Why does the weather change suddenly when air masses collide
Answers
Answer: Because warm air is less dense than cold air.
Explanation: the warm air rises as it runs into the cold air, which is followed by condensation and cloud-forming.
Related Questions
Is there a 100% chance that the puppies will have solid fur?
Answers
which profession requires more screen contact law or medicine ?
please answer quickly because I have to select my career .
Answers
just ask ur teacher she or he will tell u
What characteristic of fast nerve fibers permits them to transmit signals perceived as sharp, immediate pain
Answers
Fast nerve fibers transmit signals perceived as sharp, immediate pain because of their ability to carry impulses at high speeds.What are nerve fibers.
A nerve fiber is an elongated axon or dendrite that serves as the primary transmission pathway for electrical and chemical signals between neurons. Axons are the longest nerve fibers, while dendrites are the shortest. Depending on the speed at which they carry signals, nerve fibers can be classified into two types: fast nerve fibers and slow nerve fibers. Fast nerve fibers are myelinated axons that conduct impulses at high speeds. The myelin sheath covering fast nerve fibers ensures that electrical impulses travel quickly and smoothly down the nerve.
Myelin sheath insulates the axon, allowing for rapid saltatory conduction of impulses along the axon. Fast nerve fibers have a diameter ranging from 1 to 22 micrometers and carry impulses at speeds up to 120 meters per second (268 mph).In conclusion, the characteristic of fast nerve fibers that permits them to transmit signals perceived as sharp, immediate pain is their ability to carry impulses at high speeds due to the myelin sheath covering their axons.
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Which of the following is true about ECT today?
(1 Point)
A.Patients experience severe pain during the shocks.
B.It is applied to both hemispheres of the brain.
C.Doctors prefer to use it first, before trying drug therapy.
D.It brings no discomfort to the patient.
Answers
Answer: B. It is applied to both hemispheres of the brain.
Explanation:
ECT or electroconvulsive therapy is the treatment which is given for the treatment of depression, mental depression, suicidal patients, and others. In bilateral process one electrode is applied on the left and other on the right side of the brain. This way both hemispheres get the electrical treatment. Hippocampus and amygdala are two parts of the brain which are targeted in this process. These parts control the memory and emotion.
the three main biochemical pathways of cellular respiration are
Answers
The three main Biochemical pathways of cellular respiration are the glycolysis, the Krebs cycle and the last is electron transport chain.
Glycolysis is the metabolic pathway that breaks down glucose into two motes of pyruvate, releasing energy in the form of the ATP and NADH. The Krebs cycle is the eight step cycle that takes place in the mitochondria and that mainly involves the oxidation of acetyl- CoA, producing NADH, FADH2 and ATP. The electron transport chain is the series of redox responses that take place in the inner of the mitochondrial membrane, which use the energy from the NADH and FADH2 to produce ATP.To know more about Biochemical pathways visit:
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20. The five recognized periods of mass extinction have- *
Answers
Answer:
1. Ordovician Mass Extinction (about 44o million years ago)
2. Devonian Mass Extinction (about 375 million years ago)
3. Permian Mass Extinction (about 250 million years ago)
4. Triassic-Jurassic Mass Extinction (about 200 million years ago)
5. Cretaceous-Tertiary Mass Extinction (about 65 million years ago)
Explanation:
Form a bond between monomers to create molecules like polymers and other ___ required by the body.
Answers
Forming bonds between monomers creates molecules such as polymers and other essential compounds needed by the body.
In biological systems, monomers are individual subunits that can be linked together through chemical reactions to form larger, more complex molecules. One important class of molecules formed by bonding monomers is polymers. Polymers are large molecules consisting of repeating subunits called monomers. These polymers play crucial roles in the body, serving as structural components, energy sources, and signaling molecules. Examples of polymers essential for the body include proteins, nucleic acids (DNA and RNA), and polysaccharides (complex carbohydrates). Proteins are composed of amino acid monomers, linked by peptide bonds, and are involved in various biological functions such as enzyme catalysis, cell signaling, and structural support. Nucleic acids, composed of nucleotide monomers, store and transmit genetic information. Polysaccharides, formed by linking sugar monomers, function as energy storage molecules (e.g., glycogen) or structural components (e.g., cellulose in plant cell walls). Beyond polymers, bonding monomers can also create other important compounds required by the body, such as lipids, which are essential for membrane structure, energy storage, and signaling processes. Overall, forming bonds between monomers is crucial for the synthesis of complex molecules that are vital for the proper functioning of biological systems.
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What is the approximate carrying capacity of the population? In which year, did the population reach the carrying capacity? About how many years did it stay at carrying capacity? A graph entitled Graph A has year on the horizontal axis, from 0 to 9, and population size on the vertical axis, from 0 to 300 in increments of 50. From year 1 to year 3, the population increased rapidly to 250. From year 3 to year 7, the size remained relatively constant. From year 7 to year 8, the size began to decrease.
Answers
On Edguenity 2020
Answer:
1) 250 indivuals
2) Year 3
3) 4 years
Quick answer :
250, 3, 4
Have a good day :)
Answer:
Sheeeeeeeeeeeeeesh there ya go
Explanation:
brainliest apreciated
A cell membrane is more flexible than a brick wall. Why might many cells benefit from a flexible cell membrane? and A building has different types of openings, such as windows and doors. Do you think a cell also has different types of openings? Give an explanation for your answer. I NEED HELP NOW I HAVE TO SUBMIT
Answers
Answer:
plant: This Elodea leaf cell exemplifies a typical plant cell. It has a nucleus, and a stiff cell wall which gives the cell its box-like shape. The numerous green chloroplasts allow the cell to make its own food (by photosynthesis).
The central vacuole takes up most of the volume of the cell. It is transparent, but you can see where it's pressing the chloroplasts up against the cell wall, especially at the ends of the cell.
Like animal cells, the cytoplasm of this plant cell is bordered by a cell membrane. The membrane is so thin and transparent that you can't see it, but it is pressed against the inside of the cell wall.
animal :This human cheek cell is a good example of a typical animal cell. It has a prominent nucleus and a flexible cell membrane which gives the cell its irregular, soft-looking shape.
Like most eukaryotic cells, this cell is very large compared to prokaryotic cells. For scale, notice the pair of dark blue bacteria cells sticking to the right edge of the cheek cell. The bacteria are only a fraction of the size of the nucleus, but their tiny size is typical for bacteria.
A cell membrane's flexibility aids in the selective passage of substances across it. Endocytosis, a mechanism that enables amoeba to take in food particles from the environment, is made possible by the flexibility of the membrane.
What make cell membrane to be flexible?The majority of natural phospholipids' fatty acids include one or more double bonds, which cause the hydrocarbon chains to twist and are challenging to pack together.
The interior of the membrane can displace freely due to the prolonged hydrocarbon chains of the fatty acids, getting the membrane itself negotiable and supple.
Key fatty acids include arachidonic and docosahexaenoic acids. Due to its four double bonds, arachidonic acid's proportion in phospholipid tails can be slightly increased to improve membrane flexibility.
Therefore, cell flexibility is important for cell to function.
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Please read careful and answer it and I will mark you
Answers
Answer:
The answer is a
Explanation:
the answer is a because as u add more ice to the icewater the water gradually increases in cold temputere and decrease in hot temperature.
In Mendel's experiments, the F1 generation was different from the F2 generation in that
100% of the F1 generation displayed the dominant phenotype, and 75% of the F2 generation displayed the dominant phenotype.
100% of the F1 generation displayed the dominant phenotype, and 25% of the F2 generation displayed the dominant phenotype.
50% of the F1 generation displayed the dominant phenotype, and 75% of the F2 generation displayed the dominant phenotype.
100% of the F1 generation displayed the dominant phenotype, and 100% of the F2 generation displayed the recessive phenotype.
Answers
In Mendel's experiments, the F1 generation was different from the F2 generation in that 100% of the F1 generation displayed the dominant phenotype, and 75% of the F2 generation displayed the dominant phenotype. The correct option is A.
What are Mendel's experiments?Mendel was s botanist and a scientist who conducted experiments on the peas plant. By experimenting on the pea plant. He postulated three theories.
He discovered the dominant and recessive genes. The dominant genes are the gene shown in the offspring and the recessive genes are hidden in the organism. In the F1 generation, the genes that were dominant are 100 % and the recessive genes are 75% in the second generation.
Thus, the correct option is A, 100% of the F1 generation displayed the dominant phenotype, and 75% of the F2 generation displayed the dominant phenotype.
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Answer:
A.
Explanation:
Why do some species self clone when in captivity?
Answers
Self-cloning, or parthenogenesis, is a reproductive strategy in which an individual can produce offspring without the need for fertilization by a male.
Why do some species self clone when in captivity?In captivity, some species may experience changes in their environment that can trigger self-cloning as a response to stress or lack of mating opportunities.
This is more likely to occur in species that have the ability to switch between sexual and asexual reproduction depending on environmental conditions.
Self-cloning can also be a result of genetic mutations or abnormalities that prevent normal sexual reproduction from occurring. In some cases, individuals that are unable to mate successfully may resort to self-cloning as a means of ensuring their genetic lineage continues.
Additionally, some species are naturally capable of parthenogenesis, and this ability may become more prevalent in captive populations due to a lack of genetic diversity and mating opportunities.
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Points in the cell cycle where the cell "looks" for errors are called what
Answers
Answer:
The correct answer is - checkpoints.
Explanation:
In the cell cycles, there are different stages, and before every stage are monitored by the internal controls known as checkpoints. These checkpoints monitored the errors. Checkpoints are present in 1st the end of G1, a 2nd at the G2/M transition, and the 3rd during the metaphase of the cell cycle.
The most important checkpoint is at the end of G1 which decides that cell will go in the division or not.
Which substance would be okay to come in contact with without the need for universal precautions according to OSHA's Bloodborne Pathogens Standard
Answers
Substances such as feces and nasal secretions can be contacted without the need for universal precautions.
What are OSHA's Bloodborne Pathogens Standard?The OSHA's Bloodborne Pathogens Standard requires that all human blood and certain human body fluids are treated as if known to be infectious for diseases such as HIV, HBV, Hepatitis B and C, etc.
This implies that personal protective equipments must be worn at all times when handling all human blood samples and this is known as universal precautions.
However, some substances such as feces, nasal secretions, sputum, sweat, tears and urine would be okay to come in contact with without the need for universal precautions.
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Coastal marine habitats are particularly susceptible to anthropogenic impacts simply due to their proximity to land, people and sources of pollution. This question asks you to consider the various inputs to coastal habitats that we've discussed throughout the semester by selecting which statement is accurate/true.
Group of answer choices
Runoff containing agricultural fertilizers helps to improve longterm rates of primary production in local coastal habitats, because fertilizers add nutrients needed for algal growth.
Input of insecticides and pesticides into the ocean has no effect on marine species; these chemicals only affect terrestrial animals.
Chemicals that are absorbed into phytoplankton and small zooplankton can eventually make it into our seafood.
Chemicals that enter the food chain at the level of primary producers decrease in concentration at higher trophic levels.
Answers
The statement that is accurate/true is: Chemicals that are absorbed into phytoplankton and small zooplankton can eventually make it into our seafood.
Coastal marine habitats are highly influenced by anthropogenic impacts, which include inputs such as agricultural runoff, pesticides, and other chemicals. These inputs can have both direct and indirect effects on marine species and their habitats. For example, agricultural fertilizers can increase the levels of nutrients in coastal waters, which can lead to algal blooms that can harm other marine species. However, in the long term, these nutrients can also increase primary production in local coastal habitats.
On the other hand, insecticides and pesticides that enter the ocean can have negative impacts on marine species. These chemicals can bioaccumulate in the tissues of organisms and cause harm to their health and survival. Additionally, these chemicals can affect the food chain at various levels, as they are absorbed into phytoplankton and small zooplankton. Over time, these chemicals can accumulate in the tissues of larger fish and eventually make their way into our seafood.
Overall, it is important to consider the various inputs to coastal habitats and their potential effects on marine species and the environment. By understanding these impacts, we can work towards better management and conservation practices to protect these valuable ecosystems.
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Which are the major structures of the integumentary system? Select three options.
bones
hair
joints
muscles
nails
skin
tendons
Answers
Skin
Hair
Nails
Answer:
The major one are
Hair, Skin and Nails
Explanation:
I did this test
Hope this helps :)
Which of the following is not true about the rock layers?
Answers
Answer:
Layer C is older than layer F
Explanation:
They are the same age
it’s for 01.05 energy lab worksheet
Describe the five adjustments you made to the Rube Goldberg device in order to keep the
flow of energy going.
Answers
Answer:
The five adjustments I made to the Rube Goldberg device in order to keep the flow of energy going include
Changing the angle
Putting the rubber band firmly to the white ball
Changing the position of the weight
Attaching the 5lbs to the rope on the third platform found in close proximity to the green tube so it can enter into the see saw device.
Explanation:
agree with guy on top kjgcfvg
fungi differ from plants in that they do not reproduce by seeds and lack called_____-
Answers
Fungi differ from plants in that they do not reproduce by seeds and lack structures called "roots."
Fungi lack true roots. Instead, they possess a network of branching, thread-like structures called hyphae. Hyphae penetrate through organic matter, such as soil, decaying material, or living organisms, allowing fungi to extract nutrients. This mycelium (mass of hyphae) acts as the primary feeding structure of fungi. It absorbs nutrients from the surrounding environment, breaking down complex organic compounds into simpler forms that can be utilized by the fungus.
While some fungi form mutualistic relationships with plants, such as mycorrhizal associations where fungal hyphae extend into plant roots, these structures are not roots in the same sense as those found in plants. They serve different functions and have distinct anatomical and physiological characteristics.
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A substance is moved ______ its concentration gradient using the energy of ______ .
Answers
A substance is moved against its concentration gradient using the energy of an electrochemical gradient.
The cell must employ energy to transfer substances against a concentration or electrochemical gradient. This energy is derived from adenosine triphosphate (ATP), which is produced during the cell's metabolism.
Pumps are active transport systems that function against electrochemical gradients. Small particles are continually passing across plasma membranes. In the face of these passive motions, active transport maintains ion and other chemical concentrations required by live cells.
These processes may use a large portion of a cell's metabolic energy supply. For example, the majority of a red blood cell's metabolic energy is utilized to maintain the cell's essential balance of external and internal sodium and potassium levels.
Because active transport systems rely on a cell's metabolism for energy, they are vulnerable to various metabolic toxins that disrupt ATP supply.
There are two ways for transporting tiny molecules and materials with low molecular weight. Primary active transport transports ions across a membrane and generates a charge differential across the membrane, which is directly dependent on ATP.
Secondary active transport is the movement of material caused by the electrochemical gradient generated by primary active transport and does not require ATP directly.
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DNA replicates twice during meiosis
true or false?
Answers
Answer:
Meiosis consists of one round of DNA replication and two rounds of chromosome segregation.
Explanation:
DNA replicates twice during meiosis. Meiosis consists of one round of DNA replication and two rounds of chromosome segregation. Therefore, this statement in false.
What do you mean by meiosis?Meiosis is a special type of cell division of germ cells in sexually-reproducing organisms that produces the gametes, such as sperm or egg cells. It involves two rounds of division that ultimately result in four cells with only one copy of each chromosome.
Meiosis is a type of cell division in sexually reproducing organisms that reduces the number of chromosomes in gametes (the sex cells, or egg and sperm). In humans, body (or somatic) cells are diploid.
Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction.
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Persons who are Rh positive can have what possible genotypes?
RR
Rr
Rr
Answers
Blood type can be cassified by using the Rh factor classification. The gene that codes for Rh is diallelic, being Rh+ the dominant allele and Rh- the recessive one. A person who is Rh positive can have the genotypes RR or Rr.
What is Rh blood type classification?
Blood classification includes the ABO classification and the Rh factor classification.
Rh factor is a heritable protein located on the surface of red cells. This is the rhesus proteins and is also known as RhD antigen.
Not all individuals express this protein, which is why some individuals are
Rh positive (Rh +) if they carry RhD antigen, or Rh negative (Rh -) if they do not carry it.
The gene that codes for this protein does not depend on the gene that codes for the ABO blood type. They are inherited independently from each other.
The gene that codes for the Rh factor is diallelic and expresses complete dominance,
Rh+ is the dominant allele and codes for the factorRh- is the recessive allele and codes for the absence of the factorGenotypes
Rh+/Rh+ ⇒ Rh positiveRh+/Rh- ⇒ Rh positiveRh-/Rh- ⇒ Rh negativeIn the exposed example, assuming that
R represents Rh+r prepresents Rh-A person who is Rh positive can have the genotypes RR (Rh+/Th+) or Rr (Rh+/Rh-).
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A science classroom has a model of a bean plant. It shows the stem, some leaves, a bud, and a flower. What could be added as another part of a plant?
Is it: beans
Is it: flowerpot
Is it:potting soil
Is it: watering can
Answers
Answer:
answer is beans
Explanation:
hope this helps
Identify the ear flaps that are attached to the top chambers of the heart.
a. pectinate muscles
b. coronary sinus
c. auricle
d. atrium
Answers
The ear flaps that are attached to the top chambers of the heart are called auricles.
Auricles are also known as atrial appendages or ear flaps, and they are located on the top of the atria, which are the upper chambers of the heart. Auricles increase the volume of the atria and allow for more blood to be stored, which helps to regulate blood flow and pressure.) The ear flaps attached to the top chambers of the heart are c. auricle
These auricles are small, ear-like pouches extending from the atria, the top chambers of the heart. They function to increase the atrial volume and play a role in the filling and emptying of blood in the atria.
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What is gene and how does structural changes in genes can affect an organism?
Answers
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Each distinct gene chiefly controls the production of specific proteins, which in turn affects the traits of the individual.Changes (mutations) to genes can result in changes to proteins, which can affect the structures and functions of the organism and thereby change traits.
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\(→\)Sexual reproduction, genetic information can be altered because of mutations. Though rare, mutations may result in changes to the structure and function of proteins.
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What is the purpose of a geological time scale ?
Answers
Answer:
the “calendar” for events in Earth history.
Explanation:
search it up
Write atleast 2 unique basic charasturustic of liquids
Answers
Liquids have several unique characteristics that make them different from solids and gases. One of these characteristics is that liquids are able to flow and take the shape of the container they are in.
This is because liquids have a relatively low viscosity, which means that their molecules are able to move around easily. This is why liquids are able to change shape in order to fill the container.
Another unique characteristic of liquids is that their molecules are held together by weak intermolecular forces. This is why liquids can be poured and mixed with other liquids.
This is because the weak intermolecular forces between the molecules allow them to move around freely and mix with each other. This is also why liquids have a low boiling point and can evaporate at room temperature.
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Decide if each of the listed components of translation functions in prokaryotic translation, eukaryotic translation, or both Genetic Code 80S ribosome Formyl methionine
5' cap
Coupling of transcription & translation
Shine Delgarno Sequence 1. Prokaryotic Translation 2. Eukaryotic Translation 3. Both
Answers
Each of the listed components of translation functions in prokaryotic translation and the functions are as given.
3. 80S ribosomes on both ends 2. restatement of Eukaryotic Organisms 1. Prokaryotic restatement 5' cap 2. Eukaryotic restatement Coupling of recap & restatement 1. Prokaryotic Translation Shine Delgarno Prokaryotic restatement comes first.
The Shine- Dalgarno sequence is a conserved sequence present in bacterial mRNA's 5' untranslated region that functions as a ribosome- binding point during restatement inauguration. The Shine- Dalgarno sequence base dyads with theanti-Shine-Dalgarno sequence on the small ribosomal subunit to place the ribosome at the right launch codon for restatement in bacterial restatement.
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What do cell adhesion molecules (CAMs) do? Name the 3 major families and their differences
Answers
Cell adhesion molecules (CAMs) are proteins that facilitate cell-to-cell adhesion and cell-to-extracellular matrix adhesion. The three major families of CAMs are (1) Cadherins, (2) Integrins, and (3) Selectins. Cadherins mediate homophilic (like-with-like) adhesion, whereas integrins and selectins mediate heterophilic (unlike-with-like) adhesion.
They play crucial roles in various biological processes, including tissue development, immune responses, and wound healing.The three major families of CAMs are:
1. Cadherins: These are calcium-dependent adhesion proteins that primarily mediate cell-to-cell adhesion in a homophilic manner, meaning they bind to the same type of cadherin on another cell. They are crucial for tissue organization and embryonic development.
2. Integrins: These are heterodimeric transmembrane proteins that mediate cell-to-extracellular matrix adhesion as well as cell-to-cell adhesion. They bind to extracellular matrix proteins such as fibronectin, laminin, and collagen. Integrins play essential roles in cell migration, signaling, and cell survival.
3. Selectins: These are the glycoproteins that facilitate the binding of cells to other cells or the extracellular matrix. They are particularly important in the immune system, as they help mediate the adhesion of white blood cells to endothelial cells during inflammation.Additionally, cadherins and integrins are calcium-dependent, while selectins are calcium-independent. In summary, cell adhesion molecules (CAMs) are crucial for cell-to-cell and cell-to-extracellular matrix adhesion, and the three major families are cadherins, integrins, and selectins, with each having unique roles and binding properties.
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If you could develop a scientific cure for something, what would it be and why ?
Answers
Answer:
If I could develop a scientific cure for any issue, it would undoubtedly be the cure for the disease of cancer. This is because I believe that cancer is the most cruel and horrible disease that any person can have, since it is ultimately the body itself that acts against the health of the person. Furthermore, in the absence of an effective cure, and given its extremely high incidence rate on the population, an eventual cure for cancer would be the most beneficial scientific and medical discovery in the history of mankind.