taxonomist
2. a taxonomic category containing a group of similar genera
genus
3. a taxonomic category containing a group of similar species
family
4. the smallest taxonomic category
classification
5. a scientist who classifies organisms
taxonomy
6. the science of the classification of organisms
species
1. a system of distinguishing groups for purposes of identification - classification
2. a taxonomic category containing a group of similar genera - family
3. a taxonomic category containing a group of similar species - genus
4. the smallest taxonomic category - species
5. a scientist who classifies organisms - Taxonomist
6. the science of the classification of organisms - taxonomy
Answer;
-Pellicle
Explanation;
-Protist cells may contain a single nucleus or many nuclei; they range in size from microscopic to thousands of meters in area. Protists may have animal-like cell membranes, plant-like cell walls, or may be covered by a pellicle.
-On a paramecium's exterior is found the pellicle. The pellicle is stiff to maintain the paramecium's shape and provide stability but it is also flexible to allow movement. It also acts as an attachment site for external organelles such as cilia.
Answer:
Pellicle.
Explanation:
Malaria is the most significant parasitic disease of human. The disease is caused by protozoan of the genus Plasmodium. The most serious malignant malaria is caused byPlasmodium falciparum. It is transmitted by the female Anopheles mosquito. Plasmodium is a protist that cause malaria. Different types of species of the plasmodium are: P.vivax, P.malaria, P.ovale and P.falciparum which causes the most serious malignant called malaria.
Protist have animal-cell like membrane and is plasmodium is the example of protist. Its contain single nuclei or many nuclei. On a paracium exterior found a pellicle. Pellicle is a layered structure which surrounds the cells in many types of protozoa and also surrounds the cytoplasm. It is the non-extracellular like the cell wall of plants.
Answer:
Natural Selection can only occur to living organisms.
B. An unstable ecological niche leads to various selection pressures, which in turn causes the species to remain in a stage of stasis.
C. A stable ecological niche leads to various selection pressures, which in turn causes species to remain unmodified or in stasis.
I believe that species remain in a stage of stasis because they have completely adapted to the environment they are in and are able to live successfully without any evolutionary changes. The species has all the necessary traits in order to survive.
Answer: A) A stable ecological niche leads to absence of selection pressure, which in turn causes species to remain unmodified or in stasis.
I hope it helps, Regards.
I think the correct answer is A
The method is Phagocytosis
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Prokaryotes were divided into two domains, Bacteria and Archaea, based on RNA sequence differences. Genetic analysis revealed these two groups have fundamental differences at a molecular level. Despite both being prokaryotes, Archaea were found to be more similar to eukaryotes than to Bacteria.
Scientists divided prokaryotes into two major domains, Bacteria and Archaea, based on differences in their RNA sequences. It was shown through genetic analysis that there are fundamental differences between these two groups at a molecular level, especially in the structure of their ribosomal RNA (rRNA).
While both groups are prokaryotes, without a nucleus and other complex cell structures, Archaea were found to be more similar to Eukarya (the domain that includes all organisms with eukaryotic cells, including humans) than to Bacteria. As a result, these two prokaryotic groups were separated into individual domains, reflecting their distinctive evolutionary paths.
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Prokaryotes were divided into the two domains, Bacteria and Archaea, based on their cell membrane structure and differences in the ribosomal RNA. This division signifies the remarkable diversity within prokaryotic life, attesting to their adaptability in diverse environmental conditions.
Prokaryotes were originally classified into a single group, but with advancements in genetic analyses, it was observed that there were considerable genetic differences among them. This led to the division of prokaryotes into two domains: Bacteria and Archaea. Using DNA sequencing and studying of small-subunit ribosomal RNA, researchers like Carl Woese were able to identify major differences in the structure of cell membranes and in rRNA that validated the separation into these two domains.
Despite being prokaryotic and lacking a nucleus or membrane-bound organelles, there were significant differences between Bacteria and Archaea. These differences were as fundamental as the ones which separate prokaryotes from eukaryotes, leading to the introduction of the three domain system comprising Bacteria, Archaea, and Eukarya.
Prokaryotes are recognized as the first inhabitants of Earth, present in diverse and often harsh environments ranging from boiling hot springs to frozen terrains in Antarctica. Despite the harsh conditions, they exhibit great diversity in form and function, underscoring the immense adaptability of prokaryotic life.
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