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Mariulka [41]
4 years ago
9

Mary travelled 70 miles/hour due north.

Biology
1 answer:
Klio2033 [76]4 years ago
5 0

Answer:

It's D, velocity

Explanation:

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A protein that has the same function as another protein but which is encoded by a different gene and may have small differences in its sequence
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What significance is crossing over for evolution of a species?
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Crossing over is a process that happens between homologous chromosomes in order to increase genetic diversity. During crossing over, part of one chromosome is exchanged with another.

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Why are amphibians known as the ""planet’s greatest survivors""? How have they evolved over time?
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Amphibians are referred to as the "planet's greatest survivors" because they have repeatedly avoided extinction over the course of 400 million years.

<h3>How did the amphibians survive?</h3>

Over the years, the amphibians have had to adapt to various surroundings. Small animals called amphibians require water or a moist environment to exist. This group of species includes newts, salamanders, toads, and frogs. All have extremely thin skin that allows them to breathe and absorb water. Additionally, amphibians have unique skin glands that create functional proteins.

According to fossil evidence, amphibians descended from lobe-finned lungfish about 365 million years ago. They were very successful since they were the first terrestrial vertebrates. Some of them were considerably bigger than modern-day amphibians. The predominant group of land vertebrates for more than 100 million years was amphibians.

Learn more about amphibians here:

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3 0
2 years ago
Name the tissue that water travels up from the roots to shoots in a deciduous tree.
Leviafan [203]

The tissue that water travels up from the roots to shoots in a deciduous tree is xylem.

<h3>What is xylem?</h3>
  • Xylem is one among the two types of transport tissue in vascular plants, the opposite being phloem.
  • Transport water from roots to stems and leaves is the main function of xylem, but it also transports nutrients.
  • The word xylem springs from the Ancient Greek word ξύλον (xylon), meaning "wood"; the best-known xylem tissue is wood, though it's found throughout a plant. The term was introduced by Carl Nägeli in 1858.
  • The long tracheary elements are the most distinctive xylem cells that transport water. Tracheid and vessel elements are distinguished by their shape; vessel elements are shorter, and are connected together into long tubes that are called vessels.

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5 0
2 years ago
Investigate four substances containing nitrogen or phosphorous that are related to biological processes, and explain their respe
OleMash [197]

Answer:

Well, you already have the answer, but I can try to elaborate XD

So, DNA: contains genetic information that is necessary for biological functioning and reproduction.

More specifically, it contains the genetic instructions through gene encoding that instructs the cell what to do. A specialized complex ribosome interacts with the DNA molecules and "reads" it, changing the genes from the DNA into proteins that the cell as a whole can function upon. It is also crucial to forming a whole cell in offspring, since only the genes from the two parents combined (in humans at least) can produce an offspring with all genes intact. Those who do not have genetic disorders, a famous one being Down Syndrome.

Next, RNA: a molecule necessary for expressing genes and making proteins.

Connecting to the paragraph above for DNA, RNA also assists in the process by reading the ribosome that reads the DNA itself. Complicated, I know. All you have to know, however, is that the RNA, in this case called mRNA since it serves as a messenger, hence, the "m", reads the codons produced by the ribosome when it reads the DNA, and makes proteins according to those codons, and those proteins then scatter all across the cell to execute instructions.

Now, we move onto nitrogen and phosphorous: both are found in amino acids, the building blocks of proteins.

That is actually partially wrong. Amino acids do not contain phosphorous, but do contain nitrogen. Not exactly sure what went wrong on your end there, but nitrogen is a basic building block for amino acids, which are basic building blocks themselves for proteins. To be more clear, amino acids are made of carbon, hydrogen, oxygen and nitrogen atoms. No phosphorus there!

Finally, enzymes: special proteins that accelerate chemical reactions in cells.

This is correct. Enzymes typically lower the activation energy required for reactions to happen. More specifically, enzymes make the reaction molecules more active, hence, lowering the threshold for the amount of energy you have to put in before the molecules start crashing into each other hard enough to have a chemical reaction. Of course, enzymes do not participate in the reaction itself, which makes them incredibly useful for spurring on chemical reactions since they can be used multiple times.

Explanation:

Hope this helped!

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