The variation of kernel color in corn plants is an inherited trait. R is the dominant allele for red kernels in a corn plant and r is the recessive allele for yellow kernels. What is the probability that a corn plant with the genotype Rr crossed with a corn plant rr will have offspring with the genotype rr? Express your answer as a fraction using numerals for numbers and / for the fraction bar. Do not include spaces.

Answer:

Option A

Explanation:

The flower cells are hypertonic to fresh water but hypotonic to the salt solution.

Flower cell is hypertonic to fresh water, this means that the amount of solute in the solution outside the flower cell is higher than the solute content inside the flower cell.

While when a flower cell is hypotonic, it means that the amount of solute in the solution outside the flower cell is lower than the solute content inside the flower cell.

This is the reason why a flower plant placed in vase of water stood and become erect, while the same flower placed in a salt solution wilted.

Hence, option A is correct

Final answer:

The flower cells behave as hypertonic in fresh water, causing them to absorb water and stand erect, while they act as hypotonic in a salt solution, leading to water leaving the cells and wilting the flower.

Explanation:

From the information given about the flower's cells, the correct answer is A) the flower cells are hypertonic to fresh water but hypotonic to the salt solution. This is due to the process of osmosis, which is the movement of water across a semi-permeable membrane, like a cell wall, from areas of low solute concentration (hypotonic) to areas of high solute concentration (hypertonic).

When the wilted flower was placed in the fresh water, the cells were hypertonic causing water to enter the cells and making the flower stand erect. This is because there were more solutes inside the cells than the fresh water solution surrounding them.

On the other hand, when the flower was placed in the salt solution, it wilted because the cells were hypotonic compared to the hypertonic salt solution. There were fewer solutes in the flower cells than the salt solution outside, so water left the cells, which made the flower wilt.

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Photosynthesis is the process whereby greenplants obtain their food using energy from sunlight.

WHAT IS PHOTOSYNTHESIS:

• Photosynthesis is a metabolic process in plant cells whereby they obtain their food (glucose) by using the energy from sunlight.

• Photosynthesis occurs in the chloroplast of plant cells. The equation for photosynthesis is as follows:

6CO2 + 6H2O → C6H12O6 + 6O2

Therefore, photosynthesis is the process whereby green plants obtain their food using energy from sunlight.

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The correct answer is - By using binomial nomenclature.

The ancient people were using their senses and their experiences in the defining of the plant and animal species. This was due to lack of technology, so they used what they had at disposal. Thus the binomial nomenclature is out of question for usage for the ancient people since they were nowhere near the technological level needed to perform such a thing and use it in their daily lives.

The answer is B. Every single amino acid has more than one codon.

There are 20 different amino acids, but there are more than 20 combinations of three nucleotide bases on DNA. There are 64 different combinations of three nucleotide bases on DNA, which is about 3 times more than the number of amino acids. Therefore, every single amino acid has more than one codon is the right answer. But, it should be taken into consideration, that 2 out of 20 different amino acids have only one codon - methionine and tryptophan.

Answer:

All are correct

Explanation:

An igneous rock can be converted into sedimentary rock when it is exposed to the surface because only then it will start decomposing by the action of water and wind

In the same way a metamorphic rocks on being exposed can be broken down into sediments

An igneous rocks can be converted into metamorphic rock when it is buried deep into the Earth crust  at high temperatures and pressures

Sedimentary rocks become metamorphic only when they are subjected to heat and pressure from burial.  

And lastly Metamorphic rocks of one form can be converted into metamorphic rock of other form.

Hence, all the given changes are correct

The equivalent energy of an object given its mass ,  through the equation,

                            E = mc²

where c is the speed of light (3 x 10^8 m/s)

Substituting the known values,

                            E = (1.05 g/ 1000) (3 x 10^8 m/s)²

                              E = 9.45x10^13 J

What are the 4 main energy?

• Potential energy
• Nuclear energy
• Chemical energy
• Mechanical energy

Thus, 9.45x10^13 J is answer.

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