An organ is defined as any anatomical structure with discernible structural boundaries, at least two distinct tissue types, and a distinct function distinct from the structures around it.
What do we mean by tissue?Simply put, tissues are groups of cells that have a similar shape and function. They form a cellular organisational level between cells and organ systems.
The four basic types of tissue are connective tissue, epithelial tissue, muscle tissue, and nervous tissue. Connective tissue holds other tissues together and supports them (bone, blood, and lymph tissues). Epithelial tissue serves as a covering (skin, the linings of the various passages inside the body). The Old French word tissu, which means "a ribbon, belt, or piece of woven material," is where the noun tissue originates. As a verb, "weave fabric strands" is what tissue means. Tissues are now thought of as disposable paper used for wrapping gifts or blowing our noses.
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1. Distinguish between the cell wall and the
cell membrane in a plant cell.
An abnormal enlargement of the spleen that can develop from infections is called ____.
An abnormal enlargement of the spleen that can develop from infections is called splenomegaly.
Infections, such as mononucleosis, are among the most common causes of splenomegaly. Liver problems such as cirrhosis and cystic fibrosis, can also cause an enlarged spleen.
Another possible cause of splenomegaly is juvenile rheumatoid arthritis. This condition can cause inflammation of the lymph system.
An enlarged spleen causes serious complications or the cause can't be identified or treated, surgery to remove your spleen (splenectomy) might be an option. In chronic or critical cases, surgery might offer the best hope for recovery. Elective spleen removal requires careful consideration.
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The process that produces the chromosome abnormality represented in the given diagram is known as-
Answer:
Trisomy at the 21 chromosome
Explanation:
due to aneuploidy which is a form of genome mutation.
Even in aneuploidy, it is polysomy which is the presence of extra chromosomes.
Answer:
21
.......................
i can make my own food sometimes i also eat food i can have one or two parents my cells have an organized.nucleus i am usually madenof only one cell but sometiems i am made of many cells.what domain and kingdom am.i
Answer:
Fungi
My cells have an organized nucleus. I am usually made of many cells, but sometimes I can be single celled. I cannot make my own food, so I must eat. I can have one or two parents.
Protista
I can make my own food, but sometimes I also eat food. I can have one or two parents. My cells have an organized nucleus. I am usually made of only one cell, but sometimes I am made of many cells.
Archaebacteria
I am only made of one cell. My cell does not have an organized nucleus. I only have one parent. Sometimes I make my own food, but other times I eat food. I like to live in volcano vents, salt water of deep oceans, or the freezing cold arctic.
Eubacteria
I can make my own food, but sometimes I eat food. I am single celled, and I only have one parent. My cell does not have an organized nucleus. Sometimes I cause diseases. Other times I am a decomposer.
Explanation:
Hope this helps.
The flattened sacks of membrane typical of the Golgi apparatus are especially abundant in: ________
The flattened sacks of membrane typical of the Golgi apparatus are especially abundant in cells that are involved in secretion, such as glandular cells and cells of the digestive system.
The flattened sacks of membrane typical of the Golgi apparatus are especially abundant in cells that are involved in secretion, such as glandular cells and cells of the digestive system. These cells have a high demand for the processing, modification, and packaging of proteins and lipids, which are carried out by the Golgi apparatus. The Golgi apparatus plays a key role in the sorting and directing of these molecules to their final destinations, such as the cell membrane or extracellular space, through the use of its stacked and flattened membrane structures.
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The estimated percentage of cancers that are due to poor diet and lifestyle habits is approximately Group of answer choices3/41/21/31/4
Solution:
A large body of literature indicates that 30% to 40% of all cancer cases are related to poor dietary or lifestyle habits.
That is equivalent to 1/3.
So that the correct answer is:
1/3
effect of sound pollution in points in 4 points
That question got me thrown off
Answer:
Dominant
Explanation:
If both of the parents don't express the trait and the child does, then the pedigree is recessive. According to Mendel's law, the recessive trait will only show if there are two recessive alleles. If both of the parents of have the trait and their child does, that means that the parents are heterozygous.
If one of the parents have the trait and the child does or doesn't, then the pedigree is dominant.
What is the name of the structure that suspends the small bowel?
The structure that suspends the small bowel is called the mesentery. The mesentery is a double-layered sheet of tissue that attaches the small intestine to the posterior abdominal wall.
It is situated between the parietal peritoneum and the transverse mesocolon. It is made up of a parietal peritoneum inner layer and a visceral peritoneum outer layer.
The mesentery is required to provide the small intestine with lymphatic and blood vessels. It also has nerves that aid in regulating how the small intestine moves.
The mesentery also keeps the small intestine from twisting or kinking while holding it in position.
Moreover, it aids in stabilising the small intestine against the posterior abdominal wall and stops it from shifting during abdominal motion. In addition, the mesentery aids in the fluid's exit from the small intestine.
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Allen's and bergmann's rules are perfect examples of natural selection working to bring about anatomical adaptations to different environments. these include:______.
Allen's and bergmann's rules are perfect examples of natural selection which include the limb and trunk proportions of Neandertals.
According to Bergmann's rule, creatures at higher latitudes should be larger and thicker than those closer to the equator to better preserve heat, and according to Allen's rule, those at higher latitudes will have limbs that are shorter and thicker.
Latitudinal size clines can also be explained by seasonality and plant productivity. With endotherms, the rules typically apply, although in insects, various species within the same genus can react to latitude in unexpected ways.
Therefore, Allen's and bergmann's rules are perfect examples of natural selection which include the limb and trunk proportions of Neandertals.
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identify the ways in which the anterior pituitary differs from the posterior pituitary. check all that apply. A. The anterior pituitary is also known as the adenohypophysis. B. The posterior pituitary secretes gonadotropins. C. The anterior pituitary is stimulated by the hypothalamus via hormones that travel through the hypophyseal portal system. D. Oxytocin is secreted by the anterior pituitary.
E. Cell bodies in the hypothalamus synthesize hormones that pass down the hypothalamo-hypophyseal tract and are stored in the posterior pituitary.
The ways in which the anterior pituitary differs from the posterior pituitary are as follows:
The anterior pituitary is also known as the adenohypophysis.The posterior pituitary secretes gonadotropins.The anterior pituitary is stimulated by the hypothalamus via hormones that travel through the hypophyseal portal system.The correct option are A, B, and C.
What is the function of the anterior pituitary?The anterior pituitary is one of the pituitary gland's two lobes and is commonly known as the adenohypophysis.
Hormone production and release occur in the anterior lobe. Hormones are released into the bloodstream by the posterior lobe, which does not generate them directly; nerve cells in the hypothalamus are responsible for this.
The anterior pituitary controls a number of physiological functions, such as stress, growth, reproduction, and lactation.
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For each of the genotypes below determine what phenotypes would be possible.
Purple flowers are dominant to white flowers.
PP __________________
Pp __________________
pp __________________
Round seeds are dominant to wrinkled seeds.
RR __________________
Rr __________________
rr __________________
Brown eyes are dominant to blue eyes
BB ________________
Bb ________________
bb ________________
Bobtails in cats are recessive.
TT _________________
Tt _________________
tt __________________
3. For each phenotype below, list the genotypes (remember to use the letter of the dominant trait)
Straight hair is dominant to curly.
____ straight
____ straight
____ curly
Pointed heads are dominant to round heads.
_____ pointed
_____ pointed
_____ round
Given that the following genotypes are to be determined for the phenotypes provided below:
Purple flowers are dominant to white flowers.PP:
Homozygous dominant - all the offspring would have purple flowers.Pp:
Heterozygous - 50% of the offspring would have purple flowers while 50% would have white flowers.pp:
Homozygous recessive - all the offspring would have white flowers.Round seeds are dominant to wrinkled seeds.RR:
Homozygous dominant - all the offspring would have round seeds.Rr:
Heterozygous - 50% of the offspring would have round seeds while 50% would have wrinkled seeds.rr:
Homozygous recessive - all the offspring would have wrinkled seeds.Brown eyes are dominant to blue eyes.BB:
Homozygous dominant - all the offspring would have brown eyes.Bb:
Heterozygous - 50% of the offspring would have brown eyes while 50% would have blue eyes.bb:
Homozygous recessive - all the offspring would have blue eyes.Bobtails in cats are recessive.TT:
Homozygous dominant - all the offspring would not have bobtails.Tt:
Heterozygous - 50% of the offspring would not have bobtails while 50% would have bobtails.tt:
Homozygous recessive - all the offspring would have bobtails.Straight hair is dominant to curly.Straight: homozygous dominant (SS) or heterozygous (Ss).Curly:
homozygous recessive (ss).Pointed heads are dominant to round heads.Pointed:
homozygous dominant (PP) or heterozygous (Pp).Round: homozygous recessive (pp).About HomozygousHomozygous is one of the genotype conditions. Homozygous individuals have chromosomes with the same alleles at each gene locus. Loci with homozygous genotypes have the same alleles.
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Describe at least 2 ways HeLa cells are going to be used in the future. Either a study
currently underway or in development.
Answer:The enduring use of HeLa cells in biomedical research is represented below through a timeline of events and scientific publications that describe research using HeLa cells.
Explanation:
Neurons are companents of the norvous systom of the body that transmit signals as electrical inpuses travel Part A along their langth. These impuises propagate when charge suddeny rushes into and then out of a part of the How many coulombs of charge enter a 2.1 cm length of the axon during this process? neutron called an axon, Measurements have shown that, during the inflow part of this cycle, approximately. Express your answer in nanocoulombs. 5.6×10
11
Na (sodium ions) per meter, each with charge te, erteer the axon. Two equal point charges of +3.20×10
−4
C are placed Part A 0.185 in apart. What is the magritude of the force each charge exerts on the other? Express your answer in newtons. Part B Is the force attractive or regulsive?
1.88 nano coulombs of charge enter a 2.1 cm length of the axon during this process.
From the given statement, it can be stated that during the inflow part of this cycle, approximately 5.6 × 10¹¹ Na (sodium ions) per meter, each with charge e, enter the axon. To find the amount of charge entering a 2.1 cm length of the axon, we need to convert the length into meters.
1 cm = 10^-2m
2.1cm = 2.1 × 10^-2m
Now, charge on each ion = e = 1.6 × 10^-19C
The total number of ions that enter the 2.1 cm length of the axon
= 5.6 × 10¹¹ ions/m × 2.1 × 10^-2 m= 1.176 × 10^10 ions
The total charge that enters the axon = Total number of ions × charge on each ion
= 1.176 × 10^10 ions × 1.6 × 10^-19C/ion
= 1.8816 × 10^-9C ≈ 1.88 n C
= 1.88 × 10^3 n C (in nanocoulombs
Therefore, 1.88 nano coulombs of charge enter a 2.1 cm length of the axon during this process.
Part A: We are given the charges of two equal point charges and we are to calculate the magnitude of force each charge exerts on the other and whether the force is attractive or repulsive. The magnitude of the force between two point charges q1 and q2 separated by a distance r is given by Coulomb's law:
F = k(q1 q2 /r²),
where k = 9 × 10^9 Nm²/C² is Coulomb's constant.
Given that two charges are equal and have a value of +3.20 × 10^-4 C.
The distance between the charges is given as 0.185 in, which is equal to 0.004699 m (since 1 inch = 0.0254 m).
Plugging these values in the formula, we get:
F = kq1 q2 /r²
F = (9 × 10^9 Nm²/C²) × (+3.20 × 10^-4 C) ² / (0.004699 m) ²
F = 2.28 × 10^-2 N
The magnitude of the force exerted by each charge on the other is 2.28 × 10^-2 N.
Part B: The charges are both positive and of the same sign, therefore the force between them is repulsive.
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I need help with this practice In your own words, give a general description of the species: Blue Jay Please,(If you use any words that are not your own, please reword it to your own words) as I would like you to explain it
The Cyanocytta crystal commonly known as a Blue jay is native of eastern North America, it lives in deciduous and coniferous forests, though can be found in certain urban areas. It feeds mostly on seeds, sometimes even stockpile generating seed banks, or on rare occasions can feed on small invertebrates and vertebrates si can be considered as mainly a primary consumer.
black (b) involved in the synthesis of melanin in labrador dogs is dominant over brown (b). a separate allele (e) is responsible for deposition of the pigment in the hair. two recessive alleles (ee) result in failure of deposition and a lab with yellow fur will result. if you cross a homozygous black male (bb ee) with a homozygous yellow female (bb ee) what will be the f1 and f2 (use the punnet square for the f2 cross) genotypes and phenotypic ratios? note the phenotype for each genotype.
The pigmentation of the hair is deposited by a different allele (E). A lab with yellow results when twin recessive alleles (ee) are present. The two alleles of this gene are B and b.
Black is a gene that affects coat colour in Labrador retrievers, and it plays a role in coat colour. The two alleles of this gene are B and b. The extension gene is yet another one that affects coat colour. Additionally, this gene has two alleles, E and e. The genotype of two genes determine the coat colour of Labrador dogs. A dominant allele, B, of one gene results in black fur, while the alternative allele, b, results in brown fur. However, irrespective of the genotypes of the first gene, a dog will have yellow fur if a second gene has two recessive alleles, ee. The complementation test, also known as the cis-trans test, is a genetic analysis used to determine if two mutations linked to a certain trait represent two distinct gene types.
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The pigmentation of the hair is deposited by different alleles (E). A lab result on the brown and black colour of the hair of labrador dogs was presented, when twin recessive alleles (ee) are present. The two alleles of this gene are B and b.
Black is a gene that affects coat colour in Labrador retrievers, and it plays a role in coat colour. The two alleles of this gene are B and b. The extension gene is yet another one that affects coat colour. This gene has two alleles, E and e. The genotype of two genes determines the coat colour of Labrador dogs. A dominant allele, B, of one gene results in black fur, while the alternative allele, b, results in brown fur. However, irrespective of the genotypes of the first gene, a dog will have yellow fur if a second gene has two recessive alleles, ee. The complementation test, also known as the cis-trans test, is a genetic analysis used to determine if two mutations linked to a certain trait represent two distinct gene types.
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A carbon source is anything that releases more carbon than it absorbs.
Which of the following is considered a carbon source?
Answer:
Forests can act as either carbon sources or carbon sinks. A forest is considered to be a carbon source if it releases more carbon than it absorbs.
Explanation:
it's either this or anything close to it. you didn't give me the answer choices
A carbon source releases carbon dioxide into the atmosphere. Examples of carbon sources include the burning of fossil fuels like gas, coal and oil, deforestation and volcanic eruptions.
What is considered a carbon source?
Carbon sources are any natural or artificial production site of carbon and/or any chemical compounds composed of carbon, such as carbon dioxide and methane.
What are four carbon containing sources?
Inorganic deposits of carbon in the lithosphere include fossil fuels like coal, oil, and natural gas, oil shale, and carbonate based sedimentary deposits like limestone.
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the most common way to follow bacterial transformation with a plasmid is by
The most common way to follow bacterial transformation with a plasmid is by selecting for antibiotic resistance. Plasmids often contain genes for antibiotic resistance, so after transformation, only the bacteria that have taken up the plasmid will be able to grow on media containing the antibiotic. This allows for easy identification and selection of transformed cells.
When conducting bacterial transformation experiments, researchers often use plasmids that carry selectable markers. These markers are genes that confer certain traits or resistance to specific antibiotics. By incorporating these selectable markers into the plasmid, scientists can easily identify and select bacteria that have successfully taken up and maintained the plasmid.
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Which best describes thermal energy?
It is the difference between internal energies of two or more substances.
It is the sum of internal energies of two or more substances.
It is the portion of internal energy that can be transferred from one substance to another.
It is the portion of potential energy that can be transferred from one substance to another.
Answer:
It is the portion of internal energy that can be transferred from one substance to another
Answer:
C.) It is the portion of internal energy that can be transferred from one substance to another.
Explanation:
E D G E N U I T Y
thermal energy: the part of total internal energy that can be transferred
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Brainliest?!?!
Describe 2 ways that carbon can get from the atmosphere to the hydrosphere
Answer:
floating up and people taking it there
Explanation:
maybe
Which phase of cell division is shown?
Exploring mitosis.
telophase I
prophase I of meiosis
anaphase II
telophase II
The image shows the phase of cell division called telophase II.
What is Telophase II?It is the last phase of mitosis, the sister chromatids separate, the chromosomes decondense, the achromatic spindle breaks down and the karyotheca, and consequently the nucleoli, reappear. With cytokinesis, in telophase I two daughter cells are formed and continue in the process of division until telophase II.
In this case, we can see in the image that the chromosomes decondense so we have telophase II.
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Ben measures the height of two bottles. One is 12 centimeters and the other is 15 centimeters. In millimeters what is the difference of the two heights
The difference in height between the two bottles is 30 millimeters.
To calculate the difference in height between the two bottles in millimeters, we need to convert the heights from centimeters to millimeters and then subtract one from the other.
First, we convert the height of the first bottle from centimeters to millimeters. Since there are 10 millimeters in a centimeter, we can multiply the height of 12 centimeters by 10 to get the height in millimeters:
12 centimeters * 10 millimeters/centimeter = 120 millimeters.
Next, we convert the height of the second bottle from centimeters to millimeters using the same conversion factor. We multiply the height of 15 centimeters by 10:
15 centimeters * 10 millimeters/centimeter = 150 millimeters.
Now that we have both heights in millimeters, we can calculate the difference. We subtract the height of the first bottle from the height of the second bottle:
150 millimeters - 120 millimeters = 30 millimeters.
Therefore, the difference in height between the two bottles is 30 millimeters.
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If 70% of the alleles in a gene pool of a population are dominant, the frequency of the
Answer:
Explanation:
The number of copies of an allele in a population divided by the total number of all alleles for that gene in a population is the allele frequency. For a gene with two alleles whose frequencies are p and q, the Hardy-Weinberg equation states that the genotypes that are possible for the population are p^2 + 2pq + q^2, which is equal to
If you run at 12 m/s for 15 s, how far will you go?
Answer:
can I have brainleis answer
Answer: 10.8 km
Explanation: S=vt = 12m/s*15*60 = 10800 m = 10.8 km
So I go 10.8 km
If cell cycle regulation is altered, what might be the consequence?
which organisms evolved photosynthsisfirst? what evidence supports that idea?
The cyanobacteria, also known as blue-green algae, are believed to have evolved photosynthesis first. This is supported by several lines of evidence such as fossil evidence and genetic evidence.
First, cyanobacteria are the only prokaryotes that perform oxygenic photosynthesis, a process by which light energy is used to convert carbon dioxide and water into organic compounds and oxygen gas.
This process is similar to the photosynthesis found in plants, which suggests that cyanobacteria were the first organisms to develop this process.
Second, the oldest known fossils of cyanobacteria are dated to be around 3.5 billion years old, which is much earlier than the evolution of eukaryotic photosynthetic organisms like algae and plants.
These fossils provide strong evidence that cyanobacteria were the first organisms to evolve photosynthesis.
Third, genetic studies have shown that the genes involved in photosynthesis in cyanobacteria are similar to those found in chloroplasts of algae and plants, which further supports the idea that cyanobacteria were the ancestors of photosynthetic eukaryotes.
Overall, the evidence suggests that cyanobacteria were the first organisms to evolve photosynthesis, and that this process played a key role in shaping the evolution of life on Earth.
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In an anole population, what are the primary changes that occur over time?
In an anole population, the primary changes that occur over time are driven by natural selection. These changes can be observed in various traits such as body size, coloration, and behavior.
For example, in response to predation pressure, anoles may evolve larger body sizes to avoid being preyed upon. Similarly, changes in coloration can occur to blend in better with their environment, providing camouflage and protection from predators. Behavioral changes can also occur, such as changes in mating rituals or territorial behaviors, which can improve the chances of survival and successful reproduction.
These changes can occur over generations as individuals with advantageous traits are more likely to survive and pass on their genes. Overall, natural selection plays a significant role in shaping an anole population over time.
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30 POINTS 30 POINTS 30 POINTS JUST ONE QUESTION BELOW TO ANSWER
In cattle (R) is codominant to white (W) fur. Roan is the name of the color that results from codominance. What are the possible results if a white male is crossed with a roan female? Make sure to give genotypic AND phenotypic ratios in your answer.
[insert colour?] = R
white = W
roan = RW
1) figure out the genotypes of the parents.
Since this a codominance problem, in order to be one colour or the other, an individual must be homo_zygous for that trait and in order to be a roan, an individual must be hetero_zygous so these will be the parent's genotypes:
male = \(WW\)
female = \(RW\)
2) produce a punnet square and solve
A cross between a homo_zygous parent and a hetero_zygous parent will produce a 2 by 1 punnet square. They can only produce two kinds of offspring and in this question, the possible results are either a white cattle or a roan cattle. Their offspring's genotypes and phenotypes are as follows:
genotypic ratios:
WW : WR
[1 : 1] or [0.50 : 0.50] or [50% : 50%]
phenotypic ratios:
white : roan
[1 : 1] or [0.50 : 0.50] or [50% : 50%]
Answer:
Gregor Mendel knew how to keep things simple. In Mendel's work on pea plants, each gene came in just two different versions, or alleles, and these alleles had a nice, clear-cut dominance relationship (with the dominant allele fully overriding the recessive allele to determine the plant's appearance
\(by \: the \: way \: your \: introduction\)
What do you know about the macronutrient transport: diffusion of nutrientes? What does this tell me about adding crickets to school lunch?
Answer:
Several school lunch professionals recently discovered the nutrients in school lunches wereinsufficient for teenagers. After much discussion they decidedcricketsshould be added toschool lunches! Needless to say, student reaction was mixed. Some thought this would helpthem meet their nutritional requirements. Others were disgusted! “Crickets, they said? Gross!”
Explanation:
Scientists have been concerned with climate changes and increase global warming. The presence of salt in the ocean's waters will alter the colligative properties of water. What physical property will change and how could this change contribute to sea level rising?
Answer:
Physical properties that contribute to the change in sea level rising are -
Eustatic sea-level changes Isostatic sea-level changes Tectonic sea-level changesExplanation: All these three physical properties contribute to sea level rising.
Eustatic sea-level changes - Global changes in sea levels are either related to changes in the volume of glacial ice on land or to changes in the shape of the sea floor caused by plate tectonic processes. Changes in the rate of mid-ocean spread, for example, will change the shape of the sea floor near the ridges, and this will affect the level of the sea. Due to glacial melting, there has been about 125 m of eustatic sea-level increase over the past 20,000 years. During the major melting process of the North American and Eurasian Ice Sheets, much of this occurred between 15,000 and 7,500 years ago.Isostatic sea-level changes - Local changes caused by crust subsidence or uplift are either due to changes in the amount of ice on the ground, or to mountain growth or erosion. At the end of the last glaciation, almost all of Canada and portions of the northern United States were covered in dense ice sheets. An isostatic rebound of the continental crust has occurred in several regions following the melting of this ice. This ranges in the central part of the Laurentide Ice Sheet (aroo) from several hundred metres of rebound.Tectonic sea-level changes - The subduction of the Juan de Fuca Plate underneath British Columbia is causing tectonic uplift (about 1 mm / year) along the western edge of Vancouver Island, but most of this uplift is likely to be reversed when the next major earthquake reaches the subduction zone.Hence, these three physical properties contribute to the change in sea level rising.