Select all of the following statements that are true concerning living organisms and how they acquire energy. check all that apply A. Cells, the basic unit of life, cannot survive on their own. Instead, all living organisms must obtain and use energy to live. B. Energy flows through a system by being captured, changing forms, used for work, and lost as heat.
C. Instead of a constant input of energy, energy is recycled by organisms.instead of a constant input of energy, energy is recycled by organisms. D. The daily food consumption of an organism provides the energy to support all the metabolic process required for the organism to live.
E. Life runs on mechanical energy from food.life runs on mechanical energy from food.

The average annual temperature, precipitation, and yearly variation in temperature and precipitation are the primary metrics used by biologists to identify and characterize climate in a region.

Only when these will merge into larger drops through turbulence, in which water droplets clash and produce even larger droplets, is precipitation feasible. The droplets eventually descend, agglomerate, and grow heavy from resistance, and they finally fall as rain.

When cloud droplets or ice particles in the clouds develop and merge, they can no longer be supported by the updrafts (such as upward moving air) in the clouds and fall to the ground, forming precipitation.

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This type of evolution is known as Microevolution.

Evolution is the descent modification of preexisting species. It is a process species adapt over time. There are two types of evolution: Microevolution and macroevolution.

Microevolution is defined as the changes in the frequency of the gene in the population.  Several factors affect evolution geneflow, including natural selection, mutation, and genetic drift.

Pesticide resistance is one example of macroevolution. Microevolution is frequently seen in visible forms of evolution, such as antibiotic-resistant variable strains.  Microevolution is the change in gene frequency that occur over time. Alleles are different forms of a gene. Allele frequencies are usually represented as a percentage.

This type of evolution is known as Microevolution.

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The scientific definition of evolution refers to changes in a species or population over time.

Evolution is a long-term process. It may take millions of years and several generation for an evolution to occur. The cause of evolution can be genetic as well as environmental. The evolution is a result of mutation. Evolution generally gives rise to new species, that is different from its ancestral population.

Population is a group of similar type of organisms.  These organisms live in the same habitat, require same resources and have same kind of habits. The most essential criteria that defines a population is that the organisms of a population can mate with each other and produce offspring.

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Growth & Development is the not a characteristic that a living thing must follow

Different characteristics of growth and development like intelligence, aptitudes, the body structure, the height, weight, color of the hair and eyes are highly influenced by the heredity. Sex: Sex is a very important factor which actually influences the human growth and the development It can help them learn new skills, to grow their career, and to improve their mental health. Human growth and the development are the important because it also helps them to learn new skills, improve their quality of life, and also improve their mental health. Human growth and the development are important in the continuity of the species.

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During repolarization, calcium channels close and voltage-gated potassium channels open  is the correct answer.

Repolarization is the change in membrane potential that occurs immediately following the depolarization phase of an action potential, which changes the membrane potential to a positive value, and restores it to a negative one. The membrane potential typically recovers to the resting membrane potential during the repolarization phase. Action potentials enter the falling phase as a result of the outflow of potassium (K+) ions. The K+ channel pore's selectivity filter allows the ions to flow through. The open calcium channels pass more calcium ions when the driving force for calcium entry increases during the repolarization of the AP, which causes an increase in calcium influx.

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The complete question is :

All of the following statements regarding the electrical activity of the heart conduction cell are false except?

A : A plateau is prolonged to ensure repolarization.

B : Depolarization of the nodal cells is due to fast voltage-gated calcium channels.

C : The first event is the result of slow voltage-gated sodium channel changing the resting membrane potential to -40 mV.

D : During repolarization, calcium channels close and voltage-gated potassium channels open.

Explanation:

risky behavior and abuse

When two heterozygous plants are crossed, then the offspring will be of two different phenotypes, such as green and albino. Out of the four individuals, three will be green and one will be albino. The phenotypic ratio is 3:1.

A monohybrid cross involves a single character or trait. Example: the colour of a pea plant. In the pea plant, green is dominant over albino. Green colour is represented by G. Albino colour is represented by g.

The homozygous green plant is represented by GG. The heterozygous green plant is represented by Gg . The homozygous albino plant is represented by gg .

When two heterozygous plants (Gg) are crossed, each parent will produce two types of gametes, such as G and g. There will be offspring of the GG, Gg and gg type. Both homozygous (GG) and heterozygous (Gg) plants will be green. The punnett square is explained below 

Hence, there will be two different phenotypes, such as green and albino, from the cross of two heterozygous individuals. The phenotypic ratio is 3:1.

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1. (i) The waterweed will grow best in beaker A (in normal daylight).

(ii) The waterweed in the box changed from dark green to pale yellow.    This happened because the black box blocked the light due to which the waterweed was not able to carry out the process photosynthesis.

2. There were not much plants growing below the surface in the school pond with lots of water lilies in it as the excessive growth of water lilies inhibited the penetration of light in the pond.

3. (i) The waterweed will grow better in beaker E containing pond water and fertilizer.

(ii) Fertilizers contain minerals which help the plants to grow.

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Glycolipids molecule can function as a recognition signal for interactions between animal cells.

Lipids having a carbohydrate connected by a glyosidic bond are known as glycolipids. Their job is to keep the cell membrane stable and make it easier for cells to recognize one another, which is essential for the immune response and for the connections that allow cells to join together to form tissues.

Glycolipids are crucial parts of biological membranes that serve a wide range of purposes. They might function as receptors, be necessary for cell aggregation and dissociation, be in charge of particular cellular interaction, and be involved in signal transduction. This protein does not transport phospholipids; instead, it largely transports various glycosphingolipids and glycerol glycolipids between internal membranes.

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Operant conditioning which encompasses reinforcement and punishment refers to the process and selective effects of consequence on behavior.

Operant conditioning is the process of learning to behave in a way so that rewards can be obtained and at the same time punishments can be avoided. It is used by humans as well as animals.

The main purpose of operant conditioning is to reinforce required behavior by providing a system of reward and removing undesirable behavior by giving punishments.

It can be divided into positive reinforcement, negative reinforcement, positive punishment & negative punishment.

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The two most commonly used antibiotics for therapy against uncomplicated tuberculosis are isoniazid , ethambutol, and pyrazinamide. Mycobacterium tuberculosis is the bacteria that causes tuberculosis (TB). Although the TB germs typically assault the lungs, they can also affect the kidney, spine, and brain.

Not every person who contracts the TB germs gets ill. Mycobacterium tuberculosis is a type of bacteria that causes tuberculosis (TB). When a person with active TB disease in their lungs coughs or sneezes, TB bacteria-containing droplets that are ejected are inhaled by the other person.  Although TB has the potential to be a serious infection, the correct drugs can cure it.

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After suffering a stroke, lulu finds she cannot move her left leg. this would suggest that the stroke damage is in the area of the Left Frontal Lobe.

The frontal lobe is the largest of the four primary lobes of the brain in animals, and it is placed at the front of each cerebral hemisphere (in front of the parietal lobe and the temporal lobe). It is divided from the parietal lobe by a groove between tissues known as the central sulcus and from the temporal lobe by a deeper groove known as the lateral sulcus (Sylvian fissure). The frontal pole, one of the three poles of the cerebrum, is the most anterior rounded section of the frontal lobe (albeit it is not well-defined) .

The management of higher level executive functions as well as voluntary movement and expressive language depend on the frontal lobes. Executive functions are a group of cognitive abilities that include the ability to organise, plan, take the initiative, self-regulate, and control one's actions in order to accomplish a task.

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Tight junctions desmosome attaches cells to each other across intercellular spaces

Not all junctions between cells produce cytoplasmic connections. Instead, tight junctions create a watertight seal between two adjacent animal cells.

A family of cellular structures known as cell junctions (or intercellular bridges) is made up of multiprotein complexes that allow contact or adhesion between adjacent cells or, in animals, between a cell and the extracellular matrix.

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Answer:

yes

Explanation:

Friction slows things down. It causes a opposite force on the book causing the speed to slow and come to a stop.

Peptic ulcer disease (pud) is most likely to affect the mucosa lining of the stomach or duodenum.

Peptic ulcer disease refers to the occurrence of painful ulcers in the protective lining of the stomach of the duodenum. The stomach produces hydrochloric acid independently to digest the food. The mucosa is the protective lining of the stomach that protects it from the harm that may be caused by the HCl.

An excessive amount of HCl in the stomach or eating up of mucus lining by the bacteria can cause ulcers or sores in the stomach or duodenum. This is referred to as peptic ulcer disease. PUD can also be caused due to various other factors like genetic factors, consumption of alcohol, smoking, or excessive use of NSAIDs.

PUD primarily affects the mucosa lining of the stomach. Submucosa lining lies beneath the mucosa lining which can also get affected. Severe cases of PUD can also affect the Muscularis layer of the stomach.

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The answer to the question is gene flow.

Gene flow, sometimes referred to as gene migration, geneflow, and allele flow in population genetics, is the exchange of genetic material between populations. A population can be deemed to be a single effective population if two populations have equal allele frequencies and the rate of gene flow is high enough. It has been demonstrated that all it takes is "one migrant each generation" to stop populations from drifting apart. Depending on how severe the selection pressure is, populations can diverge even when they are exchanging alleles. The exchange of genetic variety between populations is facilitated through gene flow. By altering allele frequencies, migrants affect how genetic variation is distributed among populations.

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(C) 1 million years ago is the approximate time that the species diverge. This is because Genetic analysis at a neutral locus indicates that these species differ by 100 substitutions. If there are 10 substitutions separating species 1 and 2.

Divergence in evolutionary biology refers to an evolutionary process in which a population of an inbreeding species splits into two or more descendant species that have progressively diverged in their morphologies and structural characteristics.

The difference between species 1 and 3 is 100 substitutions, and humans split off 10 million years ago. As a result, there will be 10 substitutions in a million years. As a result, 1 million years ago, species 1 and 2, which are divided by 10 substitution, diverged.

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Question correction:

Imagine that, of three species, it is known that species 1 and 3 were separated 10 million years ago, based on geologic measurements. Genetic analysis at a neutral locus indicates that these species differ by 100 substitutions. If there are 10 substitutions separating species 1 and 2, approximately how long ago did these species diverge?

A. 0.1 million years ago

B. 10 million years ago

C. 1 million years ago

D. 100 million years ago

Answer:

and

Explanation:

Carbon doioxide-gas given off in animal respiration

that is absorbed from the air by plants in

photosynthesis.

Respiration - chemical process of cells doing

work; breathing.

Saprophyte-organism that gets its food from

decaying plants or animals

In terms of fatalities, the most dangerous natural disasters are caused by long term weather patterns that causes droughts.

A drought is a prolonged period of unusually dry weather caused by a lack of rain. A lack of precipitation can cause a number of issues for local communities, such as crop damage and a lack of drinking water.

Drought and certain weather patterns have been linked by geologists. A weather pattern reveals where the temperature of the surface water in the Pacific Ocean rises along the central South American coast. Warmer waters influence storm patterns and are linked to droughts.

When the temperature of the Pacific Ocean's surface water along South America's coast falls. The cooler waters influence storm patterns by causing drier-than-normal conditions. As a result, climate/weather change increases the chances of drought worsening in many parts of the world.

How drought is impacted by climate change?

Warmer temperatures accelerate evaporation, which decreases surface water and dries out the soil and vegetation. Low precipitation periods become drier as a result, as opposed to when it is cooler. Affected areas are becoming drier as a result of climate change's timing changes for water availability.

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Answer:

Prions archea, viroids bacteria, viruses protists are acellular while fungi is cellular.

While viruses have indeed been closely researched for more than a century for infections of people and animals, most viruses, particularly those that infect microorganisms, are still poorly understood. 

Pathogenic RNA molecules are known as viroids. Contagious protein particles are identified as prions. Viruses are larger than that of viroids. Viroids are larger than prions in size.

Molds, wild yeasts, as well as mushrooms are examples of fungi. Numerous fungi are multicellular and also have nuclei in their cells. A protein-encased DNA or RNA core defines viruses being non - cellular organisms. Some scientists disagree with the notion that viruses are living things.

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A promoter that affects only genes that are on the same piece of DNA is referred to as a cis acting promoter.

Deoxyribonucleic acid, a polymer made of two polynucleotide chains that coil around one another to form a double helix, contains the genetic material required for the growth, development, and reproduction of all recognized organisms as well as a number of viruses. Ribonucleic acid (RNA) and DNA are examples of nucleic acids. Along with proteins, lipids, and complex carbohydrates (polysaccharides), nucleic acids are one of the four main categories of macromolecules required for all known forms of life.

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Yohimbine (Pausinystalia yohimbe)

Yohimbine (Pausinystalia yohimbe) is the herb the nurse expects to be used by the patient who reports to obtain an erection.

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Saccharomyces cerevisiae ferments carbohydrates to produce alcohol and carbon dioxide.

Saccharomyces cerevisiae, also known as baker's yeast, is a unicellular fungus under the Phylum Saccharomyces under the Kingdom Fungi. It is used in bread and alcohol production. It is commonly known as yeast. S. cerevisiae produce alcohol and carbon dioxide from carbohydrates through a biochemical process called fermentation.

Fermentation is the process whereby glucose is broken down in an oxygen lacking environment. There are two types of fermentation - alcohol fermentation and lactic acid fermentation. Yeasts like S. cerevisiae make use of alcohol fermentation. The alcohol produced as a result is used in production of alcoholic beverages and the carbon dioxide is used in bread production to proof dough.

Muscle cells can make use of lactic acid fermentation to produce energy in an oxygen lacking environment.

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The statement is false that viewing the shape of a bacterial or archaeal cell using a microscope gives a great deal of information about the metabolism and lifestyle of the organism.

Archaeal cell is the prokaryotic unicellular organism, that live in extreme habitats. These habitats can be thermal hot springs, extreme salty waterbodies or in areas producing methane gas. This is the reason they are also called extremophiles. Examples are: methanogens, halophiles, etc.

Metabolism refers to all the chemical reactions that take place inside an organism's body. Metabolism is made up of two phenomena: anabolism and catabolism. Anabolism is the formation of larger molecules from smaller ones, while catabolism is the breakdown of larger molecules into smaller ones.

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All living things require an outside source of materials and energy. The sum total of all chemical reactions that occur within a cell to provide these materials and energy is called metabolism.

Energy is the ability to perform work.  In an organism's body energy is required to perform each and every processes inside the body. In eukaryotic organisms this energy is derived by the mitochondria. In humans and various other species, the major source of energy is ATP.

Metabolism is the sum total of all the reactions taking place inside the body. These reactions can be anabolic or catabolic. The anabolic reaction involve the formation of larger molecules from the smaller ones. The catabolic reactions involve the breakdown of larger molecules into smaller ones.

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The repressor is a type of regulator protein that binds to a region of DNA in the promoter of a gene called the operator and prevents transcription from taking place.

In the field of science, a regulator protein can be described as a kind of protein that affects the transcription of a gene by having an influence on particular DNA sites. The rate of synthesis of various proteins is controlled by the regulator proteins.

A repressor is a kind of regulator protein that prevents the transcription of a particular gene. When the rate of a protein in the body has reached normal, the transcription of the protein needs to be stopped in order for more protein of that kind to be formed. The repressor binds itself to the operator region for the gene, hence stopping the transcription process until the protein is required again.

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Answer:

A.

Explanation:

Prokaryotic cell is a primitive cell and has limited functions. Thus, nucleus is the correct answer.

Prokaryotes are the oldest inhabitants on the earth. They are single cell structures.

Prokaryotic cells  (karyon = nucleus) are not well equipped with the cellular structures. They lack nucleus and the nuclear membrane. The other membrane bound organelles are also absent in prokaryotes.

Prokaryotes contain cilia or flagella as locomotory organs. Cytoskeleton is absent in prokaryotes.

Prokaryotes can thrive in the extreme conditions. They can respire anaerobically or can even withstand high temperatures.

Bacteria are considered as prokaryotes. Bacteria dominate the earth and are of various types based on their shape, function etc.

The other examples of prokaryotes include blue-green algae and mycoplasma.

Prokaryotes reproduces without the fusion of gametes. It forms spores or employs other methods of somatic reproduction.

Therefore, prokaryotes, though being the oldest are important for the ecosystem.

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Answer:

D.nucleic acid is the ans

Explanation:

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Common task such as examine animals to assess their health and diagnose problems,Treat and dress wounds,Perform surgery on animals,Test for and vaccinate against diseases,Operate medical equipment, such as x-ray machines,Advise animal owners about general care, medical conditions, and treatments,Prescribe medication.

Treat unwell or injured animals through prescribing medication, placing bones, dressing wounds, or acting surgery. Inoculate animals towards numerous sicknesses, inclusive of rabies or distemper. Examine animals to come across and decide the character of sicknesses or injuries.

Medical specialists regularly speak approximately the “Standard of Care,” a hard and fast of recommendations that outline the suitable remedy for a selected fitness problem. The fashionable of care is what facilitates make certain that sufferers obtain a comparable primary stage of care regardless of wherein they are treated

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Answer:A,B,C,E

Explanation:Just did It.

Out of the four chambers, the left ventricle of the human heart is the most muscular and therefore the strongest.

Heart is the organ that circulates blood to the entire body. It is made up of cardiac muscles that regulate its pumping all the time. These are involuntary muscles. The heart has 4 chambers: 2 atriums and 2 ventricles. One side of the heart is involved in the regulation of oxygenated blood while to other side regulates the deoxygenated blood.

The left ventricle of the heart is the major blood pumping chamber. It pumps the oxygenated blood to the complete body. Thus requires very much force and hence this is why it is the most muscular and strongest chamber of the heart.

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