Which is the first step of the scientific method

1 answer:

8 0

I'd have to say it's find an objective. Your leading question. :) Step 2 would be background research or a support. Hope this helps!

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Which type of membrane would be present in the largest quantity in a prokaryotic cell?

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<span>A. Cell surface membrane

prokaryotes have no organelles.</span>

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What are three major roles of proteins?

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: catalysing metabolic reactions, DNA replication, responding to stimuli, and transporting molecules from one location to another

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In fruit flies, the gene for red eyes (R) is dominant and the gene for sepia eyes (r) is recessive. If a red-eyed heterozygous f

ladessa [460]

The answer is Rr and rr.

We know:
r - recessive allele
R - dominant allele
RR - dominant homozygote with red eyes
Rr - heterozygote with red eyes (since one dominant allele R can mask recessive allele r)
rr - recessive homozygote with sepia eyes

Heterozygote Rr can give to the offspring either dominant allele R or recessive allele r. Recessive homozygote rr can give to the offspring only recessive allele r (take a look at the uploaded image of Punnett square).
After crossing the parents:
Parents: Rr x rr
Offspring: Rr rr Rr rr

So:
2 out of 4 offspring will be with heterozygous with red eyes Rr: 2/4 = 0.5 = 50%
2 out of 4 offspring will be with homozygous with sepia eyes rr: 2/4 = 0.5 = 50%

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4 years ago

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A squid moves through the water by ejecting water out of its body into the surrounding water when the water is pushed out the ej

dusya [7]

Answer:

The answer is Inertia

Explanation:

when the squid is pushing the water is pushing back at the squid, and the third law of inertia states:That for every action there is an equal and opposite reaction. so the squid is pushing the opposite way and the water pushes back.

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Answer

The arm and base of microscope are connected with each other with help of inclination joint. which provide easiness to user during research analysis or other microscopic studies.

It has significant role in light and compound microscope that need light for visualization of examine sample. It also help in easy rotation during focusing toward light for better contrast.

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