Answer:
A
Explanation:
Meiosis occurs in two phases. Meiosis I is the reductive phase, while meiosis II is non-reductive. The point at which the cells first become haploid is at the end of meiosis I, after homologous chromosomes separate.
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Through Meiosis, a diploid cell (2n) produces four haploid daughter cells (n).
After DNA replication there are two meiotic phases.
The first one is a reductive phase, in which homologous chromosomes separate. In the second phase, the cell suffers a new, not reductive division.1. In the first phase, Meiosis I:
Prophase I: Chromosomes condensate and become visible. Occurs crossing-over between homologous chromosomes. Crossin-over makes the daughter cells to be genetically different from the original one. Metaphase I: Homologous chromosomes randomly align in the equatorial plane. Anaphase I: In this phase occurs the division and independent separation of homologous pairs. Each chromosome migrates to different poles. This separation generates different chromosomal combinations in the daughter cells.Telophase I: Chromosomes of homologous pairs are already in the corresponding poles, and the nuclear membrane forms again in each pole.
Cytokinesis occurs
2. In the second phase, Meiosis II:
Prophase II: Chromosomes condensate again and become visible. Metaphase II: Chromosomes join the spindle apparatus and migrate to the equatorial plane, where they randomly line up. Sister chromatids are holden together until they reach the Anaphase. Anaphase II: Centromeres divide, chromatids get separated, and each of them goes forward an opposite cellular pole. Telophase II: Once in the poles, the chromosomes become lax again, and the nuclear membrane forms again.Cytokinesis occurs.
To answer this question, focus your attention on Meiosis I. During the anaphase homologous chromosomes separate. After this point, the nuclear membrane forms in the telophase, followed by cytokinesis. The result is two haploid cells.
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A sieve is a container with a mesh or perforated bottom. What is the most common use for a sieve? A. to steam cook chemicals in the lab B. to store liquid substances C. to allow gases to escape from reactions D. to filter larger particles out of a mixture
Answer: D
Explanation: Sieves are used to separate the solid smaller particles from a mixture. They are usually made of metal or fine plastic mesh, with openings between the wires that are sized according to the sizes of the desired particles in the mixture. Dried foods such as beans and rice are separated by using screens with openings of different sizes, small for whole grains, larger for cracked grains. Other kinds of products which require separation may be filtered through sieves, including sugar mixtures before they are packed or bottled.
From a plant cell leucoplast is removed. What will its effect be on the cell functioning?.
Answer:
Leucoplasts (λευκός leukós "white", πλαστός plastós "formed, molded") are a category of plastid and as such are organelles found in plant cells. They are non-pigmented, in contrast to other plastids such as the chloroplast.
Leucoplasts, specifically, amyloplasts
Lacking photosynthetic pigments, leucoplasts are not green and are located in non-photosynthetic tissues of plants, such as roots, bulbs and seeds. They may be specialized for bulk storage of starch, lipid or protein and are then known as amyloplasts, elaioplasts, or proteinoplasts (also called aleuroplasts) respectively. However, in many cell types, leucoplasts do not have a major storage function and are present to provide a wide range of essential biosynthetic functions, including the synthesis of fatty acids such as palmitic acid, many amino acids, and tetrapyrrole compounds such as heme. In general, leucoplasts are much smaller than chloroplasts and have a variable morphology, often described as amoeboid. Extensive networks of stromules interconnecting leucoplasts have been observed in epidermal cells of roots, hypocotyls, and petals, and in callus and suspension culture cells of tobacco. In some cell types at certain stages of development, leucoplasts are clustered around the nucleus with stromules extending to the cell periphery, as observed for proplastids in the root meristem.
Etioplasts, which are pre-granal, immature chloroplasts but can also be chloroplasts that have been deprived of light, lack active pigment and can be considered leucoplasts. After several minutes exposure to light, etioplasts begin to transform into functioning chloroplasts and cease being leucoplasts. Amyloplasts are of large size and store starch. Proteinoplasts store proteins and are found in seeds (pulses). Elaioplasts store fats and oils and are found in seeds. They are also called oleosomes.
Will give brainliet no file plz
Answer: Hey Hi Where is the question??
the right lung has ________ lobes, and the left lung has ________ lobes.
Answer:
3,2
Explanation:
the more energy that is present the slower the matter is able to move.
True or False
Answer: False.
Explanation:
Energy heats up molecules, making them move faster.
A cross in which only a single trait with two variations is considered is called a(n) cross or single factor cross.
Answer:
Monohybrid
Explanation:
what does the word gastropoda mean
Answer:
a large class of mollusks which includes snails, slugs, whelks, and all terrestrial kinds.
Explanation:
hope that helps :D!
How is genomics related to genes and DNA?
Answer:
A gene consists of enough DNA to code for one protein, and a genome is simply the sum total of an organism's DNA.
Genomic DNA, or gDNA, is the chromosomal DNA of an organism, representing the bulk of its genetic material. ... In research, genomic DNA is useful tools in applications such as PCR, library construction, Southern blotting, hybridizations, SNP analysis, and molecular diagnostic assays.
Answer:
DNA
DNA is the molecule that is the hereditary material in all living cells.
Genes are made of DNA, and so is the genome itself. A gene consists of enough DNA to code for one protein, and a genome is simply the sum total of an organism's DNA.
DNA is long and skinny, capable of contorting like a circus performer when it winds into chromosomes. It's skinny as a whip and smart as one too, containing all the information necessary to build a living organism. In a very real sense, DNA is information.
WHAT IS DNA MADE OF?
DNA is a very large molecule, made up of smaller units called nucleotides that are strung together in a row, making a DNA molecule thousands of times longer than it is wide.
Each nucleotide has three parts: a sugar molecule, a phosphate molecule, and a structure called a nitrogenous base. The nitrogenous base is the part of the nucleotide that carries genetic information, so the words "nucleotide" and "base" are often used interchangeably. The bases found in DNA come in four varieties: adenine, cytosine, guanine, and thymine—often abbreviated as A, C, G, and T, the letters of the genetic alphabet.
How did people find out that DNA is the hereditary material?
DNA was largely ignored for decades after a German chemist, Friedrich Miescher, first isolated the white, slightly acidic substance from the nucleus of cells in 1869. No one knew what DNA's function was—in fact, some doubted that it had a function at all—so they pretty much left the stuff alone.
Very few people thought that DNA could be the hereditary material. Early studies of DNA suggested, erroneously, that the molecule was made up of the same sequence of four bases repeated over and over—ACGTACGTACGT… for example. No one could imagine how such a monotonously simple molecule could contain the information necessary to build a living organism.
But during the 1930s and 1940s, new experiments began to suggest that DNA might, in fact, be important. It turned out that different strains of bacteria can exchange DNA and that when they do certain traits, such as the ability to cause disease in humans, can be passed from one strain of bacteria to another. Scientists also learned that when a virus infects a cell it injects its DNA into the cell, which then produces many copies of the virus, suggesting that DNA contains instructions for building viruses. And they found that different species of organisms have different proportions of bases in their DNA—one species might have DNA that is 30 percent A, 20 percent C, 20 percent G, and 30 percent T, while another might have 20 percent A, 30 percent C, 30 percent G, and 20 percent T. People began to think that genetic information might be written in the differences between the DNA bases of different species.
What does DNA look like?
A DNA molecule is a double helix, a structure that looks much like a ladder twisted into a spiral. The sides of the ladder are made of alternating sugar and phosphate molecules, the sugar of one nucleotide linked to the phosphate of the next. DNA is often said to have a sugar and phosphate "backbone."
Each rung of the ladder is made of two nitrogenous bases linked together in the middle. The length of a DNA molecule is often measured in "base pairs," or bp—that is, the number of rungs in the ladder. Sometimes, this unit of measurement is shortened simply to "bases."The structure of DNA was worked out in 1953 by James D. Watson and Francis Crick, who worked together in the Cavendish laboratory in Cambridge, England. By the time they began their work in the early 1950s, it was clear that DNA is the hereditary material, and scientists were racing to find out more about the long-ignored molecule, picking apart the implications of each new detail. Everyone knew they couldn't really understand how DNA works until they understood how its nucleotide building blocks are put together.
(Im a Really fast Typer and Thinker)
11. Describe the potential energy at each letter in the image to the
right:
W)
X)
Y)
Z)
Answer:
THE ANSWER IS Z
Explanation:
Y=X X 14 FUFFN C CCN. J.
Which of the following choices is a component in the habitat of a wetlands ecosystem?A. Moss
B. Bacteria
C. Water
D. Blue Heron
Answer: C.-Water
Explanation: Water is the main component when it comes to wetlands.
Habitat is the environmental place where organisms like plant and animal lives. Water is the habitat component present in the wetland ecosystem. Thus, option C is correct.
What is an ecosystem?An ecosystem is a biological community that lives together and has an interconnection with each other as well as their surroundings and other abiotic factors.
The ecosystem can be found in freshwater, marine, or terrestrial places. The wetland ecosystem is covered by water in all seasons and is seen in the form of swamps, marshes, etc.
The wetland is characterized by the presence of water that controls the erosion, water quality, abatement of the flood, etc.
Therefore, water is a component of the wetland ecosystem.
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label the diagram below of the root cross section
Plzzzzz help ASAP
The labeling of the root cell is as follow:
The outer red part is the Epidermis. The inner white part is the Cortex. The innermost pink part is the Xylem.Parts of a Root Epidermis - protects the tissues. Cortex - allows for transportation of materials. Xylem - allows for transportation of water.In conclusion, the root is quite complex and has various parts to allow it fulfil its functions in keeping the plant alive.
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What is the job of the enamel on your teeth?
Explanation:
Enamel helps protect your teeth from chewing, biting, grinding, crunching, and so on. Enamel also serves to sort of protect the teeth from potentially harmful temperatures and chemicals.
Semiconservative DNA replication means that
A. each daughter DNA molecule is composed of one original strand and one new strand.
B. the sequence of a DNA molecule is preserved as it is being replicated.
C. each strand of a double-stranded DNA molecule is replicated differently.
D. the cell can proofread its newly synthesized DNA only part of the time.
E. nucleotides are constantly being recycled as cells make DNA.
Semiconservative DNA replication means that each daughter DNA molecule is composed of one original strand and one new strand (Option A). It describes the mechanism of DNA replication.
In semiconservative DNA replication, both DNA strands separate and serve as templates to create new complementary DNA strands.
In consequence, each daughter cell has a molecule of DNA composed of an 'old' DNA template strand and a newly synthesized DNA strand.
The semi-conservative nature of DNA Replication was discovered by Meselson and Stahl.
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how to call repudiation
Answer:
can arise where a party indicates an intention to perform in connection with a contract but only in a manner substantially inconsistent with its obligations
When dissolved carbon dioxide (CO2) combines with ocean water it forms a(n)
Answer:
Carbon dioxide (CO2) dissolves in the ocean and reacts with water to form carbonic acid—which in turn generates bicarbonate, carbonate, and hydrogen ions. Calcium and carbonate ions combine to form the solid calcium carbonate crystals in their shells and skeletons.
Explanation:
stem cells that not form embryos are embryonic stem cells
Answer:
Fuels Data Center
Ethanol is a domestically produced alternative fuel most commonly made from corn. ... such as crop residues and wood—though this is not as common.
https://afdc.energy.gov › AFDC
Alternative Fuels and Advanced Vehicles
Ethanol. Ethanol is a widely used renewable fuel made from corn and other plant materials. It is blended with gasoline for use in vehicles.
People also ask
Which is a negative impact of the use of ethanol for energy?
What is the use of ethanol as an alternative fuel?தமிழில் தேடுங்கள்
எத்தனால் என்பது நமது கார்கள் மற்றும் டிரக்குகளை இயக்குவதற்கான மாற்று எரிபொருளுக்கு ஒரு எடுத்துக்காட்டு.
"hsjajajakqk structure and function?How are glucose and ethanol similar in structure and function?How are glucose and ethanol similar in structure and function?How are glucose and ethanol similar in structure and function?How are glucose and ethanol similar in structure and function?Ethanol fermentation, also called alcoholic fermentation, is a biological process which converts sugars such as glucose, fructose, and sucrose into cellular energy, producing ethanol and carbon dioxide as by-products.Ethanol fermentation, also called alcoholic fermentation, is a biological process which converts sugars such as glucose, fructose, and sucrose into cellular energy, producing ethanol and carbon dioxide as by-products.Ethanol fermentation, also called alcoholic fermentation, is a biological process which converts sugars such as glucose, fructose, and sucrose into cellular energy, producing ethanol and carbon dioxide as by-products.Ethanol fermentation, also called alcoholic fermentation, is a biological process which converts sugars such as glucose, fructose, and sucrose into cellular energy, producing ethanol and carbon dioxide as by-products.Ethanol is blended with gasoline at the fuel terminal to make E10, E15, or E85, ... Ethanol has the same chemical formula regardless of whether it is ...Ethanol is blended with gasoline at the fuel terminal to make E10, E15, or E85, ... Ethanol has the same chemical formula regardless of whether it is ...Ethanol is blended with gasoline at the fuel terminal to make E10, E15, or E85, ... Ethanol has the same chemical formula regardless of whether it is ...How are glucose and ethanol similar in structure and function? How do they differ?.How are glucose and ethanol similar in structure and function? How do they differ?.How are glucose and ethanol similar in structure and function? How do they differ?.How are glucose and ethanol similar in structure and function? How do they differ?.answer up thereanswer up thereanswer up thereanswer up thereanswer up thereanswer up thereanswer up thereanswer up thereanswer up thereanswer up thereLimiting factors fall into two broad categories: density-dependent factors and density-independent factors. ... Other density-independent factors include hurricanes, pollutants, and seasonal climate extremes. Density-dependent limiting factors tend to be biotic—having to do with living organisms.Limiting
One way that antibiotics can treat bacterial disease without harming human cells is by:
Which type of animal have thick skin and long Eyelashes?
Answer:
Camel
Explanation:
What are the missing coefficients for the skeleton equation below? N2+ H2-->
NH3
(A)3,1,2 (B)1,3,3 (C)1,3,2 (D)1,1,2 (E)2,6,6
which hormone increases acid secretion by the stomach?
Answer:
gastrin
Explanation:
During meal ingestion, the main hormone responsible for stimulating acid secretion is gastrin, which acts primarily by releasing histamine from enterochromaffin-like cells.
A three-paneled painting is called a __________. A. Diptych b. Triptych c. Polyptych.
Answer: B Triptych
Explanation: A three-paneled painting is called a Triptych.
Answer:
b.triptych
Explanation:
correct on ed
Does the waxy cutie affect where acertain pla y could be grown? Why?
Waxy skin - some leaves have a thick, waxy skin on their surface. This reduces water loss by transpiration . Water storage - some plants, known as succulents, store water in their stems, leaves, roots or even fruits.
The waxy covering on plant leaves, young stems, and fruit is called the "cuticle". ... The purpose of this covering is to help the plant retain water. In arid regions, that is very important. In wetter regions, the waxy coating may help prevent infection by disease organisms.
Plants that grow in arid zones of USDA zones 9 to 11 use waxy leaves to limit transpiration and retain water but also to protect leaves from the frigid temperatures sometimes found in the desert. Trees like the desert willow (Chilopsis linearis) have narrow, waxy leaves and striking purple flowers.
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14.
a) Find m
B
C
:
degrees
b) Find m∠CED:
degrees
c) Find m
C
E
D
:
degrees
d) Find m
C
D
E
:
degrees
I also have the same problem
SOMEONE PLEASE HELP
Which population would most likely be able to persist over many generations, despite having limited genetic variability
Answer:
A population in a relatively stable and static environment
Explanation:
Limitations of artificial classification
Members of the Native American Standing Rock Sioux tribe share history and bonds based on a common lineage of blood relatives. This form of relationship is also known as
Given what we know about the dynamics of distinct relationship types, we can confirm that the shared history and bonds based on a common lineage of blood relatives describe a relationship known as a kinship.
Kinship is the relationship being described in the question, it does not leave any room to further describe this word as its precise definition is that it is a bond based on common lineage and blood relationships.
The remaining options for the question have a common theme. These options are:
Household
Cohabitation
Village
What each of these have in common and the reason they do not describe the relationship being described in the question due to the fact that none of these options include a blood relation to the members involved. There are all situations of individuals living together, often with a common lineage, but do not specify a blood relationship.
This question was answered based on the complete question found online which states:
Members of the Native American Standing Rock Sioux tribe share history and bonds based on a common lineage of blood relatives. This form of relationship is also known as
a. cohabitation.
b. a household.
c. kinship.
d. a village.
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white blood cells that circulate in the bloodstream and are an important part of the body’s immune system are called ________.
Answer:
Lymphocytes
Explanation:
A lymphocyte is a type of white blood cell that is part of the immune system. There are two main types of lymphocytes: B cells and T cells. The B cells produce antibodies that are used to attack invading bacteria, viruses, and toxins. The T cells destroy the body's own cells that have themselves been taken over by viruses or become cancerous.
Item 7
How do chloroplasts support cellular functions?
A) They provide structure to the cell.
B) They synthesize, sort, and package proteins.
C) They convert glucose into usable energy.
D) They convert energy from the sun into glucose.
Answer:
D) They convert energy from the sun into glucose.
Explanation:
and that question i posted because i wanted to see what people thought about it, and to answer my question
Answer:
They convert energy from the sun into glucose
Explanation:
I took the quiz
Part 3
What type of front is front 1? What types of weather conditions take place there?
U
Font Sixes
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Submit
Answer:
Front 1 is a cold front.
Explanation:
At a cold front, cold air moves in, causing a drop in temperature.
19. Engineer It In some rivers and lakes, dams
are constructed to harvest energy by converting the
kinetic energy of moving water into electrical energy.
Water from behind the dam flows through a turbine
that transforms kinetic energy into mechanical
energy. The turbine turns a generator that converts
mechanical energy into electrical energy.
The water from behind the dam could flow to the
turbine either through an opening near the middle or
top of the dam or by flowing over the top of the dam.
Which type of water flow would be the best design for
sending a consistent flow of water past the turbines?
Explain your reasoning.
Answer:
A hydroelectric dam converts the potential energy stored in a water reservoir behind a dam to mechanical energy—mechanical energy is also known as kinetic energy. As the water flows down through the dam its kinetic energy is used to turn a turbine.
Explanation: