Answer:
jey que tal
Explanation:
Down syndrome, the most common genetic condition in the United States, is also called trisomy 21. What does this mean?
(PLEASE ANWSER ONLY IF YOUR SURE )
A)
A person with Down syndrome has two copies of chromosome 21 but they're fused together. During early embryo development, these chromosomes didn't segregate properly.
B)
A person with Down syndrome has three copies of chromosome 21 instead of two copies. Two sperm cells simultaneously fertilized the egg cell.
C)
A person with Down syndrome has only one copy of chromosome 21 instead of two copies. Either the sperm cell or the egg cell was lacking this chromosome.
D)
A person with Down syndrome has three copies of chromosome 21 instead of two copies. An extra chromosome 21 was present in either the sperm or the egg cell.
A person with Down syndrome has three copies of chromosome 21 instead of two copies. An extra chromosome 21 was present in either the sperm or the egg cell (Option D).
What is a trisomy?A trisomy is a genetic phenomenon where there homologous chromosomes (instead of two) are found in diploid cells.
A person with Down syndrome carries three copies of chromosome number 21 instead of two.
In conclusion, A person with Down syndrome has an extra chromosome 21 that was present in either the sperm or the egg cell (Option D).
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Identify and describe the phenomenon in an investigation
A phenomenon in an investigation is any situation and/or process observed in the real world that needs to be elucidated by using the scientific method.
What is a phenomenon in sciences?In sciences, the word 'phenomenon' makes reference to any process observed in the real world whose causes and/or consequences remain to be elucidated.
Phenomena are elucidated by means of a series of sequential steps in order, which is known as the scientific method, it is based on experimental procedures to test a given explanation (hypothesis) of these phenomena.
In conclusion, a phenomenon in an investigation is any situation and/or process observed in the real world that needs to be elucidated by using the scientific method.
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The author uses the Money Pit diagram to show
A
the rocks and minerals below Earth's surface.
B
the depth at which various items were found.
C
the considerable money spent to explore it.
D
the location of the pirate treasure.
The author uses the Money Pit diagram to show the location of the pirate treasure.
What is the Money pit diagram?The money pit diagram depicts the location of a treasure that is deep below the ground. It shows a dip pit in the city of Oakland that was explored by a team in search of a hidden treasure somewhere in the field. The money pit exists in Oakland. Once, explorers who were digging deep saw an inscription which suggested that a treasure was lying deep below.
However, no treasure was eventually found at the site after it was deeply dug. However, the hole dug in search of the treasure had been codenamed money pit until date. The money pit was found out in 1795 by a local boy named Daniel McGinnis
Hence, in this context, the author uses the Money Pit diagram to show the location of the pirate treasure.
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Answer: The answer is (B) the depth at which various items were found.
Explanation:
"How does shade affect plant growth?"
It will affect the plant growth entirely. If it is a plant that needs sunlight to grow it will not grow but if it is a plant that needs shade it will depend on the hade to grow
Explanation:
During an allergic response to a bee sting or pollen, which of the following hormone is often released?
a) PTH
b) prostaglandin
c) GH
d) thyroxine
Prostaglandin is released in response to to a bee sting or pollen.
What is an allergic response?An allergic response is a series of reactions induced by the immune system of the body due to the presence of a foreign substance known as an allergen.
A bee sting or pollen can be recognized as allergen and results in the release of prostaglandins by mast cells.
In conclusion, prostaglandins are produced in response to allergens.
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Enzymes can be inhibited in different ways. Describe two methods of enzyme inhibition by describing similarities and differences.
Enzymes can be inhibited in different ways this can inclued three types of reversible enzyme inhibition: competitive, non-competitive and uncompetitive.
How can enzymes be inhibited?Irreversible and reversible enzymatic inclusion. A valent-chain inhibitor occurs with a valent-chain inhibitor, whereas a valent enzyme does not occur with a valent-chain inhibitor.
In enzymatic inhibition, the inhibiting substance forms chemical bonds with the enzymes in order to interfere with their catalytic activity. This inclued types of enzyme inhibition:
Irreversible inhibitors bind to enzymes leading to their definitive inactivation. These inhibitors are very toxic to the body as they are not specific, being able to inactivate any enzyme.Reversible inhibitors can be divided into two groups: competitive and non-competitive. This division is based on the presence or absence of competition between the inhibitor and the substrate for the active center of the enzyme.See more about enzymatic inhibition at brainly.com/question/13174512
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What organelles do plants have in their roots that helps them to sense gravity?
a) stigma
b) statocyte
c) starch
d) stamen
statocytes, organelles do plants have in their roots that helps them to sense gravity, correct answer is B.
what are statocytes ?
In higher plants, statocytes are the cells which sense gravity. They contain amyloplasts-statoliths, amyloplastic organelles which are filled by starch or sediment at the bottom of the cells. Coleoptiles, shoots, and inflorescence stems all have an elongating area that really is home to statocytes.
how do they help in sensing gravity ?
When the plant is reoriented in the gravity field, the starch-filled plastids (also known as statoliths) in the statocytes, that are highly polarized cells, fall to the physical bottom.
Hence, statocytes help in sensing gravity.
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Identify the independent clause in each sentence below.
1. (We arrived late) because we couldn't find the theater.
2. (The play started) before we found our seats.
3. (We got one of the special) programs that were being sold.
4. When the play was over, (the audience applauded.)
5. After we saw the show, (we went for a walk.)
6. Although the night was cool, (the walk was enjoyable.)
7. While we were walking, (I noticed the moon.)
8. Since it was a full moon, (it was shining brightly.)
9. (We walked along the lake) until it became very late.
10. By the time I got home, (it was almost midnight.)
Explanation:
mhrssxxxx please mark as brainllest
Discuss the cause and transmission of bilharzia
Bilharzia becomes infected if you come into connection with contaminated water for example, when swimming, swimming or washing and the tiny worms tunnel into your skin. Once in your body, the worms move through your blood to areas such as the liver and bowel. After a few weeks, the worms start to lay eggs.
What are the ways of transmission of bilharzia?The parasites enter the body when a person is swimming, washing, or swimming in polluted water. They can also become contaminated by drinking the water or eating food that a person has passed in untreated water.
How can the space of bilharzia be stopped?Prevention & Control
Avoid swimming or wading in freshwater when you are in nations in which schistosomiasis happens.Drink secure water.Water used for bathing should be brought to a rolling boil for 1 minute to kill any cercariae, and then chilled before bathing to avoid burning.To learn more about Bilharzia, refer
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Visit your home and search for living and nonliving things
In a home, living things include microorganisms (e.g., bacteria), pets and humans, whereas non-living things may include water, viruses, etc.
What is a living thing?A living thing is any biological system composed of cells, which are the fundamental unit of life.
Viruses do not have cells and therefore they can be considered non-living parasitic entities, whereas abiotic factors such as water are also considered non living things.
In conclusion, living things include microorganisms and humans, whereas non-living things include water.
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Which of these is most likely to occur soon after an individual eats a meal?
[tex] \\ \\ [/tex]
=> Your body breaks down carbohydrates quickly, and glucose travels directly through the walls of your intestines and into your blood.
Explain how cellular transport is used to maintain homeostasis is one of the following ways: [A]
- reabsorption of water in the nephron
- absorption of water by roots
- reabsorption of nutrients in the nephron
- release and reuptake of neurotransmitters by a neuron
Homeostasis control mechanisms normally occur through negative feedback processes, in this case, reabsorption of water in the nephron.
What is cellular homeostasis?Homeostasis is the process by which the organism maintains constant the constant internal conditions for life. The term is applied to the set of processes that prevent variations in the physiology of an organism.
The main function of homeostasis is to regulate the countless processes that take place in the body in order to keep it in a normal condition. So the majority of water reabsorption that occurs in the nephron is facilitated by the AQPs
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Plants in the tropical
rainforest:
A. Experience some of the most
fertile soil in the world.
B. Help each other to grow and
flourish.
C. Are constantly competing for
scarce water resources.
D. Are numerous and in constant
competition for sunlight.
The rainforest is one of the most diverse biomes. Options A and D. Experience some of the most fertile soil in the world. Are numerous and in constant competition for sunlight.
What si the tropical rainforest?The tropical rainforest is a biome is located near the equator, where precipitations are abundant and the average temperature is elevated most of the year.
As a result of the climatic conditions, this biome gives shelter to a huge number of living organisms. The canopy structure provides many refuges for plants and animals and is an important source of food. It also favors interactions between species.
There are different plant species, such as epiphytes, lianas, stranglers, aerial-rooted pants, and tabular-rooted plants, among other vegetation forms.
Fanerophic species dominate this biome. Evergreen tall trees might reach up to 50 meters in height. They develop dense foliation and branches, becoming a refuge and source of food for many species.
Vegetation does not need to develop strategies for surviving the dry season. Instead, they need to develop strategies for competing for light and nutrients.
Since vegetation is very dense, woody species grow in height looking to get greater sun radiation. Competition for sunlight is quite significant, generating different strata canopy at varying levels in the forest.
Abundant vegetation and other factors such as temperature, precipitation, and natural cycles create one of the most fertile soils favoring the growth and development of many species.
According to this framework, the correct options are A and D. Experience some of the most fertile soil in the world. Are numerous and in constant competition for sunlight.
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In which of the following situations would you least expect to find anaerobic respiration occurring?
Question 17 options:
a) a vat in which beer is being manufactured
b) the sediments at the bottom of a pond
c) a runner's leg muscle during a 400-m dash
d) a human brain engaged in writing this test
e) the inside of a bacterium living inside a human intestine
Answer: a) a vat in which beer is being
Explanation:
what makes the waves pull away in a srtright line
Waves pull away in a srtright line because the the disturbance action of transferring energy is done without an outside influence and in the same medium as well
What is a wave?A wave is defined as a disturbance which travels through a distance, transferring energy from one place to another
Some few types of waves are
Electromagnetic wavesMatter wavesMechanical wavesSo therefore, waves pull away in a srtright line because the the disturbance action of transferring energy is done without an outside influence and in the same medium
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You conduct an experiment to determine the concentration of ions in an unknown solution. You place 300mL inside a dialysis bag and place the bag into a beaker of water with an ion concentration of 100 ppm (parts per million). When you check the experiment an hour later, the bag is swollen and has taken in water. What can you conclude?
The conclusion is that water has moved from the beaker into the bag by osmosis because concentration of solute in the beaker is lower than that in the bag.
What is osmosis?Osmosis is the movement of water molecules across a semipermeable membrane from a solution of low solute concentration to one of high solute concentration.
The concentration of solute in the beaker is lower than that in the bag, therefore, water will move from the beaker into the bag by osmosis.
In conclusion, the solution in the beaker is of lower solute concentration than in the bag.
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Which structure is highlighted and indicated by the leader line?
Answer:
glomerulus and glomerular capsule.
Explanation:
The highlighted structure is glomerulus and glomerular capsule .
What is glomerular capsule?The glomerulus is covered by a two-layered pouche known as bowman's capsule and the space in between both the walls of the capsule is called bowman's space. Bowman's capsule is also known as malphigian capsule.
The glomerular capsules are located in the outer part of the kidney, known as the cortes. The main function of glomerulus capsule is to filter plasma that lead to a production of glomerular filtrate.
The glomerular capsule contain a cluster of microscopic blood vasle and capillaries known as glomerulus were waste product are filterd from the blood. The space in between both the walls of the capsule is called bowman's space. Bowman's capsule is also known as malphigian capsule.
Therefore, the highlighted structure represents glomerulus and glomerular capsule .
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occurs when the individual inherits only one (female) X chromosome
According to the research, Turner syndrome is a condition that occurs when the individual inherits only one (female) X chromosome.
What is Turner syndrome?It is a genetic condition that is due to the lack of an X chromosome or part of it and can include characteristics such as delayed or incomplete development of puberty.
It can be diagnosed at birth or during childhood, puberty, or adulthood.
Therefore, we can conclude that according to the research, Turner syndrome is a condition that occurs when the individual inherits only one (female) X chromosome.
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Which components are part of the bone matrix? Select all that apply.
•Osteoid
•Adipose tissue
•Calcium salts
•Osteoclasts
•Osteogenic cells
The components that are part of the bone matrix are as follows:
OsteoidCalcium saltsWhat is the bone matrix?The bone matrix is that part of the bone tissue that forms most of the mass of the bone.
The bone matrix is comprised of organic and inorganic substances. The organic component of the bone matrix includes the following:
collagenground substanceHowever, the inorganic component is mainly;
inorganic bone salts
hydroxyapatite
Therefore, the components that are part of the bone matrix are as follows:
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Read this review of a science fiction novel. This new science fiction novel is one of the best that I have ever read. It takes place on a shuttle that shines brightly in the deep, dark reaches of outer space. There are colorful characters, exciting action sequences, and lots of suspense. For these reasons and many others, I would say that this book is one of the best! Which technique does the author use to convince the audience that this science fiction novel is high quality? word choice to create ethos imagery to create pathos repetition to create logos imagery to create ethos
A persuasive technique which the author used to convince the audience that this science fiction novel is high quality is: D. imagery to create ethos.
What is a persuasive essay?A persuasive essay can be defined as a type of essay in which the aim of an author (writer) is to convince the readers (audience) to accept his own point of view, perspective, ideas or opinions.
In English literature, the three modes of persuasion in a rhetorical situation include the following:
Logos PathosEthosWhat are ethos?Ethos can be defined as the emotions or character of an author (writer) that are expressed so as to persuade an audience to accept a specific point of view, perspective, ideas or opinions.
In this context, we can infer and logically deduce that a persuasive technique which the author used to convince the audience that this science fiction novel is high quality is imagery to create ethos.
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Answer:
i think its "D"
Explanation:
yw!
A community is the interaction of different populations of living things true or false
Answer:
True
Explanation:
Communities can include different species also.
What is source water?
largest body of water in an area
body of water which drains used water
body of water which is far away from an area
body of water which supplies drinking water
Which of the following describes a way to recover items and use them for energy?
I. Use biofuel or biogas when available for vehicles.
II. Use recovered biomass when appropriate.
III. Reuse plastic or cotton bags for shopping.
II only
I and II
I and III
I, II, and III
I and III are the correct options that describes a way to recover items and use them for energy.
Which of the following describes a way to recover items and use them for energy?Use biofuel or biogas when available for vehicles and reuse plastic or cotton bags for shopping for use of energy instead of fossil fuels. Recycling of waste materials is a good way to reduce production cost as well as reduce pollution in the environment.
So we can conclude that I and III are the correct options that describes a way to recover items and use them for energy.
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One of the ways which describes a way to recover items and use them for energy is the using recovered biomass when appropriate.
What is biomass energy?Biomass energy can simply be defined as that energy which is generated or synthesized by living things or once living things
So therefore, one of the ways which describes a way to recover items and use them for energy is the using recovered biomass when appropriate.
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. How are taigas being impacted by global climate change?
The area where trees grow is shifting.
Invasive species are destroying plants.
Less water is available.
Glaciers are melting.
Taigas are in danger as a result of climate change in various ways. The frozen layer below earths surface is partially melting as a result of the warming environment.
More of the taiga is being occupied by muskegs as a result of this water's lack of a drainage system.Deforestation brought on by logging and clear-cutting poses the biggest threat to the taiga. Timber is obtained using these techniques for the production of wood and paper goods. In order to build cities, forests are also destroyed, which might fragment habitats.In boreal coniferous forests, more forest fires are occurring more frequently as a result of global warming. This implies that deciduous trees, which often only show up as pioneer species, may eventually come to dominate the landscape.learn more about taigas here:
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Drag the tiles to the correct boxes to complete the pairs.
Match each step of the scientific method with its description. see image ...........................................
Making observations: Bread, when kept in the open for a long time, shows the presence of mold
Asking questions: What causes mold growth on bread?
Constructing hypotheses: Changes in temperature may affect the growth of mold on bread
Testing hypothesis: Keep the bread in different locations, changing the temperature at each location
Result analysis and conclusion: Increased temperature leads to mold growth on bread
Result communication: Make a presentation of the data and explain it to the class.
Scientific methodThe scientific method is a rational order of steps through which scientific knowledge is obtained. The steps are:
Making observationsAsking questionsConstructing hypothesesTesting hypothesisResult analysis and conclusionResult communicationObservations have to do with making perceptions about events. Next is asking questions about why those events are the way they are.
Guesses are made to answer the questions raised. This represents the hypothesis stage.
Next is to test the correctness of the hypothesis using suitable experiments.
Results from the experiment are analyzed using relevant statistical analysis and conclusions are made from there.
The outcome of the whole procedure is then communicated to the scientific world.
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What type of body form of Cnidarians are tubular shaped and attach themselves to a firm surface?
A. polyp
B. medusa
C. nematocyst
D. spicule
The correct answer is Option A: polyp
Polyps are tubular body shapes of cnidarians that are attached to a firm surface.
What are cnidarians?Cnidaria or Coelenterata is a phylum of aquatic animals most of which are marine. Any organism under this phylum is called a cnidarian.These have special cells called cnidocytes (stinging cells) which help to capture prey.Examples of this group are the corals, jellyfish, hydra, sea anemone.Cnidarians have two types of body forms the polyp and the medusa which change during the life cycle of the animal. Some have only one type of body form throughout their life.The polyp is tubular and sessile, usually attached to a firm surface.Medusa (Jellyfish) is bell shaped and motile having tentacles hanging out at the margins.Spicules are sharp needle like shapes embedded in the sponges which help in defense.Nematocysts are large organelles produced as a secretory vessel from Golgi within cells called nematocyte in cnidarians.Learn more about polyp and medusa here:
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If you observed that the Sun did not set during an entire 24-hour period of time during the summer months of June, July, and August, where are you most likely located?
South Pole
a location in the mid-latitudes
North Pole
near the Equator
Sun did not set during an entire 24-hour period of time during the summer months of June, July, and August, you are most likely located at the North pole.
The sun does not set above this latitude during the summer because of the Arctic Circle Phenomenon. The Arctic Circle is a fictitious boundary. The Arctic Circle's North Pole experiences extended periods of continuous sunshine, mostly in the months of June, July, and August. The reason for this is that Earth's axis is slanted by 23 degrees, and during the summer months when it rotates, the North Pole aligns with our star. For instance, the farthest reaches of Norway.That is why during the summer months of June, July, and August, the Sun did not set for a full 24 hours.
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If the DNA sequence is CCAATTGA, what is the compliment?
GGTTAACT is the complement of DNA sequence CCAATTGA.
What is a complement sequence of DNA?A sequence of bases in a nucleic acid called a complementary sequence can be used to match base pairs to create a double-stranded structure. For instance, G-T-A-C is the complementary sequence to C-A-T-G, where each letter represents a different DNA nucleotide.
Every DNA sequence has a counterpart sequence running in parallel since DNA has two strands. Adenine (A) is always coupled with Thymine (T) in the complementary sequence, while Cytosine (C) is always paired with Guanine (G).
Natural complementary DNA plays a crucial role in the production of new DNA copies and has emerged as a key experimental tool. The two strands of DNA are unraveled from one another during replication. Each strand is replicated twice, one by a DNA polymerase molecule that runs the length of each strand.
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You have a pea plant with a yellow pea phenotype but do not know if the genotype is homozygous (YY) or heterozygous (Yy). What type of cross would you do determine the genotype of this plant and what would be the predicted phenotypes of the offspring?
A test cross must be performed to ascertain this plant's genotype. Yellow and green peas are the anticipated phenotypes of the progeny.
What is a test -cross?To ascertain whether a progeny is homozygous or heterozygous for a given trait, an F1 progeny is crossed with a double (homozygous) recessive parental progeny (green pea). This is referred to as a test cross.
All of the hybrid's offspring will exhibit the dominant (yellow) phenotype if the mother is homozygous (YY) dominant.
Mother yellow pea (YY) x green pea (yy) - P generation
Y y - Gamete
Yy (yellow) , Yy (yellow) -F1 generation
If the mother is heterozygous dominant(Yy), then half of the offspring will exhibit the dominant phenotype and the other half will exhibit the recessive phenotype and the ratio should be 1:1.
Mother yellow pea (Yy) x green pea (yy) -P generation
Y, y y - Gamete
Yy (yellow) , yy (green) -F1 generation
Therefore, it is concluded from the above explanation that we have to perform a test-cross to know the genotype of the pea plant.
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We can educate people from the ecological footprint that the 3 main factors of the footprint are transportation, housing and food decisions.
To educate the people, you can start by following some simple steps to reduce your own ecological footprint. We can improve the way we live, what we buy, and how we participate in the community to reduce greenhouse emissions.
What is an ecological footprint?The Ecological Footprint measures how fast we consume resources and generate waste compared to how fast nature can absorb our waste and generate resources.It is the impact a person or community has on the environment, expressed as the amount of land required to sustain their use of natural resources. To reduce ecological footprint we must reduce our personal emissions and press the government to make laws to ensure that larger emitters do the same.Certain sustainable practices (like recycling, paper vs. plastic, paper towels vs. cloth) do not have an extremely significant effect in reducing the ecological footprint.The 3 main factors of the footprint are transportation, housing and food decisions.Follow some of these steps to reduce your ecological footprint
Incorporate walking to some of your regular short-trip destinations.Reduce use of Single-Use, Disposable Plastics. Switch off lights and unplug devices when you're not using them. Eat more food that is made locally and less meat. A great place to start is by shopping at your local farmer’s market. The meat industry is a major source of greenhouse gas emissions.Use alternative transportation (bus, train, carpool, or bike) to get to work one day per week.Switch to Renewable Energy.When considering factors like food, water-use, waste and transportation, there is an urgent need for these sustainable daily actions.
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