Stem cells are a special kind of cells due to their ability to duplicate and differentiate in different kinds of cells.
there are different kinds of stem cells. The main diference betwen them is the kind of cells they can differentiate into.
for example, when an embrioyo is develoment, the firs cell that is form after the coito is a totipotent stem cell, because it has the ability to diferenciate in every kind of cell in the body. Afer a few weeks, in bovines it would be aroun 8 days, the cells become pluripotent, because they can generate every cell in the body, but the placent. and when we become adults this cells are know as mesechymal (multipotent), that are cells that can diferenciate in certain kind of tissue
Which unit represents speed?
A. newtons
B. miles per hour
C. joules
D. kilometers per second
Answer: B. miles per hour
Explanation:
A is wrong because it is a unit of physic.
C is wrong because it is unit for energy
D is wrong because second is not a unit for speed
If you can, please give me a Brainliest, I need 15 more to become a Genius; thank you!
I will mark brainliest: Why is important to reduce methane gas in the atmosphere?
the fastest opportunity we have to immediately slow the rate of global warming
Answer:
It slows global warming
Explanation: I took the test.
The moorish idol fish lives in coral reefs around the world. its oceanic environment is saltier than the environment inside its cells. the idol fish requires energy to maintain the environment in its cells. which structure in a moorish idol fish's cells produces the energy it needs?
The shape of a Moorish idol fish's cells produces the strength it needs is mitochondria.
Moorish idols are pelagic spawners; this is, they launch eggs and sperm inside the water column, leaving fertilized eggs to drift away with the currents. Moorish idols, Zanclus cornutus, prefer flat reefs in depths between three m – 182 m and may be observed in both clear and murky subtropical glasses of water, including internal lagoons, and rocky and coral reefs.
Moorish idols will often choose at massive polypod stony corals and certain gentle coral polyps. despite the fact that this fish commonly eats coralline algae and sponges in nature, this does not imply that it might not choose different styles of sessile invertebrates, or perhaps even motile crustaceans.
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which of the following statements is false? in its interaction with hemoglobin, oxygen is: i. reversibly bound. ii. a prosthetic group. iii. bound at the 6th coordination position of the fe(ii) ion in the heme. iv. homoallosteric effector. v. a ligand.
The statement "In its interaction with hemoglobin, oxygen is a prosthetic group." (i) is false.
Hemoglobin heme groups can contain four oxygen molecules because each iron atom has the potential to bond to one oxygen molecule. Hemoglobin can transport a maximum of four oxygen molecules because to the capacity of the iron atom in each heme group to attach one oxygen molecule.
Some proteins require a special non-protein component known as a prosthetic group in order to function. It is strongly bound to proteins. An organic lipid, vitamin, sugar, or an inorganic metal ion are examples of natural forms that a prosthetic group can take.
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Please help me with this
The contaminated water is the source of disease as well as pollution for the people and specially it is disease causing agent for the people and other organisms.
What is groundwater?Groundwater has been defined as the water present in the underground water just below the soil as well as in the crack of the earth. The percentage of the freshwater in the world has been 30%. There are mainly three types of the groundwater and these are hand-dug wells, springs, and drilled boreholes.
The water which has been stored under the ground are obtained from rain and stored in ground so that it can be used later. Ground water has been very clean and fit for drinking and the reason is the soil present on top and work as filter and the groundwater is free from all microorganisms.
Therefore, The contaminated water is the source of disease as well as pollution for the people and specially it is disease causing agent for the people and other organisms.
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a single cell with seven pairs of homologous chromosomes goes through meiosis 1. how many cells result at the end of meiosis 1? how many chromosomes exist in each cell? are the chromosomes in each cell duplicated or not?
At the end of meiosis I, there are two cells, each cell has seven chromosomes and the chromosomes in each cell are duplicated.
some features of meiotic division:
Meiosis I and Meiosis II are the two stages of nuclear and cellular division in which it occurs. However, DNA replication only occurs once.Recombination between homologous chromosome pairs is what it entails.At the end, four haploid daughter cells are produced.The diploid cell is transformed into a haploid one during Meiosis I, which separates the pair of homologous chromosomes. It is divided into prophase, metaphase, anaphase, and telophase stages.
Prophase I: The first stage of meiosis I, and it is made up of five stages: diplotene, leptotene, zygotene, pachytene, and diakinesis. homologous recombination occurs, which involves the exchange of DNA between paired chromosomes, and the crossover at chiasmata (singular: chiasma) between non-sister chromatids. The nuclear membrane and nucleolus break down at the conclusion of this stage.Metaphase I: Microtubules from opposite poles attach to the pairs of homologous chromosomes, and bivalents align at the equatorial plate.Anaphase I: The two bivalent chromosomes of each cell split and move to opposite ends of the cell. There is a connection between the sister chromatids.Telophase I: The nuclear membrane resurfaces, and cytokinesis follows. A pair of cells are formed as a result.Thus, Each daughter cell will have half of the original 7 Pair of homologous chromosomes i.e, 7 chromosomes which are duplicated.
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Frankie was selected as the commencement speaker for this year’s graduation and experiencing imposter syndrome. To help overcome their imposter syndrome, frankie begins to engage in positive self-talk. Before frankie practices the speech, they now say that they are an amazing speaker and have a lot of great ideas to share. What practice is frankie engaging to overcome imposter syndrome?.
Impostor syndrome is a psychological condition in which a person feels like a fraud and that they are not as skilled as other people think they are.
What is imposter syndrome?Imposter syndrome, to put it simply, is the sensation of being a fraud in some aspect of your life, notwithstanding any success you may have had there.
There is no recognized medical diagnosis for imposter syndrome. Instead, the phrase is most often used to refer specifically to achievement and intelligence, while it also has associations with social environment and perfectionism. In the 1970s, psychologists Suzanna Imes and Pauline Rose Clance coined this phrase.
Therefore, Impostor syndrome is a psychological condition in which a person feels like a fraud and that they are not as skilled as other people think they are.
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Explain why chlorophyll might be limiting factor for some plants...
Answer:
Since photosynthesis cannot begin without light, it is the first limiting factor.
Which of the following is an input to the light dependent reaction?
O Oxygen
OPyruvic acid
Water
Glucose
Answer: A class hypothesized that water pollution affects the growth of ... These reactions take the light-dependent reactions and perform further chemical.
66 pages
Explanation:
JESUS SAVES EVERYONE JUST PRAY, HE IS ALWAYS LISTINING !
What is the function of the cell membrane of this bacterium
A. To produce ADP
B. To form the only protective layer preventing damage from outside
C. To control entry and exit of substance
D. To synthesize proteins
C. To control entry and exit of substance
Answer: C. To control entry and exit of substance
Explanation: The whole purpose of a cell is tk regulate the transport of materials entering and exiting the cell so i presume c is the answer. You said "this baterium" so i asume that a picture was supposed to be sent with the question, to be safe i suggest you send the picture so we can make sure you get the correct answer.
the heart provides hydrostatic pressure which enables small molecules dissolved in water to passively flow through the capillary walls into surrounding tissues, leaving larger proteins and cells in the bloodstream. this transport mechanism is known as .
Small molecules dissolved in water to passively flow through the capillary walls into surrounding tissues, leaving larger proteins and cells in the bloodstream. this transport mechanism is known as Capillary Exchange.
Capillary exchange is the term used to describe the transfer of materials from the blood into the capillary's tissues. The amount of fluid that enters or exits the capillary is determined by the net filtration pressure, which is calculated as the total of the four pressures mentioned above. Blood hydrostatic pressure and interstitial fluid oncotic pressure both favor blood stream flow into the interstitium. For his second studio album, "," English singer-songwriter Ed Sheeran recorded the song "Bloodstream" (2014). Members of Snow Patrol, Rudimental, and Ed Sheeran wrote "Bloodstream," which was produced by Rick Rubin at Shangri-La in Malibu, California. [1] Sheeran is described in the song as consuming MDMA while partying at a wedding in Ibiza.
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you perform an experiment like that performed by fraenkel-conrat and singer on tmv. however, in the first step when the viruses are reconstituted, you decide to add rnase to your hr rna and wild-type proteins. what will be the content of the newly made viral proteins after the reconstituted virus is placed on leaves?
The protein will contain histidine and methionine will be the content of the newly made viral proteins after the reconstituted virus is placed on leaves.
What does protein do in the body?Protein is present in every human cell. The amino acid chain makes up the basic building block of proteins. In order for the body to repair damaged cells and create new ones, you require protein in your food. Children, teenagers, and expectant women all need proteins for healthy development and growth.
Can you live without protein?However, since we cannot store protein, we can only go up to 70 days without any protein. Protein is indeed the sole nutrient that we must consume consistently in order to flourish since we can't produce this from scratch and we can't store extra.
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Moving very large molecules out of the cell using a vesicle from the cell membrane is known as?
Answer: exocytosis
Explanation:
- When molecules are too large or too charged to cross the plasma membrane by diffusion or osmosis, they use vesicular transport, also known as exocytosis. In vesicular transport/exocytosis, vesicles allow large molecules to exit the cell because the vesicle fuses with the plasma membrane and its contents spill out.
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what are some examples of mesophytes xerophytes
Answer:
Plants adapted to dry, hot and arid climates are considered xerophytes. Examples include the entire yucca family, acacia trees, and mesquite trees.
Since mesophytes prefer moist, well drained soils, most crops are mesophytes. Some examples are corn (maize), cucurbits, privet, lilac, goldenrod, clover, and oxeye daisy.
ASAP Summarize the lytic cycle.(1 point)
Responses
A virus copies its genetic material and then splits its cell membranes in half to form identical viruses.
A virus injects its genetic material into the host cell, copies itself, and then forms new viruses that burst out of the host cell.
A virus lays eggs on the host cell’s protein coat, which then hatch and move on to infect other cells.
The viral DNA incorporates itself with the host cell and replicates whenever the host cell replicates itself.
Answer:
A virus injects its genetic material into the host cell, copies itself, and then forms new viruses that burst out of the host cell.
Explanation:
There are two cycles of viral replication.
1. Lytic
2. Lysogenic
The lytic cycle involves the destruction of the cell to release viral particles.
The lysogenic cycle incorporates the DNA into the host's genome and the DNA is replicated when the cell replicates. This cycle can turn into the lytic cycle in a process called induction.
When heart muscles cells are deprived of oxygen, the heart still pumps for some time. What must the heart cells be able to do?.
Answer:
derive sufficient energy from fermentation
When heart muscle cells are deprived of oxygen, they can still continue pumping for a short period due to their ability to generate energy through anaerobic metabolism.
The heart cellsHeart muscle cells have the capacity to produce energy through anaerobic metabolism, which allows them to continue pumping for a brief amount of time when oxygen is not present. A limited quantity of energy is produced via anaerobic metabolism, a process that takes place without oxygen and supports temporary cellular processes.
Heart muscle cells predominantly utilise oxygen during aerobic metabolism (when oxygen is present) to make ATP (adenosine triphosphate), the main source of energy for cells. Aerobic metabolism, however, cannot be maintained when the oxygen supply is insufficient, such as when a coronary artery suddenly blocks, resulting in a heart attack.
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Proteins function best under specific pH and temperature. This is called their optimal. Which of the following are NOT true statements? Select all that apply.
Responses
Proteins all have the same function because they have the same structure.
Proteins have different function but are all the same structure.
Proteins have different structures that lead to different functions.
Proteins can change their structures to fit the desired functions.
Answer: The first two are wrong. The unique chain/sequence of amino acid monomers that form a polypeptide monomer are what fold the protein into its UNIQUE shape. Proteins can be modified in the golgi apparatus to best suit their function.
(a level answer)
More energy can be released from fat molecule than from glucose molecule because the fat molecule contains more
Answer:
chemicals bonds
Explanation:
the more bonds, the more energy released!
how do shoebills respond to changes in external temperature when it's too cold
The adaptation of shoebills responds to changes in external temperature when it's too cold in their environment.
What changes occur to Shoebills in cold?Shoebills have adapted long toes with no webbing which helps them to balance on the swampy vegetation while stalking prey. There are few predators of shoebill storks. Young and eggs may be taken by nest predators but shoebill storks can defend their young and build nests in areas unreachable to many predators. Shoebills eat big fish such as lungfish and catfish This bird eats crocodiles and they hunt like bosses of the swamp. The Shoebill will stand there motionless like a statue. Some birds fluff up their feathers and open up their wings to catch a breeze that helping them cool.
So we can conclude that If the temperature is very cold then the Shoebill can't go outside.
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in drosophila, an ncrna called rox is involved in dosage compensation. rox is part of the msl complex, which binds to the x chromosome and recruits histone-modifying enzymes to the chromatin. rox is required for the msl to bind to the x chromosome. what function is this ncrna playing?
In Drosophila, an ncRNA plays a crucial role in directing Rox RNA and its non-coding genes for protein production.
RoX RNA can be a non-coding RNA (ncRNA) shown inside the male-specific dangerous (MSL) complex and is required for sex estimation compensation in Drosophila.
This can be fulfilled by the MSL complex official to the X chromosome and inciting histone H4 lysine 16 acetylation and licenses for the course of action of euchromatin. These ncRNAs were, to start found in RNA removed from neuronal cells.
Two roX RNAs have been recognized inside the MSL complex from Drosophila melanogaster and have shown up to be directed over different drosophila species.
The two roX RNAs, known as roX1 and roX2 have been shown up to differentiate in the basic course of action and course of action length but despite these contrasts, they both contain an MSL definitive area and are essentially redundant.
Cloning roX qualities and resulting gathering course of action from a few unmistakable drosophila species recognized some directed districts and it was moreover taken note that roX RNA is because it appeared in male flies.
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a phagehunter plates 4000 phage particles onto a pyca plate with gordonia terrae. the burst size of the phage is 50 phage particles per round of replication. after one round of replication, how many phage particles are present on this plate?
The number of phage particles present on this plate is 50 Million phages.
When a plague started with one phage, after 1st round of replication it will produce 10 virus particles. After another round, each of the 10 viruses will produce 10 virus particles each, totaling 100 particles. And then after 3rd round, each of the 100 phages will produce 10 each = 1000 phages. So, (10)^3
Initially, 400 phages are present, and the burst size is 50., After 3 rounds, the number of phages will be = 400× (50)^3
= 50 Million phages.
DNA replication is the procedure via which a double-stranded DNA molecule is copied to provide identical DNA molecules. Replication is an essential method because, each time a mobile divides, the two new daughter cells must comprise the same genetic information, or DNA, as the discern cell.
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where does pre-mrna splicing occur in a eukaryotic cell? question 7 options: in the nucleus in the golgi apparatus in the rough er in the cytoplasm in the lysosome
Pre-mRNA splicing occurs in nucleus in a eukaryotic cell.
What is RNA splicing?
RNA splicing is the process in molecular biology that converts a newly produced precursor messenger RNA transcript into a mature messenger RNA. To make it work, exons must be re-joined after all introns have been deleted.
the method by which exons (i.e., coding sections) are linked together to form mature messenger RNA while introns, the non-coding portions of genes, are removed from the primary messenger RNA transcript. The latter acts as a model for the creation of a particular protein.
Transcription and RNA (which involves splicing) of the newly synthesized mRNA takes place in the nucleus thereafter mature mRNA transcript is transported to the cytoplasm for translation.
Hence the correct answer is the nucleus.
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researchers often want to isolate a certain type of rna. for some rna species, this can be accomplished via affinity chromatography, using beads coated with chains of poly-deoxythymidine (poly-dt). the desired rna will stick to the beads while unwanted rnas will flow through the column. the retained rna can then be eluted. what rna species can be purified using this method? researchers often want to isolate a certain type of rna. for some rna species, this can be accomplished via affinity chromatography, using beads coated with chains of poly-deoxythymidine (poly-dt). the desired rna will stick to the beads while unwanted rnas will flow through the column. the retained rna can then be eluted. what rna species can be purified using this method? eukaryotic mrna eukaryotic rrna bacterial mrna bacterial rrna
According to the given statement Eukaryotic mRNA species can be purified using this method.
The correct option is C.
What is an eukaryotic ?Any cell or organism that has a distinct nucleus is said to have been eukaryote. The nucleus of a eukaryotic cell, which contains a well chromosomes (bodies holding the genetic material), is protected by a nuclear membrane.
What are eukaryotic cells made of?Eukaryotic cells can also have other organelles outside the nucleus, such as mitochondria, plastids, the endoplasmic, the Golgi apparatus, and lysosomes. Each of these organs carries out a distinct task that is essential to the survival of the cell.
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The complete question is -
Researchers often want to isolate a certain type of RNA. For some RNA species, this can be accomplished via affinity chromatography, using beads coated with chains of poly-deoxythymidine (poly-dT). The desired RNA will stick to the beads while unwanted RNAs will flow through the column. The retained RNA can then be eluted.
What RNA species can be purified using this method?
A. bacterial mRNA
B. bacterial rRNA
C. eukaryotic rRNA
D. eukaryotic mRNA
______ is a specialized type of cell division that produces cells that are genetically different from each other.
Meiosis is a specialized type of cell division that produces cells that are genetically different from each other.
Cell division is the process through which all cells are created from other cells. Meiosis is a specific type of cell division that generates reproductive cells like sperm and egg cells as well as plant and fungus spores. A "parent" cell generally divides into two or more "daughter" cells during this process. The parent cell can transmit its genetic material in this manner from generation to generation.
Meiosis is a specific type of cell division that takes place in sexually reproducing organisms. It generates reproductive cells like sperm, egg, and spores in plants and fungi, as was previously indicated. In humans, germ cells go through a process called meiosis to develop into sperm or eggs.
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learning is a result of changes in the strengths of synapses. which of the following is an example of something that would increase the strength of a synapse? group of answer choices increase in blood flow increase in the size of the action potentials increase in myelination increase in the number of receptors on the postsynaptic side of the synapse
One example of something that can increase the strength of a synapse is an increase in the number of receptors on the postsynaptic side of the synapse.
Explanation:
A synapse is a meeting point between the axon terminal of one neuron and another. Synapses are formed by swollen axon terminals. Inside the synaptic cytoplasm, there are synaptic vesicles. When the impulse reaches the end of the neuron, the vesicles move, then fuse with the pre-synaptic membrane and release acetylcholine. Acetylcholine diffuses through the synaptic cleft and attaches to receptors on the postsynaptic membrane. The attachment of acetylcholine to the receptor triggers an impulse in the next nerve cell. The enzyme acetylcholinesterase breaks down acetylcholine whose job is done.
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PLSSS HELP IF YOU TURLY KNOW THISS
Answer:
C some plants
Explanation:
if the original dna sequence is 3' - gtt tac ctc tcc gac atc - 5' [template strand] 5' - caa atg gag agg ctg tag - 3' [coding/non-template strand] a point mutation occur and change the sequence to 3' - gtt tac atc tcc gac atc - 5' [template strand] 5' - caa atg tag agg ctg tag - 3' [coding/non-template strand] what type of mutation is this?
The given type of mutation is nonsense mutation which results from point mutation.
A nonsense mutation in a DNA sequence causes a premature stop codon, also known as a nonsense codon, in the transcribed mRNA as well as a shortened, ineffective, and typically nonfunctional protein product.
As was mentioned previously, a nonsense mutation happens when a stop codon replaces an amino acid's codon. A shortened and typically nonfunctional protein is the result of this mutation. By altering a tRNA molecule's anticodon sequence such that it recognizes the stop codon instead of the start codon, such a deficiency may be at least partially repressed.
Therefore, the given type of mutation is nonsense mutation which results from point mutation.
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How would the structure of nucleotides in a dna molecule affect the structure of amino acids in a protein
DNA determines which amino acids make a protein by the combination of three nucleotides. Each set of three nucleotides is called a codon and each codon corresponds to a particular amino acid, although an amino acid can be coded by multiple codons because there are only 22 aminoacids.
This is known as the genetic code:
WHAT'S THE ANSWER??
in drosophila, a key step in initiating the dorsal-ventral body axis involves follicle cells building a signal into the eggshell. which follicle cells create a functional signaling molecule?
The follicle cells create a functional signaling molecule is ventral follicle cells.
What is a dorsal-ventral axis?The dorsal/ventral axis is defined as a line that is perpendicular to the anterior/posterior and left/right axes. An organism's dorsal end is located on its top or back. The ventral end of an organism is defined by its bottom or front side.
In Drosophila embryos, the formation of the dorsal-ventral pattern is dependent on a signaling mechanism in which a putative extracellular ligand released into the area around the embryo known as the perivitelline space binds to the Toll receptor.
The focus protein in the dorsoventral polarity development of the developing fly is called dorsal (DL). It is a transcription factor that regulates the expression of zygotic genes necessary for early development along the dorsoventral axis.
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