Answer:
It is important that meiosis produces a haploid cell because it prevents the number of chromosomes from doubling each generation. If mitosis were used to produce gametes the subsequent generations would be diploid so in the next generations the normal amount of chromosomes would double meaning each subsequent generation would double the number chromosomes again and again.
Explanation:
Meiosis
- the process by which the number of chromosomes is halved during the formation of gametes.
- In human cells, for example, 46 chromosomes are arranged in 23 pairs. Therefore, human cells are diploid i.e. they have two sets of 23 chromosomes per set. During generative reproduction, the sex cells of the parent organism unite with one another and form a fertilized egg. In this situation, each sex cell is gamete. Gametes from haploid human cells, from Greek haplos, which means "single." This term implies that each gamete contains a set of 23 chromosomes in humans. When human gametes unite with each other, the original diploid condition of 46 chromosomes is rebuilt. Meaning cells containing a diploid number of chromosomes are converted into four cells, each of which has a number of haploid chromosomes. In human cells, for example, reproductive cells containing 46 chromosomes produce four cells, each with 23 chromosomes.
Mitosis
- the phase of the cell cycle where the nucleus of a cell is divided into two nuclei with an equal amount of genetic material in both the daughter nuclei. It succeeds the G2 phase and is succeeded by cytoplasmic division after the separation of the nucleus. Mitosis is essential for the growth of the cells and the replacement of worn-out cells. Abnormalities during mitosis may alter the DNA, resulting in genetic disorders.
-In each cycle of cell division, two daughter cells are formed from the parent cell. The cell is also known as equational cell division because the chromosome number in the parent cell and daughter cell is the same.
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Meiosis' production of haploid cells is crucial because it stops the chromosome count from doubling every generation.
What is meiosis?Meiosis is a reductional division. The number of chromosomes would double in the following generations if mitosis were utilized to make gametes, making the subsequent generations diploid and doubling the number of chromosomes in each successive generation.
Meiosis is the process by which the number of chromosomes is cut in half as gametes are developing.
For instance, there are 23 pairs of 46 chromosomes in human cells. Human cells therefore have two sets of 23 chromosomes each, making them diploid.
Therefore, Meiosis' production of haploid cells is crucial because it stops the chromosome count from doubling every generation.
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I need help for the 9th one pleaseeee
Answer:
23) Centrioles
24) Microtubules
25) Cell D
26) D,A,F,C,E,B
Explanation:
A woman has two recessive alleles. What is her phenotype? (1 point)
Answer:
XX
Explanation:
A women's phenotype will always stay the same as XX.
Cuáles son los factores físicos que intervienen en los cambios de estado
Answer:
Need ko lng Points sry
Explanation:
Which type of waves has a disturbance which travels the same direction as the wave?
A) longitudinal waves
B) secondary waves
C) transverse waves
D) surface waves
Which statement about photosynthesis and cellular respiration is true? (
a) Photosynthesis releases oxygen and respiration uses it
b) Both respiration and photosynthesis use oxygen from the atmosp
O c) Photosynthesis uses oxygen and respiration releases it.
d) Respiration uses water and photosynthesis releases it
Answer:
A
Explanation:
Photosynthesis releases oxygen coz photosynthesis needs carbon dioxide
identify the independent and dependent variable for the following statement :
Which grade of middle school students (6th, 7th or 8th grade) can shout the loudest
Answer:
IV: Student grade level (6th, 7th, 8th)
DV: "Loudness" (Operationalizing this variable would be beneficial, or in other words, define a way to measure it)
Explanation:
What happens to an organism when MORE food is available?
Answer:
Explanation:
When there is an abundance of food, the consumers will have less competitio, hence, they will be able to reproduce more. Eventually the food will become less abundan, unless another force interferes with the food chain.
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Gving brainliest!!!!!
Answer:
A) cilia
Explanation:
cilia is like the little tail that you see on bacteria
Suppose that meiosis occurred in the mother and father whose chromosomes you labeled in question 1. During meiosis,
crossing over occurred and resulted in the haploid cells shown in this model.
Four random genetic matches then formed the following diploid offspring. label the
alleles on each offspring.
Explanation:
you will end up with 24 chromosomes instead of the standard 23 and have down syndrome
read the box first and then answer the 2 guide question.
explain your answer.
Explanation:
1. The exact component of vape fluid had not been idenified as of that time, but illness seem to affects users of both nicotine and cannabis e-cigarettes.
Nicotine is very addictive, and that seems to be a case for concern. Low doses may cause nausea, vomiting, abdominal pain, and eye irritation. High doses of nicotine may cause tachycardia, high blood pressure, seizures, coma,and death
its known for harm nearly organ of the body
2. In today's generation,
Electric cigarettes or "vape" became popular as people were searching for an alternative to cigarette(tobacco) .
Describe the movement of the tectonic plates in model A. What is this situation called?
Salah satu bentuk tindakan penghematan listrik dapat dilakukan dengan ..
a. mematikan semua peralatan listrik
b. tidak menggunakan alat elektronik
c. tidak menonton televisi
d. memakai lampu hemat listrik
Monterey Bay, on the California coast, contains a diverse and complex ecological community. A variety of seaweeds and single-celled algae make up the base of the food web. Many animals, such as sea urchins, abalone, snails, and crabs, graze on these photosynthetic organisms. Otters and small fish eat all of these primary consumers and in turn are eaten by orcas and sharks. Orcas eat many other smaller organisms, including dolphins, sea lions, harbor seals, and many kinds of fish. Sea stars prey on sea urchins, abalone, and snails, whereas octopus eat crabs, fish, and sea stars. Sea lions and harbor seals eat predominantly fish. Sea cucumbers eat dead organic matter that falls to the sea floor. Place each of the organisms in the trophic pyramid based on where it gets its energy. Each organism will be used only once even if some of the organisms consume organisms from several trophic levels. Place organisms that eat from several trophic levels at the highest possible trophic level. For instance, a shark that eats sea lions, octopus, otters, and fish would be placed at the highest trophic level on the pyramid, even though the shark eats both secondary and tertiary consumers. You are currently in a labeling module. Turn off browse mode or quick nav, Tab to items, Space or Enter to pick up, Tab to move, Space or Enter to drop.The illustration has a trophic pyramid that contains a producer level labeled trophic level one, a primary consumer level labeled trophic level two, a secondary consumer level labeled trophic level three, a tertiary consumer level labeled trophic level four, a quaternary consumer level labeled trophic level five, and a section for decomposers and detritivores. Answer Bank
The trophic web is the transference of energy through different trophic levels. TL1) algae, seaweed /TL2) urchins, abalone, snails, crabs / TL3) sea-stars, otter, fish /TL4) octopus, sea lions /TL5) orca / Detritivore) cucumbers.
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The trophic web is a relationship process between different organisms, through which occurs transference of energy.
The ones placed at lower levels pass energy to the ones at the higher levels.
Organisms at each level feed on the preceding one and become food for the next one.
• The first link corresponds to a producer organism -autotroph-.
• The following links are the consumers -heterotrophs-: herbivores and carnivores.
• The last links are the decomposers that degrade organic matter from dead organisms.
As it is a web, all organisms are equilibrated until a change occurs.
When the change affects any of the involved links, there can be a cascade effect on the web.
A change in a link population size (increasing or decreasing) will affect the superior links and the immediately anterior link.
Trophic pyramid:
The trophic web can be represented as a pyramid.
The base of the pyramid is always composed of producers, followed by primary consumers, secondary, tertiary, and so on.
Outside the pyramid and closing the cycle, we can find decomposers and detritivorous.
Now, to complete the trophic pyramid, let us analyse information provided by the statement.
We will see who feeds on who.
seaweeds and single-celled algae ⇒ photosynthetic organismssea urchins, abalone, snails, and crabs ⇒ feed on photosynthetic organismsSea stars ⇒ prey on urchins, abalone, snailsOctopus ⇒ eat crabs, fish, and sea stars Otters and small fish ⇒ eat urchins, abalone, snails, and crabs Sea lions and harbor seals ⇒ feed on fishesOrcas and sharks ⇒ feed on otters, fishes, dolphins, sea lions, sealsSea cucumbers ⇒ eat dead organic matterThe options to complete the pyramid are snail, abalone, orca, otter, single-celled algae, urchin, small fishes, seaweed, crabs, sea lion, cucumber, octopus, and sea-star.
According to the analysis we did before about who feeds on who, we will complete the pyramid.
Producers TL1 ⇒ seaweeds and single-celled algaePrimary consumers TL2 ⇒ sea urchins, abalone, snails, and crabsSecondary consumer TL3 ⇒ Sea-stars, Otters and small fishTertiary consumer TL4 ⇒ Octopus, Sea lionsQuaternary consumer TL5 ⇒ OrcaDecomposer/Detritivore ⇒ Sea cucumbers-------------------------------------------------------------
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In general which of the following are largely responsible for moving substances across the plasma membrane communicating with other cells and identifying the cell
Answer:
protein. In general, which of the following is largely responsible for moving substances across the plasma membrane, communicating with other cells, and identifying the cell? Diffusion occurs because of random molecular movement.
Explanation:
3. Linnaeus and other early scientists classified organisms based on visible traits. Today, scientists generally use
cladograms based on DNA and other evolutionary evidence to classify organisms. Why have most scientists
changed their method of classification?
a. Cladograms are relatively small and the information in them is easy to manage.
b. Cladograms can compare more animals at one time than traditional classification methods.
C. DNA evidence supports the idea that species that look similar are always more closely related than species
that do not
d. DNA evidence often shows that species that s hare characteristics but look different can be more closely
related than species that look alike.
Does a eukoryotic cell have a cell membrane ?
How did Darwin's observations on the Galapagos Islands change his
preconceived views on nature and evolution?*
Answer: yes it did he figured that depending on which island the finches were on they would adapt to that island depending on resources for example on finch had a very large beak in order to crack nuts on the island because it was abundant on said island
Explanation:
Answer:His discoveries on the islands were important to the development of his Theory of Evolution by Natural Selection. On the island of galapagos, Charles Darwin discovered several species of finches. Thanks to his close observations, he discovered that the different species of finches varied from island to island
Explanation: this led to him knowing about natural selection
WILL GIVE BRAINLIEST AND 20 POINTS!
Calculate the molarity of 7.82 g of naphthalene (C10H8) in 85.2 mL of benzene solution.
what is ho2 help.....
Answer:
Ho2 is hydroperoxyl radical, or hydrogen superoxide.
h2o is water.
they arent the same thing.
ho2's formula: C18 H32 O3
Which of these mass movement events is considered a slide?
A) Slump
B) Creep
C) Rock fall
D) Rock avalanche
Answer:
A) Slump
Hope this helps :D
Which property of matter does the instrument measure?
Answer:
A triple beam balance measures mass.
A weigh scale measures weight.
A hydrometer measures density
A thermometer measures temperature
What is an amino acid?
Answer:
Amino acids are organic compounds that contain amino and carboxylate functional groups, along with a side chain specific to each amino acid.
Explanation:
Amino acids are small molecules that are the building blocks of proteins. Chemically, an amino acid is a molecule that has a carboxylic acid group and an amine group that are each attached to a carbon atom called the α carbon.
Label the brain parts please help me
hello! here's the answer have a nice day
Write a scientific explanation
of how the same process in all cells allows for different traits to be
expressed in different cells?
Answer:
Prokaryotic cells have entirely different structures for organizing their DNA, the prokaryotic chromosome equivalent is called a genophore and is localized within the nucleoid region... The structure of chromatin networks is currently poorly understood and remains an active area of research in molecular biology.
Explanation:
Dos características de la atmósfera y litosfera
Answer:
Además de contener nitrógeno y oxígeno, la atmósfera contiene pequeñas partículas, como polvo, ceniza volcánica, sal marina, suciedad y humo. La litosfera es la capa mecánica más externa, que se comporta como un sólido rígido y quebradizo.
Explain how cells all come from preexisting cells.
Answer: Cells don't just develop or exist out of thin air they must comefrom preexisting cells.
Explanation: As we all know from the popular cell theory cells come from pre-existing cells, but what does this mean? Scientists once thought that life spontaneously arose from nonliving things. Thanks to experimentation and the invention of the microscope, it is now known that life comes from preexisting life and that cells come from preexisting cells. Cells must divide or be reproduced by other cells. A cell can't be made any other way. At least to our current understanding that is that is why it is part of the cell theory not cell law.
Homework
Compare between energy yield in aerobic and anaerobic respiration. Support your answer with reference(s)
Answer:
aerobic respiration release large amount of energy while anaerobic respiration release small amount of energy
Explanation:
it is because aerobic respiration uses oxygen while anaerobic respiration does not use oxygen at all
The
organ system is responsible for eliminating nitrogenous waste from the body.
O Immune
O Muscular
O Urinary
O Digestive
Answer:
urinary
Explanation:
it sends out waste
Help I think it’s D or A
Which molecule is produced by the light-dependent reactions of photosynthesis?
A) water
B)NADPH
C) oxygen
D) carbon dioxide
Answer:
B.) NADPH
Explanation:
The light-dependent reactions use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier NADPH.
brainliest please. . .<3
Answer: NADPH
Explanation:
Please help
Which material(s) listed below is an example of a persistent organic pollutant?
(*select all that apply)
Select 4 correct answer(s)
Ricin
PCBs
DDT
Mercury
Arsenic
Answer:
ricin ddt mercury and arsenic
Explanation:
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