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astraxan [27]
2 years ago
8

4. Jimmy likes to work with his friend Joe in 7th grade science class labs. However, he notices that he tends to get lower grade

s when he does work with Joe, because he and Joe like to talk about basketball and not science. He's decided to investigate if his science lab grades are higher when he works with Joe or if they're higher when he works with someone else. He has set goals to become a better student, so help him write a hypothesis for his study. a. Manipulated variable b. Responding variable​
Biology
1 answer:
Bogdan [553]2 years ago
3 0

Answer:

If Jimmy works better with someone other than Joe, then Joe is a part of the problem of Jimmy getting lower grades.

b responding variable

Explanation:

If, then statements are used for scientific hypothesis's.

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Answer:

  In this given statement , the plastic base becomes negatively charged because  plastic is an insulator . And the metal cup does not become charged because  metal is a conductor.                              

Explanation:

<u>Reason behind , why plastic base becomes negatively charged -:</u> When a plastic base is rubbed with a dry cloth in the metal trophy, electrons are shifted from one material to the other. Thus, the substance that gains electrons (which is the plastic base) becomes negatively charged. thus , the plastic is an insulator , which causes charge (negative ) by rubbing.

<u>Reason behind , why the metal cup does not become charged -:</u>  The metal cup is a conductor, and the surplus charge on the metal flows to the person who charges the cup and to the ground so that it is not charged. Thus, rubbing a metal can trigger hand\finger injury because metals generate excess heat in rubbing .

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Alcohol dehydrogenase (ADH) is an enzyme that aids in the decomposition of ethyl alcohol (CH3OH) into nontoxic substances. Methy
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Answer:

d. Competitive inhibition will decrease because the proportion of the active sites occupied by substrate will increase.

Explanation:

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PKU and albinism are two autosomal recessive disorders,unlinked in human beings. if couple each of them heterozygous for both tr
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A. multiply the chance that it will be a boy x the chance he will have PKU (1/2 x 1/4) 

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Explanation:

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Tall pea plants are dominant, while short plants are recessive. In a cross between a purebred tall plant and a purebred short pl
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Answer:

1. tall (or heterozygous)

2. 3:1

3. carriers

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Explanation:

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