The lens of the eye is naturally spherical and is flattened by ligaments to change focus.
The lens of the eye is a clear, transparent structure that plays a crucial role in vision by focusing light onto the retina. The lens is naturally spherical in shape, but in order to change focus, it needs to be flattened. This is achieved through the action of the ciliary muscle and suspensory ligaments that are attached to the lens.
When the ciliary muscle contracts, the suspensory ligaments relax, which allows the lens to become more spherical and focus on objects that are close up.
Conversely, when the ciliary muscle relaxes, the suspensory ligaments become taut, which flattens the lens and allows it to focus on objects that are far away.
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Prior to any modifications in an eukaryote, a transcribed RNA can be called Choose the TWO correct answers.
O siRNA
O tRNA
O rRNA
O mRNA
O hnRNA
O pre-mRNA
O IncRNA
O sחRNA
Prior to any modifications in an eukaryote, a transcribed RNA can be called hnRNA and pre-mRNA.
What is eukaryote ?
A eukaryote is a type of organism that has a nucleus and other membrane-bound organelles.
Therefore, Prior to any modifications in an eukaryote, a transcribed RNA can be called hnRNA and pre-mRNA.
hnRNA stands for heterogeneous nuclear RNA. It is the initial transcript of a gene that has not yet been processed. hnRNA contains exons and introns, which are later spliced out to form mRNA.pre-mRNA stands for precursor messenger RNA. It is the processed form of hnRNA that has had the introns removed. Pre-mRNA is then exported from the nucleus to the cytoplasm, where it is translated into protein.Learn more about eukaryote here : brainly.com/question/30584795
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Which of these is the function of the large central vacuole?
Reproduction of the cell
Production of ATP
storage
Energy production
c. what percentage of each phenotype in 1b is expected if the genes for plant height and fruit skin texture are not linked (independently assorting)?
If the genes for plant height and fruit skin texture are not linked (independently assorting), the expected percentages for each phenotype in 1b are:
56.25% Tall and smoothIf the genes for plant height and fruit skin texture are not linked (independently assorting), we can expect to see a 9:3:3:1 ratio of the phenotypes in the offspring.
This means that 9/16 (56.25%) of the offspring will have both dominant traits (tall and smooth), 3/16 (18.75%) will have one dominant trait and one recessive trait (tall and rough or short and smooth), and 1/16 (6.25%) will have both recessive traits (short and rough).
Here is the breakdown of the expected percentages for each phenotype:
- Tall and smooth: 9/16 = 56.25%
- Tall and rough: 3/16 = 18.75%
- Short and smooth: 3/16 = 18.75%
- Short and rough: 1/16 = 6.25%
So, if the genes are not linked and are independently assorting, we can expect to see these percentages of each phenotype in the offspring.
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Thermophilic and vs non thermophilic emzymes. What is the differences?
Thermophilic enzymes are enzymes that can function at high temperatures, typically above 50°C, while non-thermophilic enzymes function at lower temperatures.
Thermophilic enzymes have adapted to function in high-temperature environments, such as hot springs and deep-sea hydrothermal vents.
These enzymes have unique structural features that make them stable and active at high temperatures.
They typically have a higher thermostability than non-thermophilic enzymes and can maintain their activity over a broader temperature range.
Non-thermophilic enzymes, on the other hand, are adapted to function at lower temperatures and are typically less stable at higher temperatures.
They have a narrower temperature range for optimal activity and can denature or lose activity at high temperatures.
The differences in stability and temperature range of activity between thermophilic and non-thermophilic enzymes make them useful for different applications.
Thermophilic enzymes are often used in industrial processes that require high-temperature conditions, such as in the production of biofuels and other chemicals.
Non-thermophilic enzymes are used in a variety of applications, including in the food industry and in medical diagnostics.
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Evan's playroom is 4 m by 3 m. The area of the room is:
o 7 m
07 m2
O 12 m
O 12 m2
Answer:
12 m^2
Explanation:
Area = length * width
A = 4m * 3m
A = 12 m^2
(Area is measured in square units)
Answer:
D. 12 m2
Explanation:
To do this problem, you need to find the area. To find the area of a rectangle, you multiply length x width. In this scenario:
4 x 3 = 12.
So, we know that the first two options are incorrect. Next, we have to look at the unit of measurement that we are needed to imply. In this case, we are using meters, which we need to square. Therefore, the answer is 12 m2.
Hope this helped!
when tryptophan concentrations are high in an e. colicell, what happens? a. tryptophan binds the repressor and it can repress trp operon transcription.
When tryptophan concentrations are high in an E.coli cell, d.All of the above happens,the tryptophan binds to the repressor, which is a regulatory protein that can control the transcription of the trp operon. This binding of the repressor to the tryptophan prevents the transcription of the trp operon, thus repressing gene expression.
When tryptophan concentrations are high in an E.coli cell, the repressor protein binds to tryptophan and can repress transcription of the trp operon. This is known as tryptophan-mediated repression. When this happens, the ribosomes cannot recognize the mRNA coding for the tryptophan synthesis genes, which prevents the transcription of these genes. Additionally, the trp operon can also be regulated by attenuation, which is a process of premature termination of transcription of the trp operon due to the lack of tryptophan in the cell. Therefore, all of the above is true when tryptophan concentrations are high in an E.coli cell.
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When tryptophan concentrations are high in an E.coli cell, what happens?
a. Tryptophan binds the repressor and it can repress trp operon transcription
b. Attenuation causes premature termination of transcription of the trp operon
c. The tryptophan synthesis genes are not transcribed
d. All of the above
What cell parts are found only in plant cells? What are found only in animal cells?
Cheek Cells
Elodea
Spirogyra
Chlamydomonas
Use complete sentences.
Answer:
Explanation:
cheek cells
Are fungi Producers or Consumers?
Answer:
Bacteria and fungi are actually decomposers. They eat decaying matter - dead plants and animals and in the process they break them down and decompose them.
A community can include more than one population.
True or false?
Explanation:
True
Yes it is true. A community can include more than one more population and it has to.
PLEASE HURRY IM TIMED IM GIVING ALL MY POINTS and brainly if ik how
Name the basic parts of a chemical equation, and what they represent.Name the basic parts of a chemical equation, and what they represent
The left-hand side of a chemical equation represents the reactants and the right-hand side represents the products.
A chemical reaction equation shows that starting compound is the reactants on the left and the final compound(s) is the products which is on the right, and separated by an arrow.
For a chemical reaction to be balanced number of atom on each element and total charge has to be same in both the sides . Chemical reaction is classified into three basic parts reactant , product and yield and are separated by a an arrow . Reactant are the compound that goes for a reaction and under goes chemical changes .
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Tell me about a time you had to learn a new skill that was difficult. What did you do? How was the outcome? Were you satisfied with the outcome? 5 sentences please. Easy points
Answer:
I had to learn spanish and I still am .
but one thing I did was study a lot .take a bunch of notes as well as flash cards they help a lot . I am getting more fluent so I can tell it's definitely helping.
: suppose an individual carried a dominant inherited mutation that prevented the normal successful development of myeloid stem cells. which type of blood cells would most likely be absent from this individual?
If a mutation prevents the successful development of myeloid cells then erythrocytes, monocytes, macrophages, neutrophils, basophils, eosinophils, and platelets will be absent in a person.
Hematopoiesis is a process in which all mature blood cells are formed. In vertebrates (including humans) this process usually takes place in the bone marrow. All blood cells are developed from hematopoietic stem cells. These cells give rise to two different cell lines myeloid and lymphoid.
Myeloid cell lines give rise to erythrocytes, monocytes, macrophages, neutrophils, basophils, eosinophils, and platelets. Hence the absence of myeloid cells prevents the development of the cells mentioned above. Lymphoid cell lines give rise to T-cells, B-cell, and natural killer cells.
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Which statement explains something that the fossil record indicates? Earth is 4.5 billion years old. Mammals have always existed on Earth. Mass extinctions have occurred several times on Earth. The amount of water on Earth has decreased over time.
Answer:
C.) Mass extinctions have occurred several times on Earth.
Explanation:
I Just Took The Fossil Quiz On Edge
The statements that have been indicated from the fossil record are statement 1, 2, 4, and 5 i.e., Earth is 4.5 billion years old. Mass extinctions have occurred several times on Earth. The amount of water on Earth has decreased over time.
What are fossil records?The remnants or indentations of organisms from prior geologic time retained in sedimentary rock constitute the fossil record.
The fossil record is insufficient. Only a low percentage of the life forms preserved as fossils have been managed to recover and studied by paleontologists. In some cases, the evolution of aspects over time has been meticulously renovated. The evolution of the horse is one example.
The following statements have been derived from the fossil record: The Earth has been around for 4.5 billion years. On Earth, mass extinctions have occurred several times. Over time, the amount of water on Earth has decreased.
Thus, the correct options are 1, 2, 4, and 5.
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Your question seems incomplete, the probable complete question can be:
Which statements explain what the fossil record indicates? Check all that apply.
1. Earth is 4.5 billion years old.
2. Many organisms have become extinct.
3. Mammals have always existed on Earth.
4. Mass extinctions have occurred several times on Earth.
5. The amount of water on Earth has decreased over time.
distinguish between glucose and amino acid
Fill in the missing bases in the following picture:
Answer:
1: G to C
2: C to G
3: T to A
4: G to C
5: T to A
Explanation:
look at number 1 and number 4, they have the same box. Along with 3 and 4 they have the same arrow.
Why was Wegener’s theory of continental drift almost completely discarded?
1. It didn’t have a mechanism for how drift occurred.
2. It wasn’t supported by fossil evidence.
3. It didn’t explain how continents fit together.
4. It didn’t explain how mountains formed.
Answer:
1. It didn’t have a mechanism for how drift occurred.
Explanation:
He couldn't explain the mechanism behind the movement of the Earth's continents.
When organisms struggle to survive they usually mutate to increase chances of reproduction
Phenotypes are essentially the physical characteristics that an organism possesses that make it more likely than not that it would thrive in a given environment.
What are the statements are true?The following assertions are accurate:
1. Survival is a race that all species must win.
3. Some species possess traits that enable them to outcompete rivals in their environment.
5. Natural selection is still in action today.
6. Over the course of multiple generations, phenotypes that are present in a species' most successful individuals grow more common.
It should be remembered that creatures compete with one another for existence in the natural world. Some people have superior phenotypes to others.Phenotypes are essentially the physical characteristics that an organism possesses that make it more likely than not that it would thrive in a given environment.The complete question is Check all statements below that are true. All organisms must compete for survival. When organisms struggle to survive, they usually mutate to increase chances of reproduction. Some organisms have phenotypes that make them better competitors than others in their environment. Animals undergo natural selection, but plants and other organisms generally do not. Natural selection continues to occur even today. Phenotypes found in the most successful members of a species become the most prevalent after several generations. A decrease in food availability will increase the variation in a population.
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Once you print, cut all the pieces apart. Then reassemble the puzzle so the the definition backs up with the card that has the term. So if one card says: double helix, the card that matches with it would say: the shape of DNA.
DNA replication is the process through which DNA duplicates. It occurs in the interphase and involves different enzymes, DNA molecules, and free nucleotides. Terms and definitions in the attached files.
What is DNA replication?
DNA replication is the process through which DNI molecule duplicates. This event takes place during the S stage of the interphase. So when the cell divides during mitosis or meiosis, each cell will get a complete set of chromosomes.
DNI replication is semi-conservative because each new molecule carries an original DNI strand and a new one. The fact that the new molecule is composed of an original strand makes it semi-conservative. The old existing strands are used to synthesize the new complementary strand.
The origin of the replication requires helicase enzymes to break hydrogen bonds and separate the two original strands. The topoisomerase enzyme is necessary to release tension. Other proteins are also needed to join the strains and keep them separated. Once the molecule is opened, there is a region named replication forks. DNA polymerase makes the new nucleotides enter into the fork and pairs them with the corresponding nucleotide of the original strand. Adenine pairs timine, and cytosine pairs guanine.
DNA strands are antiparallel, and replication occurs only in 5'-3' direction. So one of the strands will replicate continuously, while the other strain will be formed by short fragments known as Okazaki fragments.
Primers are needed to make the DNA polymerase work. Primers are small units of RNA and are placed at the beginning of each new fragment.
In the attached files you will find the terms and their definitions.
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Which is bigger: Trypansoma or a Red Blood Cell (RBC)? Trypansoma is slightly longer than a red blood cell (i.e. 1.5−2.5x in length). A red blood cell is slightly longer than Trypansoma (i.e. 1.5−2.5x in length). A red blood cell is much larger than Trypansoma (at least 4x greater in diameter). Trypansoma is much larger than a red blood cell (at least 4× greater in diameter).
Trypansoma is slightly longer than a red blood cell (1.5−2.5x in length) (Option 2). It implies that the size of Trypansoma exceeds the length of a red blood cell, but not significantly.
Trypansoma, a parasitic protozoan, is slightly longer than a red blood cell. The length comparison states that Trypansoma is 1.5−2.5 times longer than a red blood cell. However, it's important to note that size can vary depending on the specific species or strain of Trypansoma and the individual variation within red blood cells. Overall, this information provides a relative understanding of the size difference between Trypansoma and red blood cells, indicating that Trypansoma is slightly larger in terms of length compared to a red blood cell (Option 2).
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Review the chart, which shows the population sizes of three African animals in 1990 and 2000.
Answer:
lion and cheetah populations compete for the food source of zebras ,and lions outcome cheetahs
Enzymes are type of Carbohydrates that help chemical processes happen in cells.true or false
Answer:
Enzymes are type of Carbohydrates that help chemical processes happen in cells.true or false
Saye dari Malaysia Each diamond-shaped segment of a liverwort thallus contains a single
A. pore.
B. pair of guard cells.
C. chloroplast.
D. starch grain.
E. hydathode.
Each diamond-shaped segment of a liverwort thallus contains a single (A).pore
Like other primitive flowers, liverworts are not nicely adapted to dry situations, so that they develop wherein the soil is moist and humidity excessive. Pores inside the uppermost cellular layer permit moisture into the cells, and that they near as the thallus dries out, but there's no energetic ultimate and opening like the stomata of better vegetation.
A liverwort is a flowerless, spore-producing plant - with the spores produced in small capsules.
Spores are released while the sporangium ruptures, marking the beginning of a new gametophytic generation. maximum liverworts can reproduce asexually with the aid of gemmae, which can be disks of tissues produced by the gametophytic generation. The gemmae are held in unique organs called gemma cups and are dispersed by way of rainfall.
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25 POINTSSSS!!!!!
In which system of plant do the tissues xylem and phloem work?
In vascular system of plant do the tissues xylem and phloem work
What is the function of cilia in the respiratory system? A. Move gases into the blood. B. Move food into the stomach. C. Move mucus into the throat. D. Move air into the lungs
Answer:
C or B sorry if I didn't help you
Explanation:
have a great day buddy
Rocks and Minerals as Resources Lab Activity
Reflection Questions:
1. Describe the ways mining in the real world can affect society, ecosystems, and the environment of a specific region.
2. Using your answers to the question above, list the criteria you believe should be addressed by land reclamation. Prioritize your criteria by order of importance. Explain the order you selected for your criteria.
3. Complete reclamation of mined land is the solution you practiced in this cookie mining lab. What reasoning supports this solution as one that will provide the largest benefits and least costs to society and the environment?
4. Legislation requiring the reclamation of the land makes mining more expensive. How important is this constraint to achieving complete reclamation of mined land?
5. Were the minerals evenly distributed throughout the cookie mines? In the real world, how important is this constraint (distribution of mineral ore) to achieving complete reclamation of mined land?
6. Were you able to restore the land exactly as it was prior to mining? In your experience, would reclamation of mined land be able to restore and stabilize the natural system of the region?
Refining Design
1. How would you refine your mining techniques in this activity in order to maximize reclamation? Be sure to include proposed changes in costs, safety, and restoration of the area.
2. Predict how your refined mining techniques could affect the social and environmental stability of the region.
Mining is the birth of minerals and other geological accouterments of profitable value from deposits on the Earth.
Mining negatively affects the terrain by converting loss of biodiversity, soil corrosion, and impurity of face water, groundwater, and soil. Mining can also spark the conformation of holes. The leakage of chemicals from mining spots can also have mischievous goods on the health of the population living at or around the mining point.In some countries, hidden-trapping companies are anticipated to cleave to recuperation and environmental canons to ensure that the area hidden-trapped is ultimately converted back into its original state. still, violations of similar rules are relatively common.Loss Of Biodiversity
frequently, the worst goods of mining conditioning are observed after the mining process has desisted. The destruction or drastic revision of the pre-mined geography can have a disastrous impact on the biodiversity of that area. Mining leads to a massive niche loss for a diversity of foliage and fauna ranging from soil microorganisms to large mammals. Aboriginal species are most oppressively affected since indeed the fewest dislocations in their niche can affect extermination or put them at high threat of being wiped out. poisons released through mining can wipe out entire populations of sensitive species.legislation related to mining-
There are different kinds of legislation. The legislation that needs land to be restored after mining tends to make mining to be veritably precious as it does so through the duty of some rules and regulations for the hidden-trapping companies.Through this, it handles the responsibility of their land declination and takes back the land to its original form. This process is known to contribute to the fiscal counteraccusations of a company.Why is it important to take land after mining?
Mining is known to be an act that disturbs the land. A lot of mines now are been known to reclaim the face in the course and after mining is completed, and therefore they return the land for useful purposes.
Reclaimed mine lands are known to be veritably beautiful and useful to wildlife and mortal uses.
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sutures have a little movement??
Sutures have limited mobility or slight movement within their range.
The borders of a wound or incision are frequently held together during medical operations using sutures, also known as stitches. Sutures do permit some movement, despite being designed to hold the tissues in place and encourage healing.
This slight movement is intentional and serves a few purposes. Firstly, it accommodates the natural movements of the body without placing excessive tension on the wound, which can hinder healing. Secondly, it allows for drainage of fluids and minimizes the risk of fluid accumulation.
Lastly, the slight movement of sutures assists in reducing scar formation by distributing tension along the incision line. However, it is important to note that excessive movement or tension on sutures can compromise wound healing and should be avoided.
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Farmer Joe wants to reduce water pollution from his farm. Select ALL of the methods below that would help him reach this goal.
1.Use biological controls
2.compost
3.Use organic fertiliser
4.Make biogas
Answer: 4. 3.
Explanation:
The DNA sequence shown below comes from part of the TP53 gene. It encodes the last amino acids of the p53 protein, which is normally 393 amino acids long. The underlined codon indicates the correct reading frame of this gene. The lower strand of the gene is used as the template during the transcription of mRNA from this gene....TTCAAGACAGAAGGGCCTGACTCAGACTGACATTCTCC-3'...AAGTTCTGTCTTCCCGGACTGAGTCTGACTGTAAGAGG-5'A mutation that changes the nucleotide at position 25 from G to C results in which of the following:
As per the given DNA sequence shown below comes from part of the TP53 gene, the nucleotide at position 25 from G to C mutation results in missense. Option B is correct .
A missense mutation is when a single nucleotide change in the DNA sequence results in a codon that codes for a different amino acid, potentially altering the protein function.
A missense mutation is a kind of point mutation that leads to the substitution of a different amino acid residue instead of the original amino acid residue in the resulting protein. It occurs when the DNA sequence of a gene is altered in such a manner that a nucleotide is changed, resulting in the production of a protein that has a different amino acid at a specific position. This mutation results in the production of an altered protein. Thus, a missense mutation is a type of point mutation that alters a single nucleotide within a DNA sequence, resulting in a change to a different amino acid in the protein sequence
Therefore, the given mutation that changes the nucleotide at position 25 from G to C results in missense mutation. In this case, the boxed nucleotide changes from C to A, resulting in a different codon that codes for a different amino acid. Therefore, the correct answer is B. Missense.
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The DNA sequence shown below comes from part of the TP53 gene. It encodes the last amino acids of the p53 protein, which is normally 393 amino acids long. The underlined codon indicates the correct reading frame of this gene. The lower strand of the gene is used as the template during the transcription of mRNA from this gene....TTCAAGACAGAAGGGCCTGACTCAGACTGACATTCTCC-3'...AAGTTCTGTCTTCCCGGACTGAGTCTGACTGTAAGAGG-5'A mutation that changes the nucleotide at position 25 from G to C results in which of the following: Consider a mutation that changes the boxed nucleotide from C to
A. What kind of mutation is this?
B. Missense AUEACAADS
C. Nonsense
D. Frameshift
E. Non-coding AUGT Met AG
Which of the following cells is formed by meiosis?
O A. A fertilized egg
O B. A sperm cell
O C. A heart cell
O D. A bacterial cell
Answer:
B. A sperm cell
Explanation:
Meiosis creates gametes/sex cells, such as the sperm and egg.
So, sperm cells are formed by meiosis.
Meiosis doesn't create fertilized eggs, it instead creates normal egg cells.
Meiosis also doesn't create heart and bacterial cells because those are made in mitosis.
So, B is the correct answer.
Freshwater leeches attach to fish and suck blood from the fish for extended periods of time. This results in sores on the fish that often become infected.
This relationship is best described as
Answer:parasitism
Explanation:
the leeches benefit but cause the fish harm I’m not sure if this is the type of answer you needed hopefully it helps
Answer:
It's called Parasitism. As these leeches live outside the fish body so they are Ectoparasites.