Answer:
The inside is becoming positive.
Explanation:
The membrane potential may be defined as the difference in the electric potential between the outside and inside of the cell. This potential difference is important for the conduction of nerve impulse.
The depolarization of the cell occur due to the movement of sodium ions inside the cell. The depolarization of the cell changes the membrane potential from -70mV to +30mV. The inside of the cell become more positive than outside of the cell.
Thus, the correct answer is option (a).
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.
Traits that are sex-linked are carried on either the X or Y chromosome. If they are carried by a female, they are X-linked traits, and if they are carried by a male, they are Y-linked traits.
The similarities plant and animal bodies and cells include:
- Plant and animals bodies grow
- Plants and animals bodies have definite shapes
- Plant and animals bodies are covered by protective layers of cells
- Plants and animals both have plasma membranes
- Plant and animal cells contain organelles.
The differences plant and animal bodies and cells include:
- Plant have rigid bodies while animals have soft bodies
- Plants have leaves, branches and roots while animals have hands and feet
- Plants cells have cell walls while animals cells do not.
- Plant cells are rigid while animal cells are flexible.
<h3>What are plants and animals?</h3>
Plants are large eukaryotic photosynthetic living organisms found on the earth.
Animals are either multicellular eukaryotic organisms which lack the ability to manufacture their own food as plants do, but depend on plants and other animals for their food.
The similarities plant and animal bodies and cells include:
- Plant and animals bodies grow
- Plants and animals bodies have definite shapes
- Plant and animals bodies are covered by protective layers of cells
- Plants and animals both have plasma membranes
- Plant and animal cells contain organelles.
The differences plant and animal bodies and cells include:
- Plant have rigid bodies while animals have soft bodies
- Plants have leaves, branches and roots while animals have hands and feet
- Plants cells have cell walls while animals cells do not.
- Plant cells are rigid while animal cells are flexible.
Learn more about plants and animals at: brainly.com/question/489913
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The answer is; saturated soil turns into liquid that can't support buildings
Soil liquefaction occurs mainly in soils saturated, or partially saturated, with water such as in wetlands. During an earthquake, the waves pass through the soil and make it behave like a wave in a fluid. This causes the soil to loosen temporarily and become weak. The foundation of buildings in the soil fail and the structures collapse.
