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defon
4 years ago
12

Starting with the basic building blocks, which is the correct order of levels of

Biology
1 answer:
Kruka [31]4 years ago
8 0
Lungs, lung cells, lung tissues
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A population of 100 rats was analyzed for their genotype at the isocitrate dehydrogenase locus. There are two alleles (R and S)
goldfiish [28.3K]

Answer:

Yes, this population lies in Hardy-Weinberg equilibrium as it follows both the principles of Hardy-Weinberg.

Explanation:

Here ,

f(A)= p=0.575

f(B)= q=0.425

As per the first principle of hardy Weinberg, the sum of all the alleles at the locus must be equal to 1.

Thus,

p+q=1\\0.575+0.425 = 1\\1=1\\

Also, as per the second equation of Hardy Weinberg's equation-

p^{2} + q^{2} +2pq =1

(0.575)^2+2(0.575)(0.425)+(0.425)^2=1\\0.3306+ 0.48875+ 0.180625=1\\1=1\\

Hence, this population lies in Hardy-Weinberg equilibrium as it follows both the principles of Hardy-Weinberg

8 0
4 years ago
At a minimum, what structures or components must a cell contain to be alive
Alex17521 [72]
Cell is the structural and functional unit of life. It has various components that are important for its survival such as plasma membrane, mitochondria, endoplasmic membrane, nucleus, golgi body, etc.

Answer: At a minimum, for a cell to be alive, it must contain the following organelles:
1. Plasma membrane: It is the covering of the cell that is selectively permeable.
2. Nucleus: It contains genetic material which is important for DNA replication.
3. Mitochondria: It is the power house of the cell that synthesizes ATP.
6 0
3 years ago
The ecological efficiency at each trophic level of a particular ecosystem is 20%. If the green plants of the ecosystem capture 1
Allushta [10]

Answer:

1. 20 units

2. 4 units

Explanation:

In an ecosystem, energy is transferred from one organism occupying a trophic level to another as they feed on one another. The amount of energy that is being transferred as the chain progresses is called ECOLOGICAL EFFICIENCY. According to this question, the ecological efficiency at each trophic level of the ecosystem is 20%. This means that about 20% of energy units will be transferred to the next trophic level.

If the green plants of the ecosystem capture 100 units of energy, the amount of energy that will be available to support herbivores (plant eaters) is: 20% × 100units i.e. 20/100 × 100 = 20 units.

Also, the amount of energy that will be available to support carnivores subsequently will be 20% of 20 units i.e. 20/100 × 20 = 4 units.

4 0
3 years ago
Messenger RNA carries a(n) ___________ of the DNA’s instructions out of the nucleus to the ___________.
AleksandrR [38]

Answer: The correct option for the fill in the blank is  B) Transcript, ribosome.

mRNA is formed by a template of DNA in the nucleus of eukaryotic cells. The genetic information from DNA is transferred to mRNA in process called Transcription. mRNA is transported outside nucleus and helps in protein synthesis at the site called ribosomes.

mRNA thus carries a transcript of DNA instruction out of the nucleus. It helps in the formation of synthesis at ribososme ( present in the cytoplasm of the cell).

Thus, option B) is the right answer.

8 0
3 years ago
. Which is a likely location for primary succession? grassy hillside newly mowed field forest floor large boulder
lukranit [14]

Answer:

A likely location primary succession is a large Boulder.

Explanation:

primary succession begins on Rock formations, such as volcanoes on mountains, or in a place with no organisms or soil.

3 0
3 years ago
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