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MTEL Questions and Answers

QUESTION: 444

Based on the results of this experiment, of the people who died of coronary artery disease before age 65

1. 18 percent were women

2. 20 percent were women

3. 85 percent were men

4. 102 percent were men

Answer: C

QUESTION: 445

A group of 1000 men and 1200 women between the ages of 50 and 65 are to be studied for coronary artery disease. Based on the original study, which of the following results could be predicted most reliably?

1. Eight (8) women will die of coronary heart disease after they reach age 65.

2. Sixteen (16) women will show significant evidence of coronary artery disease.

3. Forty-four (44) men will die of coronary artery disease after they reach age 65.

4. Sixty-five (65) men will show no significant evidence of coronary artery disease.

Answer: B

QUESTION: 446

A chemistry student placed a strip of blue litmus paper and a strip of pink litmus paper in a glass dish. Then she added a drop of dilute sulfuric acid to each strip of litmus paper. She observed that the blue litmus paper turned pink, but the pink litmuspaper did not change color. Next she placed a drop of sodium hydroxide (NaOH) on other strips of blue and pink litmus paper. This time, the pink litmus paper turned blue, but the blue litmus paper did not change. Finally, she put a drop of distilled water onstrips of blue and pink litmus paper. Neither strip changed color. She repeated the tests several times with the same results. The student concluded that acids turn blue litmus paper pink; bases, such as sodium hydroxide, turn pink litmus paper blue.As water did not affect either pink or blue litmus paper, she reasoned that water was not an acid or a base, but a neutral substance. Keeping these results in mind, the student poured a little sodium hydroxide into a beaker containingpink and blue litmus paper. Then she added hydrochloric acid (HCl) drop by drop until the solutionbecame neutral. She determined that a new, neutral substance had formed in the beaker. The substance was table salt, or sodium chloride (NaCl), which isone of

many salts formed from an acid and a base. If a drop of an unknown substance turns blue litmus paper pink, but does not change pink litmus paper, the substance is a(n):

1. acid

2. base

3. water

4. salt

Answer: A

QUESTION: 447

In the presence of potassium hydroxide (KOH):

1. blue litmus paper turns pink

2. pink litmus paper turns blue

3. blue litmus paper becomes darker

4. pink litmus paper does not change

Answer: B

QUESTION: 448

When strips of blue and pink litmus paper are put in a beaker filled with a clear solution, neither litmus paper changes color. The solution:

1. must be water

2. must be neutral

3. may be an acid

4. may be a base

Answer: B

QUESTION: 449

In another experiment, the student added hydrochloric acid drop by drop to a solution of sodium hydroxide containing strips of originally blue and originally pink litmus paper. As she continued adding acid, the originally:

1. pink litmus paper remained pink

2. blue litmus paper remained blue

3. blue litmus paper turned from pink back to blue

4. pink litmus paper turned from blue back to pink

Answer: D

QUESTION: 450

Based on the results of this experiment, a salt would be formed when:

1. NaCl is combined with NaOH

2. H2O is combined with HCl

3. KOH is combined with HCl

4. HCl is combined with H2OSO4

Answer: C

QUESTION: 451

In setting up an aquarium, several factors must be considered before introducing fish. Which of the following factors could be tested using litmus paper?

1. salinity

2. acidity

3. chlorination

4. temperature

Answer: B

QUESTION: 452

The complex behavior of the poor-sighted, three-spined male stickleback fish has been studied extensively as a model of species behavior in courtship and mating. After a male has migrated to a suitable spot, he builds a spawning nest of sand and sediment. In courting, he performs a special "zigzag" dance. The female then follows the male to the nest where she spawns and he fertilizes the spawned eggs. Also, male sticklebacks have been shown to exhibit territorial behaviors. A biologist performed three experiments to learn more about the behavior of the stickleback. Experiment 1 Tank 1 and Tank 2 are set up with identical conditions and one male stickleback is placed in each tank. Both fish build nests in their respective tanks. The male from Tank 1 is removed from his tank and is replaced with an egg-laden female; the male from Tank 2

is removed from his tank and is introduced into Tank 1. In Tank 1, the male does not perform the zigzag dance and no spawning occurs. The male retreats to a corner of the tank. Experiment 2 A male stickleback in an aquarium builds his nest. A fat, round male is introduced into the environment. The original male performs the zigzag dance and attempts to lead the round male to the nest. The round male refuses and begins to flap his fins and swim in circles. The first male then begins to flap his fins, circle his nest, and occasionally prod the other fish to a far corner of the tank. Experiment 3 A small, flat-shaped female is introduced into a tank where a male has built a nest. The male circles the female a few times, and then retreats to a corner of the tank. The experimental data would support the hypothesis that the purpose of the male stickleback's mating dance is to:

1. keep away other male sticklebacks.

2. fertilize the eggs.

3. lure and entice the female to the nest

4. establish territorial rights.

Answer: C

QUESTION: 453

Based on observations from the above experiments, which factor initially stimulates the male to do the zigzag dance?

1. The physical environment.

2. The shape of the fish.

3. The number of fish in the tank.

4. The sex of the fish.

Answer: A

QUESTION: 454

Which experiment supports the hypothesis that the male exhibits territorial behavior?

1. 1 only.

2. 2 only.

3. 1 and 2 only.

4. 1, 2, and 3.

Answer: C

QUESTION: 455

To further investigate the territorial behavior of the stickleback, the biologist should vary which of the following factors in Experiment 2?

1. The temperature of the water.

2. The fatness of the male fish.

3. The sediment and sand in the tank.

4. The size of the tank.

Answer: D

QUESTION: 456

To clarify the results of Experiment 1, the biologist should set up which of the following test situations?

1. Maintain the positions of the male sticklebacks and add another egg-laden female to Tank 1.

2. Place both male sticklebacks in Tank 2.

3. Return the original male stickleback to Tank 1 and observe its behavior with the female fish.

4. Repeat the experiment using a different species of fish.

Answer: C

QUESTION: 457

A male stickleback has been established in an aquarium and has built a nest. If one egg-laden female and several flat-shaped male sticklebacks are placed in the tank, one would most likely observe:

1. all the males would perform the zigzag dance.

2. all the males would circle the female.

3. only the male that was originally in the tank would perform the zigzag dance.

4. the female would retreat to a corner.

Answer: C

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The so-known as "mode impact" become specially stated in English/language arts, where the discrepancy amounted to well-nigh a full year of gaining knowledge of, AIR discovered. lessen-performing students, particular schooling students, and English language learners suffered primarily sharp penalties when they took the ELA assessments online. In both ELA and math, besides the fact that children, the terrible consequences of taking the assessments on-line diminished significantly all the way through the second year of testing. "To our advantage, here is the first big-scale analyze of PARCC check-mode results carried out with assorted years of data across a complete state," in response to the paper, titled "Is the Pen Mightier Than the Keyboard? The impact of on-line testing on Measured pupil success," and posted in the February version of the academic journal Economics of schooling evaluation. "We find that college students administered an internet examination score systematically decrease than in the event that they had taken the look at various on paper," the researchers wrote. That conclusion is often per previous reviews and reporting, including a 2016 training Week investigation in which PARCC officers mentioned a ordinary pattern of online verify-takers scoring decrease than paper-and-pencil test-takers during the 2014-15 administration of the tests. in the years given that, PARCC (brief for Partnership for assessment of Readiness for faculty and Careers) has changed its organizational constitution and company model. most effective a handful of states at present use the whole PARCC exam. instead, a number of states now combine test objects developed internally with items leased from New Meridian, the nonprofit community that assumed manage of the now-defunct multi-state PARCC consortium's "merchandise financial institution." Massachusetts used a small handful of the new Meridian test objects in 2018. but as of 2019, that is no longer the case, in response to state training officers. sign in to get training Week's newest ed-tech news in your inbox. A spokesman for new Meridian acknowledged the mentioned mode results throughout the first two years of PARCC testing in Massachusetts, saying that state's rollout of the brand new tests was especially cumbersome. however extra contemporary interior analyses of PARCC administration in other states have discovered that the mode impact has evaporated over time, he stated. "To the extent that it exists, it looks within the first year or two of a transition from paper to computer-based mostly testing," the brand new Meridian spokesman stated in a statement. "through 2018, there turned into no significant effect." growing to be Familiarity With desktop-based tests all through the 2014-15 faculty year, roughly 5 million students throughout 10 states and the District of Columbia sat for the first official administration of the PARCC tests. In 2015 and 2016, Massachusetts allowed colleges to manage either PARCC or the state exam that had in the past been in use, the MCAS, brief for Massachusetts comprehensive assessment equipment. Districts who chosen PARCC might additionally choose even if to manage that exam online or offline. That flexibility led to at the least seven diverse variations of district checking out plans over the two-year length. In a statement, Bob Lee, the manager MCAS analyst for the Massachusetts department of basic and Secondary education, praised the AIR look at as "outstanding" and said state officers proactively took steps to make sure nobody become punished for taking state checks by means of computer. "Our assessment and accountability offices were aware that there have been enormous differences, on ordinary, between college students taking on-line and paper types of the test," Lee wrote. "In anticipation of the complex transition to on-line trying out, our board had decided to no longer use PARCC consequences for school accountability, and our board had also determined to cling faculties harmless for their participation if they took the PARCC examine." at present, Massachusetts makes use of a "subsequent-era" edition of MCAS, designed to be administered by way of computer. This 12 months, ninety eight percent of students in the state are anticipated to take the examination online, Lee referred to. The other 2 p.c of students will use paper tests as an lodging for a different need. Nationwide, the transition to online checking out has been driven with the aid of a number of perceived merits, including more flexibility in designing test questions and efficiency initiatives, sooner scoring, decreased opportunities for dishonest, and the chance to reveal students to greater expertise use. or not it's the final subject, besides the fact that children, that looks tied to the mode impact that frequently looks when the shift to laptop-primarily based trying out is first made. during the primary yr of on-line checking out, consultants say, students' unfamiliarity with the instruments and digital interfaces they're the use of to take the tests seems to force a huge portion of the discrepancy in ratings between online and offline look at various-takers. In Massachusetts, for example, the AIR researchers discovered the penalty for online test-takers in the first year of administering the PARCC math tests changed into about .10 commonplace deviations, or the equal of a bit greater than five months of discovering. The penalty for on-line examine-takers in ELA changed into a lot bigger, at .25 commonplace deviations, or eleven months of researching. however in the 2d year of PARCC checking out, these mode consequences had been a lot smaller: The penalty for on-line look at various-takers in math become about one-third the measurement of that present in 2015, whereas the penalty for on-line test-takers in ELA about one-half the measurement of that present in 2015. Implications for trying out coverage nonetheless, the finding of significant mode consequences within the early years of online testing has critical policy implications for states, districts, and faculties, the AIR researchers argued. different states relocating to the desktop-based mostly tests may additionally want to consider Massachusetts' "dangle harmless" coverage, they imply. The thought is to ensure that reduce ratings that outcome from taking the exams online, in place of from any lack of expertise or skill, do not have an effect on issues like conserving college students returned a grade, placing students into special education, instructor reviews, or faculty accountability selections. "States or districts that administer PARCC on-line to a few college students and on paper to other students may still be conscious that the paper college students will probably score systematically better, even in the second year," the analyze concludes. 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