Answer:
False
Example:
Only the physical properties like shape, size, appearance etc., are changed. Hence the given statement is false.
Answer:
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stem cell is fate determined once it has received the self renewal signal. as result, which genes are newly expressed? (check all that apply) diff (neural) genes sr genes div genes diff (skin) genes det genes id genes
The genes newly expressed after the stem cell has received the self-renewal signal are the ID genes, DET genes, and DIV genes.
One attribute of stem cells is that they can transform into different types of cells according to the needs of the tissue they're in. When these genes are expressed, the stem cell loses this potential.
Several genes are associated to stem cell renewal and differentiation. Examples are the Id genes, det genes, div genes, sr genes, etc.
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Explain why a single large cell of 2 cm x 2 cm x 2 cm is less efficient in terms of passively acquiring nutrients than eight
cells of 1 cm x 1 cm x 1 cm:
Cell sizes in relation to effectiveness eight cells that are 1 x 1 cm x 1 cm are more effective in passively acquiring nutrients than a single giant cell that is 2 cm x 2 cm x 2 cm.
Briefing :There is a high surface area to volume ratio in eight tiny cells. The efficiency of the ratio in moving nutrients and waste into and out of a cell increases with its size. Even when they are numerous, the diffusion rate is still impacted by their size. In contrast, a single big cell has a low surface to volume ratio, which causes a slow rate of material diffusion.
How size of a cell affect diffusion?The amount of chemicals that diffuse into a cell increases as its surface area does. The surface area accessible to let substances in decreases by half for every unit increase in volume of the cell because volume grows more quickly than surface area.
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Patrick did an experiment to study the solubility of two substances. He poured 100 mL of water at 20 °C into each of two beakers labeled A and B. He put 60 g of Substance A in the beaker labeled A and 60 g of Substance B in the beaker labeled B. The solution in both beakers was stirred for 1 minute. The amount of substance left undissolved in the beakers was weighed. The experiment was repeated for different temperatures of water and the observations were recorded as shown.
Experimental Observations
Substance Mass of Undissolved Substance at Different Temperatures (gram)
20 °C 40 °C 60 °C 80 °C
A 18 14 10 5
B 60 60 60 60
Part 1: Which, if any, substance is soluble in water?
Part 2: Explain how the data helped you determine solubility for both substances for temperatures 20 °C to 80 °C. (8 points)
Based on the results obtained;
Solute A is solute in waterA graph of the amount of solute dissolved against temperature helped to determine solubility for both substances for temperatures 20 °C to 80 °C. What is the solubility of a substance?The solubility of a substance of substance is the amount of that substance that dissolves in a given volume of solution or solvent.
The solubility of substances vary from one substance to another,
Some factors that affect the solubility of substances include:
temperature - the solubility of solids generally increases with temperature while the solubility of gases decrease with temperature and vice versapressure - the solubility of gases increase with increase in pressure and vice versanature of substance -some solutes generally have higher solubilities than others in a given solvent.nature of solvent - based on the principle of like dissolves like, polar solutes dissolve in polar solvents whereas non-polar solute dissolve better in non-polar solvents.Learn more about solubility at: https://brainly.com/question/24057916
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While _______ decisions will generally need to be processed via the ______ system in our brains in order for us to reach a good decision, with ______ decisions, heuristics can allow decision makers to switch to the quick, _____ system.
Nonprogrammed decisions will generally need to be processed via the reflective system in our brains in order for us to reach a good decision, with programmed decisions, heuristics can allow decision makers to switch to the quick, reactive system.
Programmed decisions are ones that are repeated over time and can be guided by an established set of rules. These judgments may be simple or complicated, but the criteria used to make them are all known or can be approximated with a good degree of accuracy. For example, a manager selecting how much raw materials to order should be a programmed decision based on estimated production, existing stock, and anticipated time for final product delivery. Nonprogrammed decisions, on the other hand, are unique, unstructured decisions based on ill-defined criteria. Nonprogrammed decisions are more likely to include confusing or partial information, and the decision maker may need to use some deliberate judgment and creative thinking to obtain a satisfactory answer. Because they need more engagement and thinking on the part of the decision maker, these are also known as nonroutine decisions or high-involvement decisions. Consider a manager deciding whether or not to implement new technologies.
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Write one to two paragraphs discussing your thoughts and prior knowledge on the question prompt: “Why do you think Galileo’s work brought him into conflict with the Catholic Church?”
Please help me
Answer: Galileo was ordered to turn himself into the Holy Office to begin trial for holding the belief that the Earth revolves around the sun, which was deemed heretical by the Catholic Church.
Kendis eats predator fish that feed on small oysters in a river ecosystem. the river has become polluted with moderate levels of heavy metals which are absorbed by the oysters. what is the most likely cause of this pollutant on kendis if he keeps eating the predator fish? nothing will happen because the oysters are small. nothing will happen because the fish will stop eating the oysters. kendis will get sick because the pollutants will biomagnify. kendis will get sick because the pollutants will enter the drinking water.
The most likely cause of the pollutant on Kendis if he keeps eating the predator fish is that Kendis will get sick because the pollutants will biomagnify (option C).
What is biomagnification?Biomagnification is the process, in an ecosystem, in which a higher concentration of a substance in an organism is obtained higher up the food chain.
According to this question, Kendis eats predator fish that feed on small oysters in a river ecosystem. However, the river has become polluted with moderate levels of heavy metals which are absorbed by the oysters.
This means that a continuous consumption of the predator fish will lead to a bioaccumulation of the heavy metals in Kendis causing the metal concentration to biomagnify.
Therefore, Kendis will likely get sick due to the bioaccumulation of the metal.
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In 4 sentences explain What happens in the brain during creative thinking.
Where does Mathilde get the necklace?
Answer: Mathilde gets the necklace from her friend Madame Forestier
Explanation:
i did the quiz
How did snakes initially lose their limbs (hint: this has to do with a mutation)?
First, we must understand that before limbless snakes, there was an ancestor that possessed limbs. In the population of this ancestor, a mutation occurred in one of the individuals that caused it not to develop limbs.
Currently, the data suggest that the loss of limbs was due to the Sonic hedgehog gene and the regulatory region of this gene, the ZRS region.
The mutation (a deletion or loss of nucleotides) in the regulatory region (ZRS) meant that the sonic hedgehog gene could not be expressed correctly and therefore the gene could not drive limb development.
We already know how the loss of limbs occurred, now the question is, how was this feature maintained over time?
Today, snakes do not have limbs because the limbless ancestor was able to reproduce in a great way and therefore its descendants have lasted until today. This was probably because the lack of limbs gave it an advantage and a greater survival compared to the other animals in the population that did have limbs.
Which of the following does not describe the inner liquid portion of the cell?
a-When it is in the nucleus, it is called cytoplasm.
b-It can contain enzymes, hormones, and nucleic acids.
c-It is mostly made up of water.
d-A general term for it is protoplasm.
The following which does not describe the inner liquid portion of the cell is when it is in the nucleus, it is called cytoplasm and is denoted as option A.
What is a Nucleus?This refers to the organelle which contains genetic material such as DNA and controls other cellular activities which occurs in the cell.
The cytoplasm on the other hand is referred to as all of the materials which are found in an eukaryotic cell enclosed by the cell membrane. However there is an exception as the nucleus is not among which is therefore the reason why option A was chose as the correct choice.
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12. After Johanna pushes for a while, she begins to feel tired. What type of energy is
transformed into the kinetic energy she uses?
A. chemical
B. electrical
C. nuclear
D. thermal
After Johanna pushes it for a while, she begins to feel tired. Here Thermal energy is being transformed into the kinetic energy that she is using.
What is Kinetic Energy?The energy that an object has as a result of its ongoing motion is known as kinetic energy in terms of physics. It is described as the effort required to move a mass-determined body from rest to the indicated velocity.
The body holds onto the kinetic energy that it acquires during this acceleration until and unless its speed changes. Kinetic energy has the following formula: K.E. = ½ m v2, where m is the object’s mass and v are its square velocity.
Measure of Kinetic EnergyThe kinetic energy that is measured in kilograms-meters then squared per second squared if this mass is then measured in kilograms and the velocity is then measured in meters per second.
When potential energy is released, among other catalysts such as elastic forces or gravity, kinetic energy is produced.
Motion is created by kinetic energy. The kinetic energy of an object increases as force is applied to it and it accelerates.
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This happens when the environment becomes nutrient-rich, causing increased growth in plants and algae in estuaries and coastal waters.
Nitrogen cycle
Eutrophication
Nutrient cycle
Estriphication
1 point
Identify the difference between global climate change and global warming.
Global warming is a long-term change in the average weather patterns across the Earth. Global climate changes is the long-term heating
uman activities
Eutrophication happens when the environment becomes nutrient-rich, causing increased growth in plants and algae in estuaries and coastal waters.
The difference between global climate change and global warming is that Global warming is a long-term change in the average weather patterns across the Earth whereas Global climate change is the long-term heating due to human activities.
What are the results of Global Warming?
Environmental changes brought on by global warming may have a negative influence on human health. Additionally, it can result in an increase in sea level, which poses a threat to biodiversity, a change in precipitation patterns, an increase in the likelihood of droughts and floods, and the loss of coastal land.
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Which of the following statements provides the best evidence to support the claim shown above?
The correct option is first, as the jackrabbit's circulatory system increases blood flow to the ears during hot days and blood flow to the ears decreases during cool or cold nights.
Homeostasis is vital to preserving an ideal environment for cell structures to work effectively. The direction of a cell or an animal's inner environment in reaction to changes within the outside environment is called homeostasis.
In this case, the jackrabbit's circulatory framework is reacting to fluctuating temperatures.
On hot days, the body is at a chance of warming up over ideal temperature which might obstruct body capacities. In this manner, the bloodstream to the ears is expanded to encourage heat loss.
In cold temperatures, the bloodstream to the ears is diminished to moderate warm for crucial body organs. The bloodstream is coordinated to the center of the body to secure the heart, lungs, liver, and brain.
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bio help please please
The given diagram summarizes the light reactions of photosynthesis. Which numbered question mark represents a molecule of ATP?
The third (3) number question mark represents the molecule of ATP in the given diagram of light reactions of photosynthesis.
ATP is the abbreviation for Adenosine Triphosphate. It is one of the major energy derivative in the body of living organisms. There are several processes carried out inside the body of living organism for the production of ATP.
Light reaction is the first phase of photosynthesis in which the sunlight energy is used directly to form ATP and NADPH for synthesis of food. The sunlight energy mediates the splitting of water molecule to release protons and electrons which are further used in the production of energy derivatives.
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a variety of factors influence enzyme activity. substances that bind to the enzyme and interfere with substrate binding or catalysis are inhibitors. identify the type of inhibition associated with each of the descriptions and examples by classifying each statement as irreversible, competitive, or mixed inhibition. you are currently in a sorting module. turn off browse mode or quick nav, tab to items, space or enter to pick up, tab to move, space or enter to drop. irreversible inhibition competitive inhibition mixed inhibition
Answer:
Irreversible inhibitioninhibitor may permanently modify an enzymeDIPFDIPF permanently modifies the hydroxyl group of a Ser residue at the active site.
Competitive inhibitioninhibitor binds reversibly to an enzyme's active sitemalonate, which resembles succinate, binds to the succinate dehydrogenase active site
Mixed inhibitioninhibitor binds to an enzyme at a site other than the active sitethe Al+3Al3+ ion binds to acetylcholinesterase or to the acetylcholinesterase‑substrate complex
Explanation:
thats all have a nice day
the result of adrenergic stimulation varies: adrenergic stimulation of smooth muscles of bronchioles results in a(n) effect while adrenergic stimulation of the heart results in a(n) effect.
Answer:
Inhibitory; excitatory
Explanation: from biology class your welcome!
air and water pollution are directly responsible for the loss of some species. in their studies of these pollution effects, biologists have determined that are especially sensitive to air pollution, and are now being used as an index of urban air quality. air and water pollution are directly responsible for the loss of some species. in their studies of these pollution effects, biologists have determined that are especially sensitive to air pollution, and are now being used as an index of urban air quality. evergreen trees lichens deciduous trees warblers songbirds
The lichens are especially sensitive to air pollution.
What is air quality index?The Air Quality Index (AQI) is used for reporting daily air quality. It tells you how clean or polluted your air is, and what associated health effects might be a concern for you. The AQI focuses on health effects you may experience within a few hours or days after breathing polluted air.
Urban air quality refers to how “clean” the ambient air is inside of cities with a density, population, and level of activity that generally are recognized as “urban.” Urban air quality generally differs from rural air quality since there are more concentrated sources and the ability for the pollutants in the air to be dispersed are limited by the physical constraints of the urban environment. Urban air quality varies significantly in urban cities in industrialized worlds, and non industrialized world generally because of the difference between control on pollution sources and use of open fires in the urban areas. Nevertheless, illness, deaths, and damage to the environment are still attributed across the world to air pollution.
To grow, lichens obtain their nutrients from the air.
Since lichens have neither roots nor a protective surface, they cannot filter what they take in, so they take in whatever is in the air directly. Pollutants can accumulate in the lichen and become toxic very quickly.
Museum lichen researcher Gothamie Weerakoon believes lichens are excellent indicators of air pollution. She says, "They are very sensitive, respond to pollution within a short period of time, and we have access to very good databases that allow us to understand different species of lichens.
Butterflies, nematodes, frogs and toads are very good indicators of environmental pollutants, but lichens are easier to study and respond more quickly to environmental changes. To grow, lichens obtain their nutrients from the air.
Hence, The lichens are especially sensitive to air pollution.
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sometimes the effect of gene interaction is that one gene masks (hides) the effect of another gene at a different locus, a phenomenon known as please choose the correct answer from the following choices, and then select the submit answer button. answer choices epistatic gene. hypostatic gene. duplicate recessive epistasis.
Answer:
c. albinism in snails
Explanation: answer from biology class hope it helps
i need help, im doing a quiz sheet and im not sure what to do
Answer:
Pseudomonas aeruginosa is one of the common germs (micro-organisms) found in cuts or other wounds in the skin. Pseudomonas aeruginosa is a bacteria that is most commonly found in hospital settings and can be spread through infected water.
Which statement describes one way that the source of the energy released during cellular respiration is delivered to tree cells? Multiple choice question. cross out A) Water is transported from the roots to the leaves. cross out B) Sugars are transported from the leaves to the roots. cross out C) Minerals are transported from the roots to the leaves. cross out D) Carbon dioxide is transported from the leaves to the roots.
B) Sugars are transported from the leaves to the roots.
Leaves- Simple leaves have an entirely undivided blade, but they can also have lobes in which the gaps between the lobes don't reach the main vein. In a complex leaf, each leaf blade is split into leaflets, each of which has a stalk and is connected to the main vein.
Root- A plant's roots serve a number of vital purposes. The plant is anchored in place by its roots, which fend off the forces of wind, water movement, and mud flow. In order to transport oxygen, water, and nutrients upward through into the plant to a stems, leaves, and flowers, the root system absorbs these elements from the soil.
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What differences do you notice between the rhythm and beats in Colombia's Joropo music and Brazil's Carnival music?
Colombia has a vibrant of talent that touches a full spectrum of rhythms whereas Brazil's Carnival music uses rhythm parts that all mixed up with substantial harmonies.
What differences between the Colombia's Joropo and Brazil's Carnival music?Colombia is a lively photomontage of flair that meet full of rhythms ranging from Pop music and Classical music to Salsa and Rock music. Because Known for its signature rhythm, Cumbia began as a courtship dance practiced among African slaves, and later mixed with Amerindian steps and European and African instruments and musical characteristics. Today, Cumbia is very famous in the Andean region of Colombia. Soca is the high-energy music you'll make out pumping from sound systems that accompany the Brazil's Carnival Parade. It is a strong mix of calypso, electronic jazz strike, thumping bass lines, melodious horns, and rhythm parts all mixed up with substantial harmonies. In fact, it is still the most famous Brazilian track to date.
so we can conclude that Brazil's Carnival music uses rhythm parts that all mixed up with harmonies while on the other hand, Colombia has a vibrant of talent that touches a full spectrum of rhythms.
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ch 11 how is community-based conservation different from more traditional approaches to conservation? group of answer choices in community-based conservation, scientists from a wide range of backgrounds are brought together to focus the efforts of an entire scientific community of the problem. community-based conservation requires a large community of guards to patrol preserves and keep people out. in community-based conservation, local people are involved with protecting the habitat, allowing them to still gain benefit from its resources. community-based conservation focuses on protecting plant and animal communities rather than single species.
Community-based conservation is different from more traditional approaches to conservation because in community-based conservation, local people are involved with protecting the habitat, allowing them to still gain benefit from its resources.
What is conservation?
Conservation is a term in biology that refers to the management of earth and of nature's biodiversity with the aim of protecting species, their habitats, and ecosystems from excessive rates of extinction and the erosion of biotic interactions.
In community-based conservation, it involves efforts to protect biodiversity in which the local community participates as much as possible. Scientists and the people who live in a certain place work together to save species living there.
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What is a nucleosome?
The Answer is C
hope this helps!
3. Calculating You use a lever to lift a 100-N box onto a shelf. If you push down an effort distance of 1.5 m using an effort force of 60 N, how high will the box rise? (Hint: In this problem, the box's weight is equal to the resistance force.)
If you push down an effort distance of 1.5m using an effort force of 60N, the box will rise distance of 0.9m.
To lift a 100N box onto a shelf. If we push an effort distance of 1.5m using an effort of 60N. The 100N box will rise up by a distance H.
This distance d can be calculated,
Using law of conservation of energy,
As there is no external force on the body the concept of conservation of energy can be used here,
It means that the applied energy will be equal to the output energy in the ideal conditions.
So, we can write,
Energy(applied) = Energy(Output)
mgh = MgH
Where,
mg is the effort force of 60N,
Mg weight of the box to be lift which is 100N,
h is the effort distance of 1.5 meters and,
H is height by which the box will rise.
Putting all the values,
60×1.5 = 100 × H
H = 90/100
H = 0.9m
The 100N box will rise upto a distance of 0.9 meters.
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when performing phage typing to identify an unknown bacterium, you must have in your possession. group of answer choices antiserum containing antibodies that will bind to the bacterium to be identified dna that will hybridize to the dna of the bacterium to be identified fluorescent molecules that will light up when bound to the dna of the bacterium viruses that will specifically infect the bacterium you're trying to identify rna that will hybridize to the rna of the bacterium to be identified
When performing phage typing to identify an unknown bacterium, we must have into account the viruses that will specifically infect the bacterium we're trying to identify.
What is a bacteriophage?A bacteriophage is a specific virus that is able to infect a given bacterium or a group of bacteria species. The expression phage typing involves the identification of these bacteriophages in a given sample, which may depend on our ability to biochemically identify these entities (ie., these viruses).
Therefore, we can conclude that bacteriophages are viruses that infect bacteria and they can be identified by phage typing.
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an organism that belongs to the kingdom protista
1)
Read the passage about the influenza virus.
The influenza virus is one of the most common infectious diseases affecting humans. A virus is made of tiny particles called
virion. Virion contain enveloped, single-stranded genetic information. They are between 80 to 120 nanometers in diameter.
Once inside of a host cell, virion begin replicating during an incubation period of one to four days. After the incubation period,
humans begin to feel the symptoms of the influenza virus. Each year, millions of Influenza A and B vaccines are administered
in the United States. The vaccines contain antigens from the strains that are most likely to cause illnesses. New vaccines are
needed every year because viruses constantly change during replication.
Using the information in the passage, which statement best supports the idea that a virus is similar to a living organism?
A)
B)
9
D)
A virus can replicate by itself.
A virus can change during replication.
A living organism is made of tiny particles called virion.
A living organism maintains all genetic information in single strands.
Using the information in the passage, A living organism is made of tiny particles called virion, this statement best supports the idea that a virus is similar to a living organism.
What is virion?
A virion is a complete viral particle made up of an inner nucleic acid core (either ribonucleic acid, or RNA, or DNA), as well as an outside protein shell called a capsid. The virus's specificity is provided by the capsid, while its infectivity is conferred by the core. Some viruses have a fatty membrane surrounding the capsid, in which case exposure to ether and chloroform that contain fatty solvents will render the virus inactive. Many virions are spheroidal, or more precisely, icosahedral, with 20 triangular faces on the capsid and two to five or more regularly spaced units termed capsomeres along each side. The nucleic acid is tightly wound inside. Other virions feature a capsid with a loosely coiled nucleic acid and an uneven number of surface spikes.
From this passage we get to know that, A virus is made of tiny particles called virion. Virion contain enveloped, single-stranded genetic information. They are between 80 to 120 nanometers in diameter. Once inside of a host cell, virion begin replicating during an incubation period of one to four days. After the incubation period, humans begin to feel the symptoms of the influenza virus.
Hence A living organism is made of tiny particles called virion, this statement best supports the idea that a virus is similar to a living organism.
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6. What is the function of the energy storing polysaccharides starch and glycogen?
Answer:
Polysaccharides generally perform one of two functions: energy storage or structural support. Starch and glycogen are highly compact polymers that are used for energy storage. Cellulose and chitin are linear polymers that are used for structural support in plants and animals, respectively.
Starch serves as energy storage in plants. Glycogen is an even more highly branched polysaccharide of glucose monomers that serves the function of energy storage in animals. Glycogen is made and stored primarily in the cells of the liver and muscles.
leptin is secreted by adipose tissue to slow the appetite. despite this, many people continue to gain weight. why does this mechanism not always work?
Explanation:
Obese people have unusually high levels of leptin. This is because in some obese people, the brain does not respond to leptin, so they keep eating despite adequate (or excessive) fat stores, a concept known as 'leptin resistance'. This causes the fat cells to produce even more leptin.
What is the major reason cells cannot grow too large?
Answer:
the larger a cell becomes,the more demands the
cell place on its DNA.In addition,the cell has more trouble to moving enough nutrition and wastes across the cell membrane
Explanation:
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