Name three structures that various protozoa use for locomotion.
Answers
Answer:
Here are the 3 structures:-
Explanation:
The three structures that various protozoa may use for locomotion are:
Flagella: long, whip-like appendages that propel the protozoa by rotating or undulating.
Cilia: short, hair-like projections that cover the surface of the protozoa and move in a coordinated manner to create a current or a wave.
Pseudopodia: temporary extensions of the cytoplasm that push or pull the protozoa by changing shape and direction.
Final answer:
Protozoa use different structures for locomotion including flagella, cilia, and pseudopodia. Flagella are whip-like structures that some protozoa use to move around. Cilia are shorter and more numerous, aiding in movement and food collection. Pseudopodia, 'false feet', are temporary cell projections used for movement.
Explanation:
Various protozoa use different structures for locomotion, which allows them to move around their environment. Three primary structures used for movement include:
- Flagella: These are whip-like structures that extend from the cell body. Some protozoa, such as the Giardia lamblia, use this flagellum to propel themselves.
- Cilia: Shorter and more numerous than flagella, cilia cover the surface of certain protozoa like Paramecium, aiding in its movement and food capture.
- Pseudopodia: Literally meaning 'false feet', these are temporary projections of the cell. Amoeboid protozoa, such as Amoeba, use pseudopodia to move by extending a part of their body forward and pulling the rest of the body toward it.
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Related Questions
Why do many earthquakes and volcanoes occur along the Ring of Fire?
The structure of adenosine triphosphate (ATP) is shown here. Which statement best explains how energy stored in the chemical bonds of ATP can be released. A) Adenine is removed by hydrolysis from an ATP molecule. B) Electrons are removed by hydrolysis from an ATP molecule. C) A phosphate is removed by hydrolysis from an ATP molecule. D) A phosphate group is added to an ATP molecule with the addition of H2O.
A plant with the genotype TT is called _____.homozygousheterozygoushybrid
A biome is defined by it
Answers
HbS gene is a variant of the β-globin gene responsible for sickle hemoglobin. Sickle-cell anemia is a recessive disorder caused by the presence of two recessive alleles. But, when there is an outbreak of malaria, frequency of the recessive allele for the HbS gene will increase. This is because in an area with malaria, heterozygous individuals (with one dominant allele and one recessive allele) have an advantage. These individuals will have both normal and sickle hemoglobin. But pathogen that causes malaria affect only normal hemoglobin, so heterozygous individuals are more resistant to malaria.
Answer: The frequency of the recessive allele increases
Explanation: The HbS gene is a variant of the B-globin gene which is responsible for sickle hemoglobin. There is a recessive disorder called sickle cell anemia that is caused by someone having two recessive alleles. When there's an outbreak of Malaria the frequency of the recessive allele of the HbS gene increases because people that are heterozygous have the advantage due to the fact they have normal and sickle hemoglobin so they are more resistant to malaria because malaria will only take action on normal hemoglobin.
I hope that helps you :)
canoe. Use Newton’s third law to explain why this happened. Hint: First
identify the action-reaction pair in this example.
Answers
Answer:
Resistive force from canoe in backward direction
Explanation:
As per Newton's third law of motion for every action, there is an equal reaction and that too in the direction opposite the direction of main action.
Here, the action reaction pair is the contact point of Emilio or the Canoe.
When Emilio tried to jump on the dock, he exerted an action force i.e the KE+PE in the forward direction but while jumping he pushed behind the canoe which in turn exerted resistive frictional force in the backward direction on Emilio which restricted him from jumping exactly on the dock.
This is derived from Newton's first law of motion; every object in motion tends to stay in motion, unless acted upon by a different force. But this relates to the third law because inertia was counteracted by another force, gravity.
AGCCGTG.
CTAATGT.
CUAAUGU.
TCGGCAC.
none of the above.
Answers
Answer:
CUAAUGU
Explanation:
Answers
Final answer:
The Linnaean system of classification is still used because it provides an internationally recognized method for organizing and identifying species. Changes to the Linnaean system, like the addition of more kingdoms and the domain division, represent advances in scientific knowledge. Despite the modifications, the fundamental purpose of classifying biological diversity remains intact, making the system robust and adaptable.
Explanation:
We continue to use the Linnaean system of classification because it provides an internationally accepted method of organizing the vast diversity of life on Earth. Just like a library uses a classification system to organize books, taxonomy helps to organize and identify the millions of species on Earth. Changes to the classification system over time, such as the addition of more kingdoms and the higher division of domains, reflect advances in our scientific understanding, especially in the realm of genetics and molecular biology.
Carl Linnaeus initially categorized life into two kingdoms: the plant and animal kingdom. But with the expansion of scientific knowledge, three more kingdoms have been added to include fungi, protists, and monera (bacteria), and three domains were introduced: Bacteria, Archaea, and Eukarya.
These changes to the Linnaean system reflect the presence of more complex relationships among organisms than initially understood. The system remains robust and useful by accommodating changes based on new scientific discoveries and technological advancements. Its hierarchical nature allows it to be flexible and adaptable to incorporate new knowledge while maintaining its foundational purpose of classification. Hence, despite modifications made to this classification system since its inception, it continues to be the fundamental framework for typing biological diversity.
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(ill mark u brainlist)
Answers
Hey There!
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Answer:
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Active Immunity, Immunity which is acquired by the own immune response of the body.
Passive Immunity, Immunity which is acquired and dependent upon the antibodies transported from another person or even an animal. A person's immune system does not acquire or make the antibodies itself. A newborn baby acquires passive immunity from its mother through the placenta.
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Vaccination is a artificial active immunity. Artificial because the antibodies are not acquired by any natural infection but it is injected into the healthy body of the person. It is Active immunity because the body does not get already made (from other animal) antibodies but it acts on the small amount of the pathogen which is injected in the body and acquires the antibodies itself. So the person acquires antibodies naturally acting on the antigen. Antigen is any foreign agent which triggers the immune system to produce antibodies against it. Vaccines contains antigen which is a harmless form of the bacteria or a virus that causes the disease you are being immunised against. The bacteria or virus are in small proportion and greatly weakened in the vaccine so they just trigger an immune response without causing any real damage. When Vaccine is injected in the body, the immune system starts to make antibodies of different forms against the antigen(Virus or bacteria in the vaccine). When the appropriate shape antibody reacts with the antigen and forms antibody-antigen complex which destroys the antigen. This means that type and shape of antibody is perfect to work against that antigen, then the immune system start forming only those kind of antibodies in great proportion and the Person gets immunised by the vaccine in a natural way.
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Best Regards,
'Borz'
a vaccine works by training the immune system to recognize and fight pathogens, either viruses or bacteria. so certain molecules from the pathogen must be introduced into the body to trigger an immune response. so basically your not really immune your body will just know how to deal with it