Page 8 - SAAT BIOLOGY PART 1

SAAT BIOLOGY MR.MOHAMED ELGAYAR MRPROF.NET

• Viruses are not considered living things and therefore are

not classified in the current classification system of

organisms.

• Mouthwas h is the correct answer because many types

of bacteria are found in the mouth. The purpose of using

mouthwash is to reduce the numbers of these bacteria.

• Mutation may provide new characteristics that will allow

a bacterial cell to survive and reproduce despite the

presence of the thymol.

• Bacteria are often still present in products, such as

cheese. Safety should always be the top priority before

any other considerations.

• A retrovirus has a protein capsid surrounding a RNA

genome.

• Viruses can infect host cells only if they can bind to

specific receptor cells.

MRPROF.NET MR.MOHAMED ELGAYAR MRPROF.NET@GMAIL.COM 7