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yarga [219]
3 years ago
13

What are some good ideas for a science experiment/research?? For 8th graders??

Biology
1 answer:
Fiesta28 [93]3 years ago
5 0
I recommend a science project that could test wind. Cut up a few flaps on a paper, try to make a mini windmill out of straws and thin cardboard, and study the difference between how much force you give it, and the wind it produces to move the paper flaps.
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Carson divided 40 unripe bananas evenly among eight paper bags and sealed the bags. He poked 20 small holes in four of the bags
olga2289 [7]

Answer:

See the answer below

Explanation:

From the illustration of the experiment, the question that Carson can best answer  is that<em> "Do bananas develop more brown spots if they are kept in bags with holes  compared to bags without holes?"</em>

The independent variable in the experiment is the hole poked in the bags while the dependent variable is the number of brown spots on each banana. The difference between the subjects is the hole poked in the bags, hence, any difference in the number of brown spots between bananas in the bags with holes and those in the bags without holes can be attributed to the hole poked in the bags.

<u>Therefore, the question that can be answered from the experiment is to see if poking holes in bags make bananas to develop more brown spots compared to bags without holes. </u>

4 0
3 years ago
Below are a list of crosses and a list of progeny phenotypic ratios. Match each cross with the expected progeny phenotypic ratio
alina1380 [7]

Answer:

sorry

Explanation:

7 0
3 years ago
What role does the MutL protein play in DNA repair? (5 POINTS) It performs a proofreading function, similar to DNA polymerase, a
Zinaida [17]

Answer:

It recognizes and binds to a pair of "mismatched" nucleotides, preventing their translation.

Explanation:

Mut L protein is involved in mismatch DNA repair. MutL protein is complexed with MutS protein and the MutL-MutS complex recognizes all the mismatched base pairs present in the newly formed DNA strand. The complex can not recognize the "C-C" pairs. MutH protein joins the complex.

The MutH protein also has a site-specific endonuclease activity and cleaves the unmethylated DNA strand towards the 5' end of the guanine base in the GATC sequence to mark the strand for DNA repair. In this way, MutL protein, along with MutS and MutH proteins mark the mismatched DNA bases for repair so that they are not translated into a faulty protein.

5 0
3 years ago
What was the ecosystem from which the first terrestrial animals emerged?
Advocard [28]
Terrestrial ecosystems (tetrapods)
5 0
3 years ago
Read 2 more answers
Susan wants to see how
Allushta [10]

Awnswer\\rg: cool

exxscatmatiom

7 0
3 years ago
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