Free BMAT Assessment Trivia Questions and Answers — Questions and Answers
Question 1: 1- Gamete production is the only possible source of genetic variation in sexual reproduction. <br> 2- The environment can cause genetic variation. <br> 3- Mutations can produce genetic variation. <br> 4- Asexual reproduction always produces genetic variation. <br> Which of the following two assertions regarding genetic variation is true?
- 1 and 3 only
- 1 and 4 only
- 2 and 3 only (Correct answer)
- 2 and 4 only
Correct answer: 2 and 3 only
Explanation: <br> Statement 1 is likewise untrue because genetic variation can result from mutations as well. <br> Statement 2 is true because the environment can change gene expression (epigenetic variation), which can affect genetic variation. <br> Statement 4 is false because asexual reproduction results in children that are genetically identical to their parents and so to one another. <br> According to the justification for statement 1, statement 3 must thus be accurate. <br> Only statements 2 and 3 are thus accurate.
Question 2: A deep freezer with an open top is a common feature in supermarkets to keep food frozen but accessible to customers. <br> <br> Which of the following descriptions of the air in this open-topped freezer best explains why the products stay frozen?
- Compared to the hot air above the freezer, the cold air inside is denser. (Correct answer)
- Heat cannot enter the freezer because of the high temperature difference between the air inside and outside the freezer.
- Heat cannot enter the freezer because the temperature differential between the air within and outside is too small.
- Compared to the chilly air within the freezer, the warm air above it is denser.
Correct answer: Compared to the hot air above the freezer, the cold air inside is denser.
Explanation: <br> When compared to warmer air, the particles in colder air have less energy, move less frequently, and are arranged more orderly and closely together. As a result, cold air has a higher density than warm air. In order to keep the items close to the bottom of the freezer frozen despite the warmer air above, there would be a graduation of colder to warmer air traveling from the bottom to the top of the freezer.
Question 3: Human stem cells are being used by researchers to create remedies for a wide range of health issues. <br> For this task, two kinds of stem cells are available: <br> ‥ stem cells taken from a developing embryo <br> ‥ Adult bone marrow stem cells were used. <br> 1. Both of these stem cell varieties are capable of procreating daughter cells. The donor's genome will be present in one haploid copy in each daughter cell. <br> 2. Embryonic stem cells can develop into a wider range of specialized cells than adult bone marrow stem cells can. <br> 3. Using stem cell therapy to address a medical ailment can make a person more likely to get cancer. <br> Which of the aforementioned claims is true? (Assume no mutations take place.)
- 1 only
- 2 and 3 only (Correct answer)
- 1 and 2 only
- None of the above
Correct answer: 2 and 3 only
Explanation: <br> Because all stem cells divide by mitosis to create genetically identical diploid daughter cells, Statement 1 is untrue. <br> Statement 2 is accurate because adult bone marrow cells are multipotent, whereas stem cells derived from early embryos are totipotent (can develop into any cell type) (can differentiate into a few defined cell types). <br> Statement 3 is also true because if stem cells continue to divide, a tumor may develop. <br> Only statements 2 and 3 are thus accurate.
Question 4: The regular cost of a camera is 20% less during a sale. <br> The camera is available for purchase for £180. <br> <br> Which expression provides the camera's standard price?
- 180£ / 0.8 (Correct answer)
- 0.8 × £180
- 180£ / 0.2
- 1.02 × £180
Correct answer: 180£ / 0.8
Explanation: <br> Normal price x 0.80 = £180 <br> <br> Normal price = £180/0.80.
Question 5: There is a hereditary issue in some rabbits. This condition is encoded by the dominant allele. <br> The condition was passed from a homozygous dominant rabbit to a rabbit without it by mating. <br> They produced three children. <br> After mating with a rabbit that wasn't affected, one of the offspring again produced three offspring. One child did not have the ailment, whereas the other two did. <br> Each of the three generations of rabbits has one body cell that is in the early stages of interphase. <br> <br> How many copies of the conditional allele do these cells collectively contain overall?
- six
- seven (Correct answer)
- eight
- eleven
Correct answer: seven
Explanation: <br> Let R be the dominant allele and r be the recessive allele for this condition. <br> RR x rr can be used to symbolize the cross between the homozygous dominant rabbit and a rabbit without the condition. <br> This cross can only result in the genotype Rr, which is the only feasible outcome. <br> Then, Rr x rr, a rabbit having genotype Rr was mated with a rabbit lacking the condition. <br> The gene Rr must have been present in two of the kids from this cross because they both had the disease. <br> One of the offspring must have had the genotype rr because they did not all get the disease. <br> Consequently, each generation of rabbits has the following genotypes: <br> 1st gen = RR, rr <br> 2nd gen = Rr, Rr, Rr <br> 3rd generation is RRRRRR.<br> <br> Therefore, there would be seven copies of the R allele overall.
Question 6: A "gold medal," which is used on occasions like the Olympic Games, is composed of a silver-nickel alloy with a gold-silver alloy covering. <br> The medal weighs 256 g, of which the coating's mass is 24.0 g. <br> The gold-silver alloy has a density of 16.0 g cm-<sup>3</sup> while the silver-nickel alloy has a density of 10.0 g cm-<sup>3</sup>. <br> <br> What is the medal's volume?
- 24.7 cm<sup>3</sup> (Correct answer)
- 16.0 cm<sup>3</sup>
- 16.9 cm<sup>3</sup>
- 27.1 cm<sup>3</sup>
Correct answer: 24.7 cm<sup>3</sup>
Explanation: <br> Mass = density x volume, so volume = mass/density. <br> Mass of the gold-silver coating = 24g. <br> Mass of the silver-nickel = 256-24=232g. <br> Volume of the gold-silver coating = 24/16=1.5cm<sup>3</sup> <br> Volume if the silver-nickel = 232/10=23.2cm<sup>3</sup>. <br> Therefore the total volume of the medal must be 1.5+23.2=24.7cm<sup>3</sup>.
Question 7: A submarine employs sound with a frequency of 6000Hz to identify obstacles in the water in front of it. <br> This sound's pulse is reflected by a target 750 meters in front of the submarine. One second after being delivered, the pulse is received by the submersible. <br> <br> What is this sound's wavelength in the ocean?
- 25.0 cm (Correct answer)
- 8.00 m
- 12.5 cm
- 4.00 m
Correct answer: 25.0 cm
Explanation: <br> The sound travels to the object in front of the submarine and then back again, so travels 750×2=1500m. <br> Speed= distance/time <br> =1500/1 <br> =1500 m/s <br> Velocity= frequency x wavelength, <br> so wavelength= velocity/frequency <br> =1500/6000 <br> =0.25m=25cm.
Free BMAT Assessment Trivia Questions and Answers
1- Gamete production is the only possible source of genetic variation in sexual reproduction.
2- The environment can cause genetic variation.
3- Mutations can produce genetic variation.
4- Asexual reproduction always produces genetic variation.
Which of the following two assertions regarding genetic variation is true?