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Scorpion4ik [409]
3 years ago
14

Melissa tested how fast sound waves travel through different media. She then ordered the speed at which the sound traveled throu

gh each medium from fastest to
slowest. Which data table represents the correct order that the sound waves traveled from fastest to slowest?
Fastest Speed
Medium Speed
Slowest Speed
steel
air
water
Fastest Speed
Medium Speed
о
Slowest Speed
water
air
steel
Fastest Speed
Medium Speed
Slowest Speed
O
steel
water
air
Fastest Speed
Medium Speed
Slowest Speed
air
steel
water

Biology
2 answers:
dybincka [34]3 years ago
6 0

Fastest Speed: Steel

Medium Speed: Water

Slowest Speed: Air

Gwar [14]3 years ago
3 0

Answer:

good luck

Explanation:

good luck

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How a plant cell and all its organelle functions to help a tree or plant survive, adapt and reproduce?
ArbitrLikvidat [17]

A plant cell is illustrated as a cell that comprises nucleus and organelles enveloped by a rigid and thick cell wall. The functions of the organelles are as follows:  

1. Cell membrane: It safeguards the cell and monitors the molecules leaving and entering the cell.  

2. Cytoplasm: It assists in holding the organelles of the cells in place.  

3. Cell wall: It is the main safeguarding barrier of the plant cells.  

4. Chloroplast: It transforms sunlight into energy by a procedure known as photosynthesis.  

5. Cytoskeleton: It provides structural support for the cell.  

6. Ribosome: It builds protein for the cell to utilize.  

7. Nucleus: It stores the DNA and coordinates the activities of the cell, mainly it acts as brain.  

8. Mitochondria: It convert oxygen and nutrients into energy.  

9. Lysosomes: It dissociate waste into basic components for other organelles to function.  

10. Endoplasmic reticulum: It transports and manufactures chemical components to and from the nucleus.  

11. Peroxisomes: It digests toxic substances in the cell.  

12. Golgi Apparatus: It transforms proteins and fats built in the cell and transports them outside the cell or prepares them for storage.  

13. Plasmodesmata: It allows communication and transport of substances to the nearby cells.  

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7 0
3 years ago
In the United States today, about half of the corn crop is genetically engineered with a protein that is toxic to corn borers, a
Fed [463]

Answer:

a. The corn borer must have or generate (by mutation) heritable variation in resistance to the toxic protein.

b. The resistant corn borers must survive better or reproduce more than nonresistant corn borers.

Explanation:

When there is a change in the surroundings of organisms, some genetic variations become beneficial to the organisms. Natural selection favors the organisms having these genetic variations.

The development of resistance in the corn borer population requires the presence of the gene for the resistance in the population. If there is no gene already present in the population, there should be a mutation to give rise to such gene/s. The corn borers having this gene should be able to survive better in the presence of the toxic protein and should leave more progeny in order to increase the frequency of the gene in the population over the generations.

6 0
3 years ago
What would be the most likely outcome if the ribosomes of a cell were damaged and stopped functioning?
galben [10]
Fundamentally, the cell would cease to function and possibly die. Proteins are used for cellular repairing and chemical processes. Ribosomes are one of the most important organelles in the cell, mostly part of the rough endoplasmic reticulum. It manufactures enzymes such as proteins which will be utilized by many organelles in the cell. Microtubules are one, responsible for the framework and acts as a skeleton of the cell –cytoskeleton needs proteins, also cytoplasm and other organelles of the cell. For a prokaryote or a eukaryote cell to survive, they need protein.



8 0
4 years ago
Read 2 more answers
During the cell cycle, A. DNA is replicated before mitosis begins. B. DNA is replicated once before mitosis and again before cyt
saw5 [17]

Answer:

The correct answer is A    DNA  is replicated before mitosis begins

Explanation:

DNA replication is one of the most significant event of a cell cycle. .DNA replication occur in the S phase or synthesis phase of the cell cycle.

       DNA is replicated once per cycle to maintain to normal chromosome number in daughter cells.

     DNA is replicated to form two new DNA molecules which are then equally distributed in each daughter cell during the mitosis phase.

5 0
3 years ago
A strand of DNA that is 36 nucleotides long codes for how many amino acids?
Margarita [4]

Answer:

See answer below

Explanation:

Hi there,

Assuming this DNA strand is fully capable of being mature mRNA (5' m7G cap and PolyA tail), nucleotides lead to an mRNA codon, which is 3 nucleotides per codon. In turn, 1 codon leads to 1 amino acid. However, as a single strand, it must be capable of terminating translation, which always requires a stop codon, and thus 3 nucleotides. Hence, we must subtract this from the total amount of codons <em>first</em>.

36 \ ncltd \ \frac{1 \ codon}{3 \ ncltd} = 12 \ codon\\12 \ codon - 1 \ codon \  = 11 \ codon\\11 \ codons\ \frac{1 A.A.}{1 \ codon}  = 11 \ A. A.

Hence, only 11 amino acids will be coded by a single DNA strand 36 ncltd long.

thanks,

3 0
3 years ago
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