Biology Middle School
Answers
Answer 1
Answer:
Two haploid daughter cells
Explanation:
Meiosis is a type of cell division which is concerned mainly with the production of sex gametes( sperm and egg cells).
Meiosis I undergoes two rounds of division . It starts with one diploid parent cell and gives rise to two haploid daughter cells. The cells are 4 with the same amount of genetic material embedded in them due to their formation from the same source.
Answer 2
Answer:
haploid daughter cells
Explanation:
Meiosis involves two divisions of the parent cell resulting in four daughter cells. Each daughter cell has half the number of chromosomes as the parent cell. In meiosis I, the number of chromosomes is reduced by half thus called reduction division. The product of meiosis I is two diploid daughter cells.
Related Questions
The _______ biome has trees that lose leaves once each year. The _______ zone is where the ocean meets land.
There are different vegetative patterns throughout the world. The vegetation that can grow is influenced by the amount of heat received. The differences in heat give rise to _______ zones.
Monkeys, zebras, and tigers live in a/an _______ biome.
In the composition of water on earth, freshwater accounts for _______percent of the water on earth.
Respond to the following based on your reading.
What abiotic factors determine the type of terrestrial biome?
Why is the tropical rainforest the most diverse terrestrial biome?
Put the zones of freshwater lakes and ponds in order of most sunlight to least sunlight: profundal, littoral, limnetic.
Why do different biomes have different plant and animal species?
Answers
Answer:
deciduous forest
intertidal
climate
terrestrial
2.5
The abiotic factors that determine a terrestrial biome are weather, climate, latitude and amount of sunlight an area receives, and nutrients available.
The amount of precipitation and the warm climate in the tropical rainforest support more organisms in that area. There are fewer limiting factors in the tropical rainforest.
The order of most to least sunlight is littoral zone, limnetic zone, and profundal zone.
Biomes are different because of their differing latitude, climate, weather, amount of sunlight, and precipitation. All organisms have a range of tolerance for the temperature, amount of sunlight, and precipitation in which they can survive.
Explanation:.
Answer:
The temperate forest biome has deciduous trees that shed their leaves annually.
The region where ocean and land meet is called intertidal zone. The zone may be submerged or exposed depending on the rise and fall of tidal waves.
There are different vegetative patterns throughout the world. The vegetation that can grow is influenced by the amount of heat received. The differences in heat give rise to tropical zones.
Monkeys, zebras, and tigers live in a terrestrial/ savanna biome.
In the composition of water on earth, freshwater accounts for 2.5 percent of the water on earth.
Explanation:
Terrestrial biomes include variety of biomes like grassland, tundra, tropial rainforests etc. All these differences are based on a group of abiotic factors like amount of rainfall, sunlight, humidity, soil composition, availability of nutrients. groundwater, wind and temperature.
Tropical rain forests are said to be richest in terms of species. The reasons for it include high annual rainfall and high temperature. It seems a lot of species can thrive in this range of factors. There are a lot of different predators and prey which balance the ecology of the forest.
Fresh water ecosystem is classified into three types on the basis of availability of light:
1. Littoral: this zone is the closest to the shore and receives a large amount of sunlight.
2. Limnetic: This zone follows after littoral zone and its contains a large number of phytoplankton.
3. Profundal: This is the deepest and receives barely any light. the temperature here is very cold.
The diversity in the plant and animal species across the biomes is due to the variance in the environment and climate of the regions. Temperature, sunlight, rainfall and wind are major factors responsible for the survival of organisms. E.g Tigers are found in savannas as they can find lot of prey and hide in the grass. on the other hand, cactus are found in desert and have the ability to save water.
How are meiosis and mitosis different
Answers
Answer:
Meiosis produces four cells, but mitosis produces two cells.
Explanation:
Ap ex :)
Mitosis produces 2 diploid somatic cells that are genetically identical to each other and the original parent cells.. Meiosis produces 4 haploid gametes that are genetically unique from each other and the original parent cell
Two populations of frogs live separated by the Amazon River. What experiment could be designed to test whether the two population are one species or two?
Answers
Answer:
Organisms of the same species have the ability to mate and produce fertile offsprings.
If we want to check whether the two populations of frog belong to the same species then we can conduct an experiment in which we allow the organisms of the two populations to mate with each other. Id the organisms mate and produce fertile offsprings, this means that the two frogs belong to the same species.
Answer:
Sample Response: After the drought, there was very little water and many plants died, so the remaining environment was mostly brown. Because of this, having brown coloration was a favorable adaptation for frogs. The brown frogs are the ones that survived and reproduced, causing the number of brown frogs to increase. Having green coloration, on the other hand, was an unfavorable adaptation because they were unable to blend in with the surrounding environment. They became less likely to survive and reproduce, causing the number of green frogs to decrease.
Explanation:
20:05 Which source provides the energy that causes most waves to form?
currents
earthquakes
sunlight
wind
Type here to search
Answers
Sunlight is the main source of energy that causes most waves to form on earth.
Explanation:
The energy from the sun is ultimately the driver of most waves on the earth. The sun rays heat up the atmosphere and oceans deferentially at different latitudes due to the spherical nature of the earth. This creates differences in temperatures, densities, and pressure over areas hence resulting development of waves such as wind-generated ocean waves. The sun causes different pressure systems that feed prevailing winds. The prevailing winds, at the boundary between the oceans and atmosphere, cause waves due to the force of drag as the winds blow predominantly in one direction.
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Answer:
Wind
Explanation:
took the test on edge
What is codeine used for
Answers
Answer:
Codeine is primarily used as a painkiller
Explanation:
Codeine is an opiate which acts on the central nervous system to relieve pain (acts as an analgesic). It can also have sedative effects, and is thought to help stop excessive coughing
It is often prescribed for use in moderate pain. However, it is known to be addictive (it is a narcotic), and it is therefore only recommended to be used in short time frames, and not relied upon for long-term use. Codeine is quite tightly regulated in lots of countries.
How are organisms that reproduce asexually related
Answers
Answer:
Different from sexual reproduction, that need genetic material of two organisms, asexual reproduction happens when one organism can make an offspring without the genetic influence of another organism.
Explanation:
These offsprings are clones and they are identical to its parent. One organism that reproduces asexually can make an identical copy of itself. The organisms that reproduce asexually are procaryotes, some of the worms and sea stars.
6. After reading this data, what is a reasonable hypothesis? *1 point
Answers
Answer:
Data:"A set of measurements taken by the researcher or the person who is carrying the project is called as Data." It can be relating different measurements taken on small scale or on a larger scale.
Reasonable Hypotheses: "It is a theoretical explanation for an idea or any event relating any field of science or arts. As the hypothesis is presented on the base of a limited set of data or evidences."
Since, there was no point mentioned. So, i hope it helps.
In both fission and fusion, what is converted into energy?
Answers
In both fission and fusion, MASS is converted into energy
Explanation:
In fission, heavier atoms are split into lighter atoms with the release of high energy radiation (mostly neutrons). With fission, heavier atoms are formed from lighter atoms, again with the release of high energy radiation mostly neutrons.
In both cases, unlike in chemical reaction where mass is conserved (reactants and product weight the same), in radioactive reactions, the mass of the reactants and products is not the same since some of the mass is converted to energy. In the process there will be a loss of gain of atomic particles hence atomic mass too. It observes the Einstein theory of E=mc² where mass and energy are inversely proportional.
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1. A biochemist extracts DNA from many different organisms for comparative analysis. Which of the following results is he likely to obtain? Select all that apply. A. A + T = G + C
B. A + G = T + C
C. A = T and G = C
D. A = G and T = C
E. A = C and G = T
2. A primer is laid down complementary to the DNA sequence TAGCAATCGCA to prime synthesis of a daughter strand. What will the sequence of the primer be?
A. ATCGTTAGCGT
B. ATGGTTAGGGT
C. AUCGUUAGCGU
D. AUCGTUAGCGT
3. What is the correct sequence action of proteins during the process of DNA replication?
A. DNA polymerase, helicase, primase, ligase, SSB
B. helicase, SSB, primase, ligase, DNA polymerase
C. ligase, helicase, SSB, primase, DNA polymerase
D. helicase, SSB, primase, DNA polymerase, ligase
4. When Griffith incubated heat-killed virulent S strain bacteria with live avirulent R strains, he found that R cells were transformed into lethal, disease-causing bacteria. What is the molecule responsible for the transformation of R cells into the S type? Why did the transformation occur?
A. Proteins in the heat-killed S cell extract; they were able to synthesize the capsular polysaccharide in the R cells and make them virulent.
B. The capsular polysaccharide in the heat-killed S cell extract; the polysaccharide was able to attach to R cells, thus making them virulent.
C. DNA in the heat-killed S cell extract; the DNA altered the genetic makeup of R cells, allowing them to synthesize the polysaccharide capsule, thus making them virulent.
D. Specialized lipids in the cell membrane of the S cells were able to integrate with the R cells, conferring the ability to evade host immunity.
5. Cells that have deregulated expression of telomerase can become cancerous. This can be attributable to what?
A. Telomerase can directly induce mutations in essential genes that can result in cancer.
B. Telomerase allows cells to replicate indefinitely without end-shortening issues.
C. Telomerase interferes with the function of repair enzyme complexes at the ends of the chromosome, causing DNA damages to persist.
D. Telomerase inhibits regulators of the cell cycle leading to cancer.
Answers
The following are the answers:
C. A = T and G = C
A. ATCGTTAGCGT
D. helicase, SSB, primase, DNA polymerase, ligase
C. DNA in the heat-killed S cell extract; the DNA altered the genetic makeup of R cells, allowing them to synthesize the polysaccharide capsule, thus making them virulent.
B. Telomerase allows cells to replicate indefinitely without end-shortening issues.
What is DNA?
Deoxyribonucleic acid (DNA) is a long, double-stranded molecule that carries genetic information. It is made up of units called nucleotides, which are composed of a sugar (deoxyribose), a phosphate group, and a nitrogenous base. There are four types of nitrogenous bases in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T).
The sequence of these bases determines the genetic information that is stored in DNA. The structure of DNA is a double helix, which means that it is made up of two strands that are twisted around each other. The two strands are held together by hydrogen bonds between the nitrogenous bases, with adenine bonding with thymine and cytosine bonding with guanine.
Learn more about DNA, here:
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Answer:
1. B & C
2. C
3. D
4. C
5. B
Explanation:
Took the test
What is meant by overproduction by a population
Answers
Answer:
this means that there are too many people living in an area and are getting produced and so it creates a lift in the number of people or species living in that area creating an vast increase in a population.
Explanation:
this is because many people are reproducing causing a population increase.
Riding a bicycle requires balance and constant adjustment and monitoring by the rider in order to continue cycling. Successful riding a bicycle most directly results from the ability to: A) grow and develop
B) metabolize food for energy
C) sexually reproduce
D) detect and respond to change
Answers
Answer:D
Explanation:
when your riding a bicycle you need to be able to detect and respond to change. This helps you control the bike better.
The answers is d bc you have to respond to learning how to ride a bike
All of the following are heterotrophs except
Answers
Answer:
heterotrophs are animals that dont make their own foods
Explanation:
plants are autotrophs while animals are heterotrophs
Why is the term unique appropriate to describe unicellular organisms
Answers
Answer:
Unicellular organisms are composed of a single cell, unlike multicellular organisms that are made of many cells. This means that they each live and carry out all of their life processes as one single cell.
Explanation:
Unicellular organisms are composed of a single cell, unlike multicellular organisms that are made of many cells. This means that they each live and carry out all of their life processes as one single cell.
A what is a post where troops are housed
Answers
A military post I believe? If wrong correct me please
PSYCHOLOGY Robert was tested and his Wechsler Full Scale IQ was shown to be 65. He has difficulty in school and with reading but seems to do fine with everything else. Based on this information, he would be considered __________ mentally r3tarded. A. not B. mildly C. severely D. moderately (Im sorry my psych class is outdated I know no one uses this term anymore!)
Answers
Answer:
The correct option is mildly.
Explanation:
Answer:
B. Mild
Explanation:
PSYCHOLOGY Iris has been ahead of her classmates for as long as she has been in school. Lately, her classmates have started making fun of her for being a “t3acher’s p3t,” and they mock her whenever she raises her hand to answer a question. Iris is most likely being negatively stereotyped as being __________. A. mentally r3tarded B. normal C. intellectually disabled D. gifted (Im sorry my psych class is outdated I know no one uses this term anymore!)
Answers
Iris is most likely being negatively stereotyped as being gifted.
Option D
Explanation:
Many students who have proven to be gifted intellectually are likely to face struggle and negative feedback from their classmates. This is generally because they believe that the gifted student will get special treatment above the other student. Furthermore, it is evident that gifted students are likely to have different interests than their peers or much deeper knowledge of the common interest. They use terms which peers might not understand, barring them from having an effective conversation.
To maintain a balance in the class, teacher's are trained in a specific field in which they learn how to treat all the students equally, gifted or not. That helps reverse the negative stereotype or bring it down to a minimal level. As for students interacting with each other, several activities are put to place to encourage healthy interactions.
Answer: Answer is gifted
Explanation: D :)
The basic unit of life is a(n)
atom
compound
molecule
cell
Answers
Answer:
cell
Explanation:
It is the smallest unit of life that can replicate independently. It's the basic structural, functional, and biological unit of all known living organisms. The study of this is called cell biology.
Evolution is a A. theory because it is an explanation that is supported by extensive observations, experimentation, and reasoning.
B. prediction because it makes an educated guess about events that will occur in the future.
C. variable because it is a factor that can be changed during experimentation.
D. law because it has been proven without exception under certain stated conditions.
The answer is A, since no one responded I chose this answer! I do not need any responses....
Answers
Answer:
A. theory because it is an explanation that is supported by extensive observations, experimentation, and reasoning.
Explanation:
STUDY ISLAND
Which statement best describes science
Answers
The question is incomplete, the complete question is:
Which statement best describes science?a.Science is a large body of factual knowledgeb.Science is the process of discoveryc.Science is the quest for ultimate truth
Answer:
Science is the process of discovery
Explanation:
When we do science, our aim is to discover the truth about the universe, the pattern of events and how to manipulate nature to man's advantage.
Science is largely a voyage of discovery into the universe. It is a process of seeking for knowledge about the reason for being of things and solution to mankind's many problems.
Answer: Science is a collection of knowledge about the natural world, but it is also the process of discovering how the natural world works.
Explanation:
When organisms reproduce, they pass on
Answers
Answer:
their DNA
Explanation:
organisms pass on genes, portions of their DNA, to their offspring
FAQs
What Is Product Of Meiosis 1? ›
Meiosis one results in 2 haploid cells (duplicated), meanwhile meiosis two results in 4 haploid cells that are not doubled.
What is the product of meiosis 1 quizlet? ›Meiosis 1 results in 2 haploid daughter cells with half the number of chromosomes as the original cell.
What are the products of meiosis 2? ›Meiosis II resembles a mitotic division, except that the chromosome number has been reduced by half. Thus, the products of meiosis II are four haploid cells that contain a single copy of each chromosome.
What is the end result of meiosis 1? ›Two haploid cells are the end result of the first meiotic division. The cells are haploid because at each pole, there is just one of each pair of the homologous chromosomes.
What is the product of mitosis 1? ›The result of mitosis is two identical daughter cells, genetically identical to the original cell, all having 2N chromosomes.
What is the product of meiosis 2 quizlet? ›What is the end result of Meiosis II? The result are four haploid cells that have genetic variation. Chromosomes become visible as threads of chromatin network shorten and thicken ( condense).
What is the result of meiosis 2? ›During meiosis II, the sister chromatids within the two daughter cells separate, forming four new haploid gametes.
What is meiosis 1 and meiosis 2? ›There are two divisions in meiosis; the first division is meiosis I: the number of cells is doubled but the number of chromosomes is not. This results in 1/2 as many chromosomes per cell. The second division is meiosis II: this division is like mitosis; the number of chromosomes does not get reduced.
What is meiosis 1 quizlet? ›Meiosis 1. starts with a diploid cell, separates homologous chromosomes, and produces 2 haploid cells. Meiosis 2. separates sister chromatid, each cell produced in meiosis 1 is divided into 2, so produces 4 haploid cells which will then mature to sperm or egg cells.
What happens first in meiosis 1? ›Prophase I is the first step in meiosis I. During prophase I, the chromatin condenses, centrosomes move to opposite poles, and a spindle apparatus forms as in mitosis.
Are the products of meiosis 1 identical? ›
Each daughter cell has half the number of chromosomes as compared to their parents (one copy of each chromosome). The resulting cells from meiosis are not genetically identical because of the recombination of genes that occurred during prophase 1.
Is mitosis meiosis 1? ›Meiosis I is a type of cell division unique to germ cells, while meiosis II is similar to mitosis. Meiosis I, the first meiotic division, begins with prophase I. During prophase I, the complex of DNA and protein known as chromatin condenses to form chromosomes.
What is mitosis 1 vs meiosis 1? ›Mitosis results in two nuclei that are identical to the original nucleus. Meiosis, on the other hand, results in four nuclei, each having half the number of chromosomes of the original cell. In animals, meiosis only occurs in the cells that give rise to the sex cells (gametes), i.e., the egg and the sperm.
What is the product of meiosis called? ›Meiosis produces haploid gametes (ova or sperm) that contain one set of 23 chromosomes. When two gametes (an egg and a sperm) fuse, the resulting zygote is once again diploid, with the mother and father each contributing 23 chromosomes.
What is the end product of mitosis two? ›Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells.
How are the products of meiosis I and meiosis II different? ›In meiosis I, homologous chromosomes separate, while in meiosis II, sister chromatids separate. Meiosis II produces 4 haploid daughter cells, whereas Meiosis I produces 2 diploid daughter cells.
What is the role of meiosis 1? ›Meiosis I is the initial round of cell division, during which homologous pairs are separated. The pairing of homologous chromosomes, crossing over, and genetic recombination that occurs during Meiosis I results in two daughter cells with half the number of chromosomes.
What are the stages of meiosis 1? ›In each round of division, cells go through four stages: prophase, metaphase, anaphase, and telophase.
What happens in stage 3 of meiosis? ›3. Metaphase I: The chromosome pairs line up next to each other along the centre (equator) of the cell. The centrioles are now at opposites poles of the cell with the meiotic spindles extending from them.
What is meiosis II? ›Meiosis II is the second division in meiosis in which chromatids of each chromosome are segregated equally into daughter cells. No DNA replication occurs during the interphase which precedes meiosis II. Prophase II is the first step in meiosis II.
Are the products of meiosis 1 gametes? ›
The end products of meiosis are gametes, which are cells with half the chromosome amount of normal cells.
Is meiosis 1 haploid or diploid? ›During meiosis I, the cell is diploid because the homologous chromosomes are still located within the same cell membrane. Only after the first cytokinesis, when the daughter cells of meiosis I are fully separated, are the cells considered haploid.
What are the products of meiosis 1 in oogenesis? ›At the end of meiosis, four haploid cells have been produced, but the cells are not yet gametes. The development of haploid cells into gametes is called gametogenesis. Spermatogenesis produces four haploid sperm cells, while oogenesis produces one mature ovum.
What is meiosis 1 called? ›Meiosis I is called a reductional division, because it reduces the number of chromosomes inherited by each of the daughter cells.
What is meiosis 1 simple? ›Definition. The first of the two consecutive divisions of the nucleus of eukaryotic cell during meiosis, and composed of the following stages: prophase I, metaphase I, anaphase I, and telophase I. Supplement. Meiosis is a specialized form of cell division that ultimately gives rise to non-identical sex cells.
What is true about meiosis 1? ›So, the correct answer is 'Meiosis produces gametes that contain one complete haploid set of chromosomes'
What is the product of meiosis 1 in Gametogenesis? ›At the end of the first meiotic division, a haploid cell is produced called a secondary spermatocyte. This haploid cell must go through another meiotic cell division. The cell produced at the end of meiosis is called a spermatid.
Are the products of meiosis 1 diploid? ›However, Meiosis I begins with one diploid parent cell and ends with two haploid daughter cells, halving the number of chromosomes in each cell.
How does meiosis 1 produce haploid cells? ›The parent cell undergoes one round of DNA replication followed by two separate cycles of nuclear division. The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cell.
What cells are produced after meiosis 1? ›Meiosis is the process by which replicated chromosomes undergo two nuclear divisions to produce four haploid cells, also called meiocytes (sperms and eggs).
What is the product of meiosis 1 in spermatogenesis? ›
Each primary spermatocyte undergoes the first meiotic division to yield a pair of secondary spermatocytes, which complete the second division of meiosis. The haploid cells thus formed are called spermatids, and they are still connected to one another through their cytoplasmic bridges.
What are the products of meiosis gametes? ›Meiosis produces haploid gametes (ova or sperm) that contain one set of 23 chromosomes. When two gametes (an egg and a sperm) fuse, the resulting zygote is once again diploid, with the mother and father each contributing 23 chromosomes.