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Pepsi [2]
2 years ago
13

What does the cell theory state? Name the three scientists mainly responsible for developing the cell theory.

Biology
1 answer:
storchak [24]2 years ago
3 0
The cell theory states that all the organisms are actually made of a single or multiple cells. It also states that that all the life functions of an organism occurs within the cell. The theory also states that all the cells are created from already existing cells. 
The three scientists mainly responsible for developing the cell theory are Theodre Schwann, Matthias Schlieden and <span>Rudolph Virchow.</span>
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Which vitamin can be synthesized in significant amounts by humans and, therefore, may NOT be essential
Nadya [2.5K]

Answer:

The correct ansqwer is- Vitamin D

Explanation:

Vitamin D is the vitamin that can be synthesized by the human body itself therefore it is not an essential vitamin for human beings. Human skin is the part that helps in making this vitamin in humans.

The natural form of vitamin D is vitamin D3 which is formed by the sunlight exposure on the skin. When we expose our skin in the sunlight the UV radiation penetrated our skin and converts provitamin D3 into pre-vitamin D3 then this previtamin can be isomerized into the natural form of vitamin D Which is vitamin D3. So the right answer is vitamin D.

5 0
3 years ago
In a monohybrid cross, if the gene for tall (T) plants was incompletely dominant over the gene for short (t) plants, what would
shepuryov [24]
Incomplete dominance is when the dominant allele is not fully dominant over the recessive allele. This results in three phenotype options rather than three. in this case T= tall, t= short and the two combined would be an intermediate height. A punnet square can help you figure this out.
         T     t
T      TT    Tt
t       Tt      tt

In this case you have one genotype that is two tall (TT) alleles. This will present as a tall plant.
The second genotype present is two  short alleles (tt). You have one of these that will result in a short plant.
The third genotype present is one of each (Tt). This will result in an intermediate height plant. This shows up twice in the punnet square.
Based on this you will have 25% tall, 25% short and 50% intermediate.

6 0
3 years ago
Which organic molecules form the major structural materials of the body?
dangina [55]

Answer:

Proteins

Explanation:

They are found everywhere in the body from muscle, cell membranes, hair, enzymes, and etcetera and are responsible for the phenotype of organisms. Proteins are the ultimate expression of genes in the DNA of organisms. The DNA is transcribed by DNA polymerase into mRNA, then mRNA is translated into protein by ribosomes. This general rule is called the central dogma.

4 0
3 years ago
A flower may have many stamens, but only one:
Musya8 [376]

Answer:

pistil

Explanation:

3 0
3 years ago
How can changes in biodiversity harm birds insects and bats that pollinates plants
Wittaler [7]
<h3><u>Changes in biodiversity harm birds insects and bats that pollinates plants:</u></h3>
  • As pollinators visit flowers to drink nectar or feed on pollen, they move pollen from flower to flower and help plants reproduce.
  • Pollination is an 'ecological service' which is referred as a role an 'organism plays in its ecosystem' which is needed for human life .
  • With changes in the biodiversity their routine eating habits are ruined as the plants they feed regularly upon might have transformed into poisonous or incompatible for their consumption.
  • There are many anthropogenic activities which are also acting a contributor for this.
5 0
3 years ago
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