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bagirrra123 [75]
3 years ago
7

Need help with all the questions please help!!!

Biology
1 answer:
Galina-37 [17]3 years ago
4 0

Answer:

1. Gel electrophoresis

2. Suspect 2

3. The suspect's DNA matches with the DNA found at the crime scene.

4. The size of the "bands," and thus their relative resistance to movement in the agarose gel, causes them to spread out on the fingerprint.

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A wave with a frequency of 400 Hz is traveling at a speed of 100 m/s. What is the ​wavelength​? ​

shutvik [7]

The velocity (speed) of a sound wave (any wave in fact) is related to its frequency and wavelength by the equation . This is easy to remember since it's a distance divided by a time because frequency is the inverse of the period.

Since for sound traveling through the given solid object we have that  and , the speed of sound will be:      

this is what i looked up and got

5 0
3 years ago
PLSS help
Lina20 [59]

The energy source that is described in the image is light energy from the sun. The correct option is A.

<h3>What is chloroplast?</h3>

Chloroplast is a cell organelle that contains chlorophyll and aids in the process of photosynthesis in the presence of sunlight using carbon dioxide and water.

The missing image of the question is attached as an image.

The energy source that is described in the image is light energy from the sun.

Thus, the correct option is A.

For more details regarding chloroplast, visit:

brainly.com/question/11136550

#SPJ1

6 0
2 years ago
What would the result be if a drug that blocks the action of rna polymerase was introduced into a virus-infected organism?
Svetllana [295]

Answer:

The correct answer is: viral replication would stop.

Explanation:

Drugs that block the action of RNA polymerase in viruses are called antivirals and are used to cure viral infections like Hepatitis and Herpes.

<u>Antivirals do not destroy the virus but rather mess with its development by inhibiting its replication</u>.

Viruses do not have the capacity to replicate or synthesize proteins by themselves, so they need a host that can "lend them" the structures needed to perform those processes. If the drug blocks the RNA polymerase, the virus won't be able to replicate itself.

8 0
3 years ago
Read 2 more answers
Generally speaking, which of the following mutations would most severely affect the protein coded for by a gene?a) a base substi
Pavlova-9 [17]

Answer:

Answer is C.

Explanation:

For A and B, a base substitution affects one of the three bases that comprise a codon, the DNA/RNA unit that corresponds to a particular amino acid. If one base is substituted, one codon and therefore one amino acid will be affected. Codons have built-in redundancy, so even by changing one base, the new codon sometimes still corresponds to the same amino acid. Therefore, a base substitution at most affects one amino acid, and sometimes doesn't affect it all.

Frameshift mutations cause a lot more trouble. These occur when you have a deletion or insertion that changes the number of bases in your gene. As a result, the "frame" of the codons changes (everything shifts one way or the other by the number of bases added/removed). This affects EVERY codon downstream of the mutation, so you can imagine that such a mutation would have a bigger effect the closer to the start of the gene it occurs. This is why C is correct.

3 0
3 years ago
The cross-fertilization of two different, but true-breeding, varieties of pea plants will _____.
Tresset [83]

Answer: Result in Hybrid Plants

Explanation:

The cross-fertilization of two different, but true-breeding, varieties of pea plants will <u>result in hybrid plants</u>.

3 0
3 years ago
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