Answer:
In organisms during cell division, DNA is present in packaged structure called "chromosomes" with a constriction point called the centromere giving X-shape to the chromosomes. This forms a complete set of chromosome.The number of chromosomes present in the nucleus of the cell is known as ploidy number represented by "n".
Based on the number of chromosomes, cell is usually divided into: Haploid cell and diploid cell.
Haploid cells (n): are the cells with only one complete set or chromosomes like gamete cells while
Diploid cells (2n): are the cells with 2 sets or pair of chromosomes like somatic cells.
Population density is calculated by dividing the total population of a specific area by the total land area of that area.
The formula for population density is:
Population density = Total population / Total land area
To calculate population density, you need to know the total population and the total land area of the area you are studying. For example, let's say we want to calculate the population density of a city with a population of 500,000 people and a land area of 100 square kilometers.
Using the formula, we can calculate the population density as follows:
Population density = 500,000 / 100 = 5,000 people per square kilometer
This means that in the city we are studying, there are approximately 5,000 people living in each square kilometer of land.
Population density is an important measure that helps us understand how crowded or sparse a particular area is in terms of population. It is often used to compare different regions or to analyze population trends over time. By calculating population density, we can gain insights into the distribution of people and understand the impact of population growth on a specific area.
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Answer:
It's A
Explanation: took the test
Answer:
A) Gravity is the force that pulls objects toward Earth's center.
Explanation:
i took the quiz on ed.
The microscopic organisms at the base of the marine food chain are known as plankton.
Plankton are mostly microscopic animals and plants found drifting or floating I he ocean or in large bodies of fresh water , consumed as food by almost all aquatic animals.
Plankton which are more plant-like are referred to as phytoplankton, while plankton which more animal - like are referred to as zooplankton. However many plankton species are neither animal nor plant, rather they are organisms belonging to the kingdom Protista.
Examples of phytoplankton include diatoms, coccolithophores and dinoflagellates. These are the most common phytoplankton.
Zooplanktons include jellyfish, Portuguese Man o' War, copepods and isopods.
In an analogy between a factory and a cell, tRNA is like the 'delivery truck' that carries the necessary parts (amino acids) to the assembly line (ribosomes). It plays a crucial role in protein synthesis by translating the instructions from DNA and mRNA into a physical protein structure.
In the analogy between a factory and a cell, tRNA might be considered the 'delivery truck' that carries the necessary parts (amino acids) to the assembly line (ribosomes). DNA provides the instructions (genes), mRNA conveys these instructions to the ribosomes, and then tRNA transports the correct amino acids to the ribosomes based on the information in the mRNA. Each tRNA molecule contains an anticodon that matches a specific codon (set of three nucleotides) on the mRNA, allowing it to carry and add the corresponding amino acid to the growing polypeptide chain. This process of translation 'reads' the language of mRNA and translates it into the language of proteins. In other words, tRNA plays an essential role in the synthesis of proteins within a cell, facilitating the transfer of information from DNA and mRNA to a physical, functional protein structure.
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A. Superfund act
b. Nuclear Waste policy act
c. Clean air act
d. Clean water act
a. True
b. False
The statement that mucus membranes trap pathogens that are airborne is True
Thus, the statement that mucus membranes trap pathogens that are airborne is True.
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