Classify each description as being a characteristic of microtubules, intermediate filaments, or actin filaments.

Final answer:

After meiosis, a cell that originally has 46 chromosomes will have 23 chromosomes. Meiosis reduces the chromosome number by half, resulting in haploid gametes with immense genetic variability due to independent assortment and crossover.

Explanation:

If a cell has 46 chromosomes, it would have 23 chromosomes after completing meiosis. Meiosis is a special type of cell division that reduces the chromosome number by half to produce gametes for sexual reproduction. After meiosis, each of the resulting four haploid cells contains half the DNA of the parent cell. Humans have 23 pairs of chromosomes, totaling 46 in a diploid cell. During meiosis, these pairs are separated, and thus each gamete ends up with 23 individual chromosomes.

Furthermore, this meiotic process contributes to genetic diversity through mechanisms like independent assortment and crossover. There are over eight million possibilities in chromosome alignment due to independent assortment alone (223 combinations), not including the variability created by crossover events. This ensures that each gamete, while having 23 chromosomes, is genetically unique.

Notably, somatic cells, which make up most of the body tissues and organs, typically have 46 chromosomes and are diploid, while gametes, being the reproductive cells, have 23 chromosomes and are haploid.

After meiosis, a cell will have 23 chromosomes.

Meiosis is a specialized cell division process that occurs in sexually reproducing organisms, reducing the chromosome number by half. In the context of a human cell with an initial count of 46 chromosomes, meiosis involves two sequential divisions: meiosis I and meiosis II. In meiosis I, homologous chromosomes separate, resulting in two daughter cells, each with 23 chromosomes.

These cells then undergo meiosis II, which resembles mitosis but involves haploid cells. Ultimately, four haploid cells are produced, each containing 23 chromosomes, representing half of the original chromosome number. This reduction in chromosome count is crucial for sexual reproduction, ensuring that when gametes (sperm and egg cells) fuse during fertilization, the resulting zygote restores the diploid chromosome number characteristic of the species.

Answer:

The proof that in any synthesis reaction, a chemical change has occurred is that in a synthesis reaction, two reactants combine to form a new compound.

Explanation:

Answer:

The last 2 answers above are right but the first is wrong. The answer to number 1 is Internal. Hope this helps!

Explanation:

The correct answer is option B

The statement that describes the journey westward in the mid-1800's is - It took a long time and included a number of difficult obstacles.

The people or travelers experienced several obstacles like-  they included rivers to cross, they had vast mountain ranges, it possessed wild animals, there was threat of various diseases and had lack of basic resources. And eventually these hurdles made the traveling time taking.

The correct answer is option (C). The Edwards brothers rebelled against Mexico because mexican settlers did not recognize their land rights.

The Edwards brothers, along with other settlers in Texas, rebelled against Mexico due to a variety of reasons, one of which was the lack of recognition of their land rights by Mexican settlers. This was a significant issue because it undermined the settlers' ability to maintain control over their property and livelihoods.

Option A is incorrect because Mexican officials permitted other people to live on their land, but this was not the primary reason for the rebellion. Option B is incorrect because Mexican troops did not forbid them to settle on their land; in fact, the Mexican government had initially encouraged American settlement in Texas.

Option D is also incorrect because Mexican officials did not permit slavery on their land; on the contrary, Mexico had abolished slavery, which was another point of contention for some of the settlers who wanted to continue the practice.

Answer:

underreplication or overeplication of the genome and can produce a large array of human genetic diseases, including cancer, birth defects, and many developmental abnormalities

Explanation:

All living things share a common connection as they are part of the tree of life or the web of life on Earth. This connection is based on the concept of biological evolution, which explains that all living organisms on our planet have evolved from a common ancestor over billions of years.

All living things, from simple bacteria to complex multicellular organisms, are united by their shared genetic material, the fundamental biochemistry of life, and the presence of cells as the basic structural and functional units. They also exhibit characteristics such as growth, reproduction, adaptation, and response to stimuli.

Additionally, living organisms interact and depend on each other within ecosystems. They form intricate relationships as producers, consumers, and decomposers, participating in nutrient cycles and energy flow. Organisms often rely on each other for resources, such as food, shelter, and symbiotic relationships.

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Plates move apart at divergent boundaries. Divergent boundaries are locations where tectonic plates are pulling away from each other.

The correct option is C.

At divergent boundaries, tectonic plates move apart from each other. This movement is driven by the underlying forces of mantle convection and the upwelling of molten material from the Earth's mantle.

Divergent boundaries are commonly found along mid-ocean ridges, where new oceanic crust is formed. The process of seafloor spreading occurs as two tectonic plates move in opposite directions, creating a gap or rift between them. Magma from the underlying mantle rises to fill the gap, solidifies upon contact with the cold seawater, and forms new crust. This continuous upwelling and solidification of magma along the divergent boundary leads to the widening of the seafloor and the creation of new oceanic crust.

Hence , C is the correct option

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the way to get this answer would be to find the answer that has less undissolved mass because you have to find the one with higher solubility, which also means the one that can dissolve the most mass.

Solubility is the solute's ability to get dissolved in the solvent to form the saturated solution. The solubility of substance B in beaker B is more as compared to substance A.

The capacity of the solute to form a solution with a solvent is defined by solubility. The solubility depends on many factors like pressure, mass, reactivity, temperature, etc.

The solubility is directly proportional to the temperature and increases with a rise in temperature. The mass of substance A is higher than that of substance B at all the temperatures and hence its size may be large.

Therefore, the mass of substance B is dissolved more at all temperatures as compared to substance A.

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Answer:

Your answer is D.  It will contaminate the soil and water in the ocean.

Explanation:

The oil drill is in the ocean, so it cannot be A since all of the plants are underwater. Oil is not radioactive so it cannot be B either. Greenhouse gases cannot pollute soil and only cause air pollution, so it cannot be C. D is the only reasonable choice since the oil is being mined directly from the ocean floor and may contaminate the surrounding soil and water.

Answer:  He showed how traits are passed between generations

Explanation: Apex 8/14/19

Presence of a double membraned organelle (chloroplast) confirms that this is a eukaryotic cell, probably a plant cell. In contrast, prokaryotic cells do not have double membrane bounded organelles whereas both prokaryotic and eukaryotic cells have cytoplasm, DNA and membrane.

The best fit statement would be that the cell is eukaryotic as it comprises of chloroplasts.

Further Explanation:

Chloroplasts are a kind of plant cell organelles. These are essential for carrying out photosynthesis. It captures the sunlight, transforms it, and stores it in the energy storage molecules NADPH and ATP while releasing water and oxygen in the plants and algal cells.

Eukaryotic cells are those cells which comprise of organized organelles as well as nucleus which is wrapped by nuclear membrane. For instance, plants, animals, fungi, and protists. The genetic material of such organisms is arranged in chromosomes. Such cells comprise of many structures which perform different functions in the cell. For instance, ribosomes are responsible for making the proteins, mitochondria is known to produce energy molecules in the form of ATP, and endoplasmic reticulum aims in sorting and packaging the proteins. All the organelles are floating in the cytoplasm.

A prokaryotic cell, on the other hand, is a single celled and simple organism that lacks a nucleus or any other membrane-bound organelles. DNA or deoxyribonucleic acid is known to be a central segment of the cell or a darkened area which is called as nucleoid. All the cells share four main common elements:

1. Plasma membrane

2. Cytoplasm

3. DNA

4. Ribosomes

In the provided case, chloroplast is present and this confirms that the cell is a eukaryotic cell.  

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1. Learn more about the treatment of eukaryotic cell with a drug https://brainly.com/question/10767798

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Answer Details:

Grade: High school

Subject: Biology

Chapter: Plants

Keywords:

Prokaryotic cells, eukaryotic cells, chloroplasts, DNA, cytoplasm, mitochondria, plasma membrane, endoplasmic reticulum, ribosomes, nucleoid.

Answer:

Rubidium is most active metal in period 5

Explanation:

There are total 18 elements in the fifth period of element table. There are total 18 elements in this period out of which rubidium is the smallest and lies at the starting of the fifth period. Unlike other elements of its group , rubidium is an alkali metal and has an oxidation state of +1 which makes it highly reactive. It reacts violently in air and water.  

Answer:

A. All cells came from preexisting cells.

Explanation:

Rudolf Virchow is one of the scientists being credited for postulating the cell theory. He specially worked on the third component of the theory which said that all cells come from preexisting cells. Previously it was believed that new cells formed from a fluid substance called as blastema. Blastema imbalance lead to various kind of diseases. Many scientists disproved this theory of spontaneous generation by showing that under sterile conditions new cells can not be formed until and unless a parent cell is already present. But it was Virchow's work which got largely recognized.

the correct (answer)

is. (A.) All cells come from preexisting cells.

...hope this helps

The amount of light greatly affects how plants grow through photosynthesis. Insufficient or excessive light can have negative effects on plant growth. Different plants have different light requirements.

In biology, the amount of light greatly affects how plants grow through the process of photosynthesis. Photosynthesis is the process by which plants convert light energy into chemical energy, in the form of glucose, which is used for growth and development. Light provides the energy needed for this process to occur. Plants need a certain amount of light to thrive and grow properly.

For example, insufficient light can lead to weak, spindly stems and pale, small leaves, while excessive light can cause leaf burn and other damage. Plants have different light requirements depending on the species. Some plants, like cacti, can survive and grow in low light conditions, while others, like sunflowers, require full sun to thrive. Understanding a plant's light needs is important for successful cultivation.

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Fungal hyphae's primary function is to absorb nutrients through a high surface area-to-volume ratio and the release of enzymes that break down complex molecules into absorbable forms.

The main function of a fungus's hyphae is the absorption of nutrients from the environment. These thread-like structures maximize the fungus's surface area compared to its volume, enhancing its ability to absorb nutrients efficiently. The high surface area-to-volume ratios of hyphae allow for maximum exposure to the nutrient source, and the secretion of hydrolytic enzymes like cellulase aids in breaking down complex organic molecules into simpler forms that the fungi can absorb. These enzymes dismantle components such as the polysaccharide cellulose found in plant cell walls. Some fungi also develop specialized structures for absorbing nutrients directly from living hosts, but the overarching role of hyphae is to facilitate nutrient uptake.