QUESTION 1 An element with an atomic number of 18 would have how many protons? 8
ID: 98210 • Letter: Q
Question
QUESTION 1
An element with an atomic number of 18 would have how many protons?
8
9
18
36
QUESTION 2
The main building material for steroids is:
cholesterol
carbohydrates
proteins
nucleic acids
QUESTION 3
In a coupled reaction, endergonic reactions always release more energy than:
enzymatic reactions
other endergonic reactions
exergonic reactions
none of these
QUESTION 4
Lipid bilayer is referring to:
nucleus
nucleolus
cell membrane
ribosome
QUESTION 5
An example of an autotrophic organism would be:
mushroom
grass
bird
any animal
QUESTION 6
What process occurs within the chloroplast?
Krebs cycle
glycolysis
photosynthesis
oxidative phosphorylation
QUESTION 7
Subatomic particles responsible for chemical bonds are:
protons
neutrons
isotopes
electrons
QUESTION 8
Bonds formed as a result of sharing electrons are known as:
ionic
covalent
hydrogen
exergonic
QUESTION 9
A protein with a single 3-dimensional structure is:
primary
secondary
tertiary
quaternary
QUESTION 10
Which of these is found in plant cells but not in animal cells?
mitochondria
cell membrane
cristae
plastids
QUESTION 11
Production of polysaccharides from simple sugars is known as:
glycogenesis
lipogenesis
gluconeogenesis
glycolysis
QUESTION 12
Where is chlorophyll located?
thylakoid
stroma
cell membrane
nucleus
QUESTION 13
What happens to a cell when it's placed in a hypotonic solution?
dehydrates
swells
remains the same
reaches equilibrium
QUESTION 14
As water freezes is becomes:
more dense
less dense
more cohesive
less cohesive
QUESTION 15
A solution that release hydrogen is known as a(an):
acid
base
salt
amino acid
2 points
QUESTION 16
An acid and a base combine to form:
a strong acid
a strong base
a weak acid
a salt
QUESTION 17
To prevent wilting, plants accumulate water in a:
chloroplast
thylakoid
vacuole
stroma
QUESTION 18
The most common form of stored fat in animals is:
cholesterol
triglycerides
glycogen
glycerol
QUESTION 19
Thin, invisible strands of DNA are known as:
chromosomes
chromatin
ribosomes
cristae
QUESTION 20
Hemoglobin is an example of what type of protein?
primary
secondary
tertiary
quaternary
QUESTION 21
A solution with which pH would have the greatest number of hydrogens?
3.0
5.5
7.0
12.0
QUESTION 22
Which of these requires the expenditure of energy?
simple diffusion
facilitated diffusion
active transport
osmosis
QUESTION 23
A type of biochemical reaction requiring energy is:
exergonic
endergonic
spontaneous
enzymatic
QUESTION 24
Isotopes differ in the number of:
protons
neutrons
electrons
all of these
QUESTION 25
The site of lipid production is:
golgi
mitochondria
rough ER
smooth ER
Explanation / Answer
1. 18.
Atomic number refers to the number of protons in an element, therefore if an element has atomic number 18, it will have 18 protons.
2. Cholesterol.
Steroids are formed from cholesterol which forms their building material.
3.
4. Cell membrane.
Cell membrane is formed of lipid bilayer having protiens present on both sides in a mosaic pattern.
5. Grass.
Grass is an example of green plants which are autographs. Mushrooms, birds along with other animals are heterotrophs.
6. Photosynthesis.
Chloroplasts are green coloured plastics which contains green pigment called chlorophyll. This pigment helps in carrying out the process of photosynthesis.
7. Electrons.
Electrons are involved in the formation of chemical bonds like Covalent and ionic bonds.
8. Covalent bond.
Covalent bond is formed by mutual sharing of electrons between two atoms.
9. Tertiary.
Tertiary structure is the complete three-dimensional structure of the polypeptide.
10. Plastics.
Plastics occur in plant cell but not in animal cell.
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