Mitosis is the process of cell division that produces two identical daughter cells and involves skin, epithelial, and blood cells, as well as cells involved in regeneration, such as those in starfish. It consists of four phases: prophase, metaphase, anaphase, and telophase followed by cytokinesis.
Four examples of cells that go through mitosis include:
Skin cells - Constantly regenerated to replace dead or damaged skin.Epithelial cells - These line the surfaces inside and outside of the body (like the gut) and are frequently renewed.Blood cells - Specifically red blood cells are replaced every four months, maintaining the necessary count in the bloodstream.Regeneration cells in organisms - For instance, starfish regenerate lost arms through the process of mitosis.Mitosis is a process that consists of four phases:
Prophase - Chromosomes condense and the nuclear envelope breaks down.Metaphase - Chromosomes line up along the metaphase plate in the center of the cell.Anaphase - Sister chromatids separate and move to opposite poles of the cell.Telophase and Cytokinesis - Chromosomes decondense, nuclear envelopes form around each set of chromosomes, and the cell divides its cytoplasm to form two daughter cells.The division of eukaryotic cells (cells with a nucleus and more than one chromosome) includes both mitosis and cytokinesis, resulting in the formation of two genetically identical daughter cells.
During the teen years, our self-esteem usually
stay the same
increase
decrease
increases, then decreases rapidly
What role do microtubules play during mitosis?
A. microtubules line up chromosomes at the equator of the cell during metaphase
B. microtubules play a role in the disassemble and reassembly of the nuclear membrane
C. microtubules play a role in the formation of the cell plate when plant cells undergo cell division
D. microtubules play a role in the migration of chromosomes to opposite ends of a dividing cell during anaphase
Answer:
Microtubules play a role in the migration of chromosomes to opposite ends of a dividing cell during anaphase. (Ans. D)
Explanation:
In mitosis after the metaphase stage, anaphase stage occurs where replicated chromosomes are divide and the copied chromosomes migrate to the opposite poles of the cell.
In anaphase stage two phases are occurs:
Anaphase A: In this phase chromosome moves to pole of a dividing cell, this movement is produced by the action occurs in kinetochores and a subclass present in microtubules present in kinetochores are known as kinetochore microtubules.
Anaphase B: In this phase separation of dividing cell poles from each other is occurred. This movement is produced by the action of inter-polar microtubules and astral microtubules.
What is the function of an antibody in an antigen-antibody response?
A.
to remove the DNA of the antigen
B.
to enclose the antigen in a protective shell
C.
to help immune cells identify and destroy a pathogen
D.
to ingest and digest the antigen
The hypothesis that continents have moved slowly to their current locations is called
When NADH passes its electrons into the Electron Transport System, NADH is chemically:
reduced
enzymized
hydrolysed
oxidized
Answer:
Option D, oxidized
Explanation:
The NADH gets oxidised when it passes its electrons into the Electron Transport System
Oxidization is a process in which one element or compound loses its electron to other chemical element or compound thereby itself getting oxidised and reducing the other one (the one who gains the electron).
Here in the electron transport system, the NADH loses or donates its electron to the Electron Transport System thus chemically it gets oxidized.
Hence, option D is correct
The two main processes by which plant cells absorb,release, and use energy are
Answer:
The answer are:
- Respiration.
- Photosynthesis.
Explanation:
Respiration allows plants to produce the necessary energy to perform their vital functions. Respiration of plants requires an exchange of gases between the plant and the environment, since when breathing, plants take oxygen from the environment and expel carbon dioxide (CO2) to the environment. Photosynthesis is a process that plants carry out to manufacture their own food from various elements that they find in their environment, such as sunlight, carbon dioxide and water, where inorganic materials become organic. This process serves for the development and growth of the plant.What would happen if our atmosphere consisted of pure oxygen?
what is the knee cap called
The knee cap is called Patella.
Explanation:The patella is a bone that is flat and circular-triangular in structure It is attached with the femur (thigh bone) and protects and covers the inner surface of the knee.A newly born human baby consist of a petella that is made up of soft cartilage, after attaning four year of age it changes to bone(patella) and develops into bone after 4 year of age.It protects anterior(inner) knee from direct impact.Result: knee cap is called Patella.
The name dinitrogen tetroxide tells you that this compound contains
What forms whenever a large body of air over land or water does not move for a long period of time?
Answer:
the answer is air masses i hope this helped :D
What are CD4+ cells?
A.
HIV treatment cells
B.
immune cells that are destroyed by HIV
C.
an experimental AIDS vaccine
D.
opportunistic cells that destroy the immune system
the prokaryotic cell cycle is different from the eukaryotic cell cycle because in the prokaryotic cell cycle
a. there is no growth phase
b.cell division does not involve division of the cell nucleus
c. DNA does not replicate
d. the cytoplasm and DNA are divided between two new cells.
The prokaryotic cell cycle is different from the eukaryotic cell cycle because in the prokaryotic cell cycle cell division does not involve the division of the cell nucleus.
What do you mean by Cell cycle?The cell cycle may be defined as the process a cell goes through each time it divides. The cell cycle consists of a series of steps during which the chromosomes and other cell material double to make two copies.
Prokaryotic cell lacks a nucleus and well-defined cell organelles. Due to the deficient nucleus, a prokaryotic cell never involves the nucleus in its division.
Therefore, the prokaryotic cell cycle is different from the eukaryotic cell cycle because in the prokaryotic cell cycle cell division does not involve the division of the cell nucleus.
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A------------ is each step in a food chain that demonstrates the transfer of energy.
A trophic level is each step in a food chain that demonstrates the transfer of energy.
A trophic level is any feeding level in a food chain through which energy in the form of food is transferred in an ecosystem. A food chain contains five main trophic levels which are; (i) primary producers (autotrophs; plants and algae), (ii) primary consumers (herbivores), (iii) Secondary consumers (carnivores and omnivores), (iv) Tertiary consumers (carnivores and omnivores) and (v) Apex predators.
A 'trophic level' refers to each step in a food chain, showcasing the energy transfer from one organism to another. The energy transfer starts with the Sun and travels through different organisms, from producers to consumers, providing an understanding of a food chain.
Explanation:In the field of Biology, each step in a food chain, demonstrating the transfer of energy from one organism to another, is referred to as a trophic level. This energy transfer begins with the Sun, which provides energy to producers like plants. Herbivores, or primary consumers, consume these plants and gain energy.
Then, carnivores, or secondary and tertiary consumers, eat these herbivores and other carnivores to get energy. The energy transfer continues through each trophic level, demonstrating the concept of a food chain.
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Which of the following best describes the fate of energy in ecosystems?
a. It will ultimately be recycled back into the ecosystem.
b. It flows from secondary consumers to primary consumers.
c. It enters most ecosystems in the form of sunlight.
d. It flows through and is used by ecosystems.
Answer:
d.
It flows through and is used by ecosystems.
Explanation:
Which plant cell organelle uses light energy to produce sugar?
A)
chloroplast
B)
mitochondria
C)
nucleus
D)
ribosome
Can you ZOOLEY??? Ive attached a file.
Yes, I can ZOOLEY.
What is ZOOLEY?ZOOLEY is a logic puzzle that involves figuring out which animals inhabit various areas of a zoo. The puzzle is presented as a map of the zoo, with the cages arranged in two rows, separated by an aisle or corridor. The animals live in cages, and their names are represented by a combination of letters and shapes.
To solve the puzzle, you need to use the clues given to you to figure out the names of the animals. For example, the clue "Which family is visiting the polar bears?" tells you that the family of people (Zuff) is visiting the polar bears (Trick).
Here are the answers to the ZOOLEY puzzle:
What family is visiting the polar bears? Zuff
What kind of family are they? Humans, they are outside the cages observing other animals.
Whose family is the largest? Kazoo
Which is the family of spiders? Lesger, spiders have 8 legs
Whose son has Mr Crocodile just swallowed? Breeze's son was swallowed. Thus, gobble are crocodiles and gender of each animal is designated by shape
Which swimming family has only 3 sons? Squeal. Note flipper and name similarity (ie. seal – squeal)
Which family has just 3 daughters? Lesger, spiders.
Is the polar bear's cub male or female? male.
Which family has no offspring? Slizz, there are only adults in the cage
Which is a family of snakes? Slizz, see lines similar to shape of snake
Which is a kangaroo? Swift, see pocket on side of female
What is the surname of the elephant's baby, which is soon to be born? Ample, see baby inside female, not a gobble because a male is inside a male.
How many sons has Mr. Giraffe? no sons. Noz are giraffes due to long legs
Which family has no father? Squeal
Which mother is away at the hospital? Noz, no female is in the cage
Who are the neighbours of the monkeys? Trick, they are polar bears. The monkeys are kazoo
A wee pelican has wandered into whose cage? Gobbles. this wee animal proves to be a pelican
Which is a family of pelicans? Beeze.
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The production of four haploid gametes from one mother cell is completed during
Answer:anaphase of meiosis I
Explanation:
Sam munches on some almonds. Identify the food group to which almonds belong.
fruits
milk products
meat and beans
vegetables
Correct answer choice is:
C. Meat and beans.
Explanation: The meat and beans food group comprise of meat, fish, chicken, nuts, seeds, eggs, and dried beans.
Quartz is a rock-forming mineral.
True
False
Trichodesmium is a nitrogen-fixing cyanobacteria. Why might this cyanobacteria be important to other organisms in nitrogen-poor waters?
They convert atmospheric nitrogen (N2) to organic compounds including ammonia (NH3).
They convert inorganic nitrogen to ammonia (NH3) in the ocean.
They convert organic nitrogen compounds to into other nitrogen compounds. They convert nitrates from the water into nitrogen gas (N2) that is released into the atmosphere.
Answer: They convert atmospheric nitrogen (N₂) to organic compounds including ammonia (NH₃).
Trichodesmium is cyanobacteria which converts atmospheric nitrogen into ammonia which is then used by other organisms present in the nitrogen poor water. They are found in the nutrient poor tropical and sub tropical ocean waters .They account for approximately half of the nitrogen fixation in marine system all over the world.
Final answer:
Trichodesmium is important to other organisms in nitrogen-poor waters because it converts atmospheric nitrogen into ammonia, providing an essential nutrient that supports marine life and maintains the nitrogen cycle in these regions.
Explanation:
Trichodesmium is a nitrogen-fixing cyanobacteria that plays a critical role in marine ecosystems, particularly in nitrogen-poor waters. As a diazotroph, this colonial cyanobacteria can convert atmospheric nitrogen (N₂), which is abundant but unusable by most organisms, into ammonia (NH₃), a form of nitrogen that is readily available for use by plants and phytoplankton. This process is crucial for supporting life in regions of the ocean where inorganic sources of nitrogen are scarce, as it helps maintain the nitrogen cycle and supports the base of the food web.
In nitrogen-poor waters, organisms depend on nitrogen fixers like Trichodesmium to contribute to the primary productivity of the ecosystem. The fixed nitrogen provided by Trichodesmium is essential for the synthesis of amino acids, nucleic acids, and other vital organic compounds within marine organisms. Therefore, without such diazotrophic cyanobacteria, many marine ecosystems would struggle to thrive due to the lack of accessible nitrogen.
Hence, the correct answer is they convert atmospheric nitrogen (N2) to organic compounds including ammonia (NH3).
The Calvin cycle happens in the ___________ of the chloroplast.
Which pair of molecules are broken down by the cell to release energy?
a
ADP and carbon dioxide
b
ADP and glucose
c
ATP and glucose
d
ATP and carbon dioxide
The pair of molecules that are broken down by the cell to release energy is known as ATP and glucose. Thus, the correct option for this question is C.
Which process is known for this mechanism?The process that is known for this liberation of energy by the breaking down of molecules of ATP and glucose is known as Cellular respiration.
Cellular respiration may be characterized as a type of chemical process through which oxygen is significantly utilized in order to make energy from carbohydrates such as glucose. Glucose and ATP are high-energy compounds that provide immediate energy to the cells in order to facilitate their metabolic functions.
Therefore, the pair of molecules that are broken down by the cell to release energy is known as ATP and glucose. Thus, the correct option for this question is C.
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_______________ is the difference in inherited traits an organism has from others of the same species
Answer:
The answer is Variations :)
Which organelle supplies the cell with energy?
a. ribosome
b. cytoplasm
c. nucleus
d. mitochondrion?
Answer: Mitochondria.
Explanation:
Mitochondria is a double membrane bound organelle found in the cytoplasm of the cell. The main function of mitochondria is to produce energy currency ATP (adenosine triphosphate) which is used by every cell of the body to perform metabolic activities.
The energy production takes place by the process known as cellular respiration in the presence of oxygen by the breakdown of glucose.
The mitochondrion is the part of the cell that supplies energy. It is often referred to as the 'powerhouse of the cell' as it turns glucose into ATP, the cell's energy-carrying molecule via cellular respiration.
Explanation:The organelle that supplies the cell with energy is the mitochondrion. Among your options, ribosome is responsible for the synthesis of proteins, the cytoplasm hosts various cell processes and the nucleus contains the cell's genetic material. However, it's the mitochondrion, often described as the powerhouse of the cell, that provides the energy. It does this by breaking down glucose into ATP (adenosine triphosphate) through a process called cellular respiration. ATP is the molecule that carries energy within cells and is vital for cell functions.
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Which of the following is NOT true about ATP?
glucose breaks down into ATP without any initial energy input. (It just spontaneously happens)
Energy is stored in the bonds of the phosphate group
cells make and use ATP
ferns, slime molds, dogs, and fish all use ATP for energy in the cells
which of the following is an organic molecule? A. LiF B. C3H8 C.SO2 D.H2O
Answer:
C3H8
Explanation:
What are the two major purposes for mitosis?
The large ground finch obtains food by cracking seeds. What is its short, strong beak an example of?
Final answer:
The large ground finch's short, strong beak is an adaptation resulting from natural selection and adaptive radiation, allowing it to crack hard seeds effectively.
Explanation:
The short, strong beak of the large ground finch Geospiza magnirostris is an example of adaptive radiation and natural selection. Through processes described by Charles Darwin, finches on the Galápagos Islands have adapted their beaks over generations to exploit different food sources effectively. For the large ground finch, its beak has evolved to crack open hard seeds, making it thicker and stronger compared to finches that eat other types of food, like insects or nectar.
Observations by researchers such as Peter and Rosemary Grant provide evidence for this evolutionary change. They reported that during a drought, finches with larger beaks could eat more types of seeds, and hence were more likely to survive. Their offspring also tended to have larger beaks, showing evolution by natural selection.
If an area has all the wolves that it can support, the wolf population has reached its ______?
If an area has all the wolves that it can support, the wolf population has reached its carrying capacity.
Carrying capacity refers to the maximum number of individuals that a population has in a given area.Carrying capacity depends on different types of limiting factors such as food availability.Limiting factors can be biotic (organisms) and abiotic (non-living part) factors.In conclusion, if an area has all the wolves that it can support, the wolf population has reached its carrying capacity.
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write a paragraph explaining the relationship between detritivores and decomposers in the ecosystem.