1. Answer;
A. Eukarya
Explanation;
-Domain Eukarya contains mainly of organisms that are multicellular. This domain includes all multicellular organisms: plants, animals, fungi and protists.
-Another distinctive feature of Eukarya is the presence of membrane-bound organelles in many of the cells. This type of cell can divide in two processes mitosis and meiosis. It keeps its DNA in chromosomes
2. Answer;
C. Eukarya
Explanation;
-Domain Eukarya is a domain of organisms having cells each with a distinct nucleus within which the genetic material is contained.
-Domain eukarya includes eukaryotic organisms. These are organisms with cells that contain a nucleus as well as membrane-bound organelles.
-The kingdoms most associated with Eukarya are the Plantae, Animalia, and Fungi kingdoms.
3. Answer;
B. Bacteria
Explanation;
-Domain Bacteria includes the prokaryotes people encounter on an everyday basis. Most bacterial species are heterotrophic; that is, they acquire their food from organic matter. The largest number of bacteria are saprophytic, meaning that they feed on dead or decaying organic matter.
- A few bacterial species are parasitic; these bacteria live within host organisms and cause disease.
4. Answers;
A. Archaea
Explanation;
-Archaea are a domain of single-celled microorganisms. They have no cell nucleus or any other organelles inside their cells.
-Archaea are adapted to live in extreme environments. For example, archaea have a more stable membrane chemistry than bacteria and eukaryotes, which makes them better able to survive in extreme environments. However, archaea aren't restricted to extreme environments; they live in most of the same places as bacteria.
5. Answer;
B. Their cells are small and lack a nucleus.
Explanation;
Archaea and bacteria are both prokaryotes, meaning they do not have a nucleus and lack membrane-bound organelles. They are tiny, single-cell organisms which cannot be seen by the naked human eye called microbes.
-Other similarities includes; Archaea have generally the same shape, size, and appearance as bacteria., Like bacteria, Archaea multiply by binary fission and move primarily by means of flagella. These morphological similarities can make it difficult to visually tell a bacterium and an archaean apart. Additionally, archaea are more phylogenetically similar to eukarya than bacteria is to either of them.
6. Answer;
A. They live in extreme environmental conditions.
Explanation;
-Archaeal cells have unique properties separating them from the other two domains of life, Bacteria and Eukarya. Archaea, (domain Archaea), contain group of single-celled prokaryotic organisms (that is, organisms whose cells lack a defined nucleus) that have distinct molecular characteristics separating them from bacteria (the other, more prominent group of prokaryotes) as well as from eukaryotes
