Answer:
I think the answer is C
''Reusing plastic bags''
Explanation:
Removing carnivores from a forest has a great impact on a environment since the population of the herbivores will increases drastically and the dynamic equilibrium of the area will be greatly effected.
If we look at choice B '' Heating homes with fossil fuels'', this will also have a big impact on the earth since fossil fuels are non-renewable and take centuries to form. Heating homes with them will result in loss of fossil fuels.
Now let's look at choice D ''Adding heavy metals to the water supply''. Heavy metals are dangerous to the human health and even cause cancer. This will cause thousands of deaths and will also have a great impact on the global stability.
This leaves choice C ''Reusing plastic bags''. This will cause less pollution and less harm to wildlife but doesn't have any big threat to the global stability. As in changing the world population or causing deaths in large numbers.
so I think choice C is the answer
Answer:
1. A mutation that causes changes in the amino acid sequence downstream of the mutation is called FRAME SHIFT MUTATION. The correct option is D. A frame shift mutation is one in which the mutation is caused either by the addition or deletion of base pairs in the DNA of a gene, this results in the translation of the genetic code in the wrong reading frame starting from the position of the mutation to the end of the affected gene. Frame shift mutation result in the production of nucleotide that are not divisible by three. Because the nucleotide codons are usually pair in three, frame shift mutation causes a change in the reading frame and this result in a protein translation that is different from the original.
2. The correct option is D.
If the third base A is deleted from the codon given in the question, it will results in the formation of frame shift mutation and this will change the translation of the protein from leucine to tyrosine. The deletion will not affect the first amino acid in the sequence.
3. Albinism is a type of mutation that can is described as DELETERIOUS. The correct option is D.
Deleterious mutation refers to any type of mutation which reduces the fitness of a living organism. Albinism is a medical condition in which an individual experience a partial or total loss of skin pigmentation. The condition is a genetic disorder that is caused by lack of adequate amount of melanin pigment in the skin. Albinism causes vision loss, extreme sun sensitivity and stigma.
4. The type of mutation that occur is INSERTION. The correct option is B. Insertion is a type of mutation in which one or more nucleotide base pairs are added to a DNA sequence. The inserted base pairs can be small or large. Examples of disease conditions that resulted from insertion mutation are Huntington's disease and fragile X syndrome.
A. Immune because this is what the immune systems job is
Answer:
Neither the solute nor the solvent (water) will move in any direction
Explanation:
Concentration of salt with in the cell = 2%
Concentration of salt of the solution in which the cell is placed is 2%
Since there is no change of concentration of salt with in cell and outside the cell. Hence, there will be no net movement of solute or solvent.
Answer:
Mitochondria
Explanation:
These organelles are responsible for the development of ATP molecules in cellular respiration. Muscle cells require a lot of energy since they are the powerhouses for movement. ATP is the energy currency for cells hence they are required in abundance in muscle cells.
