Biology and University Chemistry Assessment
Take the 30-minute placement quiz, choose your test, and answer all 20 questions before time runs out.
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Grade 11 Biology
Grade 12 Biology
University Chemistry
Grade 11 Biology Quiz
[Diversity of living things] Which of these classification levels is the most specific?
Kingdom
Species
Family
Genus
[Genetic processes] In pea plants, purple flowers (P) are dominant over white flowers (p). What is the genotype of a white-flowered plant?
PP
pp
Pp
Either PP or Pp
[Animals: structure and function] Which type of blood vessel carries blood away from the heart?
Veins
Capillaries
Arteries
Lymph vessels
[Plants: anatomy, growth and function] In which layer of a leaf does most photosynthesis take place?
Upper epidermis
Palisade mesophyll
Xylem
Cuticle
[Evolution] A human arm, a bat wing, and a whale flipper have the same basic bone layout but different uses. What are these called?
Analogous structures
Vestigial structures
Mutated structures
Homologous structures
[Diversity of living things] Which of these organisms is a prokaryote?
Yeast
Amoeba
E. coli bacteria
Mushroom
[Genetic processes] Two plants that are both heterozygous (Aa) for a trait are crossed. What fraction of the offspring is expected to show the recessive trait?
1/2
3/4
0
1/4
[Evolution] After factories darkened tree bark with soot, dark peppered moths became much more common than light ones. This is an example of:
Directional selection
Stabilizing selection
Disruptive selection
Artificial selection
[Animals: structure and function] Where are most nutrients from food absorbed into the blood?
Stomach
Large intestine
Esophagus
Small intestine
[Plants: anatomy, growth and function] What is the main job of xylem tissue in a plant?
Carry water and minerals up from the roots
Carry sugars from the leaves to the rest of the plant
Produce new cells for growth
Protect the stem from insects
[Diversity of living things] Why are viruses usually not considered living things?
They cannot reproduce without a host cell
They do not contain any genetic material
They are too small to see with a microscope
They are made of cells without a nucleus
[Genetic processes] During which stage of meiosis does crossing over happen?
Metaphase II
Anaphase I
Prophase I
Telophase II
[Evolution] A population of squirrels is split by a canyon. Over many generations the two groups can no longer interbreed. This is:
Sympatric speciation
Genetic drift only
Allopatric speciation
Convergent evolution
[Animals: structure and function] How does oxygen move from the alveoli in the lungs into the blood?
By diffusion from high to low concentration
By active transport using ATP
By being pumped in by the heart
By osmosis through the capillary walls
[Plants: anatomy, growth and function] Why do many plants close their stomata on hot, dry days?
To take in more carbon dioxide
To speed up photosynthesis
To release extra oxygen
To reduce water loss by transpiration
[Genetic processes] Colour blindness is an X-linked recessive trait. A woman who is a carrier has children with a man who has normal colour vision. What is the probability that one of their sons is colour-blind?
1/2
1/4
0
1
[Diversity of living things] Which feature do fungi share with animals but NOT with plants?
Their cells have cell walls
They get food by absorbing or eating other organisms (heterotrophs)
Many species are multicellular
Their cells have a nucleus
[Animals: structure and function] Which blood vessel carries oxygen-poor blood?
Pulmonary vein
Pulmonary artery
Aorta
Renal artery
[Evolution] Which of these is NOT part of Darwin's theory of natural selection?
Individuals in a population vary in their traits
More offspring are produced than can survive
Individuals with helpful traits survive and reproduce more
Individuals change their traits during their lifetime because they need to
[Plants: anatomy, growth and function] A plant on a windowsill bends toward the light. What causes this?
Auxin builds up on the lit side, so those cells grow longer
Cells on the lit side divide faster than cells on the shaded side
Auxin builds up on the shaded side, so those cells grow longer
Gibberellin causes the cells on the lit side to shrink
Grade 12 Biology Quiz
[Biochemistry] What are the building blocks (monomers) of proteins?
Nucleotides
Monosaccharides
Amino acids
Fatty acids
[Molecular genetics] In DNA, adenine (A) always pairs with which base?
Guanine (G)
Thymine (T)
Cytosine (C)
Uracil (U)
[Homeostasis] Which hormone lowers blood glucose levels?
Glucagon
Adrenaline
Insulin
Cortisol
[Population dynamics] What does the carrying capacity of an environment mean?
The total number of species living there
The fastest rate a population can grow
The largest population the environment can support over time
The number of births in one year
[Metabolic processes] Where in the cell does glycolysis take place?
Mitochondrial matrix
Cytoplasm
Inner mitochondrial membrane
Nucleus
[Biochemistry] How do enzymes speed up chemical reactions?
They raise the temperature of the cell
They add energy to the reactants
They lower the activation energy
They are used up as reactants
[Molecular genetics] A DNA template strand reads 3' TACGGATTC 5'. What mRNA is made from it?
5' AUGCCUAAG 3'
5' ATGCCTAAG 3'
5' UACGGAUUC 3'
5' AUGCCUAAC 3'
[Metabolic processes] What is the final electron acceptor in the electron transport chain?
NAD+
Oxygen
Carbon dioxide
Glucose
[Homeostasis] When a person is dehydrated, what happens to ADH and urine?
ADH decreases and the kidneys make a large amount of dilute urine
ADH increases and the kidneys make a large amount of dilute urine
ADH decreases and the kidneys stop making urine
ADH increases and the kidneys make a small amount of concentrated urine
[Population dynamics] A deer population starts the year at 500. During the year there are 60 births, 20 deaths, 10 deer move in, and 30 deer move out. What is the population at the end of the year?
540
520
550
620
[Biochemistry] Why do phospholipids form a double layer (bilayer) in water?
They are fully soluble in water
They are made of amino acids
They have water-fearing heads and water-loving tails
They have water-loving heads and water-fearing tails
[Molecular genetics] A point mutation changes a codon for an amino acid into a stop codon. What type of mutation is this?
Silent mutation
Missense mutation
Frameshift mutation
Nonsense mutation
[Metabolic processes] What is the net number of ATP made directly by glycolysis for each glucose molecule?
4
2
36
0
[Homeostasis] Which of these is an example of negative feedback?
Sweating when body temperature rises
Oxytocin increasing contractions during childbirth
Platelets attracting more platelets during blood clotting
Ripe fruit releasing ethylene that ripens nearby fruit
[Population dynamics] A population grows quickly at first, then slows and levels off. What type of growth curve is this?
Exponential (J-shaped)
Linear
Logistic (S-shaped)
Boom and bust
[Biochemistry] Which statement about a competitive inhibitor is true?
It binds to the active site, and its effect can be reduced by adding more substrate
It binds to an allosteric site and changes the shape of the active site
It permanently destroys the enzyme
It increases the rate of the reaction
[Molecular genetics] Why is the lagging strand made in short pieces (Okazaki fragments) during DNA replication?
Helicase can only unwind short sections at a time
The lagging strand has no primers
DNA ligase only works on short pieces
DNA polymerase can only add nucleotides in the 5' to 3' direction
[Metabolic processes] Cyanide blocks the last protein complex of the electron transport chain. What is the most direct result?
Electrons cannot pass to oxygen, so the proton gradient and most ATP production stop
Glycolysis stops right away because it needs oxygen
The cell makes more ATP to make up for it
The Krebs cycle speeds up to make more NADH
[Homeostasis] What happens when blood levels of thyroxine become too high?
The hypothalamus releases less TRH and the pituitary releases less TSH
The pituitary releases more TSH
The thyroid makes even more thyroxine
The hypothalamus releases more TRH
[Population dynamics] Researchers catch and tag 40 fish in a lake and release them. Later they catch 50 fish, and 8 of them are tagged. What is the estimated population?
10
400
2000
250
University Chemistry Quiz
[Atomic structure and periodicity] How many neutrons are in an atom of iron-56? (Iron has atomic number 26.)
26
56
82
30
[Bonding and molecular geometry] What is the molecular shape of methane, CH₄?
Square planar
Tetrahedral
Trigonal planar
Trigonal pyramidal
[Stoichiometry and solutions] How many moles are in 36.0 g of water? (Molar mass of H₂O = 18.02 g/mol)
0.500 mol
649 mol
2.00 mol
1.00 mol
[Thermochemistry] Which statement describes an exothermic reaction?
It absorbs heat and ΔH is negative
It releases heat and ΔH is positive
It absorbs heat and ΔH is positive
It releases heat and ΔH is negative
[Kinetics and equilibrium] How does a catalyst speed up a reaction?
It increases the temperature of the reaction
It shifts the equilibrium toward the products
It provides a pathway with a lower activation energy
It increases the energy of the products
[Atomic structure and periodicity] Which of these atoms has the largest atomic radius: Na, Mg, Cl, or Ar?
Mg
Na
Cl
Ar
[Stoichiometry and solutions] 5.85 g of NaCl (molar mass 58.44 g/mol) is dissolved to make 250.0 mL of solution. What is the concentration?
0.100 M
0.400 M
0.0234 M
23.4 M
[Bonding and molecular geometry] Which of these molecules is polar?
CO₂
CH₄
NH₃
BF₃
[Thermochemistry] How much heat is needed to warm 100.0 g of water from 20.0°C to 45.0°C? (c = 4.184 J/g·°C)
10.5 kJ
18.8 kJ
8.37 kJ
1.05 kJ
[Kinetics and equilibrium] What is the equilibrium constant expression for N₂(g) + 3H₂(g) ⇌ 2NH₃(g)?
Kc = [N₂][H₂]³ / [NH₃]²
Kc = [NH₃]² / ([N₂][H₂]³)
Kc = 2[NH₃] / ([N₂] · 3[H₂])
Kc = [NH₃] / ([N₂][H₂])
[Atomic structure and periodicity] What is the electron configuration of the Fe²⁺ ion? (Fe has atomic number 26.)
[Ar] 3d⁶
[Ar] 4s² 3d⁴
[Ar] 4s² 3d⁶
[Ar] 4s¹ 3d⁵
[Stoichiometry and solutions] For 2H₂ + O₂ → 2H₂O, you start with 4.0 g of H₂ (2.016 g/mol) and 16.0 g of O₂ (32.00 g/mol). What is the maximum mass of water formed? (H₂O = 18.02 g/mol)
36.0 g
18.0 g
20.0 g
9.0 g
[Thermochemistry] Use these enthalpies of formation to find ΔH for CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(l). ΔHf: CH₄(g) = −74.8, CO₂(g) = −393.5, H₂O(l) = −285.8 kJ/mol.
−604.5 kJ
−1039.9 kJ
−890.3 kJ
+890.3 kJ
[Kinetics and equilibrium] When the concentration of reactant A is doubled, the reaction rate becomes four times faster. What is the order of the reaction with respect to A?
First order
Zero order
Fourth order
Second order
[Bonding and molecular geometry] What is the hybridization of the carbon atom in CO₂?
sp²
sp³
sp
sp³d
[Atomic structure and periodicity] What is the energy of one photon of light with a wavelength of 500 nm? (h = 6.626 × 10⁻³⁴ J·s, c = 2.998 × 10⁸ m/s)
3.97 × 10⁻¹⁹ J
3.97 × 10⁻²⁸ J
1.33 × 10⁻²⁷ J
6.00 × 10¹⁴ J
[Stoichiometry and solutions] 25.00 mL of H₂SO₄ is neutralized by 32.40 mL of 0.1000 M NaOH. What is the concentration of the H₂SO₄? (H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O)
0.0648 M
0.130 M
0.0772 M
0.0386 M
[Thermochemistry] A reaction has ΔH = +40.0 kJ/mol and ΔS = +120 J/mol·K. Above what temperature is it spontaneous?
0.333 K
3.00 K
4.80 × 10⁶ K
333 K
[Kinetics and equilibrium] For H₂(g) + I₂(g) ⇌ 2HI(g), Kc = 49 at a certain temperature. If 1.00 M H₂ and 1.00 M I₂ are mixed with no HI, what is [HI] at equilibrium?
0.778 M
0.222 M
1.75 M
1.56 M
[Bonding and molecular geometry] What is the molecular shape of XeF₄?
Square planar
Tetrahedral
Seesaw
Octahedral
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