WorksheetsIB Biology Topic 1 Review
Total questions: 15
Worksheet time: 15mins
What is the molecular formula of sucrose?
C12H24O12
C12H23O10
C12H22O11
C12H20O10
What type of reaction is used to breakdown a polypeptide (protein) into amino acids?
(a)
Which of the following could be a glycosidic bond?
C-O
C-N
C-H
C=C
Which of the following properties allow starch to be a good energy storage carbohydrate? One, some or all answers may be correct.
it is soluble so there is no osmotic effect
it is coiled so a lot can be fit into a small space
it is a large molecule so cannot easily leave the cell
it is branched so it is easier to remove glucose molecules
Which molecule is shown in the diagram?
cellulose
amylose
amylopectin
polypeptide
Cis-unsaturated fatty acids are healthier than trans-unsaturated fatty acids. Which of the following properties of cis-unsaturated fatty acids contribute to this? I. they have less bends in their chain II. there are weaker attractive forces between their chains III. they are more likely to form liquids (oils) than solids
I and II only
I and III only
II and III only
I, II and III
Which of the following are differences between a triglyceride and a phospholipid?
I and II only
I and III only
II and III only
I, II and III
What type of bond connects glycerol to fatty acids?
glycosidic
lipid
ester
peptide
Which of the following best describes primary succession?
Volcano wipes out ecosystem that gradually grows back from ash covered soil
Volcano creates a new island of rock that must break down to form an ecosystem
Forest fire burns down forest that must bounce back over time
Tornado destroys a crop that must slowly grow back over time.
How does energy enter an ecosystem?
sunlight
soil
animals
The total mass of living tissue at each trophic level can be shown in a(n)
energy pyramid
pyramid of numbers
biomass pyramid
biogeochemical cycle
Why are food chains, such as the one shown, limited to 4-5 organisms?
There are not more organisms in the ecosystem
Organisms must share resources
Energy transfers are inefficient
They are only limited when organisms are living on land.
What is the primary function of ribosomes in a cell?
Protein synthesis
Lipid synthesis
DNA replication
Carbohydrate storage
Which of the following is a characteristic of prokaryotic cells?
Presence of a nucleus
Lack of membrane-bound organelles
Presence of mitochondria
Larger than eukaryotic cells
In an experiment, a student measures the rate of photosynthesis by counting the number of oxygen bubbles produced by an aquatic plant. Which variable is the student most likely manipulating?
Amount of light
Amount of water
Amount of oxygen
Amount of carbon dioxide
