Answer:
The above paragraphs describes that how salt- and fresh-water fish regulates their osmoregulation. Hence, the correct answer would be c. have adapted to deal with osmosis.
Osmosis is the process by which solvent's molecule move from region of low concentration (hypo-tonic) to the region of high concentration (hyper-tonic) through a semi-permeable membrane.
In sea-water fishes, the body fluids are hypo-tonic to the surrounding water and thus water is kept moving out of their gills. In order to prevent the excess water loss they need to drink water constantly and excrete concentrated urine.
In contrast, fresh-water fishes body fluids are hyper-tonic to surrounding water and hence, water keeps entering in their body through gills. So, in order to prevent excess dilution they absorb salt from surrounding with the help of gills and also their bodies reabsorb salt from urine.
The statement above is FALSE.
Waste solvents are both flammable and toxic.
Waste solvents refers to the liquid waste obtained from the chemical processes that are performed in a laboratory. Such waste are labelled as hazardous, which means, they are toxic and harmful.
The words that comes in the blanks are phosphate group, phosphate group, a sugar group and a nitrogen base.
ATP stands for Adenosine triphosphate and DNA stands for Deoxyribonucleic acid.
<span>ATP is a nucleotide that is similar to DNA but it has 2 extra phosphate groups.
</span>DNA is made up of a nucleotide that consist of a phosphate group, a sugar group and a nitrogen base.
ATP stores energy in the form of a high energy phosphate bond which then joins the terminal phosphate group to the rest of the molecule. When the cell needs energy, it takes the ATP and converts it to ADP and phosphate. Rather than discarding them, they travel back to the mitochondria where they are recycled in order to produce another ATP!
