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WorksheetsBiochem Revision
Total questions: 45
Worksheet time: 22mins
Name
Class
Date
1.
How many elecrons can the 2nd electron shell hold?
a)
2
b)
8
c)
18
d)
20
2.
Which chemical bond type is strongest?
a)
Ionic Bond
b)
Polar Covalent Bond
c)
Covalent Bond
d)
Van Der Waal forces
3.
As you go right across the periodic table, the elctronegativity of an element___
a)
Increases
b)
Decreases
c)
Stays The Same
4.
What do combustion reactions produce?
a)
Carbon and Oxygen
b)
Water and Carbon Dioxide
c)
Carbon Dioxide and Oxygen
d)
Hydrogen
e)
Water and Oxygen
5.
As you go right across the periodic table, the number of valence electrons…
a)
Doesn't matter
b)
Decreases
c)
Increases
6.
what is CO_2 bond type
a)
Polar Covalent
b)
Ionic
c)
Covalent
d)
Electronegativity
7.
For particles in a compund to react, they must (a)
8.
what are the 4 main principle of evolution?
a)
Variation, characterisation, biodiversity, Heritability
b)
Heritability, Reproduction advantage, Variation, Evolution
c)
Evolution, cats, dogs, people
d)
Variation, heritability, overproduction, reproductive advantage
9.
What would Mr warren do with 1 million dollars?
a)
Buy science stuff
b)
Build a science lab
c)
Build a robot
d)
Escape to mars with star trek for a better life
10.
What is a phenotype?
a)
Earth
b)
Genotype
c)
Visible trait
d)
type of animal
11.
What is a population bottleneck?
a)
Sharp reduction in population due to an event
b)
Increase in population due to an event
c)
when the population remains the same for 100 years
12.
Do covalent bonds share an electron?
a)
Yes
b)
No
13.
Which gender do sex-dominant traits mostly affect?
a)
Men
b)
Women
14.
How do you determine the Phenotype?
4 lines
15.
What is mitosis?
a)
The process of your cells repairing themselves.
b)
A type of cell division that results in the formation of two genetically identical daughter cells. (Both cells have the same number of chromosomes as the original cell)
c)
The process where a single cell divides twice to produce four cells containing half of the original amount of genetic information.
d)
The process where your cells begin to kill your other cells due to them not working.
16.
What is meiosis?
a)
The process where your cells begin to kill your other cells due to them not working.
b)
The process where a single cell divides twice to produce four cells containing half of the original amount of genetic information.
c)
A type of cell division that results in the formation of two genetically identical daughter cells. (Both cells have the same number of chromosomes as the original cell)
d)
The process of your cells repairing themselves.
17.
what is a womens alleles?
a)
XX
b)
XY
18.
what is a genotype?
4 lines
19.
what is an atomic number?
a)
the number of neutrons in a nucleus
b)
the number of protons in a nucleus
20.
How many chromosome pairs does a human have?
a)
10
b)
23
c)
42
d)
26
21.
What is a phenotype?
a)
Combination of alleles
b)
Observable version of a trait
c)
An organism that has one phenotype
d)
Organism that has multiple phenotypes
22.
What is the formula of a double displacement reaction?
a)
A+BC---> AC+B
b)
A+BC---> BA+C
c)
AB+CD--> AD+CB
23.
What is the electron configuration of Argon?
a)
2,8,8,18
b)
2,8,8,6
c)
2,8,7
d)
2,8,8
24.
How much electrons in the outer shell are needed for the atom to be stable?
a)
2
b)
6
c)
9
d)
8
e)
12
25.
What is the karyotype of a potato?
a)
46,XX
b)
78
c)
46,XY
d)
48
e)
12
26.
An ion is formed when an ______ gains or loses an electron.
a)
Atom
b)
Element
c)
Electron contriguration
d)
Molecule
27.
Which of these main factors do not affect the rate of reaction?
a)
Temperature
b)
Concentration
c)
Pressure
d)
Surface Area
28.
What is the central part of the atom, containing protons and neutrons?
a)
Molecule
b)
Neucleus
c)
Atom
d)
Electrons
29.
What is the negative subatomic particle found outside the centre of an atom?
a)
Proton
b)
Neutron
c)
Electron
d)
Neucleus
e)
Molecule
30.
A pure substance, made from only 1 type of atom is known as a:
a)
atom
b)
element
c)
Configuration
d)
interval
e)
Molecule
31.
Covalent bonding is when electrons are being:
a)
taken
b)
shared
c)
thrown away
d)
configurated
e)
dead
32.
Karyotype is:
a)
when 2 gametes (egg and sperm) combine
b)
the diluted porportions of a genetic trait
c)
the number of chromosomes in an organism
d)
the 4 principles of evolution
33.
Which word means different alleles?
a)
Homozygous
b)
Heterozygous
34.
How many electrons does the first shell hold?
a)
8
b)
4
c)
2
d)
6
35.
As the periodic table go from left to right, does the amount of protons increase?
a)
Yes
b)
No
36.
Which charge does an electron have?
a)
Positive
b)
Negative
c)
Neutral
37.
Which of these sequences is the four molecules found in DNA?
a)
A, T, G, C
b)
A, T, D, G
c)
P, A, T, D
d)
L, M, A, O
38.
Alleles can be either…
a)
Dominant or Submissive
b)
Incomplete Dominance and Recessive
c)
Dominant or Recessive
d)
Alpha and Omega
39.
Which of these is a negative ion?
a)
Cation
b)
Negation
c)
Anion
d)
Onion
40.
Does an atom get positively charged or negatively charged when losing an electron?
a)
Negatively Charged
b)
Positively Charged
41.
Energy level 4 can hold up to 18 electrons.
a)
true
b)
false
42.
How many types of reactions are there?
a)
7
b)
4
c)
5
d)
3
e)
6
43.
What is a covalent bonding?
a)
When electrons are shared instead of taken
b)
When an atom gains or loses an electron
44.
What is a reactant?
a)
A substance that is formed as the result of a chemical reaction
b)
A chemical process
c)
A substance that takes part in an undergoes change during a reaction
45.
Which of the three definitions of biodiversity is correct?
a)
Structural definitions - we compared how they looked.
b)
The ability to breed and create viable offsprings.
c)
Similar gene sequences present.
d)
All of them.
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