BIOLOGY HIGH SCHOOL

Which statement about stomata is true?A.)The number of stomata is greater on the upper surface of the leaf.

B.)The number of stomata is greater on the lower surface of the leaf.

C.)The number of stomata is equal on both surfaces of the leaf.

Answers

Answer 1
Answer: The answer is B. The number of stomata is more on the lower surface of the leaf. The primary function of the stomata is to regulate moisture loss from the plant. The upper surface of the leaf is more exposed to the air and sunshine thus water is more susceptible to evaporation. However, the stomata is abundant on the lower surface, the location of it helps the plants to conserve more water 

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Which of the following statements about glucose is correct?A.) Glucose is a less stable carbon compound than carbon dioxide is.
B.) Glucose is a more stable carbon compound than carbon dioxide is.
C.) Glucose is produced during cellular respiration.
D.) Glucose is NOT a carbon compond

Answers

Glucose is a less stable carbon compound than carbon dioxide. So, the correct option is (A).

What is Glucose?

Glucose is defined as the simple sugar with the molecular formula C₆H₁₂O₆ which is the most abundant monosaccharide overall, a subcategory of carbohydrates.

It is the main type of sugar in the blood and the major source of energy for the body's cells that comes from the foods we eat or the body can make it from other substances. Glucose is carried to the cells through the bloodstream which involves several hormones such as insulin, regulating the level of glucose in the blood.

The three known forms of glucose can be crystallized:

α-glucopyranose, β-glucopyranose and β-glucopyranose hydrate.

Thus, Glucose is a less stable carbon compound than carbon dioxide. So, the correct option is (A).

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The answer is A!

A.) Glucose is a less stable carbon compound than carbon dioxide is.

Hope this helps!

The layer of solid ground that makes up all of Earth’s continents is called A. the lithosphere ****************************** B. the biosphere C. the atmosphere D. the hydrosphere

Answers

The layer of solid ground that makes up all of Earth’s continents is called the Lithosphere. Thus, the correct option for this question is A.

What is the Lithosphere?

The lithosphere may be defined as the rigid and outer part of any celestial body like earth. The lithosphere of the earth significantly includes the brittle upper portion of the mantle and the crust along with the outermost layers of Earth's structure.

In the region of the lithosphere, the rocks are cooler, stronger, and more rigid as compared to the other parts of the earth's surface. It is the strength of the rock and the existence of the continents that differentiated the lithosphere from other parts.  

Therefore, the lithosphere is the layer of solid ground that makes up all of Earth’s continents. Thus, the correct option for this question is A.

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The Lithosphere is the layer of solid ground that makes up all of Earth’s continents. It is the rigid, outermost shell of Earth.

What scientist designed an experiment that enabled the first successful detection of an individual subatomic particle?a. Niels Bohr
b. John Dalton
c. J.J. Thompson
d. Robert Millikan

Answers

The correct answer for this question is this one: "c. J.J. Thompson." J. J. Thomson is the scientist who designed an experiment that enabled the first successful detection of an individual subatomic particle. J.J. Thomson (Sir Joseph John Thomson, 1856-1940), who demonstrated in 1897 that "cathode rays" consisted of negatively-charged particles, later named electrons.

Answer:

d is the answear

Explanation:

into which group would you place a multicellular organism that has a mouth and lives inside the human liver

Answers

A multicellular organism that has a mouth and lives inside the human liver should be placed in the Animalia group.

Why did amphibians diversify so rapidly during the late Paleozoic era

Answers

They had little competition from other land dwellers

i think its because they had a little competition from other land dwellers.

 

                               HOPE THIS HELPS!

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Before leaving the nucleus, the pre-mRNA transcript formed through transcription undergoes a series of enzyme-regulated modifications. Part of the process is illustrated below. Without this modification, why would mRNA be translated into a nonfunctional protein?

Answers

Post transcription

Explanation:

Before leaving the nucleus, the pre-mRNA transcript formed through transcription undergoes a series of enzyme-regulated modifications which includes: 5'capping,splicing,3' cleavage(polyadenylation) and RNA editing

  • 5' capping is the first modification event in the pre mRNA that occurs after 20-30 nucleotide addition,in capping a 7 methyl guanosine(cap) is added to the 5' end of pre-mRNA
  • Splicing is the second modification event of pre-mRNA occurs in nucleus just after transcription but before the RNA moves to the cytoplasm
  • In RNA splicing non coding regions of pre-mRNA called introns are removed and coding regions called exons are religated
  • If this modification does not occur then introns will be copied from DNA that will interrupt the genetic code
  • Most of mature eukaryotic mRNA have 50-250 adenine residue at the 3'end called Poly A tail
  • These nucleotides are not encoded by the genome but are added after transcription,process is called polyadenylation
  • Polyadenylation is both template and primer independent process catalysed by polyadenylate polymerase and protects mRNA from exonuclease at 3'end
  • RNA editing is defined as the change of nucleotide sequence of RNA which is carried out in two different ways: site specific base modification and insertional or deletion type of RNA editing

Answer:

Introns are regions of pre-mRNA copied from DNA that interrupt the genetic code.

Explanation:

1. DNA is first transcribed into pre-mRNA, then this pre-mRNA further go series of modification, like 5' capping, 3' polyadenylation and RNA splicing.

2. Through splicing, introns are removed and exons are joined together to form a mature RNA known as mRNA.

3. If without these modifications, RNA is translated, it would encode non-functional protein because all the codons in the pre-mRNA would translated and introns would code a non-functional protein.
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