the lowest possible temperature in nature is absolute zero, which defines 0 degrees Kelvin (-273.15 degrees C. or -459.67 degrees F.) If by 'nature' you mean ANYWHERE outside a laboratory, intergalactic space would probably offer the lowest temperatures in the known Universe.
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The lowest temperature possible in nature is absolute zero. Although it cannot be reached in practice, it is assigned the value of zero on the Kelvin scale.
Explanation:This temperature is theoretically the lowest possible temperature and is assigned the value of zero on the Kelvin scale. However, in practice, absolute zero cannot be reached, but the lowest temperatures ever recorded in laboratory experiments were 4.5 × 10-10 K and 1.0 × 10-100 K.
Hence the answer is zero.
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Every cell in the body needs oxygen and nutrients in order to perform cellular functions. Which three organ systems interact to obtain, process, and transport oxygen and nutrients to all of the body's cells?
The respiratory system takes oxygen from the air and sends it from the alveoli to the circulatory system. The circulatory system carries the oxygen and glucose to your cells for energy. And lastly, the digestive system to carry the nutrients and remove the waste.
The organ system which intake oxygen into the body is respiratory system and circulatory system distribute the oxygen all over the body. The nutrients are processed and transported by the digestive system.
What is organ system?An organ system is a group of organs combined to perform one or more specific functions. There are various organs systems in our body namely respiratory system, circulatory system, digestive system, nervous system etc.
Respiratory system involves nasal part and lungs. Oxygen is up taken by this system and stores in the sir sack of lungs. Later blood is oxygenated by circulatory system and distributed throughout the body through veins.
Similarly the nutrients and water from the diet is absorbed by the digestive system including the organs from mouth to stomach. The absorbed nutrients are distributed through blood.
Finally the remaining wastes products are passed to excretory system.
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Colpidium colpoda is a unicellular eukaryote that lives in
freshwater, eats bacteria, and moves by cilia (see Figure
6.23b). Describe how the parts of this cell work together
in the functioning of C. colpoda, including as many
organelles and other cell structures as you can.
Colpidium colpoda is in contact with the environment due to its membrane containing receptor, once it detects the presence of a bacterium able to be phagocyted by the cell, it will go towards it by the cilia there will have membrane invagination due to the contraction of the cytoskeleton (actin-myosin) with the presence of ATP generated by mitochondria, and a stimulation of the secretion of enzymes to degrade the ingenous bacterium (RNA synthesis by the nucleus and translation by ribosomes).
The primary reason steroid hormones usually act slowly is that _____.
Answer:
Because steroid hormones bind to the intracellular receptors and can regulate gene expression (turn the genes on or off).
Explanation:
The receptors located in the nucleus are called intracellular receptor (unlike transmembrane receptor which is located on the membrane). Usually, the ligands of intracellular receptors are small, hydrophobic molecules, since they must pass through the plasma membrane to get to their receptors. For example, hydrophobic steroid hormones, such as estrogen or testosterone are ligands for intracellular receptors.
Intracellular receptors have DNA-binding activity, meaning they can attach to specific sequences of DNA and regulate its gene expression (e.g. transcription).
So, it takes time for them to perform their function.
Steroid hormones act slowly due to their water-insoluble nature, their method of transport via the bloodstream bound to transport proteins, and their intracellular action which involves regulating specific genes to affect protein synthesis.
Explanation:The primary reason steroid hormones usually act slowly is due to their hydrophobic (water-insoluble) nature, like cholesterol, and their mode of transport. These hormones must travel to their target cell bound to a transport protein via the bloodstream, a process which can be relatively slow. Additionally, steroid hormones have a longer half-life as compared to hormones derived from amino acids. For instance, cortisol, a lipid-derived hormone, has a half-life of about 60 to 90 minutes. This is much longer than the half-life of epinephrine, an amino acid derived-hormone, which is about one minute.
Steroid hormones also diffuse across the membrane of the target cell and bind to intracellular receptors, rather than extracellular receptors, which is another reason why their action typically seems slower. This binding triggers a cell signaling pathway that regulates specific genes, leading to changes in protein synthesis and thus alters the cell processes.
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When plants engage in cellular respiration, what will happen to co2 levels in the atmosphere? Why?
Answer:
Increase
Explanation:
Cellular respiration ‘burns glucose for energy as shown in the equation below;
C₆H₁₂O₆ + 6O₂ --> 6CO₂ + 6H₂O + 36 or 38 ATP
One of the end product of this process if carbon dioxide. The carbon dioxide is expelled into the environment.
In an interview, information elicited early from an interviewee carries greater weight than information elicited later.
a. True
b. False
After which checkpoint is the cell first committed to continue the cell cycle through M?
A) G0B) G1C) G2D) SE) previous M
The correct answer is: B) G1
Normal cells (unlike cancer cells), move through the cell cycle in a regulated way in order to make sure that cells don't divide under conditions that are unfavorable for them. Information about their own internal state (nutrients, signal molecules, DNA integrity) is signal to go or not to go through the cell division. Because of that there are few checkpoints in the cell cycle at which the cell examines the signals and makes a “decision”. The major checkpoints are:
• The G1- the first point at which it must choose, once it passes the G1 checkpoint the cell enters S phase
• The G2-the cell checks DNA integrity and checks if replication is done well.
• The spindle checkpoint-at the transition from metaphase to anaphase.
Final answer:
The cell first commits to continue the cell cycle through the M phase after the G₁ checkpoint, where it assesses various conditions favorable for division; hence the correct answer is B) G₁.
Explanation:
The cell is first committed to continue the cell cycle through M phase after the G₁ checkpoint. This checkpoint, also known as the restriction point, determines whether all conditions are favorable for cell division, including adequate reserves, cell size, and DNA integrity. If these conditions are met, the cell commits to the cell division process and passes into the S phase. While the G₂ phase involves a checkpoint to ensure DNA replication was successful and the cell has enough materials for mitosis, the first commitment to proceed with cell division is at the G₁ checkpoint. Therefore, the correct answer to the question is B) G₁.
aquatic plants do not contain
a) chloroplasts
b)cells
c) lignin
d) nuclei
e) chlorophyll
c) lignin
Explanation;Aquatic plants are plants that live within watery environments, they serve as food and habitat for animals living in the sea and prevent shorelines, ponds and lakes from eroding by providing soil stability.Aquatic plants have less rigid structure since water pressure supports them.The cell walls of all vascular plants contain a polymer called lignin. Lignin is water-resistant polymer which reinforces cell walls, keeping them from collapsing.Aquatic plants lack lignin as they are supported by water pressure which prevents them from collapsing and reinforces the cell walls.In which structure of the testes are sperm produced?
seminiferous tubules
Which of the following statements about the import of protein to the nucleus is correct? Choose all that apply.
An NLS can be a monopartite or bipartite signal which includes a significant number of basic amino acids.
GTP is required for an importin to bind to an NLS of a protein destined to be localized to the nucleus.
Ribosomal proteins must display an NLS to be localized to the nucleus, and an NES to be localized to the nucleolus.
The recycling of importins back to their original conformation requires GTP hydrolysis in the cytoplasm.
The correct statements are:
•An NLS can be a monopartite or bipartite signal which includes a significant number of basic amino acids.
• The recycling of importins back to their original conformation requires GTP hydrolysis in the cytoplasm.
The other answers are incorrect because GTP is not required for an importin to bind to an NLS but for the release of importin and an NES or nuclear export signal is the sequence in a protein for export from the cell nucleus to the cytoplasm, not to the nucleolus.
A nurse is caring for an adolescent client with autism spectrum disorder. define autism spectrum disorder. what are common manifestations of autism spectrum disorder?
Autism spectrum disorder can be defined as a complex developmental disorder that influences communication and behavior of affected persons. This disorder cause problems in social interaction and it also cause restricted and repetitive patterns of actions or behavior.
Common manifestations of autism spectrum disorder include; repetitive actions or thoughts, delayed speech and language skills, avoidance of eye contacts, high sensitivity to light, sound and touch, short attention span and hyper behavior.
Autism spectrum disorder is a neurodevelopmental disorder characterized by impaired social interaction and communication abilities. Common manifestations include deficits in social interaction communication difficulties repetitive patterns of behavior or interests and difficulties in using and understanding nonverbal cues.
Explanation:Autism spectrum disorder is a neurodevelopmental disorder characterized by impaired social interaction and communication abilities. It is a spectrum disorder meaning its severity can differ from person to person. Common manifestations of autism spectrum disorder include deficits in social interaction communication difficulties repetitive patterns of behavior or interests, and difficulties in using and understanding nonverbal cues.
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The cranium provides protection for what important organ in the body?
From what I know the cranium protects the organ called the brain. It is made up of 8 different bones that supports your head & protects your brain from injury. Some of the other bones protect the sides of the brain & supports the sides of your face. The cranium is basically a cozy little home for your brain.
What happens to the two original strands of a dna molecule after the dna has replicated?
Dna is copied in a cell before a cell divides. Two nucleotide strands of original double helix separate along the strands. ... They move along the DNA molecule breaking the hydrogen bonds between the complementary nitrogen bases. Replication fork- y shaped region that results when two strands separate.
After DNA replication, the two original DNA strands each become part of separate identical DNA molecules, due to semiconservative replication. They retain their original sequence and are segregated into two daughter cells.
Explanation:During DNA replication, the two original strands of a DNA molecule serve as templates for the creation of two new complementary strands. This process ensures that each of the resulting daughter DNA molecules consists of one old (parental) strand and one newly synthesized strand, a method known as semiconservative replication. Thus, after DNA has replicated, the two original strands become part of two separate, but identical,
DNA molecules. Each double helix has the same sequence as the original, and they are divided equally into the two daughter cells during cell division. The accurate replication of DNA is crucial for maintaining the genetic integrity of living organisms
Of all the organisms that are living today what percentage will eventually become fossils
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↪ I think its from 6%-10% of living organisms today that will become fossils
↪ Animals have a less likely chance since they have parts that are difficult to become fossils (like teeth, bones)
↪ Plants may decompose and go underwater to be used as Crude Oil
↪ Most of the population are humans, which will be extremely hard to fossilise
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Neurons generally receive information via their
a. cell bodies.b. nerves.c. dendrites.d. glial cells. e. axons.
C. Neurons generally receive their information via dendrites
Which of these is NOT one of the four major categories of tissue?
muscle
epithelial
connective
blood
nervous
the 4 major categories of tissue are: muscle, epithelial, connective, and nervous.
blood is not a tissue.
The four major categories of tissue include muscle, epithelial, connective, and nervous tissue. Blood is not categorized as a tissue per say, but is often considered a specialized type of connective tissue, specifically, blood or vascular tissue.
Explanation:The four major categories of tissue in the human body are muscle, epithelial, connective, and nervous tissue. Muscle tissue is responsible for movement in the body; epithelial tissue serves protective, sensory, and secretory purposes; connective tissue supports binds, and protects other tissues and organs; and nervous tissue is involved in receiving stimuli and transmitting signals.
Blood, on the other hand, while an important component of the body, is not categorized as a tissue. It's often considered a specialized type of connective tissue, but it falls under a subset, of blood, or vascular tissue. So, among your options, blood is NOT one of the four major categories of tissue.
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Six basic colors are used in decorating a new condominium. they are applied to a unit in groups of four colors. one unit might have gold as the principal color, blue as a complementary color, red as the accent color and touches of white. another unit might have blue as the principal color, white as the complimentary color, gold as the accent color and touches of red. if repetitions are permitted, how many different units can be decorated?
The answer is 1,296
Six basic colors are used in decorating a new condominium. they are applied to a unit in groups of four colors. 1296 is the different units can be decorated.
What is condominium ?
A condominium or a condo which is a large housing complex can be divided into individual parts for the purpose of sale and each unit having an individual title and could be separately owned.
An individual rents a condo, this means he is renting directly from the condominium owner or landlord, these Condos are also commonly called as a ‘common interest development’, as the condo ownership includes a common interest in certain community property .
The management of Condominium or homeowners' association, consist of a board of unit owners who come together to check the daily operation and maintenance of the development.
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8. Agent that kills microorganisms, rather than inhibits it:
Agent that kills microorganisms, rather than inhibits it: bactericid e
Microbial growth can be controlled and that control usually involves the use of physical or chemical agents. Chemical agents which either kill the microorganisms are called cidal agents while those that prevent their growth are referred to as static agents. of microorganisms. Thus, the term bactericidal refers to killing bacteria, and bacteriostatic refers to inhibiting the growth of bacterial cells.
what are surfaces with high albedo and low albedo?
Albedo is the measurement of a surfaces ability to diffuse and reflect oncoming radiation, scores range from 0 ( an ideal blackbody that absorbs any and all incident radiation) to 1 ( an ideal white body that completely diffuses and reflects all incident radiation). A simple way to think about this concept is in the terms of sunlight, a black or darkly colored surface will always absorb much more of the heat (radiation) than a white or lighter colored one, for the lighter objects reflect the sun's energy much easier.
Answer:
This effect is nothing other than the reflection of solar radiation when it affects the planet. Light surfaces have more albedo reflecting most of the radiation and dark surfaces less albedo since they absorb radiation.
Explanation:
The albedo of all these combined surfaces is called the planetary albedo. The planetary albedo of the earth is approximately 0.31. That means that about one third of the solar energy that reaches the earth is reflected back into space and only about two thirds is absorbed. The albedo of the moon is 0.07, which means that only 7% of the energy that reaches it is reflected. The albedo of distant planets, so distant that they are difficult to study with telescopes, could be very helpful for scientists trying to determine what a planet is made of.
This effect is much greater the clearer the surface; for example, on snow or ice surfaces, up to 90% of the incident radiation can be reflected and therefore the UV rays would bounce continuously between the snow and the atmosphere. This effect is therefore a source for example of the thaw after glacial times, where with so much white surface the world temperature overheats and the glacier season ends.
The albedo effect is very significant for the human being, and more now when many of the defenders of the theory of global warming, come to their reasoning to explain how if the poles melt and there are less and less glaciers the earth by natural order is It will start to reheat faster.
Organic sediment on lake bottoms and the ocean floor is broken down by microbes into inorganic forms of phosphorus in a process known as ________?
the process is best known as eutrophication
Answer:
Eutrophication
Explanation:
Organic sediments at the bottom of the lakes and at the bottom of the ocean are broken down by microbes into inorganic phosphorus forms in a process known as eutrophication.
Eutrophication (or eutrophication) is a process usually of anthropic origin (caused by man), or rarely of a natural nature, having as its basic principle the gradual concentration of accumulated organic matter in aquatic environments. Among the impact factors, contributing to the increasing pollution rate in this ecosystem, are: domestic waste (sewage), agricultural fertilizers and industrial effluents, directly discharged or percolated towards watercourses (rivers and lakes, for example).
During this process, the excessive amount of minerals (phosphate and nitrate) induces the multiplication of microorganisms (algae) that inhabit the surface of the water, forming a dense layer, preventing the penetration of light.
The drug AZT was one of the first drugs used to treat HIV. Which of the following drug actions would prevent the spread of HIV without harming the host cell?
prevention of the formation of glycoproteins
inhibition of reverse transcriptase
inhibition of DNA polymerase
destruction of amino acids that are vital to viral protein synthesis
The correct answer is: inhibition of reverse transcriptase
Reverse transcriptase is an enzyme with the ability to produce DNA (complementary DNA-cDNA) form the RNA template. Retroviruses, such as HIV virus after entering the cell, liberates the single-stranded RNA genome from the attached viral proteins and copies it into a cDNA molecule, That cDNA is than incorporated into host’s genome (via an enzyme integrase).
Antriretroviral medications such as AZT are inhibitors of reverse transcriptase, they decrease replication of the virus but not affecting the host.
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Cutting down a rainforest and planting agricultural crops, such as coffee plants, would result in:
a decrease in erosion
a decrease in biodiversity
an increase in the amount of energy recycled
an increase in the amount of photosynthesis
Answer:
The correct answer is B a decrease in biodiversity.
Explanation:
Cutting down a rainforest has nothing to do with erosion so A is not correct. Cutting down a rainforest will not increase recycled energy so C is also wrong. Lastly a rainforest will have more photosynthesis being performed than agricultural crops. So D is ruled out. This leaves B because rainforests are filled with biodiversity and cutting one down would lead to a decrease in it.
Cutting down a rainforest generally results in a decrease in biodiversity and overall photosynthesis, and an increase in erosion. The dense vegetation and unique ecosystem of the rainforest play significant roles in nutrient cycling and energy flow, which are disrupted when replaced with agricultural crops.
Explanation:Cutting down a rainforest for agricultural activities like planting coffee plants mostly results in a decrease in biodiversity. Rainforests are home to many unique species of plants and animals, many of which are unable to survive in other habitats. When the rainforest is removed, these species lose their habitat and may become extinct, resulting in decreased biodiversity.
In terms of results on erosion, rainforest removal often causes an increase in erosion. The complex root systems of rainforest trees help to hold the soil in place. When these trees are removed for farming, the soil is more exposed and can be washed away by rain.
On the matters of energy recycling and photosynthesis, the cutting down of rainforests generally leads to a decrease in both. The dense vegetation of the rainforests plays a crucial role in the nutrient cycling and energy flow within the ecosystem. In addition, because rainforest trees perform photosynthesis at a much larger scale than crops, replacing them with agricultural plants actually reduces the overall rate of photosynthesis.
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Fungal cell walls are composed of what material?
Bacterial cell walls are made of peptidoglycan (also called murein), which is made from polysaccharide chains cross-linked by unusual peptides containing D-amino acids. Bacterial cell walls are different from the cell walls of plants and fungi which are made of cellulose and chitin, respectively.
Linoleic acid is a polyunsaturated fatty acid found
Here is the complete statement: Linoleic acid is a polyunsaturated fatty acid found in PLANT OILS.
Linoleic acid is a polyunsaturated essential fatty acid that is used in the biosynthesis of prostaglandins and cell membranes. It can be found in plants glycosides (it is especially plentiful in canola oil) in natures and it is an essential fatty acid that humans need in their diets. In humans, linoleic acids are found majorly in the brain and in the retina. The acid is very important for brain growth and development especially in children.
Which is an endocrine function?
A. The pancreas releases insulin into the bloodstream.
B. Salivary glands release saliva into the mouth.
C. Pyloric glands release mucus to the stomach.
D. Sweat glands release sweat to the skin.
A. The pancreas releases insulin into the bloodstream.
Answer:
a
Explanation:
What do manufacturers use water for?
A. to transport people
B. to irrigate farms
C.to create tools
D.to produce wood and paper products
Answer: It is D. To produce wood and paper products.
Explanation: I took the test and got it right.
Answer: D.to produce wood and paper products
Explanation:
The wood and paper products requires water. Wood chips, logs are used for manufacturing of paper, cardboard and packaging material. In the manufacturing process the fine slurry of wood material is prepared by adding water with fine grained wood fibers this is called as wood mulch. This mulch is dried in sunlight and afterwords used for manufacturing of products.
Which information on an autopsy report would be essential for evaluating a suspect's alibi?
A.) cause of death
B.) mechanism of death
C.) time of death
D.) manner of death
The answer to your question: cause of death.
Answer: Cause of death.
Explanation: The autopsy can be done in order to know the main cause of the death.
Autopsy can be used to know to reason behind the death of the person. This technique uses various kinds of principles and methodologies to known the exact cause of the death of the person.
This can be used for evaluating the suspect's alibi.
Earth's magnetic field is created by the (2 points)
bar magnets
reaction forces
gravitational forces
flow of electric charges
Which layer of the digestive tract contains the effectors for digestive propulsion?
the answer is muscularis externa
Final answer:
The muscularis externa is the layer of the digestive tract that contains the effectors for digestive propulsion.
Explanation:
The layer of the digestive tract that contains the effectors for digestive propulsion is the muscularis externa. The muscularis externa is the third layer of the alimentary canal and is responsible for the contractions that promote mechanical digestion, expose food to digestive chemicals, and move the food along the canal. It consists of smooth muscle layers, including an inner circular layer and an outer longitudinal layer.
What is the The area that includes everything between the cell membrane and the nucleus of a cell
I believe the answer is Cytoplasm.
The arrows in the illustration are pointing to A) homozygous alleles on homologous chromosomes. B) homozygous alleles on homozygous chromosomes. C) heterozygous alleles on homologous chromosomes. Eliminate D) heterozygous alleles on heterozygous chromosomes.
Answer:
The answer is D
Explanation:
I just took the test. I got it wrong when I did C and it said the correct answer was D. :/
Answer:
The answer is D
Explanation:
Because I said so