Answer: Here are the options.
A. Teratogens impact different genotypes differently.b.teratogens impact specific aspects of development.c.teratogen effects may not emerge until later in life.d.teratogen effects are the same regardless of the time when the individual is exposed.
The key lesson is that teratogens impact different genotypes differently or in different ways.
Explanation:
thalidomide is a tetratogen , a substance that will have a physical or functional defect on an embryo after the pregnant mother is exposed to the substance. This disturb the physical development of the child. It became popular to treat morning sickness in pregnancy but was discovered to result in major limb deformities;
Tetratogen impact different genotypes in different ways because different genotypes have different ways they respond to tetratogens because of their level exposure and subscetability. This the main reason thalidomide showed no impact when tested on prenatal rabbits but led to birth defects in prenatal humans. The genotypes of prenatal rabbits are not subscetiple to tetratogens compare to that of the developing embryo on exposure.
Quentlon 3 of 10
What is the responsibility of a scientist?
O A. To earn money
B. To study the physical world
C. To run governmenta
O D. To influence votero
Answer:
b
Explanation:
because what a sciatica do
John complains of severe pain in the region of his left cheek which seems to increase when he chews on his food. A tense swelling is seen just anterior to his left ear. Which of the following structures do you think is the most likely cause of the problem?
1) submandibular salivary gland2) lingual tonsil3) palatine tonsil4) parotid salivary gland5) sublingual salivary gland
Answer:
Parotid salivary gland.
Explanation:
John's parotid salivary gland is the major cause of the problem
Parotid salivary gland is the largest of the salivary gland. Parotid salivary gland is found in the mouth, the upper part of the cheek and part of the ear.
This gland help to chew and empty saliva into the mouth.
A viral infection like flu, mumps can cause swelling of the parotid salivary gland.
Other symptoms include ;
Tender , lump cheeks.
Swollen cheeks
Difficulty in opening the mouth and swallowing food.
Pain in the left ear
Fever , chills and general weakness and so on.
Treatment of this depend on the type of infection, drinking hot water with lemon juice can help can help stimulate saliva.
Answer:
parotid salivary gland-parotitis.
Explanation:
This is located in front of and just below each ear.When the duct which drains this gland it blocked,drainage of saliva is prevented, and therefore lack of drainage leads to pain.
its inflammation is due primarily to bacterial infection,among other factors which are HIV,diabetes,etc.
Antibiotic intake is the most effective way of treatment.
In addition,the treatment is based on saliva stimulation to unblock the drainage. Therefore lemon intake either as raw or with water is ideal way.
what moves the food in the digestive organs ?
Answer:
Food moves through your GI tract by a process called peristalsis. The large, hollow organs of your GI tract contain a layer of muscle that enables their walls to move. The movement pushes food and liquid through your GI tract and mixes the contents within each organ.
Explanation:
Which scenario describes allopatric speciation?
A) A population of squirrels is separated by the Grand Canyon. The two
subpopulations evolve into two distinct species.
B) A tetraploid plant species evolves from a diploid ancestor. Both the tetraploid
and diploid species are found in the same habitat.
C) One population breeds in the fall; another population breeds in the spring.
D) A male horse and a female donkey mate, producing a sterile hinny.
Answer:
A) A population of squirrels is separated by the Grand Canyon. The two subpopulations evolve into two distinct species.
Explanation:
Answer:
Ok
Explanation:
A) because it's true
A compound such as cephalothin that is made by a species of mold and is able to kill or inhibit a number of different bacteria is correctly referred to as:
Answer:
Antimicrobial agent
Explanation:
Antimicrobial agents are agents that helps fight against microorganism. The couple occur in natural or synthetic form.
Antibiotics are synthesis from natural source such as mold, bacteria to fight against various diseases.
Cephalothin produce by mold is an example of a natural antimicrobial that is produce by mold to kill microorganism causing various illnesses it could be further process into a synthetic antimicrobial agent and can be used as antibiotics.
Why is the word "translation" used for protein production? Protein production is the process of:________.
Answer:
Answered below
Explanation:
Translation is the actual process of protein synthesis and it occurs in the cytoplasmic ribosomes. Protein production or protein synthesis is the process in which cells make proteins. This process occurs in two stages called transcription and translation.
Transcription involves the transfer of genetic information in the deoxyribonucleic acid to the messenger ribonucleic acid in the nucleus through the process of initiation, elongation and termination. The messenger ribonucleic acid is processed and carries the information to a ribosome in the cytoplasm where protein production takes place through translation.
During translation, the instructions in the messenger ribonucleic acid are read and transfer ribonucleic acids ensure the correct sequencing of amino acids in the ribosomes. The rRNA is involved in the bonding of the base pairs to produce a polypeptide chain which is a unit of a finished protein.
Answer:
The word translation is use for protein production because it is the process of translating RNA sequence of bases.and thereby producing sequence of encoded amino acids from the RNA
sequence which is a consist of polypeptide chain during protein synthesis.
Protein production is the process of synthesising protein.
Explanation:
Translation is a process that occur in the RIBOSOMES or endoplasmic recticulum after transcription of RNA and it is the process where genetic code in the messenger RNA is decided or translated to a sequence of amino acid.
Protein synthesis is processs by which cells produce protein which occur in the RIBOSOMES.
Protein synthesis occurs in two stages which are Transcription and translation.
Transcription is the process whereby genetic instructions or materials in DNA are transmitted to messenger RNA in the nucleus.
It involves initiation, enlongation and termination.
Translation is a process that occur in the RIBOSOMES or endoplasmic recticulum after transcription of RNA and it is the process where genetic code in the messenger RNA is decided or translated to a sequence of amino acid.
Protein synthesis is process by which cells produce protein which occur in the RIBOSOMES.
Molecules that are too large to pass through the pores of a cell membrane may enter the cell by a process known as
Answer: Facilitated Diffusion
Explanation:
Facilitated Diffusion is a process for molecules that cannot be readily diffused through cell membranes. Such molecules may be too large to pass through the pores in the membrane.
Thank Me later!
Rarely, the conjugation of Hfr and F− cells produces two Hfr cells. Explain how this event takes place.
Answer:
"F" on account of E.coli show the fertility factor. Cells possessing this factor (called donors) hold the ability to move the hereditary material over the strains by a procedure called conjugation. F-factor exists as a free element (cell is called episome) or integrated into bacterial chromosome (cell is called Hfr-High frequency recombinant). Cells with no F factor are recipients.
In a Conjugation between a F+ and F-cell just F factor from F+ cell gets moved o produce two F+ cells. But during a Hfr and F-conjugation as the F factor is incorporated into the chromosome and by the intrinsic idea of F factor to get moved the Hfr cells attempt to move their whole genetic material across and there are two outcomes wherein one case there is a fragmented exchange of hereditary material and the recipient cell remain F-and when there is a finished exchange of hereditary material the cell becomes Hfr yet this is uncommon as the time taken for the total exchange of hereditary material is excessively long for the cells to remain contact.
True or false isotopes of the same element have a different number of neutrons with the same number of protons
Answer:
True, isotopes of the same element have a different number of neutrons with the same number of protons.
A student notices that there are situations in which her avocados go bad very quickly. She decides to test the effect of temperature on how fast the avocado ripens. She purchases 3 mini avocados and 3 regular sized avocados. She places 2 mini avocados in the refrigerator and 2 regular sized avocados on the windowsill. She then placed the last mini avocado and regular sized avocado in a paper bag under the sink. Is this a controlled experiment? Why or why not?
Answer:
The last mini avocado and regular sized avocado in a paper bag under the sink is this a controlled experiment.
Explanation:
The last mini avocado and regular sized avocado in a paper bag under the sink is this a controlled experiment because it contains both the mini avocado and regular sized avocado in a paper bag under the sink, which is believed to have high temperature.
So to indeed know whether temperature has effect on the avocado, the control experiment is the mini and regular sized avocado in the paper bag under the sink.
Hope it helps.
after visiting a wastewater treatment plant, Shelly has a few questions. Which question can be answered through scientific investigation?
a:how much Wastewater is treated per day in the wastewater treatment plant?
b:are employees at the wastewater treatment plant satisfied with their jobs?
c: are the investors unhappy with the revenue generated by the wastewater treatment plant?
d:what should be the role of the government in promoting the wastewater treatment plant?
Answer:
how much wastewater is treated per day in the wastewater treatment plant?
Answer:
How much wastewater is treated per day in the wastewater treatment plant?
Drag each label to the correct location. Each label can be used more than once. In a hydropower station, water stored in dams is allowed to fall with force to make a turbine move. The turbine moves and produces electricity. In the diagram, identify the stages of transformation of energy in the hydropower station. Please help!!
Answer:
Stored water - gravitational energy
Water fall - kinetic energy
Turbine - kinetic energy
Powerlines - electric energy
Explanation:
Dams are used to store or hold water for hydroelectric power plants. This stored water which has gravitational energy is a form of potential energy.
When the water is left to fall and run fast through the turbine, the gravitational energy is transformed into kinetic energy which makes the turbine to spin.
As the turbine spins, kinetic energy that is produced also powers the shaft of the engine in the electric generator, which produces electricuty.
Kinetic energy is transformed to electric energy and transmitted along powerlines.
*See attachment below for labelled energy that is being transformed at several points.
Answer:
Stored water - gravitational energy
Water fall - kinetic energy
Turbine - kinetic energy
Powerlines - electric energy
Explanation: PLATO
As the bone collar thickens, the ____________ forms, and secondary ossification centers appear in the ____________ .
Answer:
Medullary cavity, epiphyses
Explanation:
During the thickening of the bone collar, the penetration of Osteoblasts into the decomposing cartilage occurs thereby replacing it with spongy bone giving rise to a primary ossification center.
Osteoclasts then brings abiut the nreak down of the spongy bone to open up the medullary cavity. The cartilage found in the epiphyses then continue to grow increasing the bone's length.
Retroviruses have extraordinarily high rates of evolution of all viruses because (SELECT ALL THAT APPLY):
Answer: Here are the options.
. They are single-stranded.
2. Their reverse transciptase has no proofreading capability
3. Their genetic material is RNA.
4. They disrupt the immune response.
The correct answer is because Their reverse transcriptase has no proof reading capability.
Explanation:
Retrovirus is a type of RNA that replicate it's copy and put it in the host cell DNA, there by changing it's genome. Retrovirus mutate at high rate in vivo viral replication. And this mutation in retroviruses may occur at different stages like during proviral transcription by RNA polymerase II, during minus-strand DNA synthesis (RNA template) by viral reverse transcriptase, or during plus-strand DNA synthesis (DNA template) by reverse transcriptase.
Retrovirus exhibit a high mutation rate. Polymerization errors during DNA synthesis by reverse transcriptase, has no proof reading capability, is a major method for generating genetic variation within retroviral populations.
What is radioactive dating?
A. A method of determining the age of a fosall based on the amount
of certain isotopes that remain in a fossil or rock
B. A method of determining the age of a fossil that estimates the age
of the organism at its death
C. A method of determining the age of a fossil based on a
comparison to the age of other similar fossil
D. A method of determining the age of a fossil that estimates how
closely related various fossilized organisms were
Answer:
A
Explanation:
Radioactive dating uses carbon isotopes to determine the age of a material.
Radioactive dating is a method of determining the age of a fossil, based on the amount of certain isotopes that remain in a fossil or rock. Thus, the correct option is A.
What is Radioactive dating?Radioactive dating may be defined as a methodology for estimating the approximate age of rocks and minerals by the utilization of radioactive isotopes.
This method of radioactive dating is primarily used in igneous and metamorphic rocks, which cannot be dated by the method of stratigraphic correlation that is used for determining the age of sedimentary rocks.
Therefore, the correct option for this question is A.
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Which of the following are NOT ways that viral vectors are modified to be made safer?
a. deleting virulence genes
b. avoiding genome insertion next to oncogenes
Answer:
eliminating virulence genes would be the correct answer
Explanation:
The correct answer was that since if the relationship between viruses and oncogenes is modified, the release of the oncoprotein is avoided, as well as the presence of malignant neoplasms before viral infections such as: epstein barr virus and kaposi's sarcoma.
So my answer is that the virulence factors of a virus cannot be modified to make viral vectors safer, the viral vector would be human and this is safer if its protoncogenes do not become oncogenes due to viral infections.
largest bird in the world, don't search on google baba
Answer:
ostrich is the right answer.
Individuals who have chronic bronchitis most often have:________.
A. a productive cough.
B. normal lung sounds.
C. a barrel chest.
D. substantial weight loss.
the correct answer is A.
Individuals who have chronic bronchitis most often have a productive cough. The correct option is A.
What is bronchitis?Bronchitis is an inflammation of the lungs' primary airways (bronchi), which causes them to become irritated and inflamed. On either side of your windpipe, the main airways branch off (trachea).
They have a consistent cough and lead to smaller and smaller airways inside your lungs called bronchioles.
Thus, the correct option is A.
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The anode heel effect is more pronounced :
A with rotating anodes.
when the collimator is not completely ope
C when the collimator is open wide
D a the anode
Answer:
At the Anode.
Explanation:
Anode heel effect is the lower field intensity that occur at the anode compare to the cathode which is as a result of lower x-ray emissions from the target material at angles perpendicular to the electron beam.
It occur at the anode because the effect is stem when x-rays photons is absorbed before they leave the anode where they are produced.
Siblings Billy and Sue are brother and sister, but g are not genetic copies of each other. For example, Sue inherited their mother's copy of chromosome 13 but their father's copy of chromosome 14, while her brother Billy inherited their father's copy of both chromosomes 13 and 14. This is an example of:
Answer:
The options are
A.Independent assortment
B. Mutation
C. Crossing over
D. Non disjunction
The answer is A.Independent assortment
Explanation:
Independent assortment of genes involves the separation of genes during the formation and development of reproductive cells.
A boy has XY chromosome and a lady has XX chromosomes. This explains why Sue inherited the mother's copy of chromosome 13 but their father's copy of chromosome 14 while her brother Billy inherited their father's copy of both chromosomes 13 and 14. He inherited both due to the presence of XY chromosomes.
1. To calculate the frequency of the brown allele, count the number of and divide by the total number of alleles in this population. 2. In this beetle population, the number of brown alleles is . 3. In this beetle population, the total number of alleles is . 4. The frequency of the brown allele in this beetle population is . 5. The frequency of the green allele in this beetle population is .
The given question is incomplete as the detail of the population was not given, however, the correct diagram related with the question is attached with the answer:
Answer:
The correct answer is -
brown alleles
8
20
0.4
0.6
Explanation:
1. To calculate the frequency of the brown allele, count the number of BROWN ALLELES and divide by the total number of alleles in this population
2. In this beetle population, the number of brown alleles = 8 represented by genes with the black color segment.
3. In this beetle population, the total number of alleles for both colors = 20
4. The frequency of the brown allele in this beetle population = 0.4
5. The frequency of the green allele in this beetle population = 0.6
Which type of bond forms disaccharides?
Answer:
Glycosidic Bond
Explanation:
Glycosidic bond is used to form disaccharides. When two monosaccharides joins together, a glycosidic bond is formed resulting in a disaccharide.
Answer:
glycosidic bond
Explanation:
Disaccharides are formed when two monosaccharides join together by the dehydration synthesis reaction resulting in a glycosidic bond between the two monosaccharide molecules. The reaction produces water as a side product.
Ms. Sloan is a 27-year-old who is complaining of fatigue, shortness of breath, stomach pain, and overall weakness. She is diagnosed with iron deficiency anemia. What could you tell her about this condition? What specific nutritional needs does she have, based on her diagnosis, gender, and age?
Answer:
anemia that is caused by a deficiency of iron and characterized by hypochromic microcytic red blood cells. Vitamin D
Explanation:
How does the top level of an energy pyramid compare to the bottom level of that energy:
O it contains the greatest amount of the total energy.
ols contains the same amount of the total energy.
Our shows a reversal of the Row of energy.
O It contains the least amount of the total energ
Answer:
It contains the least amount of energy.
Explanation:
As compared to the bottom level, the energy of the top level is less in amount. Here is given an energy pyramid, in which the top level has the lowest energy and the bottom level has the most energy.
Answer:
R
Explanation:
How would the coils in the middle of the diagram change
to show a longitudinal wave with higher energy?
They would be farther apart.
They would be closer together.
O They would be shaped like a hill.
O They would be shaped like a valley.
Answer:
They would be shaped like a hill.
Explanation:
A longitudinal wave with higher energy have greater amplitude. Amplitude is the distance between the crust and trough of the wave. Crust is the upper part of the wave while trough is the lower part of the wave. If the distance between crust and trough of the wave is higher so the amplitude is also greater and we can say that the wave contains high amount of energy and vice versa. The shape of the wave just like a hill.
The chemicals released in a synapse when a signal passes through are _________.
A. Synaptic vesicles B. Receptors C. Receptors and Synaptic vesicles D. Neurotransmitters
The chemicals released in a synapse when a signal passes through are Neurotransmitter.
What is Neurotransmitter?Neurotransmitter is a chemical that is released from a neuron after the happening of an action potential. The neurotransmitter travels across the synapse to excite or inhibit the target neuron.
So we can conclude that the chemicals released in a synapse when a signal passes through are Neurotransmitter.
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The chemicals released in a synapse when a signal passes through are called neurotransmitters.
What is a synapse?The term synapse is used to describe a gap that exists in the central nervous system. It is usual to transmit nerve impulses over such gaps. In that case, the neurotransmitter is required.
Hence, the chemicals released in a synapse when a signal passes through are called neurotransmitters.
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Explain how fossils were used to develop early geologic time scales.
Answer:
Fossils refer to the remains of the past life like shells, bones, or other tough parts, and it may also comprise the proof of past life-like leaf impressions or footprints. A geologic time scale refers to the timeline, which demonstrates the past time of the Earth.
The planet in which we live is very old, and the study of the past of the Earth needs one to think about the times, which were millions or billions of years old. The geologic time scale is used by scientists to explain how the incidents took place on Earth.
The development of the geologic time scale was done after scientists witnessed certain modifications in the fossils that took place from the oldest to the newest sedimentary rocks. The phenomenon of relative dating was used to differentiate the past of the Earth in many parts of time when the same organism was there on Earth.
What is social structure? What are some of the factors that influence social structure, please
explain them?
recome
Answer:
what is social structure?
social structure is the patterned social arrangements in society that are both emergent from and determinant of the actions of individuals.
Explanation:
What are some of the factors that influence social structure
1 distribution of recources
-leaves (abundant and dense)- support large groups of animals
2 fruits and nuts-occur in clumps-most efficiently exploited by smaller groups of animals
-some tend to be protective of resources, especially if their feeding area is small enough to be defended
3 insects (widely scattered) alone or company of 1 and 2
4 seasonal foods-smaller feeding groups-seasonality of water availability
hope this can help you....
Sound can be heard when air passes over a respiratory structure that is located between the pharynx and the trachea.
Which structure is responsible for the voice?
The structure which is responsible for the voice is called the Larynx or voice box.
What do you mean by Trachea?The Trachea may be defined as the airway that leads from the larynx (voice box) to the bronchi.
The larynx is a hollow structure that is connected to the trachea through which the pass of air takes place to the lungs. The larynx is the structure that also produces vocal sounds as well.
Therefore, the structure which is responsible for the voice is called the Larynx or voice box.
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A scientist is examining the-function of macromolecules in a cell. She notices that movement of large molecules into and out of cells is disrupted when she damages one specific type of macromolecule. Which macromolecule has she most likely damaged.
Answer:
Proteins are the macromolecules damaged by the scientists while performing experiment.
Explanation:
Lipids and proteins are two components that makes the cell membrane and help them to play their role. Proteins found in between the bilayer of lipids and assists the bilayer transferring of various substances in and out of the cell also known as carrier molecules.
Hence, when scientist was examining the macromolecules, the proteins were get damaged and thus the movement of materials also get interrupted.
Thus, to the given question protein is the answer.
Answer:
The answer is D
Explanation:
Got it right on Edge