Answer:
Age of rock = 21112000000 years
Explanation:
The half-life of a radioactive material is the time taken for half the original material to decay or it is the time required for a quantity to reduce to half of its initial value.
The ratio of parent isotope, Uranium-235 to daughter isotope, Lead-207 = 6 : 42 = 1 : 7
This means that for every one gram of the parent isotope, there are 7 grams of the daughter isotope. So,the quantity of radioactive material left is one out of eight its original value.
Number of half-lives undergone for 1/8 of the original value to to remain is given below:
1/8 = 1/2 × 1/2 × 1/2
Therefore, number of half-lives = 3 half-lives
Age of rock = half-life of Uranium -235 × number of half-lives
The half-life of Uranium-235 is 704 million years = 704000000
Age of rock = 704000000 × 3
Age of rock = 21112000000 years
Cell division allows multicellular organisms to grow.
Question 6 options:
True
False
The statement cell division allows multicellular organisms to grow is definitely true.
What do you mean by Cell division?Cell division may be defined as the process by which cells multiply involving both nuclear and cytoplasmic division.
Almost all multicellular organisms use the mechanism of cell division for growth and the proper maintenance and repair of cells as well as tissues.
Therefore, the statement cell division allows multicellular organisms to grow is definitely true.
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state any one way of controlling the spread of ringworms among children
Answer: Teach kids not to wear each other's hats, and make sure each family member uses their own comb and brush. Other basic hygiene practices, like not sharing razors, can help prevent the spread of ringworms
CREDIT: everydayhealth
!! This was taken from a website, make sure to give credit or else it will be plagiarism !!
Describe: How does a virus destroy the host cell’s DNA?
Answer:
it eats away at the host from the inside
Explanation:
which structure provides the main source of sensory input to the cerebral cortex?
The thalamus is the structure that provides the main source of sensory input to the cerebral cortex. The thalamus's structure provides a foundation for the different functions it performs. The various nuclei of the thalamus are grouped into three broad groups based on their functions: the anterior group, the medial group, and the lateral group.
The thalamus is a mass of gray matter situated in the brain's posterior part, between the midbrain and the cerebrum. The thalamus is a crucial part of the brain that controls and regulates a variety of bodily functions.The thalamus is a complex structure that plays an important role in transmitting sensory information. It acts as a relay station for sensory and motor information, processing and filtering all incoming sensory stimuli and then transmitting them to the relevant regions of the brain.The thalamus receives and processes sensory input from all of the body's sensory systems, including sight, hearing, touch, taste, and smell. The thalamus' main function is to filter and process sensory information before it is transmitted to the cerebral cortex. Therefore, the thalamus is the structure that provides the main source of sensory input to the cerebral cortex.Structure of the thalamus. The thalamus is divided into a variety of different nuclei that perform distinct functions. The thalamus's structure provides a foundation for the different functions it performs. The various nuclei of the thalamus are grouped into three broad groups based on their functions: the anterior group, the medial group, and the lateral group.
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Why does asexual reproduction produce offspring with less diversity and therefore LESS chance of adapting to its environment
Answer:
Sexual reproduction provides genetic diversity because the sperm and egg that are produced contain different combinations of genes than the parent organisms. Asexual reproduction, on the other hand, does not need sperm and eggs since one organism splits into two organisms that have the same combination of genes.
Explanation:
Explanation:
With asexual reproduction rather then there being two parents there is one. So the offspring is just a clone of the singular parent. This means there isn't a second set of genes or dna to mix into the child which would create changes and adaptions by inheritance. Though since there is one parent it is a clone of the first with nothing to inherit so it can't adapt as it only has the one set of genes instead of two.
Which part of the female reproductive system is highlighted below?
A. Fallopian tube
B. Ovary
C. Uterus
D. Cervix
Answer:
C. Uterus
Explanation:
Uterus is the female reproductive system.
What is Female reproductive system?The female reproductive system serves a number of purposes. It aids in sexual reproduction in addition to enabling sexual activity.
You make eggs using your ovaries. During ovulation, these eggs are subsequently moved to your fallopian tube where sperm fertilization may take place. The fertilized egg is then transferred to your uterus, where the lining of the uterus has expanded due to the typical hormones produced during your menstrual cycle, also known as your reproductive cycle.
The fertilized egg can implant into the thicker uterine lining once it's within your uterus and continue to grow there. Your menstrual period causes the uterine lining to shed if implantation doesn't occur.
Therefore, Uterus is the female reproductive system.
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Although animal nervous systems differ in complexity, their nerve cells are still remarkably similar. true false
Answer:
TRUE
Explanation:
The nervous system only exists in animals. Neurons are the nerve cells that compose the nervous system.
The neuron´s principal function is to catch stimuli from the exterior convert them into nerve impulses that get transported to the control centers. These control centers interpret the signal and send an answer to the stimuli.
The control centers in invertebrates are ganglia, while the vertebrate´s control centers are the spinal medulla and the encephalon.
The signal transport occurs from cell to cell in inferior animals and through nerves in superior animals.
There is a progressive increase in the complexity of the nervous system. It evolved from primitive animals to the most superior ones. This evolution is especially noticeable in the development of the encephalon as the control center.
However, the basic nerve cell is very similar in all animals.
describe how ingestion of very salty food may reduce the amount of water excreted in urine
Please no links to download thingies-Examine the data table, which shows data for quadrat #18.
Table
Compare the data you recorded in Table D of your Student Guide with Table D from quadrat #18 in the control group.
The average height of the sunflower sprouts in your quadrat is _______
the average height of the sunflower sprouts in quadrat #18.
Answer:
The answer to your question would be more than.
Explanation:
The average height of the sunflower sprouts in your quadrat is
greater than
the average
height of the sunflower sprouts in quadrat #18.
Brainliest? sorry it's late.
Answer:
greater or more than just did it
Explanation:
How many years might primary succession take with medium amounts of rainfall and temperature? Explain why HELPP PLEASE HELP
Answer:
The primary succession process can take hundreds of years to happen, even in medium amounts of rain and temperature.
Explanation:
The primary succession occurs when a community of plants begins to sprout in areas that have never been occupied by any type of living being. The primary succession occurs, for example, with the sprouting of vegetables in rocky outcrops. These plant species are known as primary species and although they are able to survive, these environments offer few resources for the development of living things. Generally, it takes hundreds and even thousands of years for primary succession to occur, even in environments with average temperature and precipitation.
Primary succession takes more than 100 years to occupy with medium amounts of rainfall and temperature.
What do you mean by Succession?Succession is the gradual and continuous replacement of one community by another community over a long period of time.
Primary succession is the succession that is starting for the very first time, where there is no life that existed before. It usually started from a bare area. Examples of primary succession include Igneous rock, Glaciers, etc.
It is associated with the occurrence of new sprouted life forms arising in a given area. This activity requires more than 100 years when there is a sufficient amount of rainfall and temperature is there.
Therefore, Primary succession takes more than 100 years to occupy with medium amounts of rainfall and temperature.
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Protists
Question 1
Give the correct biological term for each of the following:
1. Type of symmetry displayed by Amoeba.
2. Projections of the Amoebe used for locomotion
3. Protective layer found around Amoeba
4. Inner granular liquid medium of the cytoplasm.
5. Organelle that stores digestive enzymes.
6. Structure that stores food
7. Structure that plays an important role in osmoregulation
Answer:
1.Asymmetrical symmetry
2. Pseudopodia
3. Cyst
4. Endoplasm
5.Lysosomes
6.vacuole
7.Contractile vacuole complex (CVC)
When does the body make most of its nerve cells
Answer:The target cells of neurons include other nerve cells in the brain, spinal cord, and autonomic ganglia, and the cells of muscles and glands throughout the body.
Explanation:please give braineest
Answer:
A nerve is formed by a bundle of many neurons. Neurons develop from the neural tube of the early embryo and in many animals continue development until sometime after birth. The development of motor neurons that have elongated axons is best understood. These cells are derived from tissue on the ventral side of the neural tube.
Explanation:
i found it on bing for you can you answer my newest qu plz i really need help
Graded for correctness: In humans, the ability to digest lactose beyond childhood is determined by a single gene on chromosome 1. L denotes the allele that gives the ability to digest lactose and l denotes the inability to digest lactose. On chromosome 3 is the gene for widows peak. A denotes the allele for no widows peak and a denotes a widows peak. A woman volunteers to be a participant in a genetic research study. Her genotype is LlAa. A doctor harvests a single egg from her body. The genotype of her egg is LA. How did her chromosomes line up at the metaphase plate during meiosis
Answer:
Metaphase I:
Homologous chromosomes are placed in the equatorial planeChromosomes carrying the dominant alleles, L and A, face one of the polesThe homologous chromosomes, carrying the recessive alleles, l and a, face the opposite pole.Metaphase II:
Chromosomes carrying the dominant alleles, L and A, are placed in the equatorial planeOne of the chromatid sisters of each chromosome faces one of the polesThe other chromatid sisters of each chromosome face the opposite pole.You will find the image in the attached files.
Explanation:
During metaphase I, homologous pairs migrate to the equatorial plane. They randomly aline with their kinetochores facing opposite poles. The random arrangement of tetrads is different in every cell going through the meiosis process. There is no equal alinement between two cells. When tetrads aline in the equatorial plane, there is no predetermined order for each of the homologous chromosomes of each tetrad to face one of the poles and then migrate to it while separating. Each of the chromosomes has two possibilities for orientation at the plane. When the new haploid cells are formed, the number of variations in each cell is also different and depends on the chromosomes that form that cell. This random order in the equatorial plane is what introduces variation into the gametes. It is almost impossible that two gametes resulting from meiosis will get the same genetic charge.
During metaphase II, fibers of the spindle apparatus take chromosomes toward the equatorial cell plane, where they line up. Sister chromatids are holden together until they reach the Anaphase, during which specialized enzymes break the bonds between chromatids and separate them. Each chromatid migrates to one of the poles. In telophase, the new chromosomes are already in the corresponding poles, and the nuclear membrane forms again. Finally, cytokinesis occurs.
In this example, we will assume no crossing-over in the prophase. I will propose the two metaphase stages.
Metaphase I: Pole 1
Chromosome 1 ---------L---- -----------A--------- Chromosome 3
----------L---- -----------A---------
Equatorial plane.....................................................................................................
Chromosome 1 ---------l---- -----------a--------- Chromosome 3
---------l---- -----------a---------
Pole 2
In this scheme of Metaphase I, homologous chromosomes are already aligned in the equatorial plane. Each homologous chromosome is facing a pole. So, in the superior part of the scheme, we have chromosomes 1 and 2 carrying the dominant alleles L and A. Both chromosomes are facing pole 1. Then, we can recognize the equatorial plane, and on the other side, we find the homologous chromosomes 1 and 2, facing pole 2, and carrying the recessive alleles, l and a.
During anaphase I, homologous chromosomes will separate and migrate to different poles. In this example, we are interested in chromosomes carrying the dominant alleles that migrate to pole 1. LL and AA.
Metaphase II: Pole 1
Chromatid 1 ---------L---- -----------A-------- Chromatid 3
Equatorial plane.....................................................................................................
Chromatid 1 ----------L---- -----------A--------- Chromatid 3
Pole 2
During metaphase II, each chromatid sister carrying the dominant alleles faces a different pole. During anaphase II they separate and migrate again.
The total result of meiosis in this particular cell is the formation of 4 haploid cells -gametes-: LA, LA, la, la
What is nontherapeutic research, and why, according to Fremgen, is obtaining informed consent, particularly important in this sort of research?
Nontherapeutic research refers to studies conducted primarily for scientific or academic purposes rather than directly benefiting the participants' health or well-being.
According to Fremgen, obtaining informed consent is particularly important in nontherapeutic research due to the potential risks and ethical considerations involved. In nontherapeutic research, participants may be subjected to procedures or interventions that are not directly intended to improve their health outcomes. Informed consent ensures that participants fully understand the purpose, risks, benefits, and alternatives associated with the study before voluntarily agreeing to participate.
It allows individuals to make autonomous decisions regarding their involvement and protects their rights, autonomy, and welfare. Obtaining informed consent demonstrates respect for participants' autonomy and helps uphold ethical principles, such as beneficence, non-maleficence, and respect for persons, in the realm of nontherapeutic research.
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What is the function of stabilizing proteins?
Answer:
Stabilization of a protein translates into preservation of the protein structure during storage, in thermodynamic equilibrium with its surrounding
Explanation:
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The article named Apes' Simple Nests Are Feats of Engineering. Where the author talks about how apes make their nest and how they use it. Apes make their nest in which they sleep during the night. Roland Ennos of the University of Manchester says that their nests look man -made and it was thought that apes do know how to use wood to make their nests.They also talk about the length and width of the nest. It takes 10 min for an ape to make their nest. From a new study they observe that some apes have a nest similar to bent nests attached between trees and some have oval-shaped nests on the tree branches where they sleep . On the other hand chimps also make similar nests like aps but according to an article it states that chimps sometimes sleep on the ground while aps doesn’t. Chimpanzee nests give a new way to research more on how they make their nest on ground by using some wood, plants and grass to make it comfy rather than on trees that maybe there were less quantities of trees or maybe they have different behavior than others.
The Apes' Simple Nests Are Feats of Engineering article is about how apes build their nests and how they use them. Chimps, like apes, build comparable nests, but they also occasionally sleep on the ground, whereas apes do not.
According to the article, it was believed that apes were unable to make nests using wood; however, Roland Ennos of the University of Manchester stated that the nests look man-made. The article also mentions the size of the nest, which is usually large enough for the apes to sleep in at night. It takes only ten minutes for an ape to create its nest. In a recent study, researchers observed that some apes construct nests that resemble bent nests linked between trees, while others construct oval-shaped nests on tree branches where they sleep.
Chimps, like apes, build comparable nests, but they also occasionally sleep on the ground, whereas apes do not. Chimps' nests provide a new avenue for exploring how they build nests on the ground using wood, plants, and grass to make them more comfortable, which may be due to a lack of trees or different behavior.
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BILL NYE NUTRITION VIDEO
You are made of
Answer:
sounds good , but I don't get you
Who formulated the Universal law of Gravitation (G)
Answer: Isaac Newton
Explanation: Sir Isaac Newton put forward the universal law of gravitation in 1687 and used it to explain the observed motions of the planets and moons
Do you think new helpful species of bacteria will evolve with different functions? What would they do? What traits could they have to help them do these things?
please help
i will give brainliest and 5 * and 10 points for the best answer
i don't want to see any link as an answer
if i do you will be reported
Answer:brainly The French Revolution began less than two decades after the American Revolution. In many ways, the American experience was an inspiration for the citizens of France. But the people of the two countries had different situations and had different concerns, which influenced the way each revolution began, progressed, and ended. In this assignment you will write an essay that compares and contrasts the two revolutions.
Explanation:
can anyone help me with this question?
Answer: Organic chemicals can contribute to local and regional losses of freshwater biodiversity and ecosystem services. ... Organic chemicals were likely to exert acute lethal and chronic long-term effects on sensitive fish, invertebrate, or algae species in 14% and 42% of the sites, respectively.
Explanation:
plants absorb from the atmosphere and release to the atmosphere.
a. true
b. false
a. true. Plants do absorb certain gases from the atmosphere and release certain gases back into the atmosphere through various physiological processes.
One of the most well-known processes is photosynthesis, where plants absorb carbon dioxide (CO2) from the atmosphere and release oxygen (O2) as a byproduct.
This is a crucial role that plants play in the carbon cycle and in maintaining the balance of atmospheric gases.
Additionally, plants can also release volatile organic compounds (VOCs) and other gases as part of their normal metabolic activities, which can have impacts on air quality and atmospheric chemistry.
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HELP ME
Explain how physical variation is expressed in human beings and how it relates to cultural groups and ethnicity?!??
Which claim about reproduction in dogs can best be supported using a valid argument?
A. Offspring produced by sexual reproduction are genetically identical.
B. Gametes from both dogs are needed to maintain the correct number of chromosomes in the offspring
C. Phenotypic variation will occur in the offspring as a result of mitosis in the gametes.
D. Binary fission is required for sexual and asexual reproduction in dogs.
Answer:
b
Explanation:
In the photo of the house; What is happening to the foundation of
the house?
Answer:
errosion is causing it to crumble and become unstable
Why are water and sunlight two abiotic factors that are important to most organisms?
a) identify the three groups of animals which have the greatest ability to conserve water.
The three groups of animals which have the greatest ability to conserve water are as follows: Reptiles, desert mammals, and birds are the three groups of animals that have the greatest ability to conserve water.
What is water conservation?
Water conservation is the process of utilising water more efficiently to guarantee that there is enough water to fulfil current and future needs. The primary objective of water conservation is to reduce the amount of water used in agriculture, industry, and homes.
The three groups of animals that have a significant ability to conserve water are:
Reptiles: Many reptiles, including snakes, lizards, and tortoises, have evolved adaptations to minimise water loss. They have scaly skin that helps reduce water evaporation, and some species can obtain water from their diet or by licking dew or water droplets. Additionally, some reptiles can enter a state of dormancy (aestivation) during dry periods to conserve water.
Desert-adapted mammals: Animals that are specifically adapted to arid desert environments have developed various physiological and behavioural adaptations to conserve water. Examples include camels, kangaroo rats, and fennec foxes. These animals have efficient kidneys that concentrate urine, limited sweat glands, and the ability to obtain water from their food.
Birds: Certain bird species, particularly those living in arid or desert regions, have evolved remarkable adaptations to conserve water. For instance, desert-dwelling birds such as ostriches, sandgrouse, and certain species of owls have the ability to concentrate their urine and produce highly concentrated faeces to minimise water loss. Some birds can also extract moisture from their food or rely on specialised glands to collect and store water.
It's important to note that while these animal groups have developed effective mechanisms for water conservation, the specific abilities to conserve water may vary among species within each group.
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ANSWERRR FAST Earthquakes happen as a result of:
Two continental plate's converging
Two oceanic plate's converging
Two tectonic plates transforming
( i have more questions!!!)
Answer:
Hey mate......
Explanation:
This is ur answer.....
Two tectonic plates transformingHope it helps!
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if transported to the pm, will the c-terminus of this protein be extracellular or intracellular?
If a protein is transported to the plasma membrane (PM), the location of its C-terminus will typically be intracellular. This is because the C-terminus of most proteins is synthesized first and is usually oriented towards the cytoplasm during protein synthesis and maturation.
To determine whether the C-terminus of a protein will be extracellular or intracellular if transported to the plasma membrane (PM), we need to consider certain factors.
The location of the C-terminus depends on the protein's structure, function, and the orientation of the plasma membrane.
Proteins that are transmembrane proteins, meaning they span the plasma membrane, have both N- and C-termini positioned in different cellular compartments.
The N-terminus is typically located intracellularly, while the C-terminus faces the extracellular space.
In general, proteins that are involved in cell signaling, cell adhesion, or receptor functions often have extracellular C-termini.
These proteins interact with the extracellular environment to transmit signals or bind to ligands.
On the other hand, proteins that participate in intracellular processes, such as enzyme activity or cytoskeletal organization, often have intracellular C-termini.
These proteins function within the cell and may interact with other intracellular components.
Therefore, if the protein in question is known to be a transmembrane protein and its C-terminus is essential for its function or interaction with extracellular factors, it is likely that the C-terminus will be extracellular when transported to the plasma membrane.
However, if the protein primarily performs intracellular functions, the C-terminus would be oriented intracellularly.
It's important to note that the specific protein and its characteristics would ultimately determine the orientation of the C-terminus in the plasma membrane.
The orientation of the C-terminus in the plasma membrane would depend on the specific protein and its structural and functional characteristics.
Additional information about the protein's structure, localization, and function would be needed for a more precise determination.
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Which are steps that could be used to solve 0 = 9(x2 + 6x) – 18 by completing the square? Check all that apply.
18 + 81 = 9(x2 + 6x + 9)
18 + 9 = 9(x2 + + 6x + 9)
18+ 36 = 9(x2 + 6x + 36)
11 = (x + 3)2
= (x + 6)2
342 =
V99 = (x +
Nbbff
Explanation:
What is the name of this website
or the book?
Answer:
A and D
Explanation:
Is it possible for genetic recombination to occur during meiosis II?
a.Yes, sister chromatids on one chromosome can exchange genetic material.
b.Yes, slight overlap of adjacent chromosomal arms makes it possible for crossing over to occur between two nonhomologous chromosomes.
c.No, recombination requires two homologous but nonidentical chromosomes.
d.No, sister chromatids cannot get close enough during metaphase II.
No, sister chromatids cannot get close enough during metaphase II so genetic recombination does not occur, option d is correct.
During meiosis I, genetic recombination occurs when homologous chromosomes exchange segments of genetic material through a process called crossing over. This results in the formation of recombinant chromosomes with a combination of genetic information from both parents. Meiosis II is the second stage of meiosis and involves the separation of sister chromatids.
The sister chromatids, which are identical copies resulting from DNA replication in the S phase of the cell cycle, are pulled apart and distributed to the daughter cells during anaphase II. However, there is no opportunity for genetic recombination to occur during this stage because the sister chromatids are too close together and do not have the opportunity to exchange genetic material, option d is correct.
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