The 4 steps of mitosis are {{c1::prophase, metaphase, anaphase, and telophase}}
Answers
The 4 steps of mitosis, which include prophase, metaphase, anaphase, and telophase. Here's a brief overview of each step:
1. Prophase: During prophase, the chromosomes condense and become visible. The nuclear envelope dissolves, and the spindle fibers begin to form.
2. Metaphase: In metaphase, the chromosomes line up along the cell's equator, also known as the metaphase plate. Spindle fibers attach to the centromeres of the chromosomes.
3. Anaphase: During anaphase, the sister chromatids separate and are pulled apart to opposite ends of the cell by the spindle fibers.
4. Telophase: In the final stage, telophase, the chromosomes reach the opposite ends of the cell, and a new nuclear envelope forms around each set of chromosomes. The cell then divides into two daughter cells through a process called cytokinesis.
These steps ensure the accurate replication and distribution of genetic material during cell division.
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Related Questions
True or False. Cellulose is broken down in the human digestive system into glucose molecules.
Answers
Answer:
Complex carbohydrates contain longer chains of sugar molecules than simple carbohydrates. The body converts these sugar molecules into glucose, which it uses for energy. As complex carbohydrates have longer chains, they take longer to break down and provide more lasting energy in the body than simple carbohydrates.
Explanation:
Cellulose is a type of carbohydrate, which cannot be broken down by the human digestive system. Carbohydrates like glucose are the stored form of energy in humans.
The given statement is False.
Carbohydrates are biomolecules, which are made up of long chains of monomers or disaccharides.
The human digestive system break downs the complex carbohydrates into simpler forms, such as glucose. For example, the enzymes such as lactase and maltase break down the complex carbohydrates sucrose and lactose.
Cellulose is also a type of complex carbohydrate, which cannot be digested by the human digestive system. The human digestive system lacks the enzyme cellulase, which is responsible for the breakdown of cellulose.
Therefore, the given statement is False.
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7. (True Story) In Denmark, a husband and wife who had been unsuccessfully trying to have a
baby went to a fertility clinic. Sperm and eggs were collected from father and mother, and
combined in a petri dish, creating several "test-tube babies". These babies were implanted in the
mother and 9 months later she ſlelivered twins, one with lightly pigmented skin and one with
darkly pigmented skin. Because this seemed strange, a DNA test was conducted and it was
found that both children were related to the mother, but only the light skinned child was related to
the father. How can this be explained? (Hint, there was no infidelity)
Answers
Answer:a
a possible explanation for this occurrence is that a test tube or dropper was accidentally used repeatedly without being sterilized, causing sample cross-contamination. DNA in this test case did not confirm that the father of the second child was another client of the fertility clinic who had never met the mother...therefore this is a possibility.
Explanation:
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Convection currents which cause plate tectonics occur in the ______
O lithosphere
O crust
O outer core
O asthenosphere
Answers
Answer:
D
Explanation:
Asthenosphere
Answer:
asthenosphere
Explanation:
Ways by which nitrogen is lost
Answers
Answer:
There are mainly two processes through which nitrogen is lost.
1. denitrification
2. anaerobic ammonium oxidation (anammox).
However if you mean in the atmosphere,
Nitrogen losses include nitrates dissolved in surface runoff, soil erosion, organic nitrogen attached to wind and water- borne sediment; and ammonia and nitrogen oxides lost to the atmosphere.
Nitrogen can be lost from the environment through various processes. Such as Volatilization, Denitrification and Leaching.
Here are three ways by which nitrogen is lost from the environment:
1. Volatilization: Nitrogen compounds, such as ammonia (NH₃), can be converted into gas and released into the atmosphere in a process called volatilization.
This commonly occurs when nitrogen-based fertilizers are applied to agricultural fields. The ammonia can escape into the air, leading to the loss of nitrogen from the soil, reducing its availability for plant uptake.2. Denitrification: Denitrification is a microbial process where certain bacteria convert nitrates (NO₃⁻) found in soil or water into gaseous forms like nitrous oxide and nitrogen gas.
These gases then escape into the atmosphere, removing nitrogen from the terrestrial or aquatic ecosystems. Denitrification often occurs in oxygen-deprived or anaerobic environments, such as waterlogged soils.3. Leaching: When there's too much nitrogen in the soil as nitrates or ammonia, it can be carried away by rain or irrigation water, seeping deeper into the soil or entering water bodies.
This process is called leaching and can lead to nitrogen loss from the root zone, affecting plant growth.Thus, various mechanisms have the potential to remove nitrogen from the environment. such as leaching, denitrification, and volatilization.
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True or false Biodiversity has both economical and ecological value within an ecosystem.
Answers
Explanation:
biodiversity has both economic value and ecological value within an ecosystem. ... Human activities can also threaten biodiversity. These activities include habitat destruction, poaching, pollution, and the introduction of exotic species.
28 The pedigree below shows the inheritance pattern of a genetic disease caused by homozygous recessive lethal alleles. If the disease caused the death of individual II–2, then _[blank]_.
individual II-4 must be a carrier of the diseaseindividual II-4 must be a carrier of the disease , ,
individual II-1 must be a carrier of the diseaseindividual II-1 must be a carrier of the disease , ,
individual II-2 will pass it on to any offspring she hasindividual II-2 will pass it on to any offspring she has , ,
individuals I-1 and I-2 are carriers of the diseaseindividuals I-1 and I-2 are carriers of the disease , ,
Answers
Both I-1 nor I-2 are disease transmitters if the condition has resulted in the death of II-2.
What is a homozygous example?Both dominant (two alleles for brown eyes) and heterozygous individuals can have brown eyes (one for brown and one for blue). Contrary to the recessive blue eye gene, this one is dominant. To have blue eyes, you must possess two unique blue eye alleles.
Describe the homozygous trait.In terms of genetics, being homogeneous means having gotten the same alleles (versions) of a chromosomal marker from both bio mother. A person who carries two identical copies of either a DNA barcode is referred to as homozygous for such a marker.
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If the illness led to the demise of II-2, then neither I-1 nor I-2 are disease carriers.
What is an example of homozygosity?
Individuals with brown eyes might be heterozygous or dominant (have two alleles for them) (one for brown and one for blue). This gene, in contrast to the recessive blue eye gene, is dominant. You need two different blue eye alleles in order to have blue eyes.
Tell us about the homozygous characteristic.
Being homogenous in terms of genetics entails receiving the same alleles (versions) of a chromosomal marker from both biological mothers. A individual is said to be homozygous for a certain marker if they have two identical copies of either DNA barcode.
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The lipopolysaccharide found in the gram-negative cell wall
creates two major issues when bacteria with this type of cell wall
cause septicemia. Explain these two issues.
Answers
The lipopolysaccharide (LPS) found in the gram-negative cell wall is a component of the outer membrane of certain bacteria, including many species of gram-negative bacteria that can cause septicemia. When these bacteria enter the bloodstream and cause septicemia, or blood poisoning, the LPS can create several problems.
The first major issue with LPS in septicemia is its ability to trigger an intense and potentially life-threatening inflammatory response.
When LPS enters the bloodstream, it is recognized by the immune system as a foreign substance and triggers the activation of immune cells called inflammatory cytokines.
These cytokines recruit more immune cells to the site of infection, which can lead to the formation of inflammatory lesions and the release of harmful substances into the bloodstream. This can cause widespread tissue damage and organ failure, and can be life-threatening if not treated promptly.
The second major issue with LPS in septicemia is its ability to trigger the production of antibodies against the bacteria that produced it. When the immune system encounters LPS, it produces antibodies against it, which can help to neutralize it and protect against future infections with the same bacteria.
However, in some cases, the production of antibodies against LPS can be harmful, as it can cause the formation of immune complexes that can deposit in tissues and cause inflammation and damage. This can lead to a variety of complications, including kidney damage, neurological problems, and other serious health issues.
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what process releases oxygen into the atmosphere from plants?
Answers
Answer:
Photosynthesis is the process that releases oxygen into the atmosphere from plants as a by product
What composes the backbone, or side pieces, of the DNA molecule?
Answers
Answer:
A phosphate backbone is the portion of the DNA double helix that provides structural support to the molecule. DNA consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups.
what is the answer pls help me fast I need it now
Answers
exposure of purified phospholipids to water results in the spontaneous formation of:
Answers
Exposure of purified phospholipids to water results in the spontaneous formation of bilayer sheets.
Phospholipids are molecules that consist of two fatty acids, a glycerol molecule, a phosphate group, and a small polar molecule. Phospholipids are the main constituents of cell membranes, forming a lipid bilayer that shields the cell's contents from the external environment.
Exposure of purified phospholipids to water results in the spontaneous formation of bilayer sheets, which is the arrangement of phospholipids in cell membranes. The hydrophobic tails of the phospholipids face each other in the interior of the bilayer, while the hydrophilic heads face the exterior and interior of the cell membrane.
The phospholipid bilayer is essential for cell membrane integrity, providing a barrier that regulates the movement of substances in and out of the cell.
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Q . What will happen to colder ocean water?
1. It will freeze.
2. It will evaporate.
3. It will sink.
4. It will rise.
Answers
Answer:
Cold, salty water is dense and sinks to the bottom of the ocean while warm water is less dense and remains on the surface. ... Water gets colder with depth because cold, salty ocean water sinks to the bottom of the ocean basins below the less dense warmer water near the surface.
Explanation:
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by what time of life are all oogonia formed in females?
Answers
Answer:
the sixth to the eighth week of pregnancy with the female.
35. Cows host a variety of bacteria in their bodies. Many of these bacteria live in their digestive tracts and
help them digest the grasses they eat. In turn, the bacteria receive a place to live and a plentiful food
supply. What kind of relationship is this?
A) mutualism B) commensalism C) competition D) parasitism
Answers
A) mutualism
Explanation:
Both species cows and bacteria get benefits in this association.
In a certain species of insect, eye color is controlled by a single gene. The dominant allele (E) codes for black eyes, while the recessive allele (e) codes for red eyes.
How could two parents with black eyes have a red-eyed female offspring?
Answers
Two parents with black eyes can give rise to offspring with red eye (ee) which is a recessive trait only when both the parents are heterozygous (Ee) for the trait. This is showed in the cross on the given image.
Recessive condition in the genotype can only occur during homozygous state when both the alleles for the gene are recessive. Recessive alleles are the mutated version of the gene that are not able to produce any effect when present along with a dominant allele.
Heterozygous state of the genotype is when both the alleles for a given trait are different or contrasting. One of the alleles is able to show its effect while the other is not, in a heterozygous condition. Sometimes heterozygous trait can have a phenotype that is different from the dominant and recessive phenotype.
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The _____________ criminalized acts of cyberterrorism
Answers
The Patriot Act of 2001 criminalized acts of cyberterrorism. The USA PATRIOT Act, also known as the Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act, is a federal law enacted by the United States Congress in 2001 after the September 11 terrorist attacks on the United States.
The Patriot Act, which included provisions for surveillance, intelligence, and law enforcement powers, made it illegal to conduct acts of cyberterrorism. The term "cyberterrorism" refers to the use of computers and information technology to conduct terrorist acts. Acts of cyberterrorism might include cyberattacks on critical infrastructure, such as water and power systems, or the use of hacking to steal sensitive information. In 2001, the United States passed the USA PATRIOT Act in response to the terrorist attacks of September 11, which included provisions aimed at preventing acts of terrorism, including acts of cyberterrorism.
Section 814 of the Patriot Act, also known as the "Cyberterrorism Prevention Act of 2001," criminalized acts of cyberterrorism and made it illegal to engage in activities designed to damage or interfere with critical infrastructure or to commit other acts of terrorism using computers or the internet. The Patriot Act has been a controversial law, with critics arguing that it infringes on civil liberties and provides law enforcement agencies with too much power. Nonetheless, it remains a key piece of legislation in the fight against terrorism, including acts of cyberterrorism.
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Define Peripheral Nervous System.
Answers
Answer:
The peripheral nervous system is one of two components that make up the nervous system of bilateral animals, with the other part being the central nervous system.
Explanation:
ANATOMY
the nervous system outside the brain and spinal cord.
What features do we find in the cells of bacteria AND plants?
What features do we find in the cells of animals AND plants?
What features do we find in ALL cells (animals, plants, AND bacteria)?
Answers
Answer: There is always a nucleus
Mary likes sour foods, and she decided to eat a slice of lemon. As she bit down on the lemon, she felt an uncomfortable squeezing-type sensation in her cheek as one of her salivary glands emptied its secretions into her mouth. Which of the three pairs of salivary glands did she feel
Answers
She felt the parotid.
I'm 99% sure this is right lol
Although the exact number of genes in human DNA is unknown, scientists
estimate the number to be around 20,000 to 25,000.
Which of the following is true about these genes?
A.) There is only one variation, or allele, of each gene.
B .) There are several variations, or alleles, of many genes.
C.) Each human has the exact
D.) same combination of alleles.
Each human has completely different genes and alleles.
Answers
Answer:
B
Explanation:
There are several variations, or alleles, of many genes.
Select all answer choices that are
examples of PASSIVEtransport
Diffusion
Endocytosis
Facilitated Diffusion
Exocytosis
Active Transport
Answers
Answer:
Diffusion, Facilitated Diffusion
Explanation:
Diffusion is a form of passive transport of matter across the cell membrane. Diffusion is a transport substance from the middle with already in the middle with a lower concentration until the concentrations are equalized. The magnitude of the diffusion is proportional to the chemical gradient.
Facilitated diffusion, also called carrier-mediated diffusion, is the movement of molecules across the cell membrane via special transport proteins, which are incorporated into cell membranes.
Which cell structure is found in plant and animal cell and controls what can come into or leave a cell
Answers
Answer:
Cell Membrane
Explanation:
I couldn’t fit the whole question in so the last two options are
-Natural disasters are so rare that they have not affected human population very much
-Natural disasters are a concern for human, life and property, but there is nothing we can do to predict them or prepare for them
Thank you! Will mark brainliest
Answers
Answer:
how natural disasters are a concern for human, life and property
What process cause changes to occur on wet paper?
Answers
The paper get wet and it rips easily
Are those new double-pane windows better at keeping my house at the right temperature?
What is your Hypothesis, Independent Variable, Dependent Variable, and Controlled Variables(multiple)?
Answers
Austin and Marissa hypothesize that coneflower stomata use feedback loops to respond to moisture levels by opening when there is moisture present, and closing when there is no moisture present. Which BEST describes the setup they should use to support their hypothesis?
A
Austin and Marissa should observe the number of closed stomata on one leaf, mist the leaf with water, wait one hour, and count the total number of stomata.
B
Austin and Marissa should observe the number of stomata on one leaf, mist the leaf with water, wait one hour, and count the number of stomata that have grown.
C
Austin and Marissa should observe the number of open stomata on one leaf, mist the leaf with water, wait one hour, and count the number of open stomata again.
D
Austin and Marissa should observe the number of stomata on one leaf, mist the leaf with water, wait one hour, and count the number of stomata that have disappeared.
Answers
Austin and Marissa should observe the number of open stomata on one leaf, mist the leaf with water, wait one hour, and count the number of open stomata again.
In the epidermis of tree leaves and needles, there are cell structures called stomata that play a role in the exchange of water and carbon dioxide between plants and the atmosphere.
Stomata, the tiny pores on the outside of leaves and stalks, control how gases enter and exit leaves and therefore, how plants as a whole function. On all periods, ranging from minutes to millennia, they adjust to regional and global changes.
Guard cells are a pair of specialized epidermal cells that make up stomata. By adjusting the size of the stomatal pore, stomata govern water loss and the exchange of gases between the plant and its surroundings.
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Which phrases are true of only the mantle?
made of three layers
has a tarry layer
made of two layers
has a molten outer layer
has a solid outer layer
Answers
cholesterol composes approximately what percent of the plasma membrane?
Answers
Cholesterol composes approximately 25% of the plasma membrane.
What is the plasma membrane? The plasma membrane or cell membrane is the barrier between the inside of the cell and its surrounding environment. The cell membrane is made up of a phospholipid bilayer and has proteins and carbohydrates embedded in it. What is cholesterol? Cholesterol is a type of lipid that is present in animal cell membranes. Cholesterol is an important component of cell membranes because it regulates the fluidity of the membrane. The structure of cholesterol helps to keep the membrane fluid when the temperature changes. At high temperatures, cholesterol decreases the fluidity of the membrane, and at low temperatures, it increases the fluidity of the membrane. What is the percentage of cholesterol in the plasma membrane? Cholesterol makes up roughly 25% of the plasma membrane. The phospholipid bilayer makes up the majority of the membrane, with proteins and carbohydrates making up the rest.
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cuales son las principales funciones que cumplen las proteinas en nuestro cuerpo
Answers
The proteins are involved in every function inside the body. These include catalysis, transport, signaling, hormones, protection against pathogens, structural components and so forth.
Proteins are the biomolecules present inside the body. These are made by the monomers called amino acids which are the organic substances. The proteins are synthesized in the ribosome present in the cell's cytoplasm through the process called translation. The information of the synthesis of protein comes from the DNA.
Catalysis is the process of increasing the rate of chemical reaction inside the body. This process is accomplished by the help of enzymes which are the biological catalysts made from proteins. The enzymes do so by lowering down the activation energy of the chemical reactions.
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The given question in English language is:
What are the main functions that proteins fulfill in our body?
Distance is a scalar quantity. scalar are quantities with only magnitude or size. which of the following is not an example of scalar quantity? A. displacement B. length C. temperature D. time Science
Answers
Answer:
A)displacement
Explanation:
Scalar are quantities are ones that posses only magnitude or size, there is no direction. When describing them ,
single element of a number field could be used. This could be real number
Examples are temperature, speed and mass