BIOLOGY HIGH SCHOOL

Which molecule is classified as organic? A) water B) oxygen C) protein D) sodium chloride

Answers

Answer 1
Answer:

Answer:

The right answer to this question is option C. Protein

Explanation:

       First, what is an organic molecule? It's a molecule that contains Carbon in its composition, and by that, we'll jump into the options on the question. The first one is water, but as you can remember, there's no carbon in water's composition, only oxygen and hydrogen, so this is not a good option. The next one is oxygen, there's no carbon here too, so this is not good either. The last one it sodium chloride, and this one has no carbon either, only sodium and chlorine.
Answer 2
Answer: the answer is C. Protein

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Explain incomplete dominance using snapdragon flowers as an example

Answers

Incomplete dominance is a type of inheritance pattern that occurs in snapdragon flowers.

When none of the factors of a gene is dominant, the phenotype of a heterozygous dominant individual is a blend of dominant and recessive traits called incomplete dominance inheritance pattern.

  • flower color in Mirabilis jalapa (Snapdragon)
  • The red flower is the dominant character and the white flower is the recessive character.
  • There is the blending of the two alleles.
  • The flowers in the F1​  a generation will be pink in color due to the mixing of the alleles

Thus, Incomplete dominance is a type of inheritance pattern that occurs in snapdragon flowers.

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Answer:

Pink snapdragons are a result of incomplete dominance. Cross-pollination between red snapdragons and white snapdragons result in pink when neither the white or the red alleles are dominant.

Explanation:

when plants have a red color the dominant trait  the snapdragon flower is crossed with a plant having white color the recessive trait it resulted with a production of the plants with pink flowers you get the intermediate of a red and white flower.

Another Answer:

Incomplete dominance is seen in offspring that have a third phenotype not seen in the parents. Snapdragons are an example. The third phenotype results when a snapdragon with the red pigment protein crosses with a snapdragon with a defective gene that produces no pigment, resulting in a white snapdragon. The offspring receive one allele from each parent, resulting in half the amount of pigmentation for red color being expressed. The offspring will be pink snapdragons instead of red or white.

Mangrove pneumatophore roots _______.

Answers

Pneumatophore roots allow mangroves to gather oxygen from the atmosphere even if the soil or mud their in are flooded. The mud where mangrove grows are anaerobic which has poor in oxygen. Oxygen is vital for the survival of mangroves. Some of these roots erect upward. 

Answer:

Mangrove pneumatophore is the specialized root structures that are known to grow out of the water surface and help in the respiration of mangrove plants. They allow the collect oxygen from the atmosphere.  

It mainly grows in mud and there the conditions are anaerobic means lack of oxygen. Oxygen is necessary for their survival that is done by the mangrove pneumatophore roots.  


Which type of selection leads to increased phenotypic and genetic variation?

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The answer is B. Disruptive selection

Difference between first class and second class protein​

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Answer:

first- class proteins comes from eggs , meat  , fish and dairy products while non - animals related foods ,like vegetables and fruits, provide second - class proteins . first - class proteins contain a necessary amount of these important amino acids , but second - class proteins only contains some of them.

Explanation:

Gene is investigating what makes bread moldy. He put two identical slices of bread on separate plates. He made one slice moist and kept the other slice dry. He left the uncovered plates on a table for 2 hours. Then, he sealed them in plastic bags and put them in a dark, warm place. He looked at them each day for five days. After five days, he observed that 50 percent of the moist slice was moldy, and none of the dry slice was moldy. If Gene observed the slices for three more days, what would he most likely observe?

Answers

The answer is: There will be more mold on the moist slice and still none of the dry slice.

Molds belong to the kingdom Fungi. They are multicellular fungi consisting of multicellular filaments (hyphae). For growth, all molds need moist surface. This is the reason why in Gene's experiment, the only moist slice of bread was moldy. They have short life cycle, so 5 days were enough for molds to cover 50% of moist slice. Extended period of time will allow molds to spread more through moist surface if the surface remain moist.

Fastest neurons can send impulses at miles per hour

Answers

The answer is 250 miles per hour.

To communicate, neurons send impulses to other neurons or muscle cells. Depending on the nature of information needed to be sent, some impulses are faster than the other. For example, if a person burns its hand, the information must be quickly sent to the central nervous system for quick reaction. Some impulses can achieve 250 miles per hour. But, for this, axon must be well insulated and very thick.
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