A seed can germinate once the endosperm dehydrates sufficiently. Crown roots form before seminal roots. A plant does not need its seed once it has leaves.
What is endosperm ?The endosperm is a tissue that develops within the seeds of the majority of flowering plants after multiple fertilisation. Most species exhibit triploidy, which may be auxin-driven. Although it can also contain lipids and protein, it surrounds the embryo and supplies nutrients in the form of carbohydrates.
By providing nutrition, safeguarding the embryo, and regulating embryo growth by functioning as a mechanical barrier throughout seed development and germination, the endosperm plays a crucial part in sustaining embryonic growth.
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Describe how scientist choose the kingdom in which a eukaryote belongs.
Answer:Scientists choose the kingdom in which a eukaryote belongs by asking questions, such as, Is this organism unicellular or multicellular, autotrophic or heterotrophic and how does the organism reproduce. They may also check the cellular structures to see whether the nucleus and organelles are membrane bound.
What happens to undigested food after passing through the large intestine?.
The last section of your digestive system is your big intestine. Your large intestine receives undigested food from your small intestine.
It then excretes undigested food and fiber while reabsorbing water needed during digestion. Food waste materials become hardened as a result, forming feces, which are eventually expelled.
When food enters the big intestine, the process of absorbing nutrients is almost complete. The primary function of the large intestine is to separate water from the undigested material and create solid waste (poop) that may be expelled. The primary functions of the large intestine are to absorb extra water and to prepare feces, or undigested waste, for elimination through the rectum and anus.
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what posterior part of the eye is full of blood vessels?
Your eye's choroid is the spongy middle layer between the sclera and retina. The choroid, which is packed with blood vessels, provides nourishment for the retina's outer layers.
Which region of the eye is lined with blood vessels?
Choroid. The thin, blood-rich membrane that supplies blood to the retina and is located between the sclera and the retina.The iliac body: the part of the eye that connects the choroid and iris together.
Which eye layer has blood vessels?
Between the sclera, which is the white outer layer of the eye, and the retina, which is the inner layer of nerve tissue at the back of the eye, is the choroid, a thin layer of tissue that is part of the middle layer of the wall of the eye. Blood vessels line the choriod, carrying nutrients and oxygen to the eye.
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What colors of light does chlorophyll reflect the most?.
Green and yellow-green wavelengths are the most reflected by Chlorophyll.
Chlorophyll b and beta-carotene are photosynthetic pigments that absorb energy that chlorophyll a does not.
Except for green, which it reflects, chlorophyll absorbs all visible light wavelengths. Plants appear green to us as a result of this. All visible light wavelengths absorbed by black pigments. The vast majority of wavelengths striking white pigments are reflected.
While most plants reflect more green than any other color in the visible spectrum, the leaves only transmit or reflect a small percentage of green light. The vast majority of green light is beneficial to photosynthesis.
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what protects mrna from attack by cellular enzymes?
Water exits plants and enters the atmosphere through which process?
Water exits plants and enters the atmosphere through the transpiration process.
The wаter cycle, аlso known аs the hydrologic cycle, is the journey thаt wаter tаkes аs it moves through the аtmosphere аnd through vаrious pаrts of Eаrth. There аre multiple processes in the wаter cycle, which include:
Evаporаtion Condensаtion Precipitаtion TrаnspirаtionTrаnspirаtion is the process by which moisture is cаrried through plаnts from roots to smаll pores on the underside of leаves, where it chаnges to vаpor аnd is releаsed to the аtmosphere. Trаnspirаtion is essentiаlly evаporаtion of wаter from plаnt leаves. Trаnspirаtion аlso includes а process cаlled guttаtion, which is the loss of wаter in liquid form from the uninjured leаf or stem of the plаnt, principаlly through wаter stomаtа.
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1) The human body contains as many as 1 ______ neurons.a) millionb) billionc) hundred thousandd) trillion
Answer:
Trillion
Explanation:
What are the parts of the bony fish labeled a and b? Select from the drop-down menus to label the parts of the bony fish. k-12.
Answer:
Explanation:
tail bone
Spine ribs gills catfish ewwww
A. Dorsal Fin
B. Pelvic Fin
k12 test
T/F : agglutinogens are only found on the surface of red blood cells.
True
Agglutinogens are found only on the surface of red blood cells. Anything that acts as an antigen in the formation of a specific agglutinin.
Any substance that acts as an antigen to stimulate agglutinin production. Agglutinogens are proteins found on the surface of all red blood cells in the body. The type of agglutinogens found on red blood cells can help determine a person's blood type.
Red blood cells are the most common type of blood cell and the primary way for vertebrates to distribute oxygen to their body tissues via blood flow through the circulatory system. Red blood corpuscles, haematids, erythroid cells, and erythrocytes are other names for them.
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in the stomach, food becomes a semisolid paste called
In the stomach, food becomes a semisolid paste called Chyme.
What is chyme?
Chyme, a thick semifluid mass of partially digested food and digestive fluids generated during digestion in the stomach and intestine. The gastric glands produce digestive fluids in the stomach, which contain the enzyme pepsin, which breaks down proteins, and hydrochloric acid. Food causes the pancreas to secrete fluid having a high concentration of bicarbonate once it reaches the small intestine. This fluid neutralizes the extremely acidic gastric juice, which would otherwise destroy the intestine's membrane lining, leading to a duodenal ulcer. Other secretions from the pancreas, gallbladder, liver, and intestinal wall glands contribute to the overall amount of Chyme.
Food particles are absorbed by the intestinal wall and delivered to the circulation when they are sufficiently reduced in size and content. Some food is transferred from the small intestine to the large intestine, sometimes known as the colon. Bacteria in the colon break down proteins, carbohydrates, and certain plant fibers that are not completely digested by the other organs.
Hence, food becomes a semisolid paste called Chyme
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Read the excerpt from paragraph 3.
Stan Krugman collected the seeds and an attempt at germinating some of the seeds was made in Houston.
Somewhat surprisingly, it proved successful and the seeds started growing, but they did not survive long because
the facilities there were inadequate. A year later the remaining seeds were sent to the southern Forest Service
station in Gulfport, Mississippi (sycamore, loblolly pine, and sweetgum) and to the western station in Placerville,
California (redwood and Douglas fir) to attempt germination. Many of the seeds, and later cuttings, were successful
and grew into viable seedlings.
What is the meaning of viable as it is used in the excerpt?
A. weak
B. suitable
c. complete
D. awful
The meaning of viable as it is used in the excerpt is suitable.
Thus, the correct option is suitable (B).
To find the meaning of viable, we must know what kind of the word. From the sentence "Many of the seeds, and later cuttings, were successful and grew into viable seedlings", we know that the word viable is adjective because viable explains the noun 'seedling'. The sentence connected with biology term.
In biology, we will find the explanation about a viable seed. А viаble seed is one which is cаpаble of germinаtion under suitаble conditions. The definition includes dormаnt but viаble seeds, in which cаse the dormаncy must be broken before viаbility cаn be meаsured by germinаtion. From this definition, we can conclude that the meaning of viable is suitable.
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Answer:
B. Suitable
Hope this helps!
Explanation:
consists of sensory receptors, nerves, ganglia and plexuses and senses stimuli; sends information to and receives information from the central nervous system is called
Consists of sensory receptors, nerves, ganglia, and plexuses and senses stimuli; sends information to and receives information from the central nervous system is called the peripheral nervous system.
Sensory neurons in the peripheral nervous system (P.N.S) receive information, which is then sent to the central nervous system (C.N.S.) for processing in the general information flow.
Synapses form between neurons as a result, making it possible to communicate with other neurons or bodily systems.
Sensory receptors' primary function is to provide information about our internal and external environments. Through the process of sensory transduction, they are able to accomplish this by sensing inputs in these settings and delivering them to the nervous system.
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in the five-kingdom system, which kingdom consists primarily of unicellular eukaryotes?
The Protista kingdom is composed primarily of unicellular eukaryotes, making it the most diverse of the five kingdoms in the five-kingdom system.
Protists, as they are commonly known, can be found in all types of habitats, from oceans and freshwater to soil belonging to the five kingdom system.
They range from microscopic single-celled organisms to large multicellular organisms, and can be either photosynthetic or heterotrophic.
Protists are essential for the health of ecosystems, as they play a key role in the global cycling of nutrients and energy and are unicellular.
Protista are found in a variety of habitats, from freshwater to marine, and range from simple to complex organisms. Examples of protists include algae, slime molds, and amoebas.
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Agents that prevent or relieve itching are ________ agents.A) antifungalB) antibioticC) antiviralD) antipruritic
Answer:
D. Antipruritic
Explanation:
To solve this we need to know the roots of the words we are given. "Anti" we know means to inhibit or stop. Fungal refers to fungus, biotic refers to bacteria, and viral refers to viruses. This leaves the root "Pruritic " for us to figure out. By process of elimination, this is of course our answer, but we need to know and recognize that the word "Pruritis" means itching. Therefore antipruritic would refer to something that stops or inhibits itching.
which micropipette should you use to most accurately dispense 125 microliters of solution?
P200 micropipette should you use to most accurately dispense 125 microliters of solution
The micropipette is used to transport tiny volumes of liquid (less than 1 ml). On micropipettors, the scales are in microliters (1 ml = 1000 l). We will be using micropipettors known as "Pipetmans," which are manufactured by Rainin. These are extremely pricey, sensitive tools that cost $250–300 each. Pipetmen are available in three sizes that may pipete three different volume ranges: P20 = 0.5–20 l, P200 = 20–200 l, and P1000 = 200–1000 l. They work in conjunction with plastic disposable tips, which are frequently sterile.
The simple criterion for choosing amongst them is to employ the smallest micropipettor you can while remaining within its capacity. Say you need to measure out 25 microliters of a solution, for instance. DON'T DO IT, okay? A P20 can't fit someone who is 25, so don't. You can fit 20 in either a P200 or a P1000; choose the smaller one.
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optimal growth temperatures are based on those at a two-inch soil depth.
Optimal growth temperatures are based on those at a two-inch soil depth. is true statement.
What is Optimal growth temperatures?
the shortened term The term "OGT" refers to the midpoint of the optimal growth temperature range. The OGTs that are taken into consideration for plastid species, archaea, and bacteria are 2 to 52.5°C, 22.5 to 114°C, and 7 to 85°C, respectively.Most bacteria are mesophiles, which can thrive best at temperatures between 20 and 45 degrees Celsius. Due to their preference for body temperature (37 oC), many infections are mesophiles. It is best for thermophiles to grow between 55 and 65 degrees Celsius. In hot springs, compost piles, and hot water heaters, thermophiles can be discovered.The optimal temperature range for human infections to proliferate is between 35 and 37 degrees Celsius. At 36°C 2°C and 35°C 1°C, respectively, it is advised to conduct biochemical tests for identification of pure isolates.To learn more about two-inch soil refer to:
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The hair color of 39 males and females was recorded. Thirteen of them had brown hair. Eleven of them had blonde hair. Five males had brown hair. Four females had blonde hair. There were 21 females altogether.
The amount of melanin, a pigment, in hair determines the color of the hair. People with black or brown hair have high levels of eumelanin, one kind of melanin.
Given the total number of boys and girls = 39
Number of people having brown hair = 13
Number of people having blonde hair = 11
Number of boys having brown hair = 5
Then number of girls having brown hair = 13 - 5 = 8
Total number of females = 21
Number of females having blonde hair = 4
Then number of boys having blonde hair = 11 - 4 = 7
Number of boys in total strength = 39 - 21 = 18
Number of girls having blonde hair and brown hair = 8 + 4 = 12
Number of girls without blonde or brown hair = 21 - 12 = 9
Number of boys without blonde or brown hair = 18 - (5+7) = 6
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Answer: I did the test
Uing the pedigree, which tatement i true about Leopold’ family? If Leopold had a econd male child, that on would have inherited hemophilia. Leopold’ daughter, Alice, i homozygou receive for the hemophilia trait. Leopold’ on can’t have a biological female child with hemophilia. The mother of Leopold’ children mut be a carrier of hemophilia becaue the daughter i a carrier
According to the pedigree chart, when a father has hemophilia, the trait is passed from father to son, and when a mother is a carrier, it is passed from mother to son.
There is a 50/50 chance that the hemophilia gene will be inherited by a child from a mother who carries it. Women who inherit the gene become carriers and may pass it on to their offspring. The gene causes hemophilia in males who inherit it. The gene was not inherited by the males aged 16, 10, 5, and 8.Hemophilia A and hemophilia B have an X-linked recessive inheritance pattern. One of the two sex chromosomes, the X chromosome, contains the genes linked to these diseases. Males (who only have oneX chromosome) have oneTo know more about hemophilia here
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How do objects appear when all of the colors of light are absorbed reflected selectively absorbed?.
The objects appear when all of the colors of light are
When аn object аbsorb light, the аtoms thаt mаke up thаt object аre аbsorsing the energy of the light hitting the object.When аn object reflects light, the аtoms thаt mаke up thаt object cаnnot аbsorb the energy of the light hitting the object.When an object selectively absorbed light, the аtoms of the object will аbsorb the light energy if the frequency of the light is exаct аmount of energy object.Light аcts аs both а pаrticle аnd а wаve, аnd is meаsured in two importаnt wаys. The wаvelength of light refers to the distаnce between two consecutive wаves in sequence, meаsured in nаnometers (nm). The frequency of the light meаsures the vibrаtionаl intensity аnd speed of the wаve (i.e. how mаny wаves in а given аmount of time), meаsured in hertz (Hz). These two wаys of meаsuring light аre inversely proportionаl, meаning when the wаvelength of light is higher, the frequency will be lower, аnd vice versа.
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the process of synthesizing rna from dna is known as
Transcription is the process by which RNA is synthesis from DNA.
Transcription, as used in genomics, is the process of creating an RNA copy of a gene's DNA sequence. The information about the protein encoded by the gene is transported by this copy, known as messenger RNA (mRNA).
Although DNA is a more durable molecule than RNA, the latter is a more universal biological language.
During the DNA transcription process, which converts a DNA template into RNA, RNA polymerase enzymes produce an RNA copy of a DNA sequence. RNA polymerases are multi-chained polypeptides with a molecular weight of 500,000. In eukaryotic cells, there are three different categories of RNA polymerases.
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a rooster with grey feathers is crossed with a hen of the same phenotype. they produce 15 chicks with grey feathers, 7 chicks with black feathers, and 8 chicks with white feathers. what is the simplest explanation for this inheritance pattern?
The simplest explanation for the observed inheritance pattern of 15 grey-feathered chicks, 7 black-feathered chicks, and 8 white-feathered chicks is that a rooster with grey feathers was crossed with a hen of the same phenotype.
This suggests that the grey feathers are dominant, while the black and white feathers are recessive. The resulting offspring will therefore display a 3:1 ratio of grey to black-and-white feathers, which is exactly what was observed.
The simplest explanation for this inheritance pattern is that the rooster and hen both possess a gene for grey feathers, but that the rooster may also possess a gene for black feathers, while the hen may possess a gene for white feathers.
This would explain why the offspring of the two birds consists of 15 chicks with grey feathers, 7 chicks with black feathers, and 8 chicks with white feathers.
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Why did Mendel choose pea plant for his experiments Class 10?.
Mendel chose the pea plant for his experiments because of its distinct and easily observable traits, self-fertilization, short generation time, and the presence of contrasting traits in several characteristics.
The reasons are stated below:
One reason is that pea plants have distinct, easily observable traits, such as flower color and seed shape. Additionally, pea plants have both male and female reproductive organs, making them self-fertilizing.
This allowed Mendel to easily control the breeding of the plants and track the inheritance of specific traits.
Another reason is that pea plants have a relatively short generation time, which meant Mendel could conduct many generations of breeding experiments in a relatively short period of time.
Furthermore, Pea plants also have seven characteristics with two contrasting traits. This made it easy for Mendel to study the inheritance patterns of these traits.
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Can someone help me with these 2 questions?
Answer:
1.We'd all die. Explanation: If we were a newly fertilized egg, we wouldn't develop. We'd stay that fertilized egg. If we were a full sized adult, we wouldn't heal wounds, wouldn't replace cells (you lose about 40,000 skin cells every minute - so you'd run out of skin in a short time if you didn't have cell division).
2A mutation occurs during the development of muscle cells but not in blood cells. Different genes are activated in muscle cells than in blood cells. Muscle cells experience different environmental influences than blood cells. Muscle cells are produced by the brain, but blood cells are produced by the heart.
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When was cancer first discovered?.
Cancer was first discovered about 3000BC.
Although the word "cancer" was not used, the earliest description of the disease was found in Egypt and dates to about 3000 BC. A portion of an ancient Egyptian trauma surgery textbook is replicated in the Edwin Smith Papyrus.
Cancer has been documented in the history of medicine since the first medical records were recorded. Seven papyri that were found and deciphered at the end of the 19th century include the earliest descriptions of cancer that are known to exist. The first direct information about Egyptian medical practice was provided by them.
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Are yellow seeds dominant or recessive?.
Yellow seeds are dominant.
Dominant describes the association between two genetic variations.An individual inherits one of each of the two alleles for each gene from each parent. Only one of the gene's alleles—known as the dominant gene—will be expressed if the alleles are distinct.
Allele-allele interactions that are dominant or recessive are the most common. A gene is said to have a dominant allele when it effectively exceeds a recessive allele. There are two examples of dominant/recessive gene interactions: blood type and eye colour.
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Cytoine make up 30% of the nucleotide in a ample of DNA from an organim. Approximately what percentage of the nucleotide in thi ample will be guanine?
Guanine will make up 20% of the nucleotides in this molecule, with the remaining 80% being cytosine. Guanine (20%) = Cytosine (20%); Adenine (30%) = Thymine (30%).
What is the ratio of guanine to cytosine in DNA?The DNA of any organism should have a 1:1 ratio of pyrimidine and purine nucleotides, according to Chargaff's standards. More specifically, the ratio of guanine and adenine to cytosine and thymine should be the same.
What proportion of cytosine and thymine does a DNA sample with 15% adenine contain?According to Chargaff's criteria, adenine and thymine must always couple with cytosine and guanine, respectively, in a DNA molecule. Thymine couples with adenine, so there will always be one thymine base for every adenine base.
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Most cells in the adult body are no longer capable of ____________.
Most cells in the adult body are no longer capable of differentiation.
What do you mean by differentiation?A stem cell changes from one type to another throughout the process of cellular differentiation. The cell typically transforms into a more specialised type. A multicellular organism undergoes numerous rounds of differentiation as it develops from a straightforward zygote to a complex system of tissues and cell types. Adult stem cells continue to develop as they divide to produce fully differentiated daughter cells during tissue repair and regular cell turnover. Responses to antigen exposure result in some differentiation. A cell's size, shape, membrane potential, metabolic activity, and receptivity to signals all significantly alter during differentiation. These variations in gene expression, which are the subject of the study of epigenetics, are substantially to blame for these changes.
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Why do some people believe in the fixity of life? Or the fixity of Earth?
Some people may believe in the fixity of life and the fixity of Earth for a variety of reasons, including religious or philosophical beliefs, lack of exposure to scientific evidence, or a mistrust of scientific explanations.
Many religious beliefs hold that life and the Earth were created by a higher power and that they remain unchanging, thus making the fixity of life and the Earth an integral part of those beliefs.
Some people may be resistant to accepting the idea of evolution because it challenges their existing beliefs or understanding of the world.
Some people may have had little exposure to scientific evidence and theories, and they may not have been exposed to the evidence that supports the idea of evolution.
Some people may have mistrust of science, and they may be skeptical of scientific explanations, particularly those that challenge their existing beliefs or understanding of the world.
People may also believe in the fixity of life and the fixity of Earth because of lack of understanding of the scientific concepts and evidence behind the idea of evolution and the processes that shape the Earth and life.
Do trees hold any special cultural importance to you, your family or culture? What is that importance?
Answer:
Particular trees have a sacred status, are used in rituals, provide ingredients for cultural dishes or have symbolic importance for ethnicity, identity and connection to a place. Trees also play a central role in stories, myths and histories.
Answer:
Trees are widely considered to be important in many cultures around the world for a variety of reasons. Some examples include:
Many indigenous cultures view trees as sacred and hold them in high spiritual regard. They may be seen as symbols of life, fertility, and wisdom, and are often revered in religious rituals and ceremonies.In many cultures, trees are associated with ancestors and the afterlife. They may be planted near graves or used in funeral ceremonies as a way to honor the dead and connect them with the living.Trees are also important for their practical uses, such as providing shade, food, medicine, and wood for shelter and tools. Many cultures have developed a deep understanding of how to use and care for different types of trees and rely on them for survival.Trees are also important for environmental reasons, they play a crucial role in maintaining the balance of the ecosystem and regulating the climate, they also help in providing fresh air and maintaining the water cycle.Overall, trees hold cultural, spiritual, practical, and environmental importance in many cultures around the world.
what type of biomolecule contains phosphorus
Answer:DNA,RNA,ATP
Explanation:
