3. The Kinetic Theory describes the ____
all matter
of particles in
all matter
Answers
Related Questions
if a somatic cell from a cat contains 40 picograms of dna during g2 of interphase, how many picograms of dna would be present in each cell during metaphase ii of meiosis? (enter the number only, not the units)
Answers
Using the theories of cells, we got that 20 picograms of dna would be present in each cell during metaphase of meiosis if a somantic cell from a cat contains 40 picograms of dna during g2 of interphase is used.
The cell is actually the basic structural and functional unit of life forms. Every cell consists of the cytoplasm enclosed within a membrane, and contains many biomolecules such as the proteins, DNA and RNA, as well as many small molecules of nutrients and the metabolites.[1]
Cells can easily acquire specified function and carry out various tasks within the cell such as replication, DNA repair, the protein synthesis, and motility. Cells are capable of specialization and the mobility within the cell. Most cells are measured in micrometers due to the small size.
Hence, if a somatic cell from a cat contains 40 picograms of dna during g2 of interphase, 20 picograms of dna would be present in each cell during metaphase ii of meiosis.
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Someone plz help me :(
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. What binds the allosteric site of Pyruvate dehydrogenase when Oz levels are low in the cell? O NADH O pyruvate 02 O CO2 O FADH2
Answers
Allosteric site of Pyruvate dehydrogenase when Oz levels are low in the cell is bind by B. Pyruvate
Pyruvate dehydrogenase is the enzyme responsible for catalyzing the conversion of pyruvate to acetyl-CoA. Pyruvate dehydrogenase is inhibited when oxygen levels are low in the cell. The enzyme is regulated by phosphorylation by pyruvate dehydrogenase kinase and dephosphorylation by pyruvate dehydrogenase phosphatase. The allosteric site of pyruvate dehydrogenase kinase is bound by NADH, acetyl-CoA, and ATP, while the allosteric site of pyruvate dehydrogenase phosphatase is bound by ADP.
These binding sites help regulate the activity of pyruvate dehydrogenase in response to changes in the energy status of the cell. The allosteric site of Pyruvate dehydrogenase when Oz levels are low in the cell is bound by NADH. When oxygen levels are low, there is an increase in NADH concentration due to the lack of aerobic respiration and the buildup of pyruvate. NADH acts as a negative regulator of pyruvate dehydrogenase by binding to its allosteric site, inhibiting its activity. So therefore the correct answer is B. Pyruvate is bind allosteric site of Pyruvate dehydrogenase when Oz levels are low in the cell .
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Water is an excellent solvent mainly because:
A.it can dissolve other substances
B.water molecules are uncharged
C.it is a liquid
D.objects can float in it
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Answer:
Water is said to be a universal solvent because it can dissolve many other substances ( than other solvents)What type of membrane lines cavities that open to the outside of the body?.
Answers
Answer:
Mucous membranes
Explanation:
A human’s knee joint is best described as
Answers
Answer:
A synovial joint
Explanation:
because it is highly moveable, allows for flexibility, has ligaments for stability, and has cartilage for protection of the articulating bones. ... It is a synarthrosis joint because it cannot move.
Answer:
synovial joint
Explanation:
I hope it's helpful for youwhich efferent pathway has a single nerve fiber extending from the cns to effector? multiple choice question. somatic visceral autonomic
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Option A, From the CNS to the effector, a single nerve fiber makes up the somatic efferent route in nervous system.
Skeletal muscles are the effectors of the somatic nervous system. Efferent neurons, sometimes referred to as motor neurons, are part of the somatic nervous system CNS and carry nerve fiber impulses from the central nervous system to the body's skeletal muscles. Motor impulses for the skeletal muscles are delivered by the somatic nervous system, also known as the somatomotor or somatic efferent neural system. nerve fiber is frequently referred to as the voluntary nervous system since these nerves provide conscious control of the skeletal muscles.
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HELP!!!! The diagram below shows a portion of the water cycle. What does Y most likely represent
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Answer:
Y most likely represents springs.
which of the following is likely to cause the precipitation of lime out of a water solution? a) photosynthesis in heat-loving algae b) rain falling out of clouds c) reduction of temperature and pressure d) water squeezed into rock joints e) sublimation of liquid water
Answers
C) Reduction of temperature and pressure is likely to cause the precipitation of lime out of a water solution.
To precipitate limestone add the lime to water to form calcium hydroxide to from hydrated lime or slake. Remove additional impurities from the slaked lime. Combine the solution with carbon dioxide and slaked lime.
In general ,When limestone is heated, calcium oxide and carbon dioxide gas are formed. When carbon dioxide gas is passed through freshly prepared lime water, the solution turns milky due to the formation of calcium carbonate, that is not soluble in water.
Hence, C is the correct option
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what type of membrane protein transmits information into the cell by responding to signal molecules
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Receptor proteins are membrane proteins that respond to signal molecules to transfer information into the cell.
These proteins subsequently trigger intracellular signalling pathways by binding to substances like hormones, neurotransmitters, or growth factors. Ionotropic and metabotropic receptors are the two groups into which receptors fall.
Ions can enter or leave the cell through ionotropic receptors, which are generally ligand-gated ion channels that open or close the gate when attached to a ligand. Contrarily, when attached to a ligand, G-protein coupled receptors (GPCRs) called metabolotropic receptors trigger signalling pathways.
These receptors are crucial participants in cellular communication because they may link to various G proteins and activate various signalling pathways.
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WIll GIVE BRAINLIEST!!!!
Answers
Answer:
Both A and B
Explanation:
This was on my test today and I got it correct.
In eukaryotic cells, ribosomes are located in the
a
nucleus
b
cytoplasm
Answers
Answer:
Cytoplasm
Explanation:
Nucleus was my original answer but I'm actually wrong. It is not the nucleus.
Answer:
B) cytoplasm
Explanation:
I am not 100% sure but i think it´s B
which type of nephron plays the more important role in establishing a salt concentration gradient
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The cortical nephrons and the juxtamedullary nephrons, play important roles in establishing a salt concentration gradient in the kidneys.
The cortical nephrons are chargeable for the majority of the filtering and reabsorption of water and ions inside the kidney. They may be located generally in the outer area of the kidney and feature shorter loops of Henle, which do now not penetrate deeply into the medulla.
These nephrons play an important position in setting up the initial salt concentration gradient by means of actively transporting sodium and chloride ions out of the filtrate in the proximal and distal convoluted tubules.
But, the juxtamedullary nephrons, positioned in the internal vicinity of the kidney, have lengthy loops of Henle that enlarge deeply into the medulla.
This enables them to establish a steep salt awareness gradient by using actively transporting sodium and chloride ions out of the filtrate within the thin descending and ascending limbs of the loop of Henle. This gradient is important for the production of concentrated urine, as it lets in for the reabsorption of water inside the gathering ducts.
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How can conservation help endangered species?
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Answer: We can help endangered species through conservation. This means doing things – maybe even changing the way we do things – to make sure plants and animals are protected
Explanation: Some of the most endangered animals in the world include the giant panda, the Siberian tiger, the Sumatran rhinoceros, the right whale, and the polar bear.
snapping shrimp have evolved very rapid movements in the structures they use to capture prey. these rapid movements, which evolved through natural selection, can be considered a(n) , and the process by which they evolved is called .
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Snapping shrimp have evolved very rapid movements in the structures they use to capture prey. These rapid movements can be considered a(n) adaptation, and the process by which they evolved is called positive selection.
The snapping shrimp closes its claws quickly, creating a shock wave.
The snapping shrimp makes a snapping sound by quickly closing the large red snapper's claws, which are about 2.8 cm long. The claws have butts protruding on the dactyl and sockets matching the propus.
A recently discovered pistol shrimp crackling called Synalpheus pinkfloydi (named after something else, which is also big and very cool is Pink Floyd) can reach 210 decibels. This is louder than the actual shot, about 140-175 decibels.
Positive natural selection, or the tendency of beneficial traits to increase in prevalence (abundance) within a population, is the driving force behind adaptive evolution.
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Please helpppp this is for biology 1
when an egg is soaked in vinegar and then dipped in corn syrup is it hypotonic or isotonic?
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Answer:
Water is known as hypotonic, ie. very dilute and contains more water than the egg. If instead you place the vinegar soaked egg in corn syrup you will see the opposite. There is a much higher water concentration in the egg than in the syrup so water will pass in the opposite direction.
The ________ bone is unusual because it doesn't contact another bone.. A) vomer
B) lacrimal C) hyoid D) atlas E) ethmoid
Answers
The hyoid bone is a unique bone in the human body because it does not contact another bone.
Correct option is C.
The hyoid is a small, U-shaped bone located at the base of the tongue in the neck. It is held in place by muscles, ligaments, and tendons, and is not connected to any other bone. This bone has several important functions. It serves as an attachment point for the muscles involved in speaking, swallowing, and breathing.
It also provides support to the larynx, or voice box, and plays a role in keeping the airway open. The hyoid is important for normal movement and positioning of the tongue and head as well. This bone is located near the spine and is sometimes used to assess the neck's range of motion.
Correct option is C.
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Which model of speciation describes when a population suddenly evolves quickly, usually in response to new environmental pressures?
The fast evolution model
The gradual speciation model
The change over time model
The punctuated equilibrium model
Answers
Answer:
I believe it is A) The fast evolution model
Explanation:
Because
If a female fruit fly with mutant white eyes and a wild-type brown body (w y+/w y+) is crossed with a male fruit fly that has wild-type red eyes and a mutant yellow body (w+ y/Y), what will the male offspring look like?
Answers
The male offspring will have wild-type red eyes and a mutant yellow body (w+ y/Y). Therefore, all male offspring will inherit a wild-type allele for eye color from the male parent and a mutant allele for body color from both parents.
This is because the male parent carries a dominant wild-type allele for eye color (w+) and a recessive mutant allele for body color (y), while the female parent carries two recessive mutant alleles for eye color (w y) and a dominant wild-type allele for body color (w+).
Since none of the offspring will possess the y allele from the male parent that is necessary for the forked bristles phenotype, the frequency of grey with red eyes and forked bristles progeny is zero.
We must first ascertain the potential gametes that can be produced by each parent in order to anticipate the frequency of the grey with red eyes and forked bristles progeny produced by the specified cross.
The y+w+f/ywf+ genotype describes the wild-type female as having one X chromosome with the y+w+f allele and one X chromosome with the ywf+ allele. Each gamete that she creates will only contain one of these X chromosomes.
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To generate a knockout mouse cell line, the best strategy is to use the base excision repair pathway. a) True b) False
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The given statement "To generate a knockout mouse cell line, the best strategy is to use the base excision repair pathway" is false. A knockout mouse is a genetically modified mouse that is missing one or more genes to investigate their function.
The gene that has been knocked out is called a knockout gene. Knockout mice are useful for studying the role of genes in physiology, development, and disease, as well as for validating the therapeutic potential of novel drugs. Knockout mice can be generated through various methods, including homologous recombination, gene editing using CRISPR/Cas9, and gene trapping. These methods all aim to disrupt the function of a specific gene within the mouse genome. The base excision repair (BER) pathway is one of many DNA repair pathways present in cells, which repairs DNA damage caused by the modification of a single nucleotide in the DNA chain.
Base excision repair pathway is not a strategy used to generate knockout mouse cell lines. Although it can be employed to introduce mutations into a specific gene in the mouse genome. The strategy to generate knockout mouse cell lines is homologous recombination, which is the insertion of a modified DNA sequence into the mouse genome, resulting in the disruption of a specific gene's function.
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can trees and plants cause soil erosion?
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Answer:
no
Explanation:
it will not cause soil erosion because tree or plant root will handle it very strongly
Which methods of transport across the cell surface membrane would be inhibited by antimycin? 1 active transport. 2 facilitated diffusion. 3 endocytosis
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Antimycin inhibits the process of active transport across the cell surface membrane. The correct answer is 1.
Active transport is a method of transporting substances across the cell surface membrane against their concentration gradient, meaning that they are moved from an area of lower concentration to an area of higher concentration.
This process requires energy in the form of ATP, which is produced by the electron transport chain in the mitochondria. Antimycin is a chemical that inhibits the electron transport chain, preventing the production of ATP and therefore inhibiting active transport across the cell surface membrane.
Facilitated diffusion and endocytosis, on the other hand, are not affected by antimycin. Facilitated diffusion is a passive process that does not require energy, and endocytosis is a process that involves the formation of vesicles, which is not directly dependent on the electron transport chain.
Therefore, the correct answer is 1. Active transport.
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During prometaphase, which protein complex on each sister chromatid attaches to the spindle?.
Answers
Each sister chromatid uses a protein complex termed the kinetochore to connect to spindle microtubules at the centromere.
Sister chromatids are bound to one another during mitotic prometaphase, but why?Cohesion is necessary for sister chromatids to stay together during mitosis and meiosis until separation is about to occur at anaphase. Cohesins are multiprotein component complexes that help create cohesion during DNA replication prior to mitosis and meiosis.
During prometaphase, where do microtubules bind to sister chromatids?kinetochoresThe production of a protein structure known as a kinetochore around the centromere, the central region connecting the sister chromatids, is another significant process that occurs during prometaphase. Kinetochore microtubules are lengthy protein filaments that extend from the cell's poles at each end and connect to the kinetochores.
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while searching for spiders at six sites, the scientists came across the following number of species: 2, 4, 8, 5, 3, 1 what do these numbers indicate?
Answers
The 2, 4, 8, 5, 3, and 1 obtained from spider hunting at six different sites can be associated with the number of species found. Therefore, these numbers signify the different numbers of spider species identified at six different sites.
The numbers are the result of the data collected by the researchers while searching for spiders at six different sites. The given numbers represent the following species found at each site:
Site 1 = 2 speciesSite 2 = 4 speciesSite 3 = 8 speciesSite 4 = 5 speciesSite 5 = 3 speciesSite 6 = 1 speciesTherefore, these numbers indicate the number of species present at each site visited by the scientists during their spider hunt.
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Etiology and Infectious Disease
This activity asks you to match each key term related to etiology and infectious disease with its description. Match to etiology, infections disease, germ theory of disease, or Koch's postulates.
Based on the information contained in the introduction, match each of the following concepts with its best description.
1. The study of the cause of a disease
2. disease directly caused by microorganisms and not by other means, for example, genetic or degenerative diseases
3. this theory states that microorganisms cause infected diseases
4. experimental requirements for identifying the agent of an infectious disease
Answers
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11. Below your job is to describe the relationship between DNA, X
protein, and trait. Do this by making a claim of which person you are A or B based on
your trait. Give evidence (chart above) and reason to describe the relationship between
DNA, protein and trait. (trait is a taster or nontaster)
Answers
Taste perception is largely determined by the presence or absence of a specific protein called TAS2R38, which is encoded by a gene in the DNA. The TAS2R38 gene has two common variants, known as PAV and AVI.
What is a Taste ?Taste is one of the five basic senses, which allows us to distinguish and perceive different flavors and sensations when we eat or drink. It is the sensory perception of substances that come into contact with the taste buds on our tongue, which contain specialized cells that can detect different types of molecules in food or drink. There are five primary taste sensations: sweet, sour, bitter, salty, and umami (savory), which are each detected by different types of taste buds. The combination of these different taste sensations creates the overall taste perception of a food or drink. Taste perception can also be influenced by factors such as smell, texture, and temperature.
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How do bees make honey? (for my project)
Answers
Answer:
Bess make honey by collecting pollen or nectar then moisture by passing it mouth-to-mouth until the nectar turns into honey.
Explanation:
"Most bees gather only pollen or nectar. ... When her nectar “sacs” are full, the honeybee returns to the hive. Nectar is delivered to one of the indoor bees and is then passed mouth-to-mouth from bee to bee until its moisture content is reduced from about 70% to 20%. This changes the nectar into honey."
(Sorry if this doesn't make sense)
In the sarcomere which elastic protein attaches the thick filament to the Z line?
a. titin
b. actin
c. G actin
d. nebulin
e. myosin
Answers
The correct answer is A, titin. Titin is a giant protein that spans half of the sarcomere, from the Z line to the M line. It acts as a molecular spring and provides elasticity to the sarcomere.
Titin is also known as connectin, as it connects the Z line to the M line, and helps to stabilize the thick filament in its central position. Nebulin, on the other hand, is an elongated protein that runs along the length of the thin filament, and acts as a ruler to determine the length of the actin filament. Actin and G actin are both proteins that make up the thin filament. Myosin is a protein that makes up the thick filament, and is responsible for the sliding of the filaments during muscle contraction.
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If you described a protein that was coiled, you would be describing its... Group of answer choices primary structure secondary structure tertiary structure quaternary structure
Answers
Answer:
secondary structure
Explanation:
the secondary structure is the coiling/folding of a polypeptide chain. The two types of secondary structures are alpha helix and beta pleated sheet. The alpha helix structure is is a spiral structure and is tight and twisted. The beta pleated sheet has a structure that is in zig-zags.
Explain how to distinguish different species by their DNA.
Answers
DNA analysis can be used to distinguish different species by comparing specific regions of their DNA sequences.
To distinguish different species by their DNA, scientists primarily focus on comparing specific regions of the DNA sequences that are highly variable among species. One commonly used region is the mitochondrial DNA (mtDNA), which is inherited maternally and has a higher mutation rate compared to nuclear DNA. Another region is the ribosomal RNA genes (rRNA), which exhibit variations among species.
The process typically involves extracting DNA samples from different organisms, isolating the target region of interest, and sequencing the DNA to determine the nucleotide sequence. The sequences obtained from different species are then compared to identify differences and similarities.
These differences can be used to create DNA profiles or genetic markers specific to each species. Advanced techniques such as DNA barcoding or whole-genome sequencing can provide more comprehensive information and aid in species identification.
By comparing DNA sequences, scientists can uncover genetic variations unique to different species, allowing them to distinguish and classify organisms accurately. This information is valuable in various fields, including taxonomy, conservation biology, forensic science, and evolutionary research.
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