hypothesis is proposed answer to a scientific question.
hope this answer is correct ..
14. Which of the following may produce more than one functional protein
from an mRNA transcript?
a. chromatin condensation c. epigenetics
h transcrintional regulation d. alternative mRNA processing
Answer:
D. Alternative mRNA processing.
Explanation:
Which of the following practices that are needed to run a nuclear power plant has a negative impact on both air and water
Answer:
The options are
a.cooling of the power plant
b.mining of uranium
c.storage of radioactive waste
d.monitoring the reactor
The answer is b.mining of uranium
Explanation:
Uranium is known as a radioactive element which is used as a fuel to power a nuclear energy plant. Mining of uranium could cause it to mix with air and water which results in contamination.
When contamination occurs and it gets into the body of humans or animals by inhalation or ingestion it poses a high risk of cancer and kidney damage.
b. (state a differences between blood and inter cellular fluid
Which of the following techniques involves hybridizing a cDNA sample to a chip containing thousands of single-stranded DNA sequences, allowing one to study the expression of thousands of genes simultaneously?
A) PCR
B) Southern blot
C) FISH
D) Agarose gel electrophoresis
E) DNA microarray
Answer: Option E.
DNA micro array.
Explanation:
DNA microarray is a technique that involves hybridizing cDNA into a chip that contains thousands of single stranded DNA sequences. This technique enables one to study expression of thousands of genes at the same time.looks for extra (duplicated) or missing (deleted) chromosomal segments, sometimes called copy number variants (CNVs).
DNA microarrays are microscope slides which are printed with thousands of tiny spots in specific different positions, and each of the spots contain a known DNA sequence or gene.
primary use of DNA microarrays is transcriptional profiling.
The basic principle behind the DNA microarray is “ nucleic acid hybridization.
The uterine cycle describes the cyclic changes of thickening and degeneration that the endometrium goes through in a month. What is the order of events in one uterine cycle
Answer:
During the uterine month there are different phases through which the uterus passes, these phases are regulated by hormones and are responsible for producing the cycle necessary for fertilization.
Phase where menstruation occurs: This phase only happens if the woman was not fertilized and did not develop the diploid cell together with a sperm, since not being fertilized, all the uterine preparation that had been planned in the body for fertilization will be released as that we know "menstruation", in this phase estrogens and progesterone are low. The inner walls of the unfertilized uterus are released.
Follicular phase, in the follicular phase the ovaries prepare to release an egg and estrogen begins to rise. (From the first day of the period until ovulation)
Proliferative phase, in the proliferative phase, new vessels proliferate and the outermost layer of the uterus prepares itself for possible fertilization, is where spiral arterioles can begin to form again in the external cut of the myometrium.
Ovulation, here is where the mature ovum is called Graff's follicle, at this time estrogen reaches its peak and then descends.
Luteal phase, in the luteal phase the production of the luteal body is generated, at this stage progesterone takes center stage, and it is the range between ovulation and menstruation (if not fertilized)
Last phase, secret phase, in this phase there are two possible ends, if the woman is fertilized, the egg cell implants and begins the development of the embryo and if it is not fertilized, the entire external cut of the myometrium is prepared to be secreted.
Explanation:
A very important fact to clarify is that women are born with a quantity of ovules that at the end of this uterine cycle ceases to exist, this process is what we know as menopause.
That is to say that women have a quantity of ovules that will one day run out, and the body releases them from the menarche or the first menstruation, generating that in each released ovule a uterine cycle is completed, the day they end the woman will have reached menopause and would have no chance of being fertilized or completing the uterine cycle.
superficial layer of the endometrium is shed
basal layer of endometrium grows, forms gland and blood vessels
enriched endometrial blood supply
endometrial glands secrete nutrients into uterus
An example of genetic recombination is shown in the diagram. An example of genetic recombination is shown. 2 cells are connected but each have their own D N A. A structure is stretching from one cell to another. Which type of bacterial reproduction is depicted in the diagram? binary fission transduction conjugation transformation
Digram is not given in the question, so, the required diagram is attached below:
Answer:
conjugation
Explanation:
Conjugation is defined as a sexual process in which two organisms of the same species share their nuclear material or DNA with each other and form a new organism.
Binary Fission is defined as the process in which one organism divides into two daughter cells to form a new organism.
Transduction is the process in which a foreign DNA is transferred into a cell with the help of a vector.
Transformation is the process of genetic alteration in which a cell acquires genetic material from its surroundings.
Hence, the diagram is showing the process of "conjugation".
Answer:
the answer is C-conjugation
Explanation:
why the tropics have more species than the poles of the Earth
Answer:
the tropics have more species because of the more humid enviroments because not many warm blooded animals can live near the poles. because of the abnormally cold temperatures, not many animals can survive unlike in tropical areas where there is a more vaste amounts of food and plant species, also shelter.
A pharmaceutical company is working on a drug to slow the spread of Ebola. Which of the following should be the company's focus?
a. Sanitizing the drinking water
b. Protecting the food supply
c. Person-to-person contact
d. Killing the insect vector
Answer:
C
Explanation:
Although Ebola isn't transferred by the air and through touch. Bodily fluids like sweat, saliva, urine, breastmilk, semen, and vomit all transmit the disease, if a person gets it in a cut or is directly introduced by it (sexual intercourse.)
The endosymbiosis or endosymbiont theory is meant to explain the origin of two specific organelles found in eukaryotic cells.
1. Name the two organelles.
2. Provide two pieces of evidence that support this theory.
Evidences that supports this theory
70s Ribosomal RNAnon membrane bound DNAThe movement of ions and other atomic or molecular substances across cell membranes without the need for energy input is known as
Answer:
passive transport
Explanation:
The movement of ions across a cellular membrane without the need for energy input is known as passive transport. Diffusion is the passive movement of molecules from an area of high concentration to low concentration. Voltage describes the difference in electrical potential between two separate points, and isotonic movement describes the activity of a system at equilibrium.
Answer:
Passive transport
Explanation:
The movement of ions across a cellular membrane without the need for energy input is known as passive transport. Diffusion is the passive movement of molecules from an area of high concentration to low concentration. Voltage describes the difference in electrical potential between two separate points, and isotonic movement describes the activity of a system at equilibrium.
PENN
In the presence of saturating amounts of oxaloacetate, the activity of citrate synthase from pig heart tissue shows a sigmoid dependence on the concentration of acetyl‑CoA. When succinyl‑CoA is added, the curve shifts to the right and the sigmoid dependence is more pronounced.
Choose the statements that are reasonable explanations for the right-ward shift of the velocity curve caused by succinyl-CoA.
a. Succinyl-CoA competes with dissociation of CoA as a product of the reaction.
b. Succinyl-CoA binds covalently to the enzyme.
c. Succinyl-CoA binds at a regulatory site other than the active site.
d. Succinyl-CoA competes with acetyl-CoA for binding at the active site.
e. Succinyl-CoA competes with oxaloacetate for binding at the active site.
Answer:
c. Succinyl-CoA binds at a regulatory site other than the active site
Explanation:
The sigmoid saturation curve is a property of of allosteric enzymes which reflects the cooperaive interactions between the protein subunits in the enzymes.
Allosteric enzymes function through reversible, non-covalent binding of regulatory compounds called allosteric modulators.
Allosteric enzymes have different binding site for the substrate and for their allosteric modulator.
In the citric acid cycle, succinyl-CoA serves as as allosteric inhibitor of citrate synthase which catalyses the production of citrate from oxaloacetate and acetyl-CoA.
From the given options:
a. Succinyl-CoA competes with dissociation of CoA as a product of the reaction is wrong because it has its own binding site as an allosteric modulator.
b. Succinyl-CoA binds covalently to the enzyme is wrong because allosteric enzymes functions through non-covalent interactions.
c. Succinyl-CoA binds at a regulatory site other than the active site is true because citrate synthase is an allosteric enzyme
d. Succinyl-CoA competes with acetyl-CoA for binding at the active site is wrong because acetyl-CoA binds to the active site while succinyl-Coa binds to the regulatory site.
e. Succinyl-CoA competes with oxaloacetate for binding at the active site is wrong because oxaloacetate binds to the active site while succinyl-Coa binds to the regulatory site.
Many farm animals used for meat are given antibiotics to promote their growth. What effect would this have on antibiotic resistance through time?
Answer:
It can lead to increased incidence of drug resistant bacteria.
Explanation:
Many farm animals used for meat are given antibiotics to promote their growth. They are also given these antibiotics to treat certain diseases caused by pathogenic microbes such as bacteria.
The continual use of antibiotics will however lead to increased incidence of drug resistant bacteria present in the world at large due to the exposure of the bacteria to these drugs resulting in the formation of resistant species of the bacteria with time .
How many more phases occur during meiosis than during mitosis?
none
two
four
six
Answer:
there are 4 more phases that occur during meiosis than mitosis
Answer:
The answer is.....
Explanation:
C. Four
Which interaction is an example of commensalism?
O A. Insects helping plants reproduce while eating the nectar in their
flowers
O B. Bacteria living inside a human's stomach and making the person ill
C. Birds building nests in the branches of trees
O D. Mosquitoes eating the blood of cows and passing on a disease
SUB
Answer:
C
Explanation:
Commensalism is where one organism benefits while the other is neither harmed nor benefited.
A - Both parties benefit
B - Bacteria benefit, the human is harmed
C - Birds benefit, the tree neither
D - Mosquitoes benefit, cow is harmed
3. List the molarities at which water exited the potato strips. Why did water move out of the potato strips? Were these solutions hypotonic, hypertonic, or isotonic?
Answer:
The water came out of the strips of the potatoes because a process of balance and oxygen balance called osmosis occurs.
Explanation:
The potato was subjected to a hypertonic environment and it is considered hypotonic, that is why the water seeks to go out to the outside in order to generate that it finds a balance in relation to a solvent solvent.
Which series correctly lists the eight taxonomic levels in order, from the broadest group to the most specific group? species, genus, family, order, class, phylum, kingdom, domain domain, kingdom, phylum, class, order, family, genus, species species, genus, family, class, order, phylum, kingdom, domain domain, kingdom, phylum, order, class, family, genus, species
Answer:
The correct answer is B.) domain, kingdom, phylum, class, order, family, genus, species.
Explanation:
domain, kingdom, phylum, class, order, family, genus, species make the most sense in this question
I also did the test and got it correct
:)
The series that correctly lists the eight taxonomic levels in order, from the broadest group to the most specific group is: domain, kingdom, phylum, class, order, family, genus, species.
What is taxonomic order?Taxonomic order refers to the systematic arrangement of organisms into a hierarchy of groups based on their shared characteristics and evolutionary relationships. Taxonomy is the science of identifying, describing, and naming species, and it helps to organize the diversity of life on earth into groups that reflect their evolutionary history.
The taxonomic order starts with the broadest category, the domain, and narrows down to the most specific category, the species. Each category represents a level of classification that shares certain characteristics, and the categories are nested within each other, forming a hierarchical structure.
The eight main taxonomic levels in order, from broadest to most specific, are domain, kingdom, phylum, class, order, family, genus, and species. This hierarchical system of classification helps scientists to better understand the relationships and diversity of organisms in the natural world.
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Below are two chemical equations. One is for cellular respiration and one is for photosynthesis. Correctly place the reactants and products in the right location to complete both equations.
Photosynthesis: H20 +H20------------->C6H12O6 +O2
+solar energy CO2
Cellular Respiration:O2+C6H1206 -------->CO2 + H2O
+02
Answer:
Photosynthesis: 6CO₂ + 6H₂O + solar energy ----> C₆H₁₂O₆ + 6O₂
Cellular Respiration: C₆H₁₂O₆ + 6O₂ ----> 6CO₂ + 6H₂O + ATP
Hope that helps.
The correct equation for cellular respiration and one for photosynthesis are:
Photosynthesis: 6CO₂ + 6H₂O + solar energy ----> C₆H₁₂O₆ + 6O₂
Cellular Respiration: C₆H₁₂O₆ + 6O₂ ----> 6CO₂ + 6H₂O + ATP
What is cellular respiration?Cellular respiration is a process of converting food into energy that can be used in many processes. It happens when oxygen is combined with food material and releases carbon dioxide as a waste product.
The correct reaction of photosynthesis is when carbon dioxide and water are combined with sunlight to form glucose and oxygen.
The correct reaction of cellular respiration is when glucose and oxygen react and release carbon dioxide and water and energy,
Thus, the correct reactions are:
Photosynthesis: 6CO₂ + 6H₂O + solar energy ----> C₆H₁₂O₆ + 6O₂
Cellular Respiration: C₆H₁₂O₆ + 6O₂ ----> 6CO₂ + 6H₂O + ATP
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Pine trees that are too tall or too short do not do as well as pine trees that are average in height. The short trees do not get as much light as tall or average trees. The tall trees are more likely to break off in storms. Tell how this is an example of stabilizing selection. Be sure to define stabilizing selection in your answer.
Answer:
Median height is selected
Explanation:
Stabilizing selection is a particular type of natural selection where the mean of the trait in the population stabilizes on non-extreme phenotypes, thereby favoring intermediate phenotypic variants. At genetic level, stabilizing selection is shaped by selective forces that push the distribution of the trait in the population toward the average (median trait), it is a condition that may happen when a population is completely adapted to its environment. Thus, stabilizing selection acts to purge the extreme phenotypic variants via purifying selection. Stabilizing selection is considered to be one of the most important mechanisms controlling the distribution of different phenotypes after many cycles of artificial selection, it s for that reason that breeders believe that this type of natural selection is the most common in nature.
Which of the following could be discovered by studying the gross anatomy of a cadaver?
The function of cells within the body
The types of cells within each organ
The function of the body's organs and systems
The structure of the body's organs and systems
Answer:
The structure of the body's organs and systems
Explanation:
In medicine, a cadaver is a dead human body dissected in order to study its anatomical structure. It is employed by medical students and other medical practitioners to study the structure of the human body.
Anatomy is a branch of science that has to do with the study of the structure of living organisms. Relating anatomy to cadaver, these dead bodies are dissected in order to view and study the structure of the different compartments of the body e.g organs, systems etc.
why the swimmer push the water backward
Answer:
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Explanation:
Swimmers push water backwards to propel forwards. In other words, swimmers push their hands and legs against water to move forward. This is stated in the third law of motion, for every action, there is an equal and opposite reaction.
1. One important feature of DNA is that it can be accurately copied and inherited from one generation to the next. Imagine if DNA was NOT accurately replicated. What errors could occur and how would they affect the offspring in the next generation
Answer:
Explanation:
If DNA is not accurately replicated it can lead to mutation. Mutation is a genetic disorder that occur when a change occur and affect the genome of an organism. It can be result in frameshift mutation shifting nucleotide arrangement.
When DNA is not accurately replicated, it could lead to formation of an entirely new protein different from the original which has a different function this could lead to a form of disorder in the offspring. The effect of this disorder depends on it severity.
Drag each tile to the correct box. Lucia is walking barefoot in her yard. She accidentally steps on a nail. How will her nervous system work to generate a reaction? Arrange the events chronologically. Interneurons relay the impulse to motor neurons in the spinal cord. She immediately moves her foot. The sensory neuron generates an impulse. Receptors in her toe receive stimuli. Motor neurons signal the leg muscles. ↓ ↓ ↓ ↓
Answer:
In order of steps we have
Receptors in her toe receive stimuli
The sensory neuron generates an impulse.
Interneurons relay the impulse to motor neurons in the spinal cord
Motor neurons signal the leg muscles.
She immediately moves her foot.
Hope this helps you
What is one way to classify mud found in an ecosystem? organism population biotic factor abiotic factor
Answer:
abiotic factor
Explanation:
Mud, while hosting many multicellular and unicellular organisms, simply refers to the combination of water and dirt, neither of which are living.
Answer:
abiotic factor
Explanation:
After the centromeres separate during mitosis, the sister chromatids, now called _______, move toward opposite poles of the spindle.
Answer:
(E) daughter chromosomes
Explanation:
In the process of urine formation:_____.
a. first filtrate is formed, then tubular fluid, then urine.
b. tubular fluid is formed, then filtrate, then urine.
Answer:
b i think is your answer
Explanation:
If we know that apatite is the mineral that makes up the enamel of our teeth, what physical properties might you want to know about apatite when determining how to make a good toothpaste
Answer:
It's solid and hard.
Explanation:
The form of apatite use in toothpaste is hydroxyapatite which is a natural occuring minerals that is made up ofcalcium phosphate. The majority of the enamel and dentin in your teeth is made from a form of hydroxyapatite. It form hexagonal crystals. Toothpastes that contain hydroxyapatite can help remineralize the enamel, reducing the risk of cavities and erosion. It's physical properties to know ( solid and hardness) help to strengthen or make the teeth bone strong and also give the bone rigidity.
Hemoglobin is the blood protein responsible for the transport of oxygen. Carbon monoxide disturbs oxygen transport by
Answer:
Answered below
Explanation:
Hemoglobin is found in the red blood cells and is responsible for the transportation of oxygen from the lungs to the various body cells.
Oxygen binds to hemoglobin because it has a high affinity for it. This aids its transportation. When it gets to the cells it unbinds and get transported into the cell for use in energy production.
Carbon monoxide is an odourless, dangerous gas which has more affinity for hemoglobin than oxygen. Therefore when carbon monoxide is inhaled, it quickly binds to hemoglobin, thereby displacing oxygen. It binds to hemoglobin for a longer period and due to this, the body does not get any oxygen and cells begin to die.
Symptoms of carbon monoxide poisoning include dizziness, headaches, fatigue and coma.
how many lactobacillyus present in 1 lire of curd packet
A genus of gram-positive, microaerophilic, rod-shaped bacteria occurring widely in nature. Its species are also part of the many normal flora of the mouth, intestinal tract, and vagina of many mammals, including humans. Pathogenicity from this genus is rare.
hope it helps
A plant is a
A one-celled eukaryote
B one-celled prokaryote
C multicellular eukaryote
D multicellular prokaryote
the answer should be c hope this helps:)
Answer: A plant is a multicellular eukaryote
Explanation:
Animals plants, fungi and protists are eukaryote. All multicellular organism are eukaryote. Eukaryotes may also be single-celled.
2. If a nucleus has 8 chromosomes, how many chromosomes will be present after Telophase I? 3. What advantage does crossing-over have in reproduction? 6. Compare and contrast spermatogenesis and oogenesis (where do they occur, how many gametes are formed, when do they develop, etc):
Answer:
Telophase I: 8 chromosomes composed of two sister chromatids
Crossing over refers to the mechanism of recombination, this process being characterized in that increases the genetic variation
Spermatogenesis refers to the mechanism of formation of male gametes (sperms), while oogenesis is the process of formation of female gametes (oocytes)
Explanation:
Telophase I is the final step in meiosis I. During telophase I, the nuclear membrane is formed around the decondensed set of chromosomes and the nucleoli reappear.
Spermatogenesis refers to the process by which haploid male germ cells (sperms) are generated within the seminiferous tubules in the testis, while oogenesis refers to the process of differentiation of the female egg cells (ova or oocytes) in the ovaries. Spermatogenesis is known to produce small and motile spermatic cells, while oogenesis is known to produce bigger non-motile oocytes.