Kingdom Protista is probably comprised of groups of organisms that may not be closely related, and are undergoing continual assessment
<h3>What are the six - kingdoms of life?</h3>
The discovery of archaebacteria complicates the five-kingdom classification system for living organisms, which includes the prokaryotic Monera and the eukaryotic Protista, Fungi, Plantae, and Animalia. The prokaryotic Monera are divided into three groups: regular bacteria or eubacteria, cyanobacteria (also known as blue-green algae), and archaebacteria. Archaebacterial cell membrane lipids differ significantly from those of prokaryotic and eukaryotic cells, as do their cell wall composition and ribosomal RNA subunit sequence. Furthermore, recent research has revealed that archaebacterial RNA polymerases resemble eukaryotic enzymes rather than eubacterial RNA polymerase.
Archaebacteria have introns in some genes, an advanced eukaryotic feature previously unknown in prokaryotes.
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Movement A stentor moves by beating the cilia that cover its body. Feeding A stentor waves the ciliaaround its mouth and sweeps in food
The answer to the given question above would be option D. Based on the given scenario above about Anna collecting samples of a mineral, the property <span>of calcite that she could use to identify her samples as calcite rather than another mineral is ACID REACTION. Hope this helps.</span>
Answer:
the olfactory epithelium
Explanation:
There are several protective features of the respiratory system which is responsible for stopping the less aggressive pathogens. Some of these protective features are:
Hairs in nose which trap pathogens like bacteria, virus from entering the lungs. The respiratory tract has mucus which is responsible for trapping the microbes and mucus have IgA antibodies which helps in eliminating these microbes. Alveolar macrophages engulf the pathogen and digest them
Olfactory is not a protective feature of the respiratory system and is responsible and adapted to detect the odor and transfer this signal to the brain.
Answer:
500
Explanation:
Mutation rate is largely known as changes that occur in the frequency of a particular gene over an extended period of time
So given that;
the mutation rate of a particular gene = 1 × 10⁻⁶
The expected mutations after 500 million sperm are examined will be:
= (1 × 10⁻⁶)×(500,000,000)
= 500
Thus, The expected mutations = 500
