WorksheetsPCBI101 M1L2 Chemical Basis of Life (Intro)
Total questions: 46
Worksheet time: 33mins
What do you call, the "simplest form of matter"?
Element
Atom
Contains protons, electrons, and neutrons
Atom
Molecules
Element
All of the statements are correct about Covalent Bond, EXCEPT:
Between nonmental
has prefix; mono, di, tri, tetra and etc.
CO1, CO2
Pb, Sb
Bonds of different element between non-mental and has unequal sharing of electrons.
(a)
Bonds of same element with equal sharing of e-
(a)
All choices are TRUE about IONIC BONDING, Except:
between Metal and Nonmetal
e.g. NaCl, KCl
e.g. CO2, H2O
Select all that are true about Hydrogen Bond:
Polar molecules have a positive end and a negative end
Weaker bond than ionic or covalent
Forms when positive end of one polar molecule is weakly attracted to negative end of another polar molecule
2 or more atoms chemically combine
2 or more atoms chemically combine, such as O2
(a)
chemical combination of 2 or more different elements, such as NaCl
(a)
All of the choices are true about Chemical Reactions, EXCEPT:
Involves Reactants: what is put into reaction
Involves Products: end result of reaction
formation or breaking of chemical bonds
ability to do work
Synthesis reaction:
- build a new molecule
- energy-requiring
Ex. ADP + P --> ATP
Ex. ATP --> ADP + P
Decomposition reaction:
- break down molecule
- energy-releasing
Ex. ATP --> ADP + P
Ex. ADP + P --> ATP
(a)
(a)
Energy
ability to do work
energy in motion
stored energy
energy stored in chemical bonds
Kinetic energy: energy in ___
Motion
that is stored
At rest
Stored sugar in liver, skeletal muscle, and fat
Glycogen
Glucose
Glucagon
Energy stored in chemical bonds (food)
(a)
- sugar found in food
- glucose is used to make ATP (energy)
Glucose
Glycogen
Glucagon
All choices are TRUE about Acids, EXCEPT:
donate H+ (proton)
pH below 7
Ex. HCl (hydrochloric acid)
accept H+ (proton)
All choices are TRUE about Bases, EXCEPT:
accept H+ (proton)
pH above 7
Ex. NaOH (sodium hydroxide)
pH of 7
All solution or substance are Acidic, except:
HCl
Soda Ash
Tomatoes
Urine Saliva
All solution or substance are Basic, except:
Oven Cleaner
Great Salt Lake
NaOH
Black Coffee
substances that do not contain carbon or hydrogen
(a)
Characteristics of Carbohydrates, SELECT that all apply:
Contain C, H, O
H:O is a 2:1 ratio
Ex. C6H12O6
Contain C, H, O, P
Monosaccharides are ___
building blocks
basic unit of life
C6H12O5
Simple sugar
(a)
Disaccharide: 2 Sugars
Glucose + fructose = sucrose
Glucose + galactose=fructose
ALL are true about combination of Disaccharides, EXCEPT:
Glucose + fructose = sucrose
Glucose + galactose=lactose
Glucose + galactose=sucrose
Ex. Starch, grain, vegetables, glycogen, etc. Many sugars
(a)
All choices are fxn of Carbohydrates, EXCEPT:
Short-term energy storage
Converted to glucose quickly
Glucose is used to make ATP (energy)
Brain cells require glucose
long-term energy storage
Amino acids are the building blocks of?
Proteins
Lipids
Water
Characteristics of PROTEINS, EXCEPT:
Contains C, H, O, N
Amino acids are the building blocks.
Lipids are the building blocks.
All are true about AMINO ACIDS found in protein, EXCEPT:
Has 20 different amino acids
Amino acids contain an amine (NH2) group and carboxyl group
Amino acids aren’t stored so a daily supply is required
Amino acids are stored so it does not need daily supply
All are fxn of PROTEINS, EXCEPT:
Used to make skin, hair, nails, muscles
Act as catalyst
Act as enzymes
Immune system functions
Muscle contractions (actin and myosin)
Characteristic of Lipids, EXCEPT:
Contain C, H, O
No 2:1 ratio of H:O
Insoluble in water
soluble in water
Glycerol and fatty acids are the building blocks of?
Lipids
Protein
Enzyme
All are fxn of LIPIDS, EXCEPT:
Long term energy storage
Cholesterol is part of the cell membrane structure
Protective cushion for organs
Insulates against heat loss
Protective cushion for bones
type of LIPID: single covalent bonds between carbon atoms
Saturated
Unsaturated
Type of LIPID: one or more double covalent bonds between carbons
Unsaturated
Saturated
Examples of SATURATED:
Ex. Beef, pork, whole milk, cheese, eggs
Ex. Olive oil, fish oil, sunflower oil
Examples of Unsaturated:
Ex. Olive oil, fish oil, sunflower oil
Ex. Beef, pork, whole milk, cheese, eggs
Saturated
Unsaturated
Saturated
Unsaturated
All are TRUE about NUCLEIC ACIDS, EXCEPT:
Composed of C, H, O, N, P
Ex. DNA (deoxyribonucleic acid) and RNA (ribonucleic acid)
Nucleotides composed of nitrogen base, phosphate, and 5 carbon sugar
Amino Acids are the building blocks
Nucleotides are the building blocks of?
(a)
