The correct answer is protozoa.
Binary fission is a type of asexual reproduction. It is the most general kind of reproduction in prokaryotes, like bacteria. It also takes place in some kind of single-celled Eukaryotes, protozoa, like Paramecium and Amoeba.
In protists, like protozoa, the binary fission is usually distinguished into types, like longitudinal or transverse, on the basis of the axis of cell separation.
Binary fission is the most common form of reproduction in protozoa. Therefore, the correct answer is option d.
Binary fission is a method of asexual reproduction in which a single-celled organism divides into two identical daughter cells. Here's an explanation of binary fission and its relevance to protozoa:
Single-Celled Organisms: Protozoa are a diverse group of microscopic, single-celled organisms belonging to the domain Eukaryota. They are found in various aquatic and terrestrial environments.
Asexual Reproduction: Many protozoa reproduce asexually through a process known as binary fission. In binary fission:
Significance for Protozoa: Binary fission is significant for protozoa for several reasons:
Contrast with Other Organisms: While binary fission is common in protozoa, it differs from the reproductive methods of multicellular organisms such as animals, plants, and fungi:
In summary, binary fission is the primary mode of asexual reproduction observed in protozoa. It allows these single-celled organisms to efficiently replicate themselves and adapt to their environment by producing genetically identical daughter cells. This method is essential for the survival and proliferation of many protozoan species.
Learn more about Binary fission here:
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d. using a standard unit of measure for the duration of the study
Circumstantial evidence
Crime Scene Reconstruction
Direct Evidence
pepsin
B)
trypsin
C)
amylase
D)
pepsin and trypsin
Answer: A) Pepsin
Explanation: Acidic solutions are solutions which provide H^+ ions .More is the H^+ ion concentration, more acidic is the solution.
pH of a solution is defined as negative logarithm of H^+ ions concentration.
or
Thus lesser is the pH,more is the H^+ concentration and more acidic is the solution.
Thus acidic solutions have low pH and pH ranges from 1 to 7 for acidic solutions.
As can be seen from the graph, enzyme pepsin has highest activity at low pH which means in acidic solutions. As the pH is increasing or the solution is turning basic, the activity of pepsin decreases.
Answer:
PLASMA IS CORRECT
Explanation:
The sun, just like all other stars is made up of a state of matter that is a lot more common than solids, liquids or gasses. It is known as Plasma. Plasma can be created by heating a gas or subjecting it to a strong electromagnetic field, applied with a laser or microwave generator at temperatures above 5000 °C.
Answer:
Pulling apart or separation of sister chromatids
Explanation:
Meiosis is a type of cell division that results in four daughter cells with each having half number of chromosomes as the parent cell. It is the cell division that leads to formation of gametes to enable sexual reproduction. Division occurs twice during meiosis because before the two halves of a duplicated chromosome called sister chromatids separate, it still needs to separate homologous chromosome, which is a similar but non-identical pair of chromosome received from both parents. Hence, meiosis occurs in a two step division process i.e. Meiosis I and Meiosis II.
Meiosis II is the mitotic division of each of the haploid cells produced in meiosis I. Note that, homologous chromosomes separate in anaphase I of meiosis I, and further undergoes cytokinesis (division of cytoplasm) to produce two haploid (reduced number of chromosomes) daughter cells.
During anaphase of meiosis II, the individual chromosomes (sister chromatids) separate at the centromeres (point of attachment between two sister chromatids). The separated chromosomes are pulled apart towards each pole of the cell by the spindle fibres.
Answer:
Explanation:
Nicotine is a type of stimulant that is chemically alkaloid. It works as the receptor agonist at the nicotinic acetylcholine receptor. It is a type of addictive chemical that increases the blood flow, heart rate and some biochemical reactions of the body. In the brain, it has stimulation as well as blocking effect. Medically, it is used for various purposes such as quitting smoking and some other.
Nicotine stimulates and then blocks cholinergic receptors in the brain, leading to both stimulating and relaxing effects.
Nicotine acts in the brain by first stimulating and then blocking cholinergic receptors. It first acts as a stimulant, increasing the release of acetylcholine, which causes excitatory effects in the brain. Eventually, the cholinergic receptors become desensitized and eventually blocked, leading to a reduction in acetylcholine's activity. This process helps explain why tobacco usage can both stimulate and relax users. When nicotine binds to these receptors, it activates them, leading to the release of dopamine and other neurotransmitters, producing pleasurable effects.
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