BIOLOGY HIGH SCHOOL

The sandy beach system is important because:they protect upland areas from erosion
homes to hundreds of organisms
provide recreation for humans
all of the above

Answers

Answer 1
Answer: "All of the above," would be the est answer to your question.

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How can two species share the same habitat without driving the other to extinction?

Answers

it is not possible for two species with the same niche to coexist. one species will eventually drive the other into extinction

The type of RNA that is the major component cellular ribosomes is known asA. rRNA
B. pRNA
C. tRNA
D. mRNA

Answers

The answer is to that question i believe is: rRNA

In the nitrogen cycle, once a consumer gains nitrogen nutrients from animals or plants, it recycles these nutrients back to the earth by _____.

Answers

The correct answer to the question is releasing waste and decomposition. In the nitrogen cycle, once a consumer gains nitrogen nutrients from animals or plants, it recycles these nutrients back to the earth by releasing waste and decomposition.

What amino acid is carried by tRNA with anticodon, GUA?

Answers

Hi There! :)

What amino acid is carried by tRNA with anticodon, GUA?

The mRNA sequence that you have shown above has been given in triplets of bases. These triplets are called codons. Therefore the amino acid that tRNA will bring must be complementary to this hence called the anticodon. There is a rule. A always pairs with U (or T if it was a DNA strand) and C always pairs with G. 

For the first two triplets I will do the anticodon sequence then you can finish off : GUA GCC ..... 

Each codon or anticodon triplet codes for an amino acid. To find this out published tables are used. All the possible triplets will be on there. You will simply just have to read off the names of the amino acid stated next to it in that grid table. 

The theory of plate tectonics describes _______.

Answers

The correct answer for the question that is being presented above is this one: "The theory of plate tectonics describes the theory that Earth's outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core. The plates act like a hard and rigid shell compared to Earth's mantle."

Answer: The theory of tectonic plates says that the outer shell of the earth is divided into many plates. These plates glide over the mantle. The plates acts as the hard and rigid shell when compared to the earth's mantle. All the continents and sub continents are based on plates, continental drift can result in earthquake, tsunami, volcanic eruption.






In monocots the endosperm is a large portion of the seed, while in dicots this structure is virtually absent. Explain the absence of the endosperm in dicots

Answers

function of endosperm include in dicots like peas and beans food is stored in cotyledons not in endosperm that is why it is absent in dicots

What is endosperm ?

Endosperm developed  from the triploid cell (3n) in the embryo sac where the second male gamete fuses with the diploid secondary nucleus to form primary endosperm nucleus (PEN) and a triploid cell  which is called as triple fusion

Endospermic cells are mostly triploid but in some plants, they may be diploid (water lily) or polyploid (up to 15n)

In some of the dicots, mature seeds contain food stored in the endosperm, they are called endospermic or albuminous seeds, e.g. castor

In beans, peas, gram seeds, the endosperm is completely absorbed during development and food is stored in two cotyledons. They are called exalbuminous seeds

Endosperm mostly contains starch as a food reserve, but it may contain fats, e.g. castor, Endosperm provide nutrients to seeds during dormancy

Endosperm also contains certain hormones like cytokinins and helps in cell differentiation

For more details endosperm, visit

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function of endosperm:
in dicots like peas and beans food is stored in cotyledons not in endosperm that is why it is absent in dicots...
while in monocots  food is stored in endosperm not in cotyledons....
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