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WorksheetsQuarter 2 Review
Total questions: 54
Worksheet time: 28mins
Why is carbon so special compared to other elements?
only carbon atoms can be dissolved in water solutions + suspension
carbon atoms have 4 valence electrons and can form quadruple bonds
carbon atoms can bond to one another and form a lot of different structures
Which of the following is NOT a monomer?
glucose
protein
amino acid
Which of the following is NOT a function of proteins?
control the rate of reactions
move substances into or out of cells
store and transmit genetic information
In chemical reactions, atoms are
rearranged
created
destroyed
Identify the reactant(s) in the chemical reactions, CO2 + H2O - - > H2CO3
CO2
CO2, H2O, H2CO3
CO2 and H2O
The energy needed to get a reaction started is the
activation energy
chemical energy
cohesion energy
In which graph, Exothermic or Endothermic, is energy absorbed?
Exothermic
Endothermic
Enzymes affect the reactions in living cells by changing the
speed of the reaction
products of the reaction
pH of the reaction
Which of the following is NOT a principle of the cell theory?
cells are the basic unit of life
very few cells are able to reproduce
all living things are made of cells
Looking at a cell under a microscope, you note that it is a prokaryote. How do you know?
the cell lacks a nucleus
the cell lacks genetic material
the cell lacks cytoplasm
Which of the following enclose their DNA in a nucleus?
viruses
bacteria
eukaryotes
Not all cells are alike. Which of the following is NOT a true statement about differences between cells?
cells come in different shapes
different kinds of cells are different sizes
most cells have a membrane, but some do not
Which of the following organisms are prokaryotes?
plants
animals
bacteria
Which of the following conclusions can you draw about the cell shown in the diagram?
the cell is eukaryotic because it has a nucleus
the cell is prokaryotic because it has a nucleus
the cell is eukaryotic because it doesn't have a nucleus
Which of the following is a function of the nucleus?
stores DNA
stores sugars
builds proteins
Which of the following statements about the nucleus is NOT true?
the nucleus is the site of protein synthesis
the nucleus is surrounded by a nuclear envelope that lets materials in + out
the nucleus stores the coded instructions for making the cell's proteins
Which organelle breaks down organelles that are no longer useful?
golgi apparatus
mitochondrion
lysosome
Which of the following is a function of the cytoskeleton?
surrounds the cell
helps a cell keep its shape
helps make proteins
Which structures are involved in cell movement?
microtubules + microfilaments
nucleolus + nucleus
chromosomes
Which structure makes proteins using coded instructions that come from the nucleus?
mitochondria
vacuoles
ribosomes
Which sequence correctly traces the path of a protein in a cell?
ER, lysosome, golgi
ribosome, golgi, ER
ribosome, ER, golgi
Which organelle converts the chemical energy stored in food into compounds that are more convenient for the cell to use?
mitochondria
chloroplast
golgi
Which organelles are involved in energy conversion?
golgi + chloroplasts
mitochondria + ribosomes
chloroplasts + mitochondria
Which organelle would you expect to find in plant cells but not animal cells?
chloroplast
smooth ER
ribosomes
Which organelle would you expect to find in plant cells but not animal cells?
chloroplast
smooth ER
ribosomes
The primary function of the cell wall is to
support + protect the cell
help the cell move
direct the activities of the cell
Unlike the cell membrane, the cell wall is
found in all organisms
composed of a lipid bilayer
a rigid structure
Which of the following is a function of the cell membrane?
stores water, salt, proteins, + carbohydrates
regulates the movement of materials into + out of the cell
breaks down lipids, proteins, + carbohydrates from food
The cell membrane contains channels + pumps that help move materials from one side to the other. What are these channels + pumps made of?
bilipids
carbohydrates
proteins
Diffusion occurs because
molecules constantly move + collide with each other
cellular energy pumps molecules across the cell membrane
molecules are attracted to one another
During diffusion, when the concentration of molecules is the same on both sides of the membrane, the molecules will
continue to move across the membrane in both directions
move across the membrane to the outside of the cell
move across the membrane to the inside of the cell
The diffusion of water across a selectively permeable membrane is called
pinocytosis
osmosis
diffusion
An animal cell that is surrounded by fresh water will burst because the osmotic pressure causes
solutes to move out of the cell
water to move out of the cell
water to move into the cell
Which means of particle transport requires input of energy from the cell?
diffusion
passive transport
active transport
Which means of particle transport is shown in the picture?
endocytosis
facilitated diffusion
exocytosis
Energy is release from ATP when
a phosphate group is added
adenine binds to ribose
a phosphate group is removed
Organisms that cannot make their own food and must obtain energy from external sources are called
plants
heterotrophs
autotrophs
Which number represents a single thylakoid?
3
4
5
Photosynthesis uses sunlight to convert water and carbon dioxide into
high-energy sugars and water
oxygen and carbon dioxide
oxygen and high-energy sugars
Which of the following is NOT found in the overall reaction of photosynthesis?
nitrogen
carbon dioxide
water
The Calvin cycle is another name for the
light-independent reactions
photosynthesis reaction
light-dependent reactions
The work of scientists usually begins with
testing a hypothesis
drawing conclusions
careful observations
A well-tested explanation that explains a lot of observations is
a theory
a controlled experiment
an inference
The process by which organisms keep everything inside their bodies within certain limits is called
photosynthesis
evolution
homeostasis
What are the smallest objects that biologists study?
body organs
organisms
molecules
Isotopes are atoms of the same element with the same number of protons but a different number of
protons
electrons
neutrons
A covalent bond is formed as the result of
sharing electrons
transferring electrons
transferring protons
A covalent bond is formed as the result of
sharing electrons
transferring electrons
transferring protons
When salt is dissolved in water, water is the
solute
solvent
reactant
Water molecules are polar, with the
oxygen and hydrogen sides being slightly positive
oxygen side being slightly negative and hydrogen side being slightly positive
oxygen side being slightly positive and hydrogen side being slightly negative
What is the function of this molecule?
Store genetic information
Direct cell activities
Make proteins
Power reactions in cells
Plants need the following
air, water, space, sunlight
air, water, oxygen, space
water,air,plants,space
water
What is the function of flowers?
(a)
