [blank_start]denature[blank_end] (lose characteristics) when the conditions are not right.
Answer
  • denature
  • catalysts

Question 13

Question
Enzymes will denature based off changes in
Answer
  • Temperature
  • Time
  • Brightness
  • Salinity
  • pH

Question 14

Question
Enzymes have [blank_start]active[blank_end] sites. In these sites, [blank_start]substrates[blank_end] fit in and cause chemical reactions to occur. The speed of reaction can depend on the presence of [blank_start]inhibitors[blank_end].
Answer
  • active
  • substrates
  • inhibitors

Question 15

Question
Levels of protein structure: Primary - [blank_start]amino[blank_end] acid sequence Secondary - [blank_start]hydrogen[blank_end] bonds in peptide chain form alpha-[blank_start]helix[blank_end] and beta sheets. Tertiary - non-[blank_start]covalent[blank_end] interactions between [blank_start]variable[blank_end] group within protein Quaternary - interaction between [blank_start]two[blank_end] polypeptide chains
Answer
  • helix
  • amino
  • hydrogen
  • covalent
  • variable
  • two

Question 16

Question
What two saccharides create lactose?
Answer
  • glucose+glucose
  • amino acid+galactose
  • water+sucrose
  • glucose+galactose
  • maltose+sucrose

Question 17

Question
[blank_start]Waxes[blank_end] are lipids that [blank_start]waterproof[blank_end] plants.
Answer
  • Waxes
  • waterproof

Question 18

Question
Acids have less H+ ions and bases have more H+ ions
Answer
  • True
  • False

Question 19

Question
Whats the difference between dehydration synthesis and hydrolysis?
Answer
  • dehydration synthesis creates new polymers
  • hydrolysis involves taking away a water molecule
  • dehydration synthesis involves taking away a water molecule
  • hydrolysis breaks down polymers

Question 20

Question
the pH scale is measured from 0-20
Answer
  • True
  • False
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