In 1668 Francesco redi, published the investigation showing that fly larva grow on meat if adultflies have access to the meat fly larva do not grow on meat if adult flies do not have access tothe meat the cell theory was later developed by using evidence from many differentexperiments and observations. Which part of the cell theory is supported by the results ofreddi's investigation?A. all cells originate from other cells.IB. all organisms are composed of cells.C. cells transfer hereditary information during cell division.D. cells are the basic structural and functional units of organisms.
Answers
The investigation of Francesco Redi tells us that dead maggots or flies would not cause new flies when located on rotting meat in a sealed jar. Fresh air is a requirement in order to generate life. His experiment disproved spontaneous generation.
Related Questions
deescribe the steps of protein synthesis in a eukaryote
Answers
Explanation:
includes three steps: initiation, elongation, and termination. After the mRNA is processed, it carries the instructions to a ribosome in the cytoplasm. Translation occurs at the ribosome, which consists of rRNA and proteins.
Which of your cells has allof your DNA code?
Only hair cells
All of your cells
Only brain cells
Heart and skin cells
Answers
Answer:
answer is all of your cells because DNA is present all
in all places
what’s a characteristic of precipitation
Answers
Answer:
Precipitation is liquid or solid water falling from clouds to the Earth's surface or formed on different bodies as a result of atmospheric water vapor condensation. Precipitation can be liquid, solid, or mixed. Liquid precipitation includes rain and drizzle.
Which country might
have an age-structure
pyramid (showing
declining growth) that
looks similar to the
one shown?
Answers
The correct option A. Italy, may have a pyramidal age model similar to that depicted in the figure (with diminishing growth).
Explain the term age-structure pyramid?Population pyramid: a visual representation of a population's age and sex distribution.
The final shape of such a population pyramid is determined by the age and sex composition of the population; as a result, the representation may resemble a pyramid, be columnar, or have an erratic profile.Additional aspects of a population, including marital status, ethnicity, or geography, can be represented by the population pyramid. In this instance, more categories are represented by further subdividing the bars for each age-sex group.A broad-based pyramid shows that younger age groups make up a disproportionately big fraction of the population.Whereas one with a narrow or pointed top shows that older age groups make up a disproportionately small portion of the population.Thus, Italy, may have a pyramidal age model similar to that depicted in the figure (with diminishing growth).
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SOMEONE PLEASE HELP MEEEE!!!!! The figure below illustrates the internal membrane of a thylakoid structure within a chloroplast.
a. Explain how the thylakoid membrane plays a critical role in the conversion of light energy to chemical bond energy in ATP.
b. A chemist discovers a new chemical compound that targets and chemically alters the lipid components of the thylakoid membranes. As a result, thylakoid-membrane integrity is greatly reduced, and the membrane itself becomes leaky. Predict how this chemical compound would be expected to affect plants that are exposed to it. Justify your response.
Answers
A. The thylakoid membrane plays a critical role in the conversion of light energy to chemical bond energy in ATP through the process of photosynthesis.
Within the thylakoid membrane, there are pigments called chlorophyll that are responsible for absorbing light energy. When light energy is absorbed by chlorophyll molecules, it excites the electrons, initiating a series of electron transport reactions.
The thylakoid membrane is crucial for this process because it provides the structural framework and houses the components necessary for electron transport and ATP synthesis.
It contains protein complexes such as photosystem I and photosystem II, cytochromes, and ATP synthase, which are involved in the sequential flow of electrons and the production of ATP.
B. If a chemical compound targets and alters the lipid components of the thylakoid membranes, resulting in reduced integrity and increased membrane leakage, it would likely have significant negative effects on plants. Here's how it can impact plants:
Disruption of photosynthetic electron transport: The altered lipid components could impair the arrangement and stability of the protein complexes involved in electron transport, such as photosystem I and photosystem II.
This disruption could hinder the flow of electrons and reduce the efficiency of photosynthesis, leading to a decreased production of ATP and NADPH.
Decreased energy production: With compromised thylakoid membrane integrity and increased leakage, the proton gradient required for ATP synthesis would be disrupted.
This would lead to a decrease in ATP production, which is essential for various energy-requiring processes in plants, including growth, metabolism, and cellular activities.
Thus, a chemical compound that targets and chemically alters the lipid components of the thylakoid membranes, causing reduced integrity and increased membrane leakage, would negatively impact plants by disrupting photosynthetic electron transport, reducing energy production, impairing chloroplast function, and hindering plant growth and development.
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Which of the following is an example of a structural adaption?
*
1 point
Spikes on a bearded dragon
Venom in snake bite
Green vs brown coloration
Mimicry
Answers
An example of structural adaptation is a spike on a bearded dragon (option A).
What is structural adaptation?Adaptation in biology is an instance of an organism undergoing change, or the structure or behavior that is changed.
Adaptation can either be structural or behavioural depending on the change that occurs:
An adaptation can be structural, meaning it is a physical part of the organism. An adaptation can also be behavioural, affecting the way an organism responds to its environment.
An example of a structural adaptation is the way some plants have adapted to life in dry, hot deserts. Plants called succulents have adapted to this climate by storing water in their short, thick stems and leaves.
Therefore, the possession of spikes on a bearded dragon is an example of structural adaptation.
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Over the course of a yoar, areas near Earth's equator receive more direct energy from the Sun than areas near Earth's polos. Which of the following correctly describes ono result of this heating pattern?
1.The poles lose all their heat at night.
2.
Atmospheric and oceanic currents distribute heat from the tropics to the polos.
3.Sunlight overheats the oceans near the equator, making it impossible for sea life to exist there.
4.Sunlight evaporatos a massive amount of surface water near the tropios, creating flooding in this part of the world.
Answers
Answer: number 2
Explanation:
The one that correctly describes one result of this heating pattern is Atmospheric and oceanic currents distribute heat from the tropics to the poles. The correct option is 2.
What is the atmosphere?The atmosphere is the outer covering of the earth. It is a layer of gases around the earth. There are different types of atmosphere. They contain different types of temperature, pressure, and gases.
The equator of the earth is at the center of the earth. They have normal temperatures there. At the poles, there is low temperature because sunlight is less there. But with the changing climate of the earth, the warming is increasing and the sun.
Thus, the correct option is 2. Atmospheric and oceanic currents distribute heat from the tropics to the poles.
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What would happen to people who have an open wound and whose blood did not clot naturally?
Answers
Answer:
Because blood does not clot properly without enough clotting factor, any cut or injury carries the risk of excessive bleeding. In addition, people with hemophilia may suffer from internal bleeding that can damage joints, organs, and tissues over time.
Explanation:
Nervous system basis of Parkinson's disease
Answers
Answer:
hope the image helps :)
Explanation:
Draw an example in the human body of a) a strong acid b) a base The give an explanation for both:Can you simplify the answers to be condensed and simplistic as possible, thanks.
Answers
An example of a strong acid is hydrochloric acid (HCl) which is produced in the stomach to form the gastric acid that digests food. This is produced by the parietal cells of the stomach; these have membrane proteins that expel H+ (proton pump) and Cl- (transport channel) ions into the stomach to produce this acid.
An example of a base in the human body is bicarbonate (HCO3-), which helps maintain the body's pH and thus homeostasis. Bicarbonate neutralizes the carbon dioxide (acid) in the bloodstream, preventing the pH of the blood from decreasing. If CO2 decreases the pH increases due to HCO3-.
Look at the diagram below. Ray 1 from the Sun moves through air and falls on the surface of a lake. Ray 2 is a ray which travels from the surface of the lake at the point Ray 1 strikes the lake, and moves towards air. Ray 1 and Ray 2 make the same angle with the surface of the lake. Ray 1 bends towards the vertical when it enters the lake as Ray 3 Which statement is correct about Ray 3? Ray 3 is the part of Ray 1 which is reflected. Ray 3 is the part of Ray 1 which is refracted. The part of Ray 1 which is absorbed by the lake is represented by Ray 3. The angle Ray 3 makes with the lake equals the angle Ray 1 makes with the lake.
Answers
A transparent surface causes some of a light ray to be refracted and some to be reflected, as shown in the portion of Ray 1 that is reflected as Ray 2.
What is Ray?Ray is a distributed machine learning and other computations open source framework. It is made to give scalable distributed training and inference a flexible, high-performance platform. Ray offers fault tolerance, quick data sharing across nodes, distributed Python function execution, and efficient task scheduling.
Deep learning, reinforcement learning, computer vision, natural language processing, and other applications are among the many that Ray supports. Ray is simple to use and offers a versatile programming architecture that makes it possible for users to design, debug, and publish their applications quickly and easily. Additionally, Ray offers strong management, monitoring, and debugging capabilities for distributed computation.
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The diagram attached below,
NEED HELP WITH HOMEWORK!!!
The mutation that causes sickle cell is:
1. deletion
2. Addition
3. substitution
4.Unpoint
Answers
PLEASE HELP (24 points if you help!!!) 1. The roots of a plant grow in the cracks of a sidewalk.
As the root grows larger the cement begins to crack.
Answers
Answer:
Physical Weathering
Explanation:
Mechanical breakdown of rocks
Which RNA molecule is involved in translating a short sequence of RNA into an amino acid, acting like a molecular Rosetta stone?
a
snRNA
b
tRNA
c
mRNA
d
rRNA
Answers
The RNA involved in the translation of a short sequence of RNA into an amino acid is mRNA.
The mRNA (messenger RNA) is a product of transcription. During this process, DNA strands act as templates and RNA is transcribed from them. The resulting RNA known as mRNA carries the genetic codes.
The genetic codes are translated to their respective amino acid in a process known as translation or protein synthesis. The mRNA binds to the ribosome in the cytoplasm and each codon is read while the respective amino acid being carried by a tRNA is specified.
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Below is a food web from a tundra ecosystem in Nunavut, a territory in Northern Canada
Which two of the following organisms are secondary consumers in this food web?
parasitic jaeger
barren-ground caribou
bilberry
Arctic fox.
Answers
Answer:
2 and 4
Explanation:
Those eat things to become secondary
A red flower and a white flower can be expressed on a plant, depending on genetics. Which outcome would indicate codominance as the inheritance pattern for flower color in this species?
A All offspring of a red X white cross would be pink.
B All offspring of a red X white cross would be spotted with red and white both being expressed.
C All offspring are white.
D All offspring are red.
Answers
A cross between a red and a white animal would result in all of its offspring having both red and white spots.
Codominant inheritance occurs whenever a heterozygote produces both copies of a gene pair. Thus, the phenotype of the offspring combines this same phenotypes of the its parents.
The characteristic is therefore neither recessive nor dominant. Those with type AB blood serve as an example of the codominance of people. A individual who inherits both IA and IB will have form AB blood because they are codominant and would be expressed together as a result.
The crimson flower to white spots on it and the creatures with black and white jackets are two much farther examples of codominance.
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pls help will give 10 points and mark branlist.
Answers
what do you call the very fine particles that you formed after pounding the pieces of rocks with a hammer
Answers
Answer:
fine particles (silt and clay) are moved to areas of still water (off-shore settings). the majority of these particles are made up of clay minerals, which are weathering products of feldspars and ferro-magnesian minerals.
Answer:
You call them minerals
Explanation:
The diagram below shows a food web in a woodland.
If a certain organism is a secondary consumer, what best explains its position in the food web?
a
X, because organism X feeds on producers
b
Y, because organism Y feeds on producers
c
X, because organism X feeds on a carnivore
d
Y, because organism Y feeds on a herbivore
Answers
The theory of endosymbiosis proposes that eukaryotes descended from a primitive combination of both archaea and bacteria. What evidence supports this theory?
Answers
The theory of endosymbiosis proposes that eukaryotes descended from a combination of both archaea and bacteria. Evidence that supports this theory includes the similarities between mitochondria and chloroplasts to free-living bacteria, the presence of double membranes around mitochondria and chloroplasts, and the fact that mitochondria and chloroplasts have their own DNA.
Explanation:
The theory of endosymbiosis proposes that eukaryotes descended from a combination of both archaea and bacteria. Evidence that supports this theory includes the similarities between mitochondria and chloroplasts to free-living bacteria, the presence of double membranes around mitochondria and chloroplasts, and the fact that mitochondria and chloroplasts have their own DNA.
Mitochondria and chloroplasts contain some of the same enzymes and transport systems as bacteria, and are similar in size and shape to bacteria. In addition, they both reproduce by binary fission, similar to bacteria. The presence of double membranes around mitochondria and chloroplasts also supports the theory of endosymbiosis, as this suggests that the organelles were engulfed by the host cell and retained their own membranes.
Finally, mitochondria and chloroplasts have their own DNA, which is circular like bacterial DNA. The DNA of mitochondria and chloroplasts also lacks histones, which are present in eukaryotic DNA, and is more similar to bacterial DNA in terms of gene expression and replication.
Together, these lines of evidence support the theory of endosymbiosis and suggest that mitochondria and chloroplasts were once free-living bacteria that were engulfed by a host cell and evolved into the organelles found in eukaryotic cells today.
The ________ of a protein is the specific order of amino acids that makes it up, but it needs to undergo much more modification before it is a finished protein.
Select one:
a.
mRNA
b.
primary structure
c.
tRNA
d.
DNA code
Answers
The precise arrangement of amino acids that make up a protein forms its main structure, but before a protein is considered complete, it must go through considerably more change.
The sequence of amino acids encoded in the DNA code determines the main structure, which is the building block of a protein. This sequence is initially translated into mRNA by tRNA before being translated again into a protein.
The final three-dimensional structure of the protein is formed after the primary structure is altered by procedures including folding, phosphorylation, glycosylation, and disulfide bridges. The biological activities of proteins are made possible by their three-dimensional structure.
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4. The ATP yield from 2 moles of mitochondrial NADH under aerobic conditions in a eukaryotic cell would be: which option is correct a) 1 mole of ATP b) 2 moles of ATP c) 3 moles of ATP d) 4 moles of ATP e) 6 moles of ATP
Answers
The ATP yield from 2 moles of mitochondrial NADH under aerobic conditions in a eukaryotic cell is approximately 4 moles of ATP.
During oxidative phosphorylation, each mole of NADH can generate around 2.5 to 3 moles of ATP. Therefore, for 2 moles of NADH, the total ATP production would be in the range of 4 to 6 moles of ATP. While the more precise estimate falls within the 4 to 6 moles range, the closest option provided is 4 moles of ATP. It is important to note that the exact ATP yield can vary depending on factors such as the efficiency of the electron transport chain and the specific conditions within the cell.Since there are 2 moles of mitochondrial NADH, the total ATP yield would be around 4 to 6 moles of ATP. However, the most accurate option among the given choices is 4 moles of ATP.
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in many single-celled organisms, reproduction occurs asexually by producing spores and sexually by producing?
Answers
In most of the single celled organisms like fungus, spyroghyra, etc, reproduction occurs asexually.
What is TRUE about value conflicts?
Working through these conflicts can help with self-awareness.
Experiencing conflicts between core values is very rare.
It is best to ignore value conflicts when applying for a job.
There is usually one clear winner in each conflict someone faces.
Answers
The statement that is true about value conflicts is: Working through these conflicts can help with self-awareness.
Value conflicts occur when an individual's personal values or beliefs are in conflict with each other or with the values of others. Working through these conflicts can lead to increased self-awareness as individuals explore their beliefs, priorities, and the reasons behind their values. By engaging in reflection and introspection, individuals can gain a deeper understanding of themselves and their values, which can contribute to personal growth and development.
Experiencing conflicts between core values is not necessarily rare as individuals may encounter situations where their values come into conflict, and they must make difficult choices or find ways to reconcile them.
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please help meeèe I really need urs help
Answers
Explanation:
Science and technology help each other advance. Scientific knowledge is used to create new technologies. New technologies often allow scientists to explore nature in different ways and make new discoveries. Examples of technologies that have helped science advance include the telescope and microscope.
why do prevailing winds and positions of islands cause warm ocean currents to pass Christchurch in normal years
Answers
Prevailing winds and positions of islands cause warm ocean currents to pass Christchurch in normal years for the following reasons:
The prevailing winds in the region are generally from the southwest.The position of islands such as New Caledonia and Norfolk Island can also influence the movement of warm ocean currents in the region. In the case of Christchurch, there are a few reasons why warm ocean currents tend to pass by the region in normal years:Warm ocean currents are typically driven by prevailing winds, oceanic currents, and other factors such as the shape of coastlines and the positions of islands.
The prevailing winds in the region are generally from the southwest. These winds blow parallel to the coastline, which means that warm ocean currents are deflected away from the shore and towards the east. As a result, the waters off the coast of Christchurch are generally cooler than those further north or northeast. The position of islands such as New Caledonia and Norfolk Island can also influence the movement of warm ocean currents in the region. These islands help to direct the flow of warm water towards the Coral Sea and the Tasman Sea, rather than towards the coast of New Zealand. This means that Christchurch, which is located on the eastern coast of the South Island, is less likely to experience the effects of warm ocean currents.Note: That oceanic currents and winds can be affected by a range of factors, including El Niño and La Niña events, which can cause changes in sea surface temperatures and alter the path of ocean currents. As a result, there may be some years when warm ocean currents do reach Christchurch, even if this isn't typically the case in normal years.
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primary target of the autonomic nervous system for altering the resistance to blood flow to an organ or tissue.
Answers
Arterioles are the primary target of the autonomic nervous system for altering the resistance to blood flow to an organ or tissue.
The peripheral nervous system's autonomic nervous system controls physiological functions that are carried out automatically, such as digestion, blood pressure, respiration, and sexual desire. There are three physically separate divisions in it: enteric, parasympathetic, and sympathetic.
Both afferent and efferent fibres are found in the sympathetic and parasympathetic nervous systems, which, respectively, supply the central nervous system with sensory input and motor output. A postganglionic neuron with a cell body in the periphery that innervates target tissues and a preganglionic neuron with a cell body in the CNS make up the majority of the SNS and PNS motor pathways.
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Compare and contrast the main characteristics of the alpine and taiga biomes.
Answers
Answer:
Both the alpine and taiga biomes have two distinct seasons. The alpine biome is found on five of the seven continents, while the taiga biome is found on three. The alpine biome gets an average of 12 inches of precipitation annually and the taiga biome gets an average of 12-33 inches annually. Both the alpine and taiga biomes have cold winters with temperatures below freezing and warmer summers. The taiga biome has a greater average temperature range in the summer than does the alpine biome.
Explanation:
There are two separate seasons in both the taiga and alpine biomes. Taiga biomes are only present on three of the seven continents, compared to five for alpine biomes.
What are alpine and taiga biomes?Precipitation averages 12 inches per year for the alpine biome and 12 to 33 inches per year for the taiga ecosystem. Both the alpine and taiga biomes have warmer summers and extremely harsh winters with temperatures below zero.
Similar to the tundra, the taiga has extremely chilly weather. Additionally, it experiences extremely long winters and incredibly brief, warm summers. Although it doesn't get much rain, it usually gets more than the tundra. However, the soil is still very deficient.
Conifers make up the majority of the local life. Because of their cone form, which allows snow to fall off of them, their dark hue, which allows them to absorb thermal energy, and their needles, which help minimize water loss, conifers do well in this habitat.
Therefore, There are two separate seasons in both the taiga and alpine biomes. Taiga biomes are only present on three of the seven continents, compared to five for alpine biomes.
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Parathyroid hormone's main function is to question 4 options: increase glucose mobilization during stress or fasting. increase insulin-like growth factor i and linear body growth. increase calcium by mobilizing the ion from bone. synergize with thyroid hormone in various functions. increase sodium through reabsorption from kidney.
Answers
Answer:
to increase calcium by mobilizing the iron from bone
Explanation:
It does this by stimulating release of calcium from bones and increasing its reabsorption from the kidneys. This helps to maintain calcium homeostasis and is crucial for normal bone metabolism.#spj4
50 points!
In cells, some molecules can move down their concentration gradients by crossing the phospholipid portion of the membrane directly, while others must pass through membrane proteins. Which of these statements applies to facilitated diffusion?
I. requires the use of a membrane protein
II. used to move large/ or polar molecules
III. requires energy
answer choices
I AND III
III ONLY
I ONLY
I AND II
Answers
Correct option a) I AND III
In cells, some molecules can move down their concentration gradients by crossing the lipid portion of the membrane directly, while others must pass through membrane proteins in a process called facilitated diffusion.Here, we're going to appearance in greater element at membrane permeability and one-of-a-kind modes of passive delivery.
The styles of membrane delivery mentioned to date continually contain materials transferring down their awareness gradient. It is likewise viable to transport materials throughout membranes in opposition to their awareness gradient (from regions of low awareness to regions of excessive awareness).
Channel proteins, gated channel proteins, and provider proteins are 3 styles of delivery proteins which are worried in facilitated diffusion. A channel protein, a form of delivery protein, acts like a pore withinside the membrane that shall we water molecules or small ions via quickly.
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