A silent mutation is a type of mutation in the genetic code where a nucleotide change in the DNA sequence does not result in a change in the corresponding amino acid sequence. To determine if a mutation is silent, we need to examine the codon and its corresponding amino acid in the genetic code table.
The genetic code table consists of codons (sequences of three nucleotides) and their corresponding amino acids. For example, the codon "GCU" codes for the amino acid alanine. A silent mutation occurs when a nucleotide substitution in the DNA sequence still codes for the same amino acid.
For instance, let's say the original DNA sequence was "GCU-GCA-GCC" (alanine-alanine-alanine), and a mutation occurred at the second position, resulting in "GCU-GCU-GCC". In this case, the mutation is silent because both "GCA" and "GCU" code for alanine. Therefore, the second mutation does not change the amino acid sequence and is considered a silent mutation.
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A team of science researchers is trying to decide which type of microscope to purchase for their laboratory. Compared to electron microscopes, a light microscope provides which of these drawbacks or disadvantages?
A. uses electricity
B. specimens cannot be alive
C. lower magnification power
D. more expensive to purchase and operate
Answer:
d
Explanation:
The drawback or disadvantage associated with the use of light microscopes over electron microscope is its lower magnification power.
LIGHT MICROSCOPE:
Light microscope is a type of microscope in which photons of light is used to view specimens. The light microscope is distinct from the electron microscope being that electron microscope uses beam of electrons instead. One advantage of light microscope is that it can view specimens alive while electron microscope can only view dead specimens. However, one disadvantage associated with the use of light microscope is that it possesses a lower magnification compared to electron microscopes.Learn more at: https://brainly.com/question/4442916
The difference between the polymerases used in translesion synthesis repair and general dna replication is?
The major difference between them is that the polymerase used in translesion synthesis has a pocket that can accommodate the lesions while DNA pol III's pocket cannot.
A polymerase is an elongated chain of enzymes and polymers.
There are two types of polymerase: RNA polymerase and DNA polymerase.
These large-sized molecules are used to assimilate RNA and DNA molecules.
By using a base-pair interaction, a strand of DNA template can be copied and this is how it replicates multiple times and forms millions of copies.
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Which of the following correctly orders the organization in plants and animals from least to most complex?
A. organism's ➔ organ systems ➔ organs ➔ tissues ➔ cells Tissues ➔
B. cells ➔ organs ➔ organisms ➔ organ systems
C. Organs ➔ tissues ➔ organisms ➔ cells ➔ organ systems
D. Cells ➔ tissues ➔ organs ➔ organ systems ➔ organisms
(science)
Answer: D
Explanation:
An index fossil represents a species that lived during
Answer:
geologic time
In the biology lab you have just finished a dissection, you should do all of the following EXCEPT: Throw all used slides in the trash, Clean the work table with a 10% bleach solution, Wrap your specimen in the original wrapping and give to your instructor to dispose of., Place used gloves and cleaning supplies in biohazard bag.
Answer:
you should have thrown the slides in a biohazard bag, so a is correcto
A point mutation that does not result in a change to the amino acid coded for is said to be a _______ mutation. a. spontaneous c. selective b. synonymous d. stabilizing
A point mutation that does not result in a change to the amino acid coded for is said to be a synonymous mutation.
What is synonymous mutation?
A synonymous mutation is a change in a protein's amino acid sequence that occurs in the DNA sequence that codes for that amino acid but does not affect the encoded amino acid. These alterations typically take place in the third position of a codon because of the genetic code's redundancy (several codons encode the same amino acid).
For instance, the codes for glycine are GGT, GGA, GGC, and GGG. The identical amino acid will be integrated into the protein sequence with any modification in the codon's third position (for example, A is replaced by G).
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what type of transport best describes when your white blood cells consume and destroy bacteria?
Answer:
phagocytosis, process by which certain living cells called phagocytes ingest or engulf other cells or particles. The phagocyte may be a free-living one-celled organism, such as an amoeba, or one of the body cells, such as a white blood cell.
A person will feel dizzy after spinning in circles for several seconds. write a four sentence paragraph that analyze the inner ear is responsible for this sensation. Be sure to include the term semicircular canals in your response.
*The ear is responsible for the sense of hearing by sensing sound waves. This organ also senses body position that keeps our balance.
*The semicircular canals inside the ear have fluid that moves whenever there is a change in head position. There are tiny hairs that line the semicircular canals and they sense the movement of the fluid. When there is a movement of the fluid, these tiny hair send nerve impulses to the vestibular nerve and these impulses are transmitted to the brain. Now, the brain interprets these impulses and sends messages to the peripheral nervous system, which maintains the balance of the body and triggers the contraction of the skeletal muscles.
Which practice is an unsustainable way of managing resources?
A. Using renewable energy resources that generate no waste
B. Using grocery bags only once before disposing of them
C. Using household appliances that consume energy efficiently
D. Recycling nonrenewable minerals instead of throwing them away
Answer:
\(\boxed {\tt B. \ Using \ grocery \ bags \ only \ once \ before \ disposing \ of \ them}\)
Explanation:
Let's analyze the answer choices. Remember we are looking for an unsustainable option.
A. Renewable energy is a great sustainable practice because it doesn't produce waste.
B. Using grocery bags once is not sustainable. Single use plastic is not good for the environment because it is used one time and then thrown out.
C. Energy efficient appliances are sustainable. They don't consume as much energy.
D. Recycling is always an environmentally friendly option. It allows some materials to be used again.
The choice that is not sustainable is B. using grocery bags only once before disposing of them.
Whales have the vestiges of a pelvis (TRUE OR FALSE)?
Answer:
True. Vestiges are simply structures that don't really serve a purpose but are leftovers from ancestors.
rob is a 30-year-old banker who has struggled with being unable to control his orgasms. he customarily ejaculates seconds after penetration. because of this problem, his relationships over the years have been strained and difficult. which of the following sexual dysfunctions is rob experiencing?
a)Premature (early) ejaculation of the following sexual dysfunctions is rob experiencing.
b)Erectile dysfunction can be brought on by physical conditions such heart disease, high cholesterol, hypertension, diabetes, obesity, and smoking.
c) issues must disturb the woman for a sexual dysfunction condition to be identified.
Rob is experiencing premature ejaculation, where he ejaculates seconds after penetration, causing strain in his relationships over the years. a form of sexual dysfunction. a) Rob is experiencing premature (early) ejaculation.
What sexual dysfunction is Rob experiencing?Rob is experiencing premature (early) ejaculation, which is a form of sexual dysfunction. Premature ejaculation is characterized by the inability to delay ejaculation during sexual activity, resulting in ejaculation occurring shortly after penetration or even before penetration.
This condition can lead to significant distress and strain on relationships, as described in Rob's case. Premature ejaculation can have various causes, including psychological factors such as anxiety, stress, or relationship issues, as well as physiological factors.
Treatment options for premature ejaculation may include behavioral techniques, such as the stop-start or squeeze technique, counseling or therapy, and in some cases, medications may be prescribed. It is important for Rob to consult with a healthcare professional to discuss his symptoms and explore appropriate treatment options for his condition.
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NEED HELP ASAP PLEASE!!
Identify the type of chemical reaction.
H 2 CO 3 H 2 O + CO 2
reversible
decomposition
synthesis
exchange
Answer:
This is a decomposition reaction, where one compound (H2CO3) breaks down into two or simpler substances (H2O and CO2).
If a protein loses the er srp signal and has a stop signal but nothing else it goes where?
The protein that does not exhibit a signal recognition peptide SRP will travel to the cell membrane (plasma membrane).
What is the signal recognition peptide?The signal recognition peptide (SRP) is a sequence of aminoacids in the proteins that allow to address them to the endoplasmic reticulum to suffer chemical modifications.
This signal (signal recognition peptide) is fundamental for achieving suitable protein processing in order to perform cellular functions.
In conclusion, the protein that does not exhibit a signal recognition peptide SRP will travel to the cell membrane (plasma membrane).
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If a protein loses the er srp signal and has a stop signal but nothing else it goes to the cytosol
What are proteins?Proteins simply refers to nitrogenous organic substances which are present in living organisms.
The signal recognition particle (SRP) is a ribonucleoprotein particle essential for the targeting of signal peptide-bearing proteins to the prokaryotic plasma membrane or the eukaryotic endoplasmic reticulum membrane for secretion or membrane insertion
So therefore, if a protein loses the er srp signal and has a stop signal but nothing else it goes to the cytosol
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The infection-fighting cells that are produced by the immune system are manufactured in specific places around the body, for example, in the lymph nodes and the spleen. However, an infection can occur anywhere in the body. How do these infection-fighting cells manage to move around the body and get to the sites of infection?
A. There are lymph nodes every few millimeters all over the body.
B. They are excreted and float freely around the body, hunting infections.
C. They are carried around the body in the circulatory system.
D. They are moved around the body as muscles squeeze against them.
Answer:b
Explanation:
two heterozygous red roses (white roses are recessive) are crossed. using a punnett square, determine what are the phenotypes for the offspring?
When two heterozygous red roses are crossed, all of the offspring will exhibit the red trait.
To determine the phenotypes of the offspring from crossing two heterozygous red roses (white roses being recessive), we can use a Punnett square.
Let's represent the red allele as "R" and the white allele as "r". Since both parent roses are heterozygous (Rr), we can create a Punnett square with the possible combinations of their alleles:
\(| R | r\)
\(R | RR | Rrr | Rr | rr\)
In the Punnett square, each box represents a possible genotype combination of the offspring. Now we can determine the phenotypes based on the genotypes:
- RR: Homozygous dominant for red allele - the phenotype is red.
- Rr: Heterozygous - the phenotype is red.
- rr: Homozygous recessive for white allele - the phenotype is white.
From the Punnett square, we can see that there are three possible genotypes: RR, Rr, and rr. Therefore, the phenotypes of the offspring will be 100% red since both the homozygous dominant genotype (RR) and the heterozygous genotype (Rr) result in the red phenotype. There will be no white phenotype (rr) in this particular cross.
In summary, all the offspring from the cross of two heterozygous red roses will have a red phenotype.
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 Explain how to make a cheek cell slide
Methods
Take a clean cotton swab and gently scrape the inside of your mouth.
Smear the cotton swab on the centre of the microscope slide for 2 to 3 seconds.
Add a drop of methylene blue solution and place a coverslip on top. ...
Remove any excess solution by allowing a paper towel to touch one side of the coverslip
which of the following features is unique to meiosis?
The unique feature of meiosis is the process of crossing over and independent assortment, which leads to genetic variation in offspring.
Meiosis is a type of cell division that occurs in sexually reproducing organisms. It involves the formation of gametes (sex cells) with half the number of chromosomes as the parent cell. The unique feature of meiosis is the process of crossing over and independent assortment, which leads to genetic variation in offspring.
During crossing over, homologous chromosomes exchange genetic material, resulting in new combinations of genes. This process occurs during prophase I of meiosis. It increases genetic diversity by creating new combinations of alleles.
Independent assortment refers to the random alignment and separation of homologous chromosomes during meiosis I. This means that each pair of homologous chromosomes can line up in different ways, leading to different combinations of chromosomes in the resulting gametes. Independent assortment further increases genetic diversity by producing offspring with unique combinations of genes.
These processes are not present in mitosis, another type of cell division that produces identical daughter cells. In mitosis, the chromosomes replicate and separate into two identical daughter cells.
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The following features is unique to meiosis is the crossing over of DNA during prophase I stage.
Meiosis and Mitosis both are cellular division processes. Mitosis and meiosis are fundamental for the multiplication of cells, substitution of dead cells, and growth and repair of tissues. However, the two types of cellular division differ in various ways. In meiosis, a homologous chromosome pair lines up with each other before segregating in the opposite directions. The crossing over of DNA occurs between homologous chromosomes during the prophase I stage of meiosis, leading to genetic variation.
This is unique to meiosis as it does not occur in mitosis. Mitosis is a cell division method in which a single cell divides into two identical daughter cells. In mitosis, crossing over does not occur. Rather, each daughter cell contains precisely the same amount of genetic information as the original cell, and all cells formed during the process of mitosis are genetically identical. This is the major difference between meiosis and mitosis. Thus, it can be concluded that the feature that is unique to meiosis is the crossing over of DNA during prophase I stage.
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For each time point, how many Petri dishes do you need? a. 1 b. 2 c. 3 d. 4 QUESTION 2 For each time point of the growth curve, how many bottles of saline do you need to create your dilutions? 1 5 3 4 How much of each of your 10e−4 and 10e−6 dilutions do you plate into the empty plates? 1ml and 2ml 1ml and 0.1ml 1ml and 10ml 1ml only
(a) For each time point, you need 1 Petri dish.
(b) For each time point of the growth curve, you need 3 bottles of saline.
(c) You plate 1ml of each of your 10e-4 and 10e-6 dilutions into the empty plates.
(a) For each time point, you only need 1 Petri dish. This suggests that the experiment involves a single sample or organism being cultured or observed at each time point. Using one Petri dish allows for the growth or observation of the organism without the need for additional replicates.
(b) For each time point of the growth curve, you need 3 bottles of saline. This indicates that the experiment involves diluting the samples in saline solution at each time point. Having 3 bottles of saline allows for creating multiple dilutions to assess different levels of concentration or dilution factors.
(c) You plate 1ml of each of your 10e-4 and 10e-6 dilutions into the empty plates. This means that a specific volume of the diluted sample is plated onto the empty plates. Plating different volumes helps in achieving varying cell densities on the plates, which may be necessary for obtaining accurate colony counts or observing specific growth patterns.
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To make organic fertilizer by composting, you should not include ________.
A) crop residues
B) dead leaves, weeds
C) animal manures
D) shredded plastic and metals
E) wood chips
To make organic fertilizer by composting, you should not include Shredded plastic and metals.
What is fertilizer?Fertilizer is a material that is added to soil to provide essential plant nutrients and improve crop yields. It is typically composed of macronutrients such as nitrogen, phosphorus, and potassium, as well as other micronutrients that are beneficial to plant growth. Fertilizers can be organic or inorganic, and they are applied to the soil in a variety of ways. Organic fertilizers are derived from plant, animal, and mineral sources, while inorganic fertilizers are composed of chemical compounds. Fertilizers are essential for both agricultural and home gardening purposes, as they provide essential nutrients to crops and plants that are not naturally present in the soil. Fertilizers help to enrich the soil and promote healthy, vigorous plant growth.
Therefore, the correct option is A.
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nformation is carried from the body's tissues and sensory receptors to the central nervous system by
Answer:
Sensory neurons carry messages from your body's tissues and sensory receptors inward to your spinal cord and brain for processing. Motor neurons carry instructions from your central nervous system outward to your body's muscles and glands.
Consider the cycle of science shown in the diagram. What would most likely cause the cycle to continue? An explanation inspires new questions and the process of making new observations. A fact inspires new questions and the process of making new observations. A careful systematic process is used in experiments to gather observations and data. A fact is established and more data is needed to convince scientists that it is true.
Answer:
The correct answer is : An explanation inspires new questions and the process of making new observations.
Explanation:
New things are being found and created in a logical field due to the "Skeptical nature of people" that is posing the inquiries.
The premise of scientific revolution is that another inquiry can be gotten from the clarification of the previous addressed scientific speculation or hypothesis as the clarifications comprises of the information got after the suspicions, perceptions and related tests. This creates novel thoughts of 'if and but situations" in the psyche which prompts the arrangement of another theory subsequently proceeding with the pattern of an a logical examination.
Hence, The correct answer is : An explanation inspires new questions and the process of making new observations.
who is up for a k a h o o t
about environmental changes?
Answer:
Sure
Explanation:
Reproductive isolation occurs when
A- some catastrophic event greatly reduces the size of the population
B- The gene pool of different populations have become very diversified
C-members of different populations can no longer meet successfully
D-small numbers of individual moves and starts in new population
Answer:
The correct answer is - C. members of different populations can no longer meet successfully.
Explanation:
Reproductive isolation is the process that occurs when two or more species or populations are not able to interbreed. The mechanisms or properties that are used to preventing individuals of separate species from mating called Reproductive isolation mechanisms.
The different barriers can cause this reproductive isolation such as different mating seasons. These barriers could be behavioral or temporal or ecological isolations.
A pet store has 4 bearded dragons and 9 geckos. What is the ratio of geckos to total reptiles?
Answer:9:13
Explanation:the total is 13 and there are 9 geckos
A pet store has 4 bearded dragons and 9 geckos. The ratio of geckos to total reptiles is - 9:13
What is ratio?The ratio is the number that may be used to represent one quantity as a percentage of another, to put it simply. A ratio's two numbers can only be compared if they share the same unit. To compare two objects, we utilise ratios. If a bowl of fruit contains five oranges and six lemons, for instance, the proportion of oranges to lemons is five to six. The proportions of oranges to the overall amount of fruit are 5:11 for oranges and 6:5 for lemons.
therefore, the total is 13 and there are 9 geckos.
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2. Which tissue makes up the husk of coconut?
Answer:
Sclerenchymatous tissueLung injuries due to vaping resemble injuries like diffuse alveolar damage from toxic chemicals. Which of the following would you consider as a possible diagnosis?
A. ARDS B. COPD C. Fibrosis D. Granulomatosis
A possible diagnosis for lung injuries resembling diffuse alveolar damage from toxic chemicals associated with vaping is Acute Respiratory Distress Syndrome (ARDS).
ARDS is a potentially life-threatening condition characterized by severe inflammation of the lungs that leads to fluid accumulation in the alveoli, causing difficulty in breathing. Lung injuries caused by vaping can exhibit similar patterns to diffuse alveolar damage caused by toxic chemicals.
Vaping-related lung injuries often present with symptoms such as cough, shortness of breath, chest pain, and fever. The mechanism of injury in vaping-related lung injuries is not fully understood but is believed to involve the inhalation of toxic chemicals and inflammatory responses.
The resulting damage to the lung tissue can resemble the diffuse alveolar damage seen in ARDS. Therefore, ARDS is a plausible diagnosis for lung injuries associated with vaping.
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2. Decide with your group which of the two letters in Model 1 will be more successful at reaching
its destination. Justify your choice.
The eight levels of taxa in the most prevalent classification scheme today are domain, kingdom, phylum (plural, phyla), class, order, family, genus (plural, genera), and species, and they are arranged from the most generic to the most specific animal.
This scheme is based on the Linnean system. By dividing organisms into a hierarchy of groups and subgroups based on their similarities and differences, organisms are classified scientifically. The classification of organisms is crucial in order to recognise them and understand the generic of living things. Classifications make it simpler to learn about a variety of different plants and animals, as well as their characteristics and similarities.
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The eight levels of taxa in the most prevalent classification scheme today are domain, kingdom, phylum (plural, phyla), class, order, family, genus (plural, genera), and species, and they are arranged from the most generic to the most specific animal.
This scheme is based on the Linnean system. By dividing organisms into a hierarchy of groups and subgroups based on their similarities and differences, organisms are classified scientifically. The classification of organisms is crucial in order to recognise them and understand the generic of living things. Classifications make it simpler to learn about a variety of different plants and animals, as well as their characteristics and similarities.
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The photograph shows a result of waves made by an earthquake.
What was transported to this location by the earthquake waves?
O A. Rock
O B. Matter
O C. Gravity
D. Energy
does breathing increase the amount of glucose in the blood?
Answer:
Slow breathing lowers blood sugar by reducing the liver's production ... Slow breathing might be a no-cost beneficial intervention for diabetics ... that breathing can potentially improve glycemic response and insulin sensitivity.
Explanation:
Lipid-soluble hormones travel in the blood joined to a protein carrier and are thus called ______ hormones.
Lipid-soluble hormones travel in the blood joined to a protein carrier and are thus called bound hormones. Lipid-soluble hormones are able to pass through the cell membrane of target cells because they are hydrophobic, which means that they are able to dissolve in lipids and other nonpolar molecules.
In the bloodstream, these hormones travel to target cells by binding to proteins that act as carriers. These hormone-protein complexes are called bound hormones. In this state, the hormones are unable to activate target cells since they are unable to pass through the plasma membrane.To become active, the hormones must first dissociate from their carrier proteins. Once they have been released, they are able to pass through the plasma membrane and enter the target cells.
Once inside the cell, the hormone binds to a receptor protein that is specific for that hormone. This binding triggers a series of cellular responses that result in the hormone's effects. Therefore, lipid-soluble hormones are bound to protein carriers and are thus called bound hormones, which are only able to become active once they have dissociated from their carrier proteins.
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