WorksheetsExam Review Session 1- Life 102
Total questions: 28
Worksheet time: 15mins
Carbon-12 is an example of which of the following?
Atomic mass
Ion
Isotope
Electronegativity
Which is ALWAYS true of carbon if it has 6 protons?
It’s atomic number is 6
It has 6 neutrons
It’s molecular weight is 12
All of the above
What bond is formed when an atom Transfers one or more electrons?
Covalent Bond
Ionic Bond
Polar Covalent Bond
Valence Shell Bond
What is the type of bond that forms when two atoms share electrons?
Valence Shell Bond
Ionic Bond
Covalent Bond
Hydrogen Bonds
Which of the following is FALSE about Hydrogen Bonds?
They are Weak Bonds
They form between water molecules
They are Strong Bonds
They cause water to have a high specific heat
Which of the following statements is true about water?
There are hydrogen bonds between water molecules and polar covalent bonds within water molecules
There are covalent bonds between water molecules and ionic bonds within water molecules
There are polar covalent bonds between water molecules and hydrogen bonds within water molecules
There are hydrogen bonds between water molecules and hydrogen bonds within water molecules
What is the relationship between water and hydrophobic substances?
Hydrophobic substances have a high affinity for water
Hydrophobic substances seek out (go to) water
Hydrophobic substances are polar
Hydrophobic substances have a low affinity for water
Which element is the backbone of organic molecules?
Calcium
Carbon
Oxygen
Nitrogen
What are the essential elements of life?
Hydrogen, oxygen, nitrogen, and carbon
Hydrogen, oxygen, chlorine, and carbon
earth, wind, and fire
magnesium, chlorine, iron, phosphorous
Carbon can form four bonds, which allows it to be the building block of life. This is because...
It has four electrons
It's atomic number is four
it has four protons
It has four valence electrons
Say the pH of tap water increases from 7 to 8 when you go from Fort Collins to Denver. How much more acidic or basic is the water in Denver?
1^10 x more acidic
1^10 x more basic
10x more acidic
10x more basic
When we say that stomach acid is very acidic, we mean..
It has a high pH and has lots of H+ ions
It has a low pH and has lots of H+ ions
It has a low pH and has lots of OH- ions
It is good at dissolving things
What involves the addition of a water molecule?
Dehydration synthesis
Hydrolysis
Hydration synthesis
Hydrogenation
In ______, a water molecule is lost, resulting in a ______.
Dehydration synthesis, monomer
Hydrolysis, polymer
Hydrolysis, monomer
Dehydration synthesis, polymer
What causes unsaturated fats to be liquid at room temperature?
The amount of hydrogens
pH
The double bond
Base pairing
Which is an example of a polysaccharide?
Starch
RNA
Phospholipid
Sucrose
What bonds link amino acids together?
Hydrogen bonds
Peptide bonds
Ionic bonds
Dehydration synthesis
If a protein is denatured, which of the following would you look for as the blueprint for the former shape?
Primary structure
Secondary structure
Tertiary structure
Quaternary structure
Structure affects function
true
false
Which of following bonds is not found in the secondary, tertiary, or quaternary structure of proteins?
hydrogen bonds
ionic bonds
(poly)peptide bonds
covalent bonds
What evidence supports the endosymbiont theory?
Double membrane of Mitochondria
DNA in the nucleus
Mitochondria do not have ribosomes
Prokaryotes are single celled organisms
The two organelles that support the endosymbiont theory include mitochondria and chloroplast
True
False
Which of the following do prokaryotes lack?
DNA
Ribosomes
Nucleus
Plasma Membrane
eukaryotes tend to be bacterial cells, which are unicellular
True
False
Eukaryotic cells have
Circular DNA
No Nucleus
Nucleoid
Membrane bound organelles
What best describes the components that make up a phospholipid?
Hydrophobic head and tail
Hydrophobic head and hydrophilic tail
Hydrophilic head and tail
Hydrophilic head and hydrophobic tail
What is the purpose of ribosomes?
Produce energy and ATP
Carry out the instructions to make proteins
Remove waste from the cytoplasm
Store nuclear DNA
Which of the following is not present in Prokaryotes?
Nucleoid
Ribosomes
Golgi body
Plasma membrane
