What process do scientists think explains the evolution of mitochondria and chloroplasts from bacteria
Answers
Scientists put their conclusions into this by creating th Endosymbiotic theory. The endosymbiotic theory describes how mitochondria and chloroplasts (cell organelles) came to exist in eukaryotic organisms. The endosymbiotic theory explains the evolution of mitochondria and chloroplasts. Before mitochondria and chloroplasts were organelles in a cell, they were free prokaryotic cells that were absorbed by eukaryotic cells.
The mitochondrion was originally a prokaryotic cell that could undergo aerobic respiration. After being absorbed by a eukaryotic cell, it developed a symbiotic relationship with its host cell.
The chloroplast was originally a prokaryotic cell that could undergo photosynthesis (eg. cyanobacteria). Like the mitochondria, the photosynthesizing bacteria became dependent on the host cell after being engulfed.
There is much evidence to support the endosymbiotic theory.
Both prokaryotes and chloroplasts/mitochondria have circular DNABoth have their own ribosomesBoth divide through binary fission (splitting into two)Both have their own cell membranes
Related Questions
Explain why identifying genes in bacterial genomes is less complex than identifying genes in the human genome.
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than bacteria
Marnee goes to the doctor because she has been coughing and sneezing. The doctor explains that a pathogen entered her cells and started replicating, which caused her to get sick. What was the cause of Marnee’s sickness?
A) bacteria
B) fungi
C) protists
D) virus
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Which phrase describes air pressure?
Answers
Answer:
psi, or pounds square inch
can Someone help before I leave the class
Answers
The answer for this question is D
2.In the model below what is most likely the reason for placing the farmland upstream from the factories?
Answers
Answer:
It is easier to send the raw materials to the factories to become finished goods.
Explanation:
I don't know if this was multiple choice, but you would put the farmland upstream from the factories so that the crops and other raw materials could easily go down to the factories to be finished. I hope this helped :)
What are two important factors in the ability of argentine ants to displace native ants?.
Answers
Answer:
Numerical and behavioural dominance enabled Argentine ants to displace these ants in just 20 min; the abundance of native species at baits declined 3.5–24 fold in direct relation to the rapid increase in L. humile.
Explanation:
Frog lungs are poorly developed. How does this relate to their skin.
Answers
Answer:
Frogs breathe (and expel mucus) through their skin.
Who discovered tetrapod fossils in Greenland
Answers
Answer:
It was discovered by Jennifer Clack
To determine the density of a rabbit population, one would need to know the number of rabbits and __________.
Answers
To determine the density of a rabbit population, one would need to know the number of rabbits and the size of the area in which they live.
(HERE IS THE ANSWER)
Which of the following are effectors in this reflex
arc? Check all that apply
* nerve ending in nasal passage
nose
Like other reflexes, sneezing involves a reflex arc,
Sneezing is triggered when the nerve endings in
the nasal passage are irritated by something like
dust or an unusual smell. Nerves carry these
impulses to the sneezing center in the brain stem
The sneezing center sends instructions to the
facial nerves that lead to the lungs and
diaphragm. The eyes water, the nasal passages
secrete fluid, and the diaphragm moves abruptly,
causing a deep breath. Then, a contraction in the
chest muscles cause air to quickly leave the nose
and mouth
X brain stem
lungs
diaphragm
eyes
Answers
Answer:
In this reflex arc, the
✔ nerve endings in nasal passage
is/are the receptor(s).
In this reflex arc, the
✔ sneezing center in brain stem
is the interneuron
Explanation:
e2020
Answer:
nose
lungs
diaphragm
eyes
Explanation:
The primary function of cellular respiration is to ________. A) determine the amount of heat needed by the human body B) provide the body with adequate amounts of vitamins and minerals C) efficiently monitor the energy needs of the body D) break down food molecules and generate ATP
Answers
The primary function of cellular respiration is to break down food molecules and generate ATP.
What is cellular respiration?Cellular respiration is the process by which living organisms obtain energy in form of ATP by breaking down food molecules in their cells.
Cellular respiration occurs in all living organisms because energy is required for their daily metabolic activities.
Therefore, the primary function of cellular respiration is to break down food molecules and generate ATP.
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which classification groups have linear chromosomeswhich classification groups have linear chromosomes
Answers
Until recently, prokaryotes did not contain linear plasmids or chromosomes, but they have since been discovered in spirochaetes, Gram-positive bacteria, and Gram-negative bacteria. Bacterial linear DNA has been classified into two structural kinds. Each end of linear plasmids from the spirochaete Borrelia has a covalently closed hairpin loop, while each end of linear plasmids from the Gram-positive filamentous Streptomyces has a covalently connected protein. In eukaryotic cells, replicons with comparable structures are more common than in prokaryotes. However, linear genomic architectures are likely more widespread in bacteria than previously thought, and some replicons may be able to switch between circular and linear isomers. The molecular biology of these widely scattered pieces reveals information about the origins of linear DNA in bacteria, including evidence of prokaryote-eukaryotes genetic exchange.
it pumps blood allowing the distribution of nutrients to all parts of the body
Answers
It pumps blood allowing the distribution of nutrients to all parts of the body
HEART
noun
The heart is the organ in circulatory system that pumps blood throughout the body by the help of the atriums and ventricles that supply oxygen, nutrients to the body and take out deoxygenated blood away to the lungs.
ATRIUMS AND VENTRICLESThe right atrium is the upper chamber of the heart that receives deoxygenated blood from the vena cava and pumps it into the right ventricle which sends the blood out to the lungs so that it become oxygenated.
Left ventricle the thickest of all the heart's chambers is responsible for the pumping of oxygenated blood to tissues all throughout the body.
What kind of cells in the human eye perceive color?.
Answers
Answer:
Cone cells help detect colors.
Explanation:
Light travels into the eye to the retina located on the back of the eye. The retina is covered with millions of light sensitive cells called rods and cones. When these cells detect light, they send signals to the brain. Cone cells help detect colors.
Where in an organism will mitosis take place
Answers
This is the correct sequence of events of the cardiac cycle.
Answers
Given what we know we can confirm that the correct sequence of events for the cardiac cycle is atrial systole, ventricular systole, atrial diastole and ventricular diastole.
What is the cardiac cycle?The cardiac cycle is what we define as the cycle in which the heart beats. This cycle begins with the systole of both the atria and the ventricles, in which they contract, first the atria, then the ventricle. This is to pump blood into the next part of the circulatory tract. This is followed by the diastole of each cavity, in which they fill with blood once more.
Therefore, we can confirm that the correct sequence of events for the cardiac cycle is atrial systole, ventricular systole, atrial diastole, and ventricular diastole.
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The correct sequence of events of the cardiac cycle is :
Ventricular filling ---> isovolumetric contraction ---> ventricular ejection --> isovolumetric relaxation
Meaning of cardiac cycleCardiac cycle is a measure of the heart performance start form a single beat to the beginning of the next heartbeat. it occurs in four phases which starts with the Ventricular filling phase and ends with the isovolumetric relaxation.
Hence we can conclude that the correct sequence of events of cardiac cycle is as listed above.
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Killer whales
Sea lions
Salmon
Baleen whales
Herring
Zooplankton
Phytoplankton
Which of the following are missing from the food web shown above?
F Producers
G Decomposers
H Omnivores
Predators
Answers
Answer: Decomposers
Explanation:
100 POINTS 100 POINTS Has anyone ever done this worksheet or know what to do? please send me answers. if you dont know dont respond. if you know only a few answers, then you can answer
Answers
6. How did natural selection work in the red-eye frog egg hatching?
7. What was the explanation regarding the phenotypic plasticity of the red-eye frog eggs?
Answers
We can confirm that natural selection resulted in the coloration of the red-eye frog due to its higher chance of survival with this change in pigment.
Why would this color help the frog survive?Bright pigments are a common defense mechanism in nature. Organisms that are poisonous often evolve bright coloration as a warning to predators. Over time, natural selection ensures that the organisms who've successfully incorporated this pigmentation have much higher survival rates and therefore the species entirely evolves into possessing this trait, as was the case with the red-eye frog.
Therefore, we can confirm that natural selection resulted in the bright pigmentation of the red-eye frog because of the much higher survival rate that this adaptation afforded the organism.
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Please help me! Major grade. Tysm!!
Answers
Answer:
C. Individuals with thicker fur had a survival advantage in the cold, allowing these individuals to reproduce moe often and create more offspring.
Explanation:
Natural selection means the process of changing the adapting the new environment. Based on the given data one can conclude that the individual with thicker fur had a survival advantage in the cold environment.
Why natural selection occurs?
Natural selection takes place due to 3 underlying reasons:
Reproduction
Heredity
Variation in fitness of organisms.
Due to these reasons, natural selection can leads to speciation.
As the individual are living in cold environment, they need to adapt the change in environment. So, individuals with thicker fur had a survival advantage in the cold environment, allowing these individuals to reproduce more often and create more offsprings.
Thus, option C is correct.
The smaller cell produced by oogenesis meiosis i, called the first polar body, is essentially a packet of discarded nuclear material.
Answers
The statement "The smaller cell produced by oogenesis meiosis is called the first polar body, is essentially a packet of discarded nuclear material.". is a true statement. This is further explained below.
What is oogenesis?Generally, Oogenesis is a process that takes place in the ovary's outermost layer, where the initial meiotic division commences in a primary oocyte.
In conclusion, oogenesis meiosis is essentially a packet of discarded nuclear material.
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No fake answers and no links. Why do astronomers rely on different types of telescopes?
Answers
Answer:
Because different telescopes are used to study and observe different types of objects in space.
Explanation:
They need many different types of telescopes to look at space because each telescope shows them different things. Light comes in wavelengths from short to long. Even though all light is fundamentally the same thing, the way that astronomers observe light depends on the portion of the spectrum they wish to study. And it also depends on the telescope itself.
What is Ocean Exploration and Why is it Important?
Despite the fact that the ocean plays a role in everything from the air we breathe to daily weather and climate patterns, we know very little about our ocean. And, most of our knowledge of the ocean lis in shallower waters. Deeper waters remain a mystery even though we are relying more and more on these areas for food, energy, and other resources. Enter ocean exploration...wna t a k 0 to ppl
Answers
Answer:
We collect data and information needed to address both current and emerging science and management needs. Exploration helps to ensure that ocean resources are not just managed, but managed in a sustainable ways. ;)
And if this was a question Hope This Helped
And Crtss Why Man Just Why Lol
Answer:
scientist explore the ocean to leanr about sea life
Explanation:
soooooooooooo........................
how so different biogeographical zones affect agricultural practice?
Answers
Answer:
Biodiversity within a given ecosystem will be affected by a number of biogeographic factors: Larger habitats tend to promote biodiversity better than smaller habitats (more available niches = less competition) Ecology at the edges of ecosystems is different from central areas (e.g. more sunlight, more wind,
hope it helps
6) In the illustration, choose the letter of the diagram that best represents anaphase. Α) В) C) D)
Answers
Answer:
Illustration D shows the phase of anaphase
Transfusing mismatched blood types is a problem for a patient because A. it slows down digestion. B. it changes blood composition. C. it causes infection. D. it causes clots in blood vessels.
Answers
Answer:
D. it causes clots in blood vessels.
Explanation:
If you receive blood that is not compatible with your blood, your body produces antibodies to destroy the donor's blood cells. This process causes the transfusion reaction. Blood that you receive in a transfusion must be compatible with your own blood.
Increasing levels of greenhouse gases have caused a:.
Answers
When did the largest mass extinction in history occur?.
Answers
Answer:
Approximately about 250 million years ago
Explanation:
The doctor advised Jim to take antibiotics for five days to treat a bacterial infection. After three days, Jim started feeling better, so he stopped taking the pills. A week later, Jim again showed symptoms of a bacterial infection.
What reason could explain the reappearance of the symptoms?
Answers
The bacteria was not killed off. In those three days symptoms had stop because the bacteria was dormant. They must have been activated because Jim provided a suitable environment for their growth
The eastern indigo snake often makes its home in abandoned gopher tortoise burrows. How would you characterize this relationship and its effect on each member
Answers
The relationship between the eastern indigo snake and gopher tortoise is commensalism. It is a type of +/0 interaction where one species is benefitted while the other is neither benefitted nor harmed.
What do you mean by Species interaction?Species interaction may be defined as the population of one species interacting with the population of other species that live in the same locality for the purposes of various needs.
In this given example, the eastern indigo snake benefitted as it lives on the territory or locality of the abandoned gopher tortoise, while the gopher tortoise is neither benefitted nor harmed.
Therefore, the relationship between the eastern indigo snake and gopher tortoise is commensalism.
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