Bacteriophage doesn't have a nucleus.
Option C.
<h3><u>Explanation:</u></h3>
Bacteriophage is a virus that is present in our surroundings. Its a phage virus that attacks bacteria and killing it. Bacteriophage has a tadpole like structure with a polygonal head and a neck and 6 tails. The polygonal head is formed of carbohydrates, along with the neck and tails. The head has inside it DNA that is its nucleic acid and genetic material. It's not enclosed in any nucleus. It has some proteins inside the head too.
The phage virus attaches itself with bacteria and drills the bacterial cell wall by the neck and pushes the genetic material inside as a mode of infection.
Having a controlled group is very important.
Reason: If scientists did not have a controlled group then, they would have data for the test but they might know if the results changed or not. Scientists need a controlled group because the controlled group is like the original. They need the original group to help them know what improved or did not improve.
For example, if you were testing whether or not different types of music helps with studying, then you will need a group that does not listen to music so you can know if different types of music actually improve or just make studying worse.
Having a controlled group helps you know the difference between observations in a easier way. The controlled group is not something people should ignore. It might seem useless at first but, when a person starts to finish up their project or test then, they will understand why a controlled group is important. By the time they do, it might be too late so make sure you people use a controlled group(Especially in the Science Projects).
(Hope this helps : ) )
Answer:
Test tube A contained b-galactosidase which reacted with ONPG to produce galactose and o-nitrophenol
cause it's so deep in the ocean
Answer:
Evolution reflects the adaptations of organisms to their changing environments and can result in altered genes, novel traits, and new species. Evolutionary processes depend on both changes in genetic variability and changes in allele frequencies over time.
