Answer:
Swim bladder
Explanation:
Swim bladder is an organ in bony fishes such as catfish that controls their buoyancy. It is also known as air bladder. The swim bladder contains gas, mainly oxygen and functions as a hydrostatic organ.
As the fish moves in deeper water, the gas in the swim bladder is contracted which decreases the volume of swim bladder.
You can reduce the amount of pollutants in your home by improving air circulation.
Answer:
The bacterial cells transformed with PUC18 and plasmid lux grow in the presence of ampicillin, because the DNA of bacterial cells had incorporated parts of plasmid DNA and became ampicillin resistant.
Explanation:
The bacteria showing this property is mainly known as Escherichia coli (E. coli). These bacteria cells generally shows no growth in presence of antibiotic like ampicillin. Whereas when these cells are treated with PUC 18 and plasmid lux, then the bacterial DNA undergo certain transformation due to incorporation of strands of DNA of plasmid into them. This transformation make them resistance to ampicillin, when they are cultured in agar media with ampicillin in it.
Answer:
water
air
animals
plants
solar system
light
Explanation:
Earth is one of the nine planets and it is the one known to host human life. Earth is made up of the atmosphere which contains gases needed to sustain life. Water, air, animals, and plants can be found on the earth.
Space is a vacuum that hosts the galaxies and sun which make up the solar system. The Sun emits light which can be reflected on the earth as the planets revolve around the sun.
