Answer:
C. The bacteria that survived were transformed with plasmid that contains the resistance gene for ampicillin.
Explanation:
Plasmids are small, circular double stranded DNA molecules that are found in bacteria. It carries genes that provides the bacteria with an advantage.
There are five types of plasmids namely, Fertility F-plasmids, resistance plasmids, Virulence plasmids, degenerative plasmids and the Col plasmids.
Ampicillin is an antibiotic that is supposed to kill the bacteria. However, most bacteria have resistance plasmids that can lead to antibiotic resistance.
That explains why some of the bacteria survived.
I believe it was
D, the light microscope !
Hope this helps! :)
Answer:
Hemophilia and color blindness are two common sex-linked conditions.
Explanation:
In humans, certain hereditary defects are linked to the X chromosome. The most important ones are colour blindness and haemophilia. Color blindness is a vision defect that is transmitted by a recessive gene carried on the X chromosome. The disease is more common in men than in women. Haemophilia is a serious disease in which blood take an abnormally long time to clot which leads to uncontrolled bleeding.
Most of the time m (M) means male and f (F) means female.
Answer:
True
Explanation:
The answer is true because Plastic is not a mineral. It is a solid and it has a definite chemical composition. Plastic is made from oil (an organic material) and it is made by humans - plastic is not a naturally occurring substance.
