Question

PLEASE HELP

Answer 1

The correct answers are as follows:
1. D.
Linnaeus was the scientist who developed the modern system of giving names to living organisms, this naming system is called binomial nomenclature. During  the time that this naming system was developed, scientists have not known anything about micro organisms, thus, Linnaeus divided the living organisms in to just two kingdoms, that is, plants and animal kingdom. It was later after the development of the microscope that scientists become aware of microbes. 
2. D.
Living organisms are divided into seven categories, which are: kingdom, phylum, class, order, family, genus and species. The kingdom is the highest biological organisation and it contains the largest number of living organisms. The next level is phylum. The phylum category has many living organisms more than the levels that are below it. The species level has the least amount of living organisms.
3. B.
Before the advent of DNA sequencing, scientists typically classify animals based on similarity in their physical appearances. But, nowadays, the development of DNA sequencing has made it possible for scientists to compare animal on the basis of similarity in their genetic make up, due to the fact that related animals will be genetically identical.
4. C.
Viruses are peculiar micro organisms. Virus are considered to be non living things when they are outside of living cells. Outside the living cells viruses have all the properties of non living things. But, immediately a virus gets an entrance into a living cell, it becomes a living thing and start using the biochemical mechanisms of the host to survive and to multiply. Because of this dual nature, virus was not recognized in Linnaean taxonomy.
5. D.
The members of the domain Archaea do not have nucleus in their cells. All prokaryotes generally do not have true nucleus in their cells. The member of the domain eukaryota on the other hand have true nucleus in their cells. We are told in the question that the two organisms produce their young ones by laying egg, this implies that both organisms are possibly from the animal kingdom.
6. A.
Prokaryotes are divided into two classes: bacteria and archaea. The two classes has some basic differences between them,the difference include the folowing:
a. Bacteria cell wall is composed of peptidoglycan which is absent in the archaea cell wall.
b. Bacterial has only one ribosomal RNA polymerase while archaea has three ribosomal RNA polymerase. These RNA are different from one another.
7. B.
Eukaryotes typically reproduce by means of sexual reproduction. Sexual reproduction involves donation of reproductive cells by the female and the male that are involved in the production process. A reproductive process that is similar to sexual reproduction in bacteria and archaea is conjugation. Conjugation involves the transfer of genetic material by mean of direct contact. It is a sexual mode in which sexually distinct cells are brought in contact with each other.
8. D.
Antibiotic resistance is said to occur, when an antibiotic drug can no longer kill or control the growth of bacteria as it has been doing before. When antibiotics are used, the bacterial that can resist the action of the antibiotic survive while the other ones are wiped out. This result in the natural selection of the bacterial strain that can resist the antibiotic drugs. Bacterial developed resistance through many mechanisms, these include genetic mutation and acquisition of resistance from other bacteria.
9. D.
Endocytosis is the process by which some unicellular organisms such as Amoeba move food molecules into their cells. Amoeba can not produce its own food, it therefore feed on already prepared food molecules. It transport the food molecules into its cell by enclosing and engulfing it. Red algae on the other hand are plants which can photosynthesize, that is, they can produce their own food by using the energy from the sun.
10. C.
Mold grow in the presence of moisture, they need moisture to survive and to reproduce. That is why they are found in moist places. The best thing to do in this instance is to dry out the moisture in the moist place. This will automatically leads to the death of the molds because they will be deprived of sustenance.