which of the following statements about mitochondria and chloroplasts provides support for the endosymbiotic theory? multiple choice they have only a single membrane surrounding them. they have their own genomes. they contain genes that are vastly different compared to bacterial genes. they cannot synthesize proteins.
Answers
The true statement about mitochondria and chloroplasts that provides support for the endosymbiotic theory is that they have their own genes. Therefore, the correct answer is the second option.
The endosymbiotic theory is a biological theory that suggests that mitochondria and chloroplasts were once free-living bacteria that were engulfed by another cell and began living in a symbiotic relationship. One of the key pieces of evidence for this theory is the fact that both mitochondria and chloroplasts have their own genomes, separate from the genome of the cell they are in. This suggests that they were once independent organisms with their own genetic material.
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Related Questions
what system carries auxin to move to the darker side?
Answers
Vascular system.
Phototropisms are caused by an unequal distribution of auxin. This makes the plant grow either towards or away from the light, depending on which part of the plant receives the light.
In a stem, the cells on the shaded side contain more auxin and grow longer than the cells on the light side. This causes the stem to grow towards the light. It is vital to note that the plant does NOT bend towards the light.
Phototropisms are a result of an unequal distribution of auxin. This makes the plant develop both in the direction of or far from the mild, relying on which part of the plant gets the mild.
In a stem, the cells at the shaded aspect comprise greater auxin and develop longer than the cells at the mild aspect. This reasons the stem to develop in the direction of the mild. It is crucial to be aware that the plant does NOT bend in the direction of the mild.
What are auxins?Auxins are a category of plant hormones (or plant-boom regulators) with a few morphogen-like characteristics. Auxins play a cardinal position in the coordination of many boom and behavioral procedures in plants cycles and are important for plant frame development.
Thus it is clear that the system that carries auxin to move to the darker side is the vascular system.
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Pls someone help it's urgent discuss organic agriculture
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Organic agricultural methods are internationally regulated and legally enforced by many nations, based in large part on the standards set by the International Federation of Organic Agriculture Movements (IFOAM), an international umbrella organization for organic farming organizations established in 1972.[12] Organic agriculture can be defined as "an integrated farming system that strives for sustainability, the enhancement of soil fertility and biological diversity while, with rare exceptions, prohibiting synthetic pesticides, antibiotics, synthetic fertilizers, genetically modified organisms, and growth hormones".[13][14][15][16]
Since 1990, the market for organic food and other products has grown rapidly, reaching $63 billion worldwide in 2012.[17]: 25 This demand has driven a similar increase in organically-managed farmland that grew from 2001 to 2011 at a compounding rate of 8.9% per annum.[18]
As of 2020, approximately 75,000,000 hectares (190,000,000 acres) worldwide were farmed organically, representing approximately 1.6% of total world farmland.[19]
Organic farming can be beneficial on biodiversity and environmental protection at local level. However, because organic farming has lower yields compared to conventional farming, additional agricultural land is needed elsewhere in the world, which means that natural land has to be converted into agricultural land. This can cause loss of biodiversity and negative climate effects that outweigh the local environmental gains achieved.[20][unreliable source?]
In the F2 generation of a dihybrid cross two phenotypes appear in the ratio 1:1. two phenotypes appear in the ratio 3:1. four phenotypes appear in the ratio 12:4. four phenotypes appear in the ratio 9:3:3:1. three phenotypes appear in the ratio 1:2:1.
Answers
Answer:
four phenotypes appear in the ratio 9:3:3:1
Explanation:
For a dihybrid cross in which the two genes concerned obey simple dominant/recessive law and are independently assorting, four phenotypes are produced in the ratio 9:3:3:1.
The dominant gene takes up the largest ratio (9/16) while the recessive gene takes up the smallest (1/16). Any deviation from 9:3:3:1 and the number of phenotypes produced from a dihybrid cross is an indication that the genes involved do not obey Mendelian laws.
removal of the cell wall of a gram positive bacteria results in the formation of a _____.
Answers
Removal of the cell wall of a gram-positive bacteria results in the formation of a protoplast.
Gram-positive bacteria have a thick peptidoglycan layer in their cell wall, which is responsible for retaining the crystal violet stain during the Gram staining procedure.
When the cell wall is enzymatically removed, the bacteria lose their characteristic shape and become spherical. The remaining structure, composed of the plasma membrane and cytoplasm, is referred to as a protoplast.
Protoplasts are fragile and are susceptible to osmotic lysis since they lack the structural support provided by the cell wall. However, they can still perform essential cellular functions such as metabolism and protein synthesis.
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Photosynthesis Virtual Lab
1. Problem Statement or Scientific Question with explanation.
(What do you want to find out by doing this experiment?)
2. Hypothesis: (An educated guess of what you think will happen in this experiment?)
(If ……………then…… because………. )
pls guys i need help like i dont have much time so pls help me there is 8 more quoistion but i will post it whe this is finished so pls help me
Answers
The Photosynthesis Virtual Lab aims to investigate how different light colors affect the rate of photosynthesis in plants.
1. The problem statement or scientific question of the Photosynthesis Virtual Lab is to determine the effects of different light colors on photosynthesis in plants. The experiment aims to investigate how different light colors affect the rate of photosynthesis in plants.
2. Hypothesis: An educated guess of what might happen in the experiment is known as a hypothesis. The hypothesis for the Photosynthesis Virtual Lab is "If plants are exposed to different light colors, then the rate of photosynthesis will be different because different light colors have different wavelengths, and the rate of photosynthesis is influenced by the amount and quality of light."
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__________ are long term cells that produce antibody if an antigen reappears. (answer = 1 word + 1 letter + 1 word)
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Memory B cells are long-term cells that can produce antibodies if an antigen reappears. T
They are a crucial part of the immune system's response to subsequent encounters with previously encountered pathogens or antigens.
B cell memory is generated upon a first pathogen encounter and is carried by two distinct lineages: long-lived plasma cells that secrete protective antibodies for a lifetime and memory B cells that can elicit improved and enhanced responses upon new antigen challenges.
Memory B cells reside in the dermis and can be reactivated locally by antigen. DCs, dendritic cells; ILCs, innate lymphoid cells; iNKT, invariant natural killer T. Both B2 and B1 B cells are found in skin, with the B2 population more prevalent than the B1 cells (42).
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what is a tree doing when it is growing from the energy it receives from the sun?
Answers
Answer:
It's either Primary Growth, or Phototropism, depending on what exactly you're asking.
Explanation:
select all of the anatomical structures that are part of a complete flower. sepals petals carpels stamens leaves sporangia
Answers
Components of a complete flower: sepals, petals, carpels, stamens.
A complete flower typically consists of sepals, which are the outermost protective structures, followed by petals, which are the colorful and attractive parts of the flower. Inside the petals, there are carpels, which are the female reproductive organs, and stamens, which are the male reproductive organs. Together, these components work in harmony to facilitate pollination and fertilization in flowering plants.
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Which function is performed by the ozone layer?
Answers
The Ozone Layer prevents Ultraviolet rays (from the Sun) from reaching Earth.
please vote this answer brainliest if it helped you!
The independent variable of this experiment was the presence of macromolecules, the dependent variable was color change. Thus, test tube # ________ was the control group and was used as the comparison group to our tested experimental groups.
Help^!!
Answers
The independent variable of this experiment was the presence of macromolecules, the dependent variable was color change. Thus, test tube was the control variable and was used as the comparison group to our tested experimental groups.
What are variables?Variables are defined as any characteristics, number or quantity which can be measured . It can also be called as a data item . It is called as variable because they can vary and can have variety of values.
There are three types of variables 1) manipulated variable where in a condition is specified, 2) responding variable which is dependent on manipulated variable 3)controlled variable which do not change.
Example of manipulated variables are number of hours spent by a student studying , that of responding variable is result of a student and temperature is an example of controlled variable.
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what is the sugar in rna
Answers
Answer:
Sugar
Both DNA and RNA are built with a sugar backbone, but whereas the sugar in DNA is called deoxyribose (left in image), the sugar in RNA is called simply ribose (right in image). The ‘deoxy’ prefix denotes that, whilst RNA has two hydroxyl (-OH) groups attached to its carbon backbone, DNA has only one, and has a lone hydrogen atom attached instead. RNA’s extra hydroxyl group proves useful in the process of converting genetic code into mRNAs that can be made into proteins, whilst the deoxyribose sugar gives DNA more stability4.
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The Chemical Structures of Deoxyribose (left) and Ribose (right) Sugars
Explain why a cell is matter (do not search this up please, write from your own words)
Answers
Answer:
Explanation:
A cell is matter because evrything in the universe is made up of matter with cells bing included in evreything in the universe
Conditioned reinforcers are originally __________ stimuli but they acquire reinforcing power after they consistently precede primary reinforcers or other conditioned reinforcers.
Answers
Conditioned reinforcers are originally neutral stimuli.
When conditioned reinforcers consistently come before primary reinforcers or other conditioned reinforcers, they start off as neutral stimuli but end up having reinforcement power.
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Write a complete scientific explanation about what causes the speed at which the dye spreads to differ in water of different temperatures. Use your observations as evidence and make sure to include the relationship between the temperature of the water and the motion of the molecules of water and dye.
Claiming:
Evidence:
Reasoning:
Answers
The speed at which dye spreads in water is influenced by the temperature of the water, where the dye will diffuse faster in warmer water and slower in cooler water.
What is Temperature?
Temperature is a measure of the average kinetic energy of the particles in a substance, such as atoms or molecules. It is a scalar physical quantity that is commonly measured in degrees Celsius (°C) or Fahrenheit (°F) using a thermometer. Temperature is related to the direction of heat flow between two objects or systems that are in thermal contact with each other, with heat always flowing from hotter to cooler objects until thermal equilibrium is achieved.
Temperature affects the motion of the water molecules, where warmer water has molecules with higher kinetic energy and move faster than cooler water molecules. As a result, the dye molecules collide with the water molecules more frequently and with more energy in warmer water, which results in the dye molecules being carried further and more quickly throughout the water.
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EASYYY IM TIRED, IVE BEEN ON 2 REDBULLS TRNA STAY AWAKE DOING HW. I NEED HELP WITH THIS ONE QUESTION SO I CAN GTS!!!!
What would happen if you decreased the amount of light available to the model biosphere?
Answers
Answer:
the Vajpayee is a term that ecompasses all the ecosystem from the Earth it there for increase both non living elements like sunlight and water and leaving organisms
Explanation:
hope it is helpful
Answer:
Explanation:
: There's only one stable, long-lasting biosphere that we know of. It's the Earth. It shouldn't surprise you that human attempts to create sealed systems don't generally fare very well. The International Space Station, despite efforts to recycle everything possible (including converting urine to drinkable water--do you still want to be an astronaut?) to reduce costs, couldn't sustain life for long without a steady supply of provisions from, and garbage hauling back to, Earth. You know they try hard because, if all goes as planned, it costs about $10,000 to put a pound of payload (supplies) into Earth orbit. The BioSphere 2 project in Southern Arizona was an interesting and costly effort, but the original studies weren't very scientific and it proved quite difficult to keep just a handful of humans alive for a relatively short period of time. You can buy tiny sealed marine ecosystems enclosed in glass. They are beautiful curiosities, but the one I bought for my wife lasted less than a year before crashing. Among the crazier justifications for space exploration is that when (note the assumption of inevitability) we ruin the Earth, we will need new places to live (and, presumably, ruin). Unless or until we can do a lot better at building self-contained ecosystems, it would be a far better use of human effort to focus on preserving the only one we've got. Not only that but, if we make the Earth uninhabitable, I'm not sure we deserve to live somewhere else. But the challenge itself is interesting, and the scientific questions you can ask in the process of understanding, building, and trying to maintain such a system are valid. We're going to give it a try. Good luck! There's a Nobel Prize in it.
What is the relationship between
Evolution and adaptation
Answers
The main difference between adaptation and evolution is that the adaptation is the short-term changes of organisms to suit their environment or habitat whereas the evolution is the long-term changes that occur in the genetic level for better functioning and survival.
The invaginations of the mitochondria, which increase the surface area of the inner membrane, are called.
Answers
Answer:
Crista/Cristae
Explanation:
The name is from Latin.It gives the inner membrane it's wrinkled shape which provides huge space for chemical reactions to occur on.
What is the importance of photosynthesis to plants? Check all that apply. Plants must get their energy by eating plants or by eating other animals that eat plants. - Photosynthesis is the process by which plant cells capture the energy of the Sun and convert it to chemical energy, which is then stored as inorg molecules in plants. Plants obtain energy from three major types of foods: carbohydrates, fats, and proteins. Plant cells can also convert these carbohydrate molecules to fat molecules and, with the proper inorganic nutrients, to protein molecules - Photosynthesis is the process by which animal cells capture the energy of the Sun and convert it to chemical energy which is then stored as carbohydrate molecules in plants. Photosynthesis is the process by which plant cells capture the energy of the Sun and convert it to chemical energy, which is then stored as carbohydrate molecules in plants Plants cannot directly use the energy of sunlight. Previous Q Search Secure Search on
Answers
Option D "Photosynthesis is the process by which plant cells capture the energy of the Sun and convert it to chemical energy, which is then stored as carbohydrate molecules in plants" and option E "Plants obtain energy from three major types of foods: carbohydrates, fats, and proteins. Plant cells can also convert these carbohydrate molecules to fat molecules and, with the proper inorganic nutrients, to protein molecules" are the correct answers.
The importance of photosynthesis to plants are as follows:
Photosynthesis is the process by which plant cells capture the energy of the Sun and convert it to chemical energy, which is then stored as carbohydrate molecules in plants.
Plants cannot directly use the energy of sunlight.
Plants obtain energy from three major types of foods: carbohydrates, fats, and proteins.
Plant cells can also convert these carbohydrate molecules to fat molecules and, with the proper inorganic nutrients, to protein molecules.
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why do conditions in the body need to remain constant? give three examples
Answers
Answer: you need to have control over your blood glucos concentration, body temperature, and water levels to maintain homeostasis.
ayuda porfavor es para hoy :(
Answers
Answer:
B
Explanation:
si mi pensamiento es correcto, sería B. porque tienes las masas de las moléculas y esas se quedan con el símbolo periódico para ellas.
Consider the following two statements about succession.
Student 1:
Matthew - As succession begins, communities tend to be dominated by mostly K-selected species. As succession continues, r-selected species tend to compete better and therefore become more and more common.
Student 2:
Iman - As succession begins, communities tend to be dominated by mostly r-selected species. As succession continues, K-selected species tend to compete better and therefore become more and more common.
Which student is correct?
a. Provide a rationale for your answer (2 marks)
b. Provide a specific example of succession which includes at least one example of an r-selected and one example of a K-selected species. (1 mark)
Note - No marks are earned by simply agreeing with either Matthew or Iman
Answers
What is the maximum magnification of most classroom compound light microscopes?
100x?
500x?
1000x?
5000x?
Answers
Answer:
1,000×
Magnification. The actual power or magnification of a compound optical microscope is the product of the powers of the ocular (eyepiece) and the objective lens. The maximum normal magnifications of the ocular and objective are 10× and 100× respectively, giving a final magnification of 1,000×.
Explanation:
Brainliest please?
Explain how the fossil record model shows relative dating of the history of polar bears Explain polar bear fossil record model shows relative dating of the history of polar bears
Answers
By changing its fur from brown in white, the polar bear evolved from original brown bear in it to "fit to its chilly environment. According to recent study globally, emergence species of brown bears is arisen very quickly.
A species is defined by what?A group of living things that can breed with in the wild and give birth to healthy children is known as a biological species.
Which four species categories are there?2. Nominalistic Species Concepts 3. Biology Species Concepts 4. Evolutionary Species Concepts. Typological / Essentialist Species Concept.
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Both chloroplasts and mitochondria use the process of chemiosmosis to produce ATP Which of the followin explains how this mechanism differs in these two structures Chloroplasts require electron carriers to transport high-energy molecules, while mitochondria store them in the mitochondrial matrix camers to transport high-energy molecules Chloroplasts use photosystems as a source of electrons, while mitochondria use water molecules as a source of electrons. In chloroplasts, electrons move through an electron transport chain, while in mitochondria they undergo cyclic electron flow In chloroplasts Ht dituses across the thylakoid membrane, while in mitochondria Ht dittuses across the inner mitochondrial membrane. pplasts Ht amuses across the thyiakoia d membrane, while in mitochondria Ht difmuses across the inner mitochonorial membrane
Answers
Chemiosmosis occurs in mitochondria during cellular respiration and in chloroplasts during photosynthesis.
How do the roles of ubiquinone and cytochrome c differ from the other components of the electron transport?Ubiquinone and cytochrome c are tiny, mobile electron carriers, but the other elements of the electron transport chain are substantial complexes fixed to the inner mitochondrial membrane.
As it transports electrons, the electron transport chain pumps protons from the mitochondrial matrix into the intermembrane space, creating the chemiosmotic gradient.
The last electron acceptor in this electron transport cycle is oxygen, which creates water as a result (H20). ATP is also created concurrently by the electron transport chain. This is the reason the procedure is known as oxidative phosphorylation.
In mitochondria during cellular respiration and in chloroplasts during photosynthesis, chemiosmosis takes place. Both of these operations produce ATP.
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What group of modern countries are located in the land of Mesopotamia?
Ecuador, Peru, and Chile
Vietnam, Laos, and Cambodia
Iran, Iraq, Jordan, Israel, Lebanon, and Syria
Honduras, Belize, Costa Rica, and Panama
Answers
Answer:
3rd group
Explanation:
Question 14 (2 points) The process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called natural selection. O mutation. genetic drift. migration.
Answers
The process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called a mutation.
A mutation is a sudden and lasting alteration in the DNA sequence that can influence genetic variation. Changes in the DNA sequence can influence phenotype, which may or may not have an effect on an organism's fitness. Mutations occur spontaneously, either from errors in DNA replication or from exposure to mutagenic agents. Mutations may happen in either coding or non-coding regions of the DNA, and they can be either silent or expressed.
Evolution is a natural process that results in the gradual change of inherited characteristics in populations over generations. It is the process of alteration in the inherited characteristics of species over successive generations. In other words, it is the process of gradual changes that happen to species over time as they adapt to their environments. It can be defined as a change in the gene frequency in a population over time.
Types of Evolution 1. Natural Selection 2. Genetic Drift 3. Gene Flow 4. Mutation 5. Non-Random Mating 6. Admixture 7. Mutation Pressure 8. Genetic Draft 9. Bottleneck and Founder Effect 10. Sexual Selection the process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called a mutation.
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Two short-tailed cats are bred together. They produce three kittens with long tails, five short tails, and two without any tails. a. From these results, how is tail length in these cats inherited? b. Write out the genotypes paired with the matching phenotypes for the offspring to support your answer.
Answers
Answer:
a) Cats show incomplete dominance which means the kitten can be born with full length tails, short length tails and without tails.
b) The genotype of the parent will be heterozygous (Tt ) and the kittens will be:
Genotype | Fenotype
-TT | (long tail)
-Tt | (short tail)
-tt | (no tail).
When does upward growth of cities typically occur?.
Answers
Upward growth of cities typically occurs when there is a shortage of available land for horizontal expansion.
When cities become densely populated and demand for housing and commercial space increases, there may be limited land available for traditional horizontal expansion. In these cases, the only option for cities is to build upwards through high-rise buildings and skyscrapers. This can also occur when there are zoning restrictions or other regulations that limit horizontal growth.
In summary, upward growth of cities typically occurs when there is a shortage of available land for horizontal expansion, and can be a result of population density, demand for space, and zoning restrictions.
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in birds and mammals, a vestige of the sinus venosus of the fish heart remains as the sinoatrial node, which serves as a(n) group of answer choices baroreceptor. site of erythropoiesis. inhibitory node. diastole detector. pacemaker. previousnext
Answers
In birds and mammals, the sinoatrial node is a small cluster of specialized cells located in the right atrium of the heart. It is often referred to as the "pacemaker" of the heart because it generates electrical signals. Pacemaker is right answer.
The vestige of the sinus venosus of the fish heart refers to the evolutionary remnants of the fish heart structure that can still be found in birds and mammals in the form of the SA node. The SA node acts as the primary natural pacemaker of the heart, initiating the electrical impulses that regulate the rhythm and rate of the heartbeat. These impulses spread throughout the heart and coordinate the contraction and relaxation of the atria and ventricles, ensuring an efficient and coordinated pumping action of the heart. Other options listed, such as baroreceptor, site of erythropoiesis, inhibitory node, and diastole detector, are not accurate descriptions of the SA node or its function in the heart.
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Sea water measures 5000 ml is allowed to evaporate how many parts of dissolved minerals will produce? the average salinity of ocean is 35 ppt
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To determine how many parts of dissolved minerals will be produced when 5000 ml of seawater evaporates, we need to calculate the amount of dissolved minerals in that volume. When 5000 ml of seawater evaporates, it will produce 175 parts per thousand (ppt) of dissolved minerals.
The average salinity of the ocean is 35 parts per thousand (ppt), which means that for every 1000 grams of seawater, there are 35 grams of dissolved minerals. To determine how many parts of dissolved minerals will be produced when 5000 ml of seawater evaporates, we need to calculate the amount of dissolved minerals in that volume.
Since 1 ml of seawater is equivalent to 1 gram, we have 5000 grams of seawater. To find the amount of dissolved minerals, we multiply the mass of seawater (5000 grams) by the salinity (35 ppt):
Dissolved minerals = 5000 grams * 35 ppt = 175,000 parts of dissolved minerals.
Therefore, when 5000 ml of seawater evaporates, it will produce 175 parts per thousand (ppt) of dissolved minerals.
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