Answer:
They concluded that DNA is a genetic material.
Explanation:
This experiment shows that the DNA is genetic material. For performing experiments, the DNA of bacteriophages is labelled with radioactive phosphorous (32P) and proteins were labelled with sulfur (35S) in order to detect the action of bacteriophages. The bacteriophages attack on the bacteria by inserting its DNA in the bacteria. We can see this because radioactive phosphorus is present in DNA of bacteriophages while the protein did not enter into the bacteria and remain outside the cell and we can see it because protein is made up of sulphur.
In response to high amounts of phosphate transport into the cell: a. PhoR is phosphorylated by the phosphate transporter protein Pst b. PhoR binds with PhoB to remove PhoB repression of phosphate regulon genes c. PhoR is exported out of the cell to scavenge phosphate molecules d. PhoU changes conformation to allow PhoR to autophosphorylate e. PhoU keeps PhoR bound to the phosphate transporter protein Pst
Answer:
e. PhoU keeps PhoR bound to the phosphate transporter protein Pst
Explanation:
PhoU is a membrane protein known to regulate the transport of phosphate (Pi) between cellular compartments. It has been discovered that mutations in this protein cause lethality because the cell becomes incapable of controlling the intracellular levels of Pi, this being toxic for the cell. PhoR is a histidine kinase/phosphatase. When the Pi level is considered to be a limiting factor, PhoR autophosphorylates at a histidine residue and then donates its phosphoryl group to PhoB. On the other hand, when the Pi level is high, this protein removes the phosphoryl group from phospho-PhoB. Finally, the Pst is a signal transduction protein that acts as a transporter capable of switching its conformation during the transport of PI.
0cm3 of acid were mixed with 60cm3 of alkali in an insulated container. The average temperature of the two solutions before they were mixed was 19.5°C. The temperature after mixing was 27.5°C. Was this an exothermic or an endothermic reaction?
Answer: Endothermic reaction.
Explanation: An endothermic reaction is any chemical reaction that absorbs heat from its environment. In this reaction, the temperature of the mixture raised from 19.5°C to 27.5°C, which means there was an increase of heat, ergo, it is an endothermic reaction.
What is the role of xylem in a vascular plant?
A. Transports salt to the roots of the plant
B. Transports chloroplasts to the leaves of the plant
C. Transports carbohydrates from the leaves to the roots
D. Transports material from the roots up into the plant
SUBMIT
the correct answer is D
The role of the xylem in a vascular plant is to transport material from the roots up into the plant.
What do you mean by Vascular plants?Vascular plants may be defined as those plants that have a specialized conducting system that includes xylem and phloem.
Xylem is known to transport water and all essential nutrients and minerals from the roots to the leaves.
Phloem on the other hand transport food from the leaves to the roots.
Therefore, the role of the xylem in a vascular plant is to transport material from the roots up into the plant.
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Put the following events that occur in a reflex arc in the correct order. Rank the options below. The motor neuron conducts action potentials through the anterior root and spinal nerve to an effector organ The motor neuron conducts action potentials through the anterior root and spinal nerve to an effector organ Open choices for matching The interneuron synapses with a motor neuron The interneuron synapses with a motor neuron Open choices for matching The sensory neuron synapses with an interneuron The sensory neuron synapses with an interneuron Open choices for matching A sensory neuron conducts action potentials through the nerve to the spinal cord A sensory neuron conducts action potentials through the nerve to the spinal cord Open choices for matching A sensory receptor detects a stimulus
Answer: Please see the explanation column for answers
Explanation:
A reflex arc is a nerve or neural pathway that controls a reflex action giving fast response to a stimulus without the conscious act of the brain. Here, the sensory neurons receive stimulation then synapses or connects to spinal motor neurons nerve cells which then connects to muscle cells acting as effectors.
Ranking the events that occur in the reflex arc in correct order gives
1st ---- A sensory receptor detects a stimulus
2nd---A sensory neuron conducts action potentials through the nerve to the spinal cord
3rd----- The sensory neuron synapses with an interneuron
4th----- The interneuron synapses with a motor neuron
5th------- The motor neuron conducts action potentials through the anterior root and spinal nerve to an effector organ.
The structural and functional unit of skeletal muscle is called a/an . The connective tissue covering around a fascicle is the . The part of a muscle fiber that contracts is called a/an . The connective tissue covering an individual muscle fiber is the . The connective tissue covering on the outside of a whole muscle is the .
Answer:
The structural and functional unit of skeletal muscle is called a sacormere
The connective tissue covering around a fascicle is the perimysium
The part of a muscle fiber that contracts is called the myofibril
The connective tissue covering on the outside of a whole muscle is the Epimysium
Explanation:
There are 4 types of biomes.
Please select the best answer from the choices provided
T
F
Answer:
False
Explanation:
In the process of respiration, energy is released from ______
molecules and stored in smaller ______ molecules.
A. protein, ATP
B. food, glucose
C. lipids, triglycerides
D. glucose, ATP
Answer:
The answer is option D.
Hope this helps you
Answer:
In the process of respiration, energy is released from glucose molecules and stored in smaller ATP molecules.
Explanation:
Among carbohydrates, protein and fat, carbohydrates are metabolized first on respiration.
Glucose first breaks into pyruvic acid (Glycolysis) Pyruvic acid forms acetyl coA (Link reaction) Acetyl coA enters into the kreb cycle, where ATP is formed. ATP formed through substrate level phosphorylation (direct ATP) and Electron transport chain (indirect ATP). NADH2 and FADH2 formed during respiration enters into ETC where they form ATP through oxidative phosphorylation.Thus, we can say that the correct option is D. Glucose, ATP.
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The unusual patterns on a silk moths wings are one of the most stunning examples of mimicry in the wild,mimicry can protect the moth?
The question is incomplete. The complete question is as follows:
The unusual patterns on a silk moth’s wings are one of the most stunning examples of mimicry in the wild. Mimicry occurs when an organism develops a physical characteristic or behavior similar to a protective trait in another species. What do you think these moth wings mimic? Why do you think this kind of mimicry can protect the moth?
Answer:
The silk moth's mimic the physical characteristics such as changes in wings pattern that resemble another moth species that is dangerous or unpalatable to predators.
This unusual change in wings pattern provide camouflage to the silk moths and prevent predators. Predators get confuse because of the mimic spcies and consider them as toxic or untasty and won’t attack.
Answer:
The moth wings actually look like the eyes of a much larger animal. This mimicry may protect the moth from predators.
Explanation: EDMENTUM ANSWER
State the characteristic of tracheoles that help with gaseous exchange
in insects.
Answer:
made up of a single epithelium layer to allow diffusion of gases.terminal ends of fine tracheoles are filled with a fluid in which gases dissolve and therefore transported in solution formSome viruses can be crystallized and their structures analyzed. One such virus is yellow mottle virus, which infects beans. This virus has a single-stranded RNA genome containing about 6300 nucleotides. Its capsid is 25-30 nm in diameter and contains 180 identical capsomeres.If the yellow mottle virus begins its infection of a cell by using its genome as mRNA, which of the following would you expect to be able to measure?
A) replication rate
B) transcription rate
C) translation rate
D) formation of new transcription factors
The correct answer is 9 proteins form each of the 20 facets of this virus. A capsid is the protein shell that surrounds a virus. A capsomere is the subunit of the capsid. Depending on the virus, capsomeres arrange in many different shapes to form the capsid. The yellow mottle virus has 20 facets, this means that it has an icosahedral capsid. Since it contains 180 identical capsomeres, we can conclude that 9 proteins form each facet.
Ash trees are being removed when they show signs of the ash borer, a parasite that affects only ash trees and kills them off. What best explains why the ash trees are being cut down? The ash borer is a density-independent limiting factor, and humans need to clear cut to control tree density. The ash borer is a density-dependent limiting factor and will start to spread to nearby healthy trees. Ash trees are outcompeting other trees and are thus more affected by the ash borer. Changes in climate have decreased ash borer populations which indirectly increased the need for cutting down the trees.
Answer:
The ash borer is a density-dependent limiting factor and will start to spread to nearby healthy trees.
Explanation:
Ash borer is a parasite that affects ash trees it is highly destructive and invasive. It affects it Native host causing serious damages. Infected plant is cut down to avoid its spread to other healthy plant this is because ash bored when not control can destroy a whole population of ash trees in it Native environment within the space of 10 years. Its population dependent and would keep increasing in population and become more destructive. Thus, to avoid its spread infected trees are treated cut down and cut down.
Blue ash a type of ash tree shows high resistance to ash borer because of it high tanning content that makes the leaf not suitable to consume to them.
Answer:b
Explanation:
The chemical equation of photosynthesis includes 602. Which best describes this substance?
a solid used during photosynthesis.
a gas used during photosynthesis.
a liquid produced during photosynthesis.
a gas produced during photosynthesis.
Answer:
The correct option is;
A gas produced during photosynthesis
Explanation:
The chemical reaction of photosynthesis is given as follows;
6CO₂(g) + 6H₂O(l) + Energy from light → C₆H₁₂O₆(s) + 6O₂(g)
Therefore, six molecules of gaseous carbon dioxide (CO₂) combine withe six molecules of liquid water (H₂O) in the presence of energy from Sunlight to produce one molecule of solid glucose (C₆H₁₂O₆) and six molecules of gaseous oxygen (O₂)
The 6O₂ is the gaseous oxygen produced as a byproduct of photosynthesis
Answer:
D
Explanation:
How would the coils in the middle of the diagram
change to show a longitudinal wave with higher
energy?
They would be farther apart.
They would be closer together.
They would be shaped like a hill.
They would be shaped like a valley.
Answer:
The correct answer is - option C.
Explanation:
A longitudinal wave with higher vitality have more noteworthy plentifulness. Abundancy is the separation between the covering and trough of the wave. The crust is the topmost layer of the wave while trough is present at the bottom portion of the wave.
In the event that the separation among crust and trough of the wave is higher so the amplitude is likewise more prominent and we can say that the wave contains a high measure of vitality and the other way around. The state of the structure of the wave simply like a hill.
Thus, the correct answer is - option C.
Answer:
C
Explanation:
edge 2023
why the process of photosynthesis is important to life on Earth?
Answer:
Photosynthesis captures light energy from the Sun and stores it in the bonds of glucose, which is then used during cellular respiration to drive the formation of ATP in all plants and animals.
hope this can help you .
14. The first system to classify blood types is known as which of the following?
O A-S-R system
O B-D-G system
O A-B-O system
O C-O-V system
Sion
sion
Answer:
A-S-R system
Explanation:
A-S-R system
Answer:
a-s-r
Explanation:
a-s-r
Which sentence supports the statement that complex, multicellular organisms are made up of specialized cells that each perform different functions for the body?
A.
Human liver cells make proteins that promote homeostasis that neurons do not.
B.
Different species of bacteria have different shapes and structures to their cells.
C.
The DNA in the cell nucleus of chimpanzees and humans are 98% identical.
D.
Prokaryotes do not have nuclei, but they can still carry out the basic functions of life.
Answer:
A
Explanation:
Human liver cell make proteins that promote homeostasis that neurons don't have.
Homeostasis is the regulation of an internal steady environment.
Based on the information in the graph, what conclusions can be drawn about the rate of skin cancer in men
compared to that in women?
than in women
Answer:
The correct answer is - Skin cancer increased at a faster rate in men than in women.
Explanation:
Skin malignant growth is the most well-known disease in the entirety of mankind. Although white and albino skinned person individuals have a more possibility of building up this malignancy, consistent exposure to the sun with no skin security has caused an expansion in instances of skin disease regardless to the person's skin shading.
In spite of being a typical disease in ladies, skin malignancy has been developing exponentially among men as of late. This is primarily on the grounds that ladies will in general take more consideration of their skin and ensure it more regularly than men.
Thus, the correct answer is - Skin cancer increased at a faster rate in men than in women.
What would happen if sex cells underwent mitosis instead of meiosis
Answer:
If gametes (sperm and egg) were made by mitosis, then they would be diploid. ... A tetraploid zygote is not viable and will most likely miscarriage.
Explanation:
Water is essential for the growth of crop plants. But excessive supply of water should be avoided. Give reason.
Answer:
Soil can become waterlogged. The water can cut off the air supply to the roots and to the organisms that live in the soil. If the roots do not receive enough oxygen, the plants will die because they rely on oxygen to complete photosynthesis.
Explanation:
Answer:
We should avoid watering the plants so much
Explanation:
It can lead to the growth of plants and will not grow properly
The pathogenesis of tuberculosis includes the entrance of mycobacteria into the lungs and the resulting of which of the following? (Select all that apply.) Calcification Ghon tubercles Formation of granulomas Activation of macrophages Antigen-antibody complexes
Answer:
The macrophages have a in the calcification process, which generates the inflammatory processes. The Ghon tubercles is a lung lesion caused in tuberculosis that consists of a focus of calcification in conjunction with a lymph node infection. A granuloma is a mass of immune cells that forms when the immune system tries to isolate foreign substances.Macrophages can be activated by a variety of stimuli during the immune response. The antigen-antibody (Ag-Ac) reaction is one of the molecular reactions in the body's immune response.Explanation:
Tuberculosis is a disease caused by Mycobacterium tuberculosis, a bacterium that almost always affects the lungs. When the active form of the disease is present, symptoms (cough, fever, night sweats, weight loss, etc.) can be mild for many months. If not treated properly, Tuberculosis can be fatal.
Macrophages are a type of white blood cell found in the blood and they are the first body's defense against foreign substances. So they are effector cells of the immune system, the main players in the innate immune response.
When M. Tuberculosis infects a person, it attacks this first-response immune cells in the lungs, the macrophages. When they recognize these pathogens, macrophages produce the cytokines IL-1 and TNF-α, which cause the inflammation itself by acting on the endothelial cells of the nearby blood vessels to allow the transendothelial migration of the leukocytes. The inflammation t is a non-specific response to environmental aggressions, and its purpose is the isolation and destruction of the damaging agent, as well as repairing the damaged tissue or organ.
The macrophages have a in the calcification process, which generates the inflammatory processes. The Ghon tubercles is a lung lesion caused in tuberculosis that consists of a focus of calcification in conjunction with a lymph node infection. These lesions are especially common in children and may retain viable bacteria, so they are sources of disease transmission and may also be associated with classic tuberculosis reactivation after several years of inactivity.A granuloma is a roughly spherical mass of immune cells that forms when the immune system tries to isolate foreign substances that it has been unable to eliminate. Therefore it is a special type of inflammation that can occur in a wide variety of diseases. Infections that are characterized by granulomas include tuberculosis, but also include for example leprosy, histoplasmosis, cryptococcosis, coccidioidomycosis, blastomycosis, and cat scratch disease.Macrophages are usually in a resting state, they can be activated by a variety of stimuli during the immune response. Antigen phagocytosis serves as an initial stimulus; however, macrophages and their activity can be increased by cytokines secreted by, or through contact with, helper T-lymphocytes. One of the most powerful macrophage activators is gamma interferon. They are also able to recognize molecular patterns associated with pathogens. M. tuberculosis is a pathogen that contains Pathogen-associated molecular patterns (PAMPS), which are small sequences of molecules that repeat in groups of pathogens. They are recognised by Pattern-recognition receptors (PRRs), which include the Toll-like receptor (TLRs) family or the NOD-like receptors (NLRs). Once the receptors found in the macrophages recognize these PAMPS, the macrophages are activated are ready to perform an immune response.The antigen-antibody (Ag-Ac) reaction is one of the molecular reactions in the body's immune response. The concept refers to the specific binding of an antibody to an antigen to inhibit or delay its toxicity. When the macrophage recognizes a pathogen, it phagocytes it and degrades it, and presents its peptides to a T cell. This can activate a cytotoxic response, causing apoptosis of infected cells. Or, the T cell may activate a B cell to produce antibodies. Antibodies are proteins whose function is to detect any foreign elements that may enter the body. They normally detect specific parts of these elements, for example, proteins from the surface of bacteria or viruses. When antibodies bind to these foreign proteins, they act as a marker, making it easier for them to be recognised and eliminated by the cells of the immune system.Chloride ions, Cl-, follow actively transported Na+ ions from the nephrons into the blood. Would you not expect the Cl- concentration to decrease as fluids are extracted along the nephron?
Answer:
Bicarbonate ion, HCO3- (which has a similar charge to chloride ions) also follow sodium ions into the blood. Also, potassium ions, K+ are transported into the nephron so some chloride ions and bicarbonate ions remains in the nephron to balance the charge.
Explanation:
Sodium is the primary positively charged electrolyte in extracellular fluid. Most of the solute reabsorbed in the proximal tubule is in the form of sodium bicarbonate and sodium chloride. Water is also reabsorbed in order to balance osmotic pressure
When sodium ions are reabsorbed into the blood, few of the substances that are transported with Na+ on the membrane facing the lumen of the tubules include Cl- ions, Ca2+ ions, amino acids, and glucose. Sodium is actively exchanged for K+ using ATP on the basal membrane.
In the distal convoluted tubule, K+ and H+ ions are selectively secreted into the filtrate, while Na+, Cl-, and HCO3- ions are reabsorbed to maintain pH and electrolyte balance in the blood.
Some chloride ions remains in the nephron to balance the charge of the secreted K+ ions and also due to the bicarbonate ions that are removed.
The concentration of Chlorine decreases as fluids are extracted along the nephron because it is not soluble in water. With an increase in the fluid extraction along the nephron, there is the reabsorption of more water and since Chlorine cannot be diluted by water, its concentration decreases. With the more reabsorption of water and increase in its concentration as the fluid moves through the nephron, the relative concentration of chlorine reduces.
This gradient is mainly caused by NaCl and urea. NaCl is transported by the ascending limb of Henle's loop which is exchanged with the descending limb of the vasa recta.
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What happens when someone's brain has a low level of neurotransmitters?
A. Motor neurons aren't able to send messages to muscles,
O B. Action potentials can't form in the sensory neurons.
O C. The nervous system can't create hormones,
O D. Neurons aren't able to communicate with each other.
Answer:
Neurons aren't able to communicate with each other.
Answer: D
Explanation:
Together, the stages of cellular respiration break down one molecule of ___ to generate a total of ____ molecules of ATP. The remaining energy is released as __ .
Answer:
1) Glucose
2) 36
3) Heat
Explanation:
Cellular respiration is a metabolic process that every living organism undergo. It is the process by which energy is obtained by living cells. In the process of celluar respiration, energy-storing food molecule called Glucose is broken down in the presence of oxygen in order to release its energy and convert it to a usable form by the cell called ATP.
Celluar respiration occurs in three distinct stages in eukaryotes viz: Glycolysis Kreb's cycle and Oxidative phosphorylation. In Glycolysis, which occurs in the cytoplasm, glucose is broken down in a series of enzymatic reaction to yield Pyruvate and releasing a net gain of 2 ATP molecules. In Kreb's cycle, which occurs in the mitochondrion, produces carbondioxide in a two-cycled reaction involving Pyruvate. 2 ATPs are also produced in this stage.
Lastly, in Oxidative phosphorylation also occuring in the mitochondrion, electrons are passed through electron acceptors to create a pump that generates the synthesis of 32 ATP molecules. In general, the three stages yield a total of 36ATP molecules from one molecule of GLUCOSE.
The rest of the energy from the oxidation of glucose is lost as heat energy, which is responsible for the warming effect we feel.
Many biochemical reactions that occur in the cell are nonspontaneous when measured at the biochemical standard state, but are spontaneous inside of the cell. What is the most likely explanation for this difference in spontaneity for the same reaction measured under different conditions
The concentrations of reactants and products inside the cell favor the reactants.
I will give brainliest and thanks! Which statement about biomass energy is correct? A. Biomass energy is a nonrenewable resource that makes use of materials from recently living organisms. B. Biomass energy is a nonrenewable resource that involves the use of fossil fuels. C. Biomass energy is a renewable resource that cannot be used to generate electricity. D. Biomass energy is a renewable resource that releases pollutants into the air.
Answer:
a
Explanation:
Biomass energy is in fact a nonrenewable resource that makes use of materials from recently living organisms
( please mark me as brainliest, that would be most apprieciated! )
The statement about biomass energy is correct as the biomass energy is a nonrenewable resource that makes use of materials from recently living organisms and is present in Option A as it can end one day.
What is the significance of biomass energy?Biomass energy uses organic materials, such as wood chips, agricultural waste, etc., and they release pollutants into the air that can occur during the burning of biomass, which can be mitigated through the use of modern, efficient combustion. Due to its low carbon emissions, biomass releases fewer carbon emissions when burned than fossil fuels.
Hence, the statement about biomass energy is correct as the biomass energy is a nonrenewable resource that makes use of materials from recently living organisms and is present in Option A as it can end one day.
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Em 2015, os países e a população global se reuniram para decidirem sobre novos caminhos, melhorando a vida das pessoas em todos os lugares. Essas decisões foram fundamentais para determinar ações globais para acabar com a pobreza, promover a prosperidade e o bem-estar para todos, proteger o meio ambiente e enfrentar as mudanças climáticas. As ações adotadas pelos Estados-membros resultaram em 17 Objetivos de Desenvolvimento Sustentável (ODS). Quais objetivos têm relação com o consumo sustentável? Qual o resultado esperado com a prática 12 para o consumo mais sustentável da população global?
Answer:
O principal objetivo da prática 12 é reduzir as perdas e usar os recursos naturais de maneira adequada.
Explanation:
Consumo sustentável significa que o uso dos recursos naturais é muito eficiente para evitar a poluição do meio ambiente. recicle o material usado e use-o novamente para reduzir o custo e também a poluição que ocorre durante sua fabricação. Use materiais que não agridam o meio ambiente e reduzam o uso de combustíveis fósseis. Reduzir perdas de alimentos e também evitar perdas que ocorrem após a colheita da colheita, a fim de fornecer mais alimentos para a população existente. O resultado esperado com a prática número 12 para um consumo mais sustentável pela população global é que mais alimentos e recursos estejam disponíveis para a população existente. população.
Study the map. Which plate forms a boundary with the African Plate?
Answer:
down below
Explanation:
The western edge of the African Plate is a divergent boundary with the North American Plate to the north and the South American Plate to the south which forms the central and southern part of the Mid-Atlantic Ridge.
Answer:
south american
Explanation:
helloo guysss pleaseeee help with this one
Answer
Uses of yeast
Fermentation BiomassGlycerol Alcoholic beverageYeast is found on the outer surface of sugary substances like fruits and grains.
Hope it helps :)
Answer:
i'm not in my biology class yet
Explanation:
i trust this thou Uses of yeast
Fermentation
Biomass
Glycerol
Alcoholic beverage
Yeast is found on the outer surface of sugary substances like fruits and grains.
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In the product 6O2, what does the coefficient mean? There are 12 molecules of O2, There are 8 molecules of O2, There are 6 molecules of O2. There are 2 molecules of O2.
In the product 6O2, there are 6 molecules of O2.
WHAT COEFFICIENT MEANS:
Coefficient, in chemistry, refers to the number behind an element. It represents the number of molecules of that element. The coefficient tells us the amount of molecules contained in an element. For example;In the product 6O2, this tells us that there are 6 molecules of oxygen gas (O2). Other examples are: 2Mn meaning 2 molecules of manganese, 3CO2 meaning 3 molecules of carbon dioxide etc.Learn more: https://brainly.com/question/11815186?referrer=searchResults
What type of data is recorded by the electrocardiograph?
Answer:
Electrical signals from your heart to check for conditions and illnesses that can be detected by this data.