TEAS Science Practice Quiz 1,2,3
Genome - Book Chromosome - Chapter Gene - Sentence Codon - Word Nucleotide - Letter
Match the following genetic terms with their book metaphors:
kilo-1,000 deca-10 centi-0.01 milli-1/1000
Match the prefixes with their multiplication factor. 10 0.01 1/1000 1,000 kilo deca centi milli
there are five common types of chemical reactions: Synthesis/Combination - two or more reactants form one product (A + B → C). Decomposition - single compound breaks down into two or more simpler substances (AB → A + B). Single Replacement - more active element replaces less active element (A + BC → B + AC). Double Replacement - two species (typically ions) are replaced (AB + CD → AD + CB). Combustion (burning) - a compound (typically carbon) combines with oxygen in the air.
Matching: Match the following chemical reactions with their corresponding formulas. A + B → C A + BC → B + AC AB + CD → AD + CB AB → A + B
Type of liquid (The correct answer is: type of liquid. The height of plant is a dependent variable - it is the factor expected to change as the independent variable (type of liquid) is changed. The amount of liquid and sunlight are control variables.)
A researcher believes that different types of liquids affect the growth rates of plants. The researcher designs an experiment to test the hypothesis. Each plant is given a different liquid: distilled water, orange juice, and pineapple juice. Each plant has the same amounts of sunlight, liquid, and soil. The plants given distilled water grew the fastest.
1.8 (The correct answer is: 1.8. Density is mass/volume. In this case, the density of the substance is 9/5 = 1.8. You can also use the units (g/cm3) as a guide to help you (i.e., divide mass in grams by volume in cm3). Note: you do not need the atomic radius to solve this question - it is there to confuse you.)
A substance has a atomic radius of 99 pm, a volume of 5.0 cm3, and a mass of 9.0 grams. What is its density (in g/cm3)?
versions of a gene that control each characteristic (The correct answer is: versions of a gene that control each characteristic. Alleles are one of several possible forms for a gene - they are not just another word for a gene. When an organism has two copies of the same allele they are homozygous (e.g., BB or bb). When an organism has different copies (e.g., Bb), it is heterozygous.)
Alleles are _______
amount of soil (The correct answer is: amount of soil. The amounts of liquid, sunlight and soil are kept constant in the experiment in order to remove their effects on the outcome - this makes them control variables. The height of plant is a dependent variable - it is the factor expected to change as the independent variable (type of liquid) is changed.)
Based on the experiment from the previous question, which of the following is a control variable?
heterozygous (The correct answer is: heterozygous. When an organism has two copies of the same allele they are homozygous (e.g., BB or bb). When an organism has different copies (e.g., Bb), it is heterozygous.)
In describing the inheritance of brown or blue eye colors, the brown alleles is referred to as "B" and the blue allele is "b". A "Bb" genotype would be referred to as?
3' to 5' (The correct answer is: 3′ to 5′.DNA templates are read in the 3′ to 5′ direction. New DNA strands are synthesized in the 5′ to 3′ direction.)
In which direction is a DNA template read?
triple point (The correct answer is: Triple Point. The triple point is the temperature and pressure point where the solid, liquid, and gas phases of a substance can exist in equilibrium. The Critical Point is where both the liquid and gas phases of a substance have the same density (i.e., are indistinguishable).)
On a phase diagram, the place where the solid, liquid, and gas phases of a substance coexist is referred to as what?
identification of a problem formation of hypothesis experimentation and data collection analysis of evidence determine whether evidence supports hypothesis determine conclusions communicate results (he typical steps in a scientific investigation include: identification of a problem or research question formation of hypothesis experimentation and data collection analysis of evidence determine whether evidence supports hypothesis determine conclusions communicate results)
Put the steps of a scientific investigation in the proper sequence. formation of hypothesis analysis of evidence communicate results experimentation and data collection determine conclusions determine whether evidence supports hypothesis
Ca has 20 protons in its nucleus. (The correct answer is: Ca has 20 protons in its nucleus. Elements are arranged by their Atomic Number (the number of protons in the nucleus). The relative atomic mass is presented in atomic mass units (amu). An amu is defined as 1/12 the mass of an atom of carbon-12.)
The atomic number of Calcium (Ca) is 20. This number means that _____.
temperature (The correct answer is: temperature. The kinetic theory of matter says that: constantly moving particles make up matter. The energy of a particle depends on its state. Gas particles have the most energy (most molecular motion), while solid particles have the least. The average kinetic energy of the particles is the temperature of a substance.)
The average kinetic energy of particles is the _____________ of a substance.
Modified dihybrid ratio (The correct answer is: modified dihybrid ratio. The breeding of Labradors is an example of epistasis where when two yellow alleles are present, the yellow coat color is expressed independent of the presence of brown or black alleles. The normal dihybrid ratio is 9:3:3:1, the 9:3:4 is an example of a modified dihybrid ratio.)
The breeding of Labrador dogs results in the following coat colors for the offspring: 9 black, 3 brown, 4 yellow. Which of the following terms describes this ratio?
CO2 (The correct answer is: CO2. This equation represents methane + oxygen → carbon oxide + water. For the equation to be balanced there must be equal numbers of atoms for each element on both the reactant and product sides. In this case, the left side is missing 2 oxygen atoms and 1 carbon atom (CO2).)
What is the missing item in this balanced chemical equation CH4 + 2O2 → ____ + 2H2O
4 (The correct answer is: 4. The equation should be: TiCl4 + 2 H2O → TiO2 + 4 HCl. Since there are 4 Hydrogen atoms (2 x H2) on the left side, there must 4 on the right side.)
What should X be in the following equation for it to be considered balanced? TiCl4 + 2 H2O → TiO2 + X HCl
freezing (The correct answer is: freezing. Freezing occurs when heat is removed from a liquid, turning it into a solid (e.g., water to ice.) Melting is turning a solid to liquid by adding heat. Evaporation is the turning a liquid into a gas by adding heat. Sublimation refers to a solid turning into a gas.)
Which of the following changes of state occurs when you remove heat from a liquid?
critical to the continuity of life and direct cellular activities such as cell division and protein synthesis (The correct answer is: critical to the continuity of life and direct cellular activities such as cell division and protein synthesis. The other responses refer to: proteins, lipids, and carbohydrates)
Which of the following describes nucleic acids?
duration (time) of experiment (The correct answer is: duration (time) of experiment. The other factors (completeness of data collection, presence of bias, and ability of results to be repeated) all are factors in determining how well an experiment was run (and thus its conclusions). The duration of an experiment is not necessarily a factor in the experiment or its conclusions.)
Which of the following is NOT a factor in determining the strength of a conclusion.
Mononucleotide (The correct answer is: mononucleotide. DNA is composed of multiple linked nucleotides (polynucleotide). DNA also copies itself (self-replicates, carries (genetic) information, and is unique among organisms.)
Which of the following is NOT a property of DNA?
starch (The correct answer is: starch. Starch is a type of carbohydrate. Waxes and fats and oils (as well as steroids and phospholipids) are types of lipids. Cholesterol is a common steroid.)
Which of the following is NOT a type of lipid?
low boiling point (The correct answer is: low boiling point. Water has an unusually high boiling point compared to other compounds with similar weights. Water is cohesive (facilitates surface tension). Water has a low density at solid state (e.g., ice floats on water). Water can absorb a large amount of heat (e.g., moderates earth's temperature).)
Which of the following is NOT a unique property of water?
flammability (The correct answer is: flammability. Physical properties include: color, hardness, malleability, solubility, electrical, conductivity, melting points, boiling points. Chemical properties include: toxicity, acidity, reactivity, flammability, heat of combustion.)
Which of the following is NOT an example of a physical property?
carbon (The correct answer is: carbon. Carbons are atoms not macromolecules. Carbon atoms, however, have special binding properties that help form macromolecules (carbohydrates, lipids, proteins, and nucleic acid). Enzymes are a type of protein which make them a macromolecule.)
Which of the following is NOT considered a macromolecule?
0.05 kg (The correct answer is: 0.05kg. 500 g = 0.5 kg (not 0.05 kg). 500 g is also equivalent to 5 hg, 50,000 cg and 500,000 mg.)
Which of the following is NOT the same as 500 g. 0.05kg 5 hg 50,000 cg 500,000 mg
osmosis requires energy (The correct answer is: osmosis requires energy. Osmosis is a form of passive transport that does not require energy. Osmosis is a specific form of diffusion that applies to water moving from high concentration to low concentration through a semi-permeable membrane.)
Which of the following is NOT true about osmosis?
gases (The correct answer is: gases. The kinetic theory of matter says that: constantly moving particles make up matter; the energy of a particle depends on its state. Gas particles have the most energy (most molecular motion), while solid particles have the least.)
Which of the following states of matter have the greatest molecular motion?
dehydration synthesis (The correct answer is: dehydration synthesis. Dehydration synthesis creates polymers from monomers (requiring energy). Hydrolysis is the reverse process (reverting polymers back to monomers). Sublimation is a chemical process that turns a solid into a gas. Exergonic reactions release energy.)
Which process builds polymers from monomers?
Electrons (The correct answer is: Electrons. Electrons have an overall negative electrical charge. Each proton has a positive electrical charge. Neutrons do not have a charge (electrically neutral) and are not attracted to either protons or electrons. Electron orbitals are complex shapes that describe the area around the nucleus where electrons are found.)
______ have an overall negative charge.
neutrons, protons, electrons (The correct answer is: neutrons, protons, electrons. Atoms have two regions: the small inner atomic nucleus (containing neutrons and protons) and the larger outermost region which hold electrons in orbit.)
_______ and ________ are located in the nucleus, while _______ are located in orbitals surrounding the nucleus.
