Answer:
reverse transcription
Explanation:
The central dogma of molecular biology states that the flow of the genetic information is unidirectional: DNA to RNA to protein. Thus, the central dogma indicates that a gene is always transcribed into a messenger RNA (mRNA) molecule, and then this mRNA is used as a template for protein synthesis during translation. Reverse transcription is an event that contradicts the central dogma since in this case there are enzymes known as reverse transcriptases that are capable of synthesizing DNA by using RNA as template. In eukaryotic cells, reverse transcription may occur naturally during the insertion of certain Transposable Elements (retrotransposons).
A retired contract administrator who enjoyed gardening sought medical attention for what appeared to be a sinus infection. He received antimicrobials but the conditioned worsened and he was experiencing severe painful spasms in his jaw. He admitted to injuring himself with a gardening tool while wearing sandals in the yard but did not seek medical attention for the wound. The man is likely experiencing.
A. allergic rhinitis.
B. meningitis.
C. septic shock.
D. LPS-mediated inflammatory response.
E. intoxication caused by a focal C. tetani infection.
Answer:
The correct answer is E. intoxication caused by a focal C. tetani infection.
Explanation:
Clostridium tetani bacteria are found in the soil, in the feces and in the mouths of animals. The disease is acquired when wounds become infected by the bacteria. The spores become active and spread throughout the body producing a poison called tetanus toxin. This toxin blocks the nerve signals from the spinal cord to the muscles and can cause generalized severe muscle spasms (lockjaw) exacerbated by external stimuli or muscle spasms in areas adjacent to the wound.
A gamete is best described as what?
A. The protective outer layer of an egg cell.
B. An enzyme in a sperm used to digest the egg cell's membrane.
C. A haploid cell produced for reproduction.
D. A diploid cell produced for reproduction.
Answer:
C. A haploid cell produced for reproduction.
Explanation:
The term "gamete" refers to reproductive cells such as sperm and ova. Sperm and ova are both haploid cells that unite to form diploid cells.
What is absorbed into the blood stream in small intestine and large intestine
18. Pepsin is an enzyme produced by stomach cells
to help digest protein. Stomach cells package
and secrete pepsin in which of the organelles
Answer:
Golgi bodies /apparatus
Explanation:
this organelles are responsible in for packaging and transportation of glyco proteins therefore are the organelles mainly involved in secretion of synthesised proteins
Pepsin is an enzyme produced by stomach cells to help digest protein. Stomach cells package and secrete pepsin Golgi bodies.
What are Golgi bodies?The majority of eukaryotic cells contain the Golgi apparatus, sometimes referred to as the Golgi complex, Golgi body, or just the Golgi.
It packs proteins into membrane-bound vesicles inside the cell before the vesicles are delivered to their destination. It is a component of the endomembrane system in the cytoplasm.
It is situated close to the cell nucleus and the endoplasmic reticulum in the cytoplasm.
Pepsin is an enzyme that the stomach cells manufacture to aid in the breakdown of protein. Pepsin Golgi bodies are packaged and secreted by stomach cells.
Thus, the organelle is Golgi bodies.
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a pupil performed an experiment in a school lab to show the action of a digestive enzyme on a food substance
a) Name and enzyme suitable for such an experiment
b) Name a food substance on which the enzyme that you have named will act
c) Describe any preparation of the food required before the experiment is performed. If no preparation is required state why?
d) give the temperature at which the enzyme-food mix should be maintained for the experiment to work
e) how much time is needed for digestion of food in this experiment?
f) describe a test to confirm that digestion has occurred
The image shows a food web in an Arctic ecosystem. Rising temperatures in the Arctic Ocean can lead to large die-offs of phytoplankton, which are autotrophs. What would most likely happen in an Arctic ecosystem if the phytoplankton population decreased?
Answer:
as the population of phytoplankton decreases, the amount of food for zooplancktons decreases
11.
Asexual reproduction is absent in
(a) Amoeba
(b) Paramecium
(c) Plasmodium
(d) Roundworm
Explanation:
roundeorm is correct answer in this question
Look at the DNA sequence (1st Picture) Which sequence shows a substitution mutation? (2nd Picture)
Also, can you explain how you got the correct answer?
Answer:
Sequence A
CGTTACTGCAAT to CGTGACTGCAAT
Explanation:
Mutation refers to any change, whether big or small, that occurs in the nucleotide sequence of a DNA/gene. This change can either be caused by replicational errors or induced by mutagens. Mutation can be of different types depending on the effects on the affected organism (mutant).
A substitution mutation is a kind of mutation in which one or more nucleotide base is replaced by another in a sequence. This is the case here as the
original sequence: CGTTACTGCAAT
Mutated sequence: CGTGACTGCAAT
The fourth base, T has been replaced by G in the upper strand of the DNA sequence.
Gene Expression Quick Check
Explanation:
1.DNA and RNA hold the code to create proteins that are the key to gene expression.
2.Endoplasmic Reticulum
3.CGTTACTGCAAT to CGTGACTGCAAT
4.The proteins are expressed differently in each cell.
5.mRNA is translated into amino acids.
Differentiate between sub-cellular and acellular particles with examples
Answer:
Explanation:
Sub-cellular particles are particles smaller than the living cell and are found suspended in the cytosol (of a cell) like the nucleus, golgi complex and the mitochondria.
While acellular particles/organisms are particles that do not have a cell like the virsues, viroids and prions. They are not alive/inactive outside a living environment but become active immediately they are inside a living environment (like a cell).
Sub-cellular particles are structures that are found within a cell. These structures perform specific functions and are essential for the cell to carry out its biological processes.
Examples of sub-cellular particles include organelles such as the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, and lysosomes. These structures are composed of both proteins and lipids and are enclosed by a membrane.
Acellular particles, on the other hand, are particles that do not possess a cellular structure and are not alive. These particles are much smaller than cells and are unable to carry out any metabolic processes.
Examples of acellular particles include viruses, prions, and viroids. These particles are composed of either DNA or RNA and can replicate themselves only within a host cell. They do not have their own metabolism and rely on the host cell for replication and survival.
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You find a new organism and are trying to determine what how it eats. You found it in a mud flat at the ocean and it has no teeth, but a very long alimentary canal. You see living examples moving through the mud very slowly. Based on all of this, you conclude that this animals is
Answer:
A Detritivore
Explanation:
A Detritivore is a heterotrophic organism that feeds on dead plant and animal materials. They could also feed through coprophagy which is nutrition obtained by feeding on feces. Worms that dwell on the soil, insects, and mollusks are examples of detritivores. Detritivores can also be found residing in aquatic environments. Crabs and Lobsters are examples of these organisms.
Detritivores have no teeth. So, they tend to suck in their food, and this food, through peristaltic actions, moves directly into the digestive tract where it is acted upon by digestive enzymes. From the observations, I made about the organism at the mudflat at the ocean, I can conclude that it is a detritivore.
what is the volume of a cylinder if the height is 6 cm and the radius is 4 cm?
Answer:
v = πr²h
v = 3.142*4²*6
v = 301.71cm³
Explanation:
volume of the cylinder = πr²h
what type of environment would you most likely find fish species 1?
Answer:
Different species of fish are adapted for different habitats: rocky shores, coral reefs, kelp forests, rivers and streams, lakes and ponds, under sea ice, the deep sea, and other environments of fresh, salt, and brackish water. Some fish are pelagic: they live in the open ocean.
Explanation:
READ THE CHAPTERS 1, 2, 3, 4,5 FROM THE BOOK 1 JOHN IN YOUR BIBLE AND ANSWER THE FOLLOWING QUESTIONS: ¿Why did John write this epistle? (1:4, 2:1, 2:26) ¿In this epistle, what did John say that God is and begins with the letters "L" and "L"? (1: 5, 4: 8) What kind of person does Juan call a liar or one who lies? (1:10, 2: 4, 22) What did Juan say his hands had felt? (1: 1) What did John say that cleanses us from all sin? (1: 7) If a Christian sins, what should he do? (1: 9) Everything in the world, what does Juan say it is? (2:16) How did Juan call his readers? (2:12, 13) How does John define sin? (3: 4) What does John say about those who are born again? (3: 9) What Old Testament character does John use as an example of those who do not love one another? (3:12) What does Juan call the person who hates his brother? (3:15) How does John say that we should love? (3:18) Why should we not believe every spirit, but rather test the spirits if they are from God? (4: 1) Who or what is greater than the one in the world? (4: 4) What does John say about the commandments of God? (5: 4) Who are the three who bear witness on earth? (5:8) What are the two word phrases that John used at least five times in the last chapter of I John? (5: 2,15,18-20) What does John say we should guard against at the end of this epistle? (5:21)
Answer:
so1: he wrote that their joy may be complete,that they may not sin and also that they may not be deceived.
2:John says that God is light and love
3:so John calls a liar whomever says that they have not sinned or say they know Jesus but don't obey his commandments or denies that Jesus is the Christ
4:I guess is the manifestation of God's word through Jesus Christ
5: the blood of Jesus cleanses us from all sins
6:a Christian should confess their sins
7:everything of this world,lust and pride,are not of God but of this world
8:he called them little children and father's
9:he defines sin as lawlessness
10:he says that none of them commit sin but God's nature abides in the person therefore for those born of him can't commit sin
11:he used Cain who murdered his brother
12:he calls them a murderer
13:he says that we should love in deed and I'm truth
14: because of the presence of many false prophets in the world
Answer:
what he said.how did you type all of that in one sitting
Which is most likely a source of air pollution? littering CFCs oil spill runoff
Answer: CFCs
Explanation: The other options aren’t as relevant to air pollution.
Answer:
cfcs
Explanation:
Without the discovery of magnetic reversals recorded on the ocean floor, scientists
A. could not confirm the usefulness of sonar
B. could destroy the hypothasis of continental drift
C. could not provide a mechanism for moving continents
D. could explain how the seafloor was being destroyed
Answer:
C. could not provide a mechanism for moving continents
Explanation:
Magnetic reversals have the habit of causing geological displacements, since they are directly linked to the movements and distribution of tectonic plates on the planet, which are responsible for the movements of the continents. In this case,
if the discovery of magnetic reversals recorded on the ocean floor were not carried out, it would be impossible to establish its relationship with the movement of the tectonic plates, making it impossible to provide a mechanism for moving continents.
what are sex hormones?why are they named so? state their function.
Answer:
Sex hormones or hormones of the reproductive organs are certain cells in the reproductive organs that produce hormones.
The testis produces testosterone,the male sex hormone,and the ovaries produces oestrogen and progesterone, the female sex hormones.
In a sexually mature male,testosterone influences sexual behaviour, and together with FSH,regulates sperm production in the seminiferous tubules of the testes.
Sexually matured females undergo a regular 4-week reproductive or menstrual cycle during which a mature egg is released.This cycle is regulated by oestrogen and progesterone. During pregnancy, progesterone inhibits egg production (ovulation),brings about the development of the placenta and prevents the uterus from contracting....I hope this answers your question... Thank you for the question.
Match the following: Hypoxia. A. May be cuased by tumors, mucus, or inflammatory material.B. May be caused by left sided heart failure.C. Huge amounts of harmful free radicals cause profound CNS disturbances, coma, and death D. Is difficult to identify in dark-skinned individuals.
Answer:
it is c
Explanation:
In order to determine whether you have hypoxia, your doctor will need to check the amount of oxygen in your blood. Therefore, option (C) is correct.
What do you mean by hypoxia?Hypoxia is low levels of oxygen in your body tissues. It causes symptoms like confusion, restlessness, difficulty breathing, rapid heart rate, and bluish skin.
Moreover, hypoxia is a state in which oxygen is not available in sufficient amounts at the tissue level to maintain adequate homeostasis; this can result from inadequate oxygen delivery to the tissues either due to low blood supply or low oxygen content in the blood (hypoxemia).
Hence, heart and lung function issues can lead to five categories of conditions that cause hypoxemia: ventilation-perfusion (V/Q) mismatch, diffusion impairment, hypoventilation, low environmental oxygen and right-to-left shunting.
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Over the period of a few days, a hospital receives an overwhelming increase in the number of patients with food poisoning. How would a scientist respond to this increase in sick patients? A. by examining the type and source of foods each patient ate and identifying patterns of overlap within the foods consumed B. by giving the patients vitamin injections and prescribing a medication to calm their stomach and bowel symptoms C. by recording the patients' symptoms in their medical records and advising them to get rest and drink fluids D.by providing kind words, nurturing, and emotional support to the patients and asking them about their feelings
Answer:
A. By examining the type and source of foods each patient ate and identifying patterns of overlap within the foods consume.
Explanation:
I believe a medical professional would be the one to prescribe patients with any sort of medicine they needed, whereas the scientist would be investigated what caused the food poison and running tests to help find out what happened.
Answer:
A. By examining the type and source of foods each patient ate and identifying patterns of overlap within the foods consume.
Explanation:
Galactosemia is an inherited genetic condition. Children with this condition cannot break down the sugar galactose, which is part of lactose. Based on the pedigree chart, is this condition a dominant or a recessive disorder? Explain your reasoning.
Answer:
Recessive.
Explanation:
Galactosemia is an autosomal recessive genetic disorder. Recessive genetic disorders occur when an individual inherits a non-working gene from each parent.
There is no chart attached, so the reasoning is just common scientific knowledge. Please attach the chart so I can properly answer the question!
Answer:
It is recessive. Both parents are heterozygous for the trait, but they do not exhibit the disease themselves. If it were a dominant gene, both parents would have the disease if they carried the gene for it.
Explanation:
This is the answer on edmentum! Thanks!
What is the monomer that’s makes up polysaccharides
Answer:
glucose
Explanation:
Polysaccharides are long chains of monosaccharides linked by glycosidic bonds. Three important polysaccharides, starch, glycogen, and cellulose, are composed of glucose. Starch and glycogen serve as short-term energy stores in plants and animals, respectively. The glucose monomers are linked by α glycosidic bonds.
Fomites are Group of answer choices insects that transmit pathogens from an infected host to a non infected host. animal sources for human pathogens. inanimate objects involved in the indirect contact transmission of pathogens. fecal material from infected hosts. silent carriers of infectious diseases.
Answer:
Fomites are inanimate objects involved in the indirect contact transmission of pathogens.
Explanation:
Fomites are inanimate objects involved in the indirect contact transmission of pathogens. These objects include a whole range of items mostly found in indoor environments. When pathogens such as viruses and bacteria come in contact with these objects through various human and animal activities such as sneezing or coughing, use of toilets etc; these pathogens remain active on these objects and can then cause disease when others come in contact with these objects.
Common fomites in the home include toilet seats and handles, doorknobs, kitchentops, bed coverings , mobile phones, light switches as well as as toys. In offices, door handles, stairway railings as well as wring materials are common fomites. Especially concerning is the issue of disease transmission by fomites in healthcare facilities since there is constant exposure of surfaces and equipments to various pathogens.
To help prevent the spread of diseases by fomites, regular handwashing and disinfection of commonly touched surfaces is required.
Interpreting an Expression Quick Chec How many factors does the expression (17 –r) have? O four O two one three
Answer:
One
Explanation
Arborviral diseases: Group of answer choices Refer to arthropod-borne viral diseases Can produce central nervous system illness Are most often spread by mosquitoes May produce acute self-limited fevers
Answer:
All of the options are correct.
Arboviral diseases are arthropod borne, they can produce central nervous system illnesses, transmitted by mosquito bites and also produce acute self limiting fevers.
Explanation: Arboviruses are viruses that are harboured by arthropods which includes mosquitoes, they have the capacity to cause illnesses which are acute and self limiting(it has the ability to resolve on its own without treatment). It has also been found to cause illnesses to the central nervous system(the brain and the spinal cord).
In an ________ solution, red blood cells ________. Group of answer choices hyposmotic, lose water and shrivel isomotic, have a normal shape isosmotic, swell and may burst hyperosmotic, have a normal shape isosmotic, lose water and shrivel
[tex] \large{ \boxed{ \bf{ \color{skyblue}{The \: correct \: question:}}}}[/tex]
Q. In an ________ solution, red blood cells ________. Group of answer choices:
Hyposmotic, lose water and shrivel Isomotic, have a normal shape ✔️Isosmotic, swell and may burst Hyperosmotic, have a normal shape Isosmotic, lose water and shrivel[tex] \large{ \boxed{ \bf{ \color{violet}{The \: correct \: answer:}}}}[/tex]
In an isosmotic solution, red blood cells have normal shape.
Option B
Explanation:-Osmosis : The movement of the solvent or water molecules from a solution of their higher concentration to a solution of lower concentration through a semipermeable membrane.
❍ Depending upon the osmotic concentration, There are three types of solution and their result when cell is keot inside them:
Hyposmotic (Water enters, Swells up)Isosmotic(Equal flow, No change)Hyperosmotic(Water comes out, shrinkage)━━━━━━━━━━━━━━━━━━━━
When making bread why is the dough left in a warm place for a while before putting it in the oven
Answer:
so that bread will rise when heating
Explanation:
the yeast will activate and be ready to produce gases when baking
If a force of 90 N is applied to each cart, which cart has the greatest
acceleration? *
1 point
Answer: Cart 1 would have the greatest acceleration. It weights less and if you apply force it will go faster than other carts.
Explanation:
(at least so I think, don't shame me if I am wrong)
how many 2steps photosynthesis
Explanation:
photosynthesis takes place in two stages the light depend reactions the light independent reaction or Calvin cycle
Find the average of 124, 456, 788, 343. Write it as the closest whole number
Help? You are studying an outcrop where the lower layer is limestone and the layer directly on top of the limestone is sandstone. Near the bottom of the sandstone layer are small, weathered pieces of limestone entirely contained within the sandstone. Explain how these pieces of limestone came to be contained within the sandstone.
Answer:
Due to mixing of particles present in the upper layer of limestone with sandstone during deposition.
Explanation:
The parent layer was limestone layer which is older than sandstone layer. This sandstone layer spreads on the limestone layer because of wind. The wind moves these sandstone from other region and their deposition occurs on the limestone layer. During deposition of sandstone, some particles of limestone which are present at the surface mixes with the sandstone so that's why in sandstone layer, small and weathered pieces of limestone are present.
here are times where you will be provided with BUD dates. When you do not have access to the BUD dates, you will have to determine that date yourself. What is the appropriate BUD date for a water containing oral formulation? Not later than 14 days Not later than 30 days
Answer:
Explanation: Not later than 14 days.
Beyond Use Date (BUD) is the date after which a compounded sterile preparation may not be stored or transported. This time is calculated from the date of compounding, and it is different from expiration date. This is because the BUDs are assigned with a different approach from those applied to assigning expiration dates to manufactured drug products. Also, compounded preparations are intended for administration following short-term storage. So, the BUD is the date after which a compounded preparation shall not be used. A reliable BUD is established to ensure that the preparation has an accepted quality and purity at least until the labeled BUD.
BUD is calculated by:
Type of container in which it is packagedHow long the medication will be takenType of drugHow fast is the drug degradatedStorage conditionsDosage of the medicationNature of the drug and its degradation mechanism Potential for microbial proliferation in the preparationFor Nonaqueous Formulation, the BUD is not later than 6 months or the time remaining until the earliest expiration date of any API (Active pharmaceutical ingredient), whichever is earlier.
For Water-Containing Oral Formulation, the BUD is not later than 14 days when it is stored at controlled cold temperatures.
For Dermal and Mucosal Liquid, Semisolid Formulations/Water-Containing Topical, the BUD is not later than 30 days.
