Answer:
All of the following are examples of the evidence that supports the endosymbiotic theory EXCEPT for option C. Mitochondria and chloroplasts have linear chromosomes.
Explanation:
The endosymbiotic theory essentially states that some organules of the eukaryotic cells, such as mitochondria and chloroplasts, were once free-living bacteria. Probably, these organisms must have been phagocytosed, but not digested by another cell. On the contrary, these bacteria were able to adapt to their host so that the two cells established a dependent relationship with each other.
Due to its similarities to other free-living bacteria, it is speculated that chloroplasts must derive from cyanobacteria and that mitochondria must derive from rickettsias.
This theory is supported by a few characteristics of the chloroplasts and mitochondria that suggest they were once a free cell. For example,
Both organelles present their own genetic material. This DNI is bi-catenary and circular, identical to the bacterial DNA, and very different from the eukaryotic cell´s DNA. These organelles divide by binary fission (not by mitosis) and can synthesize their own ribosomes and organelles. Both organelles present a double membrane, a characteristic that reinforces the idea of being phagocyted. The internal membrane looks identical to the bacterial membrane, while the external membrane looks like the eukaryotic one. The sizes of the organelles are similar to the size of some procaryotes.
Photosynthesis
in chemical equation
Answer:chemical equation for photosynthesis is-------------------------------------------6CO2 + 12H2O ----> C6H12O6 + 6H2O + 6O2❤❤❤❤❤❤
Witch of the following is a common natural indoor air pollutant?
A. VOCs from furniture
B. Lead from paints
C. Radon
D. Insulation
Answer:nitrogen oxide
Explanation:
why good packing is necessary for fruit and vegetable
Answer:
Given the fact that all fruits and vegetables are highly perishable crops, choosing the right fruit and vegetable package can be vital for farmer's survival on the market. The main function of a package is to maintain fruits and vegetables, in a way that will preserve their quality and extend storage life.
What are sunspots? storms on Earth’s surface storms on the Sun’s surface hot gases on the Sun holes in the Sun
Answer:
B STORMS ON THE SUNS SURFACE !!
Explanation:
GOT IT RIGHT ON EDG 2021 !!
Sunspots are storms on the Earth's surface.
WHAT ARE SUNSPOTS?Sunspots are darker and cooler areas on the surface of the sun in a region called the photosphere.
Sunspots form on the surface of the sun due to strong magnetic field coming up from the sun core.
Sunspots appear visibly as dark spots compared to their surroundings. Therefore, sunspots are storms on the Earth's surface.
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what is the molar mass of the chemical (NH4)2SO4?
Answer:
hi find the attachment
Explanation:
i hope this help
About biology fund nutrition
Cytochrome C structure Cytochrome C is a protein found in all species, and functions in energy metabolism. The more closely related two different species are,
A. ances the greater the number of accumulated mutations will have occurred in their cytochrome C molecules.
B. the greater the differences in oxygen utilization in energy metabolism the more like their cytochrome Camino acid sequences are.
C. the greater the number of differences there are in their amino acid sequences in cytochrome C.
Answer:
Cytochrome C is a protein found in all species, and functions in energy metabolism. The more closely related two different species are,
C. the greater the number of differences there are in their amino acid sequences in cytochrome C.
Explanation:
Cytochrome c, unlike other cytochromes, is highly water-soluble. It is an essential component of the electron transport chain, where it transfers electrons between complex III and complex IV of the respiratory chain. It undergoes oxidation and reduction when its iron atom converts between the ferrous forms to the ferric forms, but it does not bind to oxygen.
If humans cannot see ultraviolet waves, how can ultraviolet light be used to gather evidence of a crime? Ultraviolet light detects the presence of radioactive substances. Ultraviolet light shows cold areas as blue and warm areas as red. Ultraviolet light causes substances to fluoresce and give off visible light. Ultraviolet light transmits information to AM and FM radio receivers.
UV light can be used to gather evidence of a crime because Ultraviolet light causes substances to fluoresce and give off visible light.
What is Ultraviolet Light?Ultraviolet light refers to one of the components of the electromagnetic spectrum between visible light and X-ray.
Visible light is the only electromagnetic wave that can be seen by humans, hence, UV radiation cannot be seen by humans but can be used to detect crimes.
Ultraviolet light causes substances to fluoresce and hence, give off visible light that can then be seen by humans.
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First off, radioactive materials that may have been utilised to commit a crime are frequently found using ultraviolet light. For instance, radioactive materials may have been used in a bombing to cause the explosion.
What is the region for radioactive substances ?Even though they are invisible to the eye, these radioactive substances can be found using ultraviolet light. This can assist detectives in proving a crime was committed and locating the offenders. Second, you may use ultraviolet light to spot cool and warm spots at a crime scene.
Warm zones will show as red and cold areas as blue. This can help identify if a weapon was used or whether a fire was ignited. Additionally, it can It can also be employed to locate bodies or trace a bullet's course.
Finally, compounds that fluoresce and emit visible light when exposed to UV radiation can be found using this technology. This may be used to find biological evidence, including blood, semen, and other substances.
Additionally, it can be used to find chemical substances that might have been involved in criminal activity. Finally, ultraviolet light is a potent tool for obtaining criminal evidence. It can make things glow and emit visible light, reveal cold and warm zones, and detect radioactive materials. All of these characteristics can aid investigators in establishing the existence of a crime and locating the offenders.
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EXplain the causes of genetic erosion
Answer:
One of the main causes of genetic erosion is the replacement of local varieties by modern varieties. Other causes include environmental degradation, urbanization and land clearing through deforestation and bush fires.
Leukemia is a type of cancer found in the blood and bone marrow which is caused by the rapid production of abnormal white blood cells. Your white blood cells are important to your immune system as they are responsible for engulfing and destroying foreign bodies such as bacteria or dead cells. People with leukemia are prone to getting other diseases very easily, as their white blood cells do not work properly. What organelle could be damaged in the white blood cells to make them abnormal?
Answer:
lysosomes
Explanation:
disease causing organisms (bacteria) is engulfed by process phagocytosis
which of the following describes a hot spot?
Answer:
its for wifi
Explanation:
If a runner was preparing for a long distance race should he eat carbohydrates proteins or lipids explain your answer completely using evidence from the video
Answer:carbohydrates
Explanation: They provide fast energy.
Codons can be found in...
A.humans only B.rocks C.bacteria D.all
Answer:
A series of codons in part of a messenger RNA (mRNA) molecule. Each codon consists of three nucleotides, usually corresponding to a single amino acid. The nucleotides are abbreviated with the letters A, U, G and C.
Explanation:
Answer and I will give you brainiliest
Answer:
1st one is pituitary gland
2nd one is thyroid gland
3rd one is pancreas
4th one is adrenal gland.
Question 8(Multiple Choice Worth 4 points) (02.02 LC) Which of these serves as a reference for comparison during a scientific investigation? Outcome variable (dependent variable) Test variable (independent variable) Control group Hypothesis
Answer:
The independent variable
Explanation:
Can abnormal behavior cause internal distress not seen by others?
Answer:
Under this definition, a person's thinking or behavior is classified as abnormal if it violates the (unwritten) rules about what is expected or acceptable behavior in a particular social group. Their behavior may be incomprehensible to others or make others feel threatened or uncomfortable.
Explanation:
Answer:
yes
Explanation:
how is the DNA in a prokaryote different from the DNA in a eukaryote
Answer:
Eukaryotes consist of membrane bound nucleus whereas prokaryotes lack a membranebound nucleus. Prokaryotic DNA is doublestranded and circular. ... The main difference between prokaryotic and eukaryotic DNA is that prokaryotic DNA is found in the cytoplasm whereas eukaryotic DNA is packed into the nucleus of the cell.
How is the inside of your ear like the inside of your nose?
A. Both regions are associated with balance and motion
B. Neither region is associated with sensory perception
C. Both regions contain tiny sensory hair cells
D. Neither region sends signals to the brain
which instruments can be used for measuring weight
Answer:
beam balance,mass scales, weight scales
what are causes of genetic erosion?
Explanation:
One of the main causes of genetic erosion is the replacement of local varieties by modern varieties. Other causes include environmental degradation, urbanization and land clearing through deforestation and bush fires.
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Sedimentary rocks form because of all of the following EXCEPT ____. a. sediments becoming pressed or cemented together b. crystals solidifying from magma c. sediments forming from solution d. water evaporating, leaving crystals behind
Answer:
a
Explanation:
Individuals of the same species that live in the same species that live in the same area_________
A-Ecosystem
B-organism
C-Ecology
D-species
E-abiotic
F-Biotic
G-community
H-population
Individuals of the same species that live in the same area is a population
The illustration shows one of the ways resources are removed from the deep sea. Describe what type of resources these are, including if they are renewable or non-renewable. Predict two consequences to the seafloor life if this process is not regulated.
Answer:
Marine mining is a process that can be done by dredging the seabed and is used for the extraction of mineral resources from the seabed, which are non-renewable, with a negative impact on marine ecosystems.
Explanation:
The illustration shows a process of marine mining by dredging, where the resource extracted is of a mineral nature, like copper, zinc, silver and gold. Gravel used for construction can also be extracted from the sea. Mineral resources extracted from the sea are not renewable.
The process of marine mining can be harmful to the ecosystems there, so it must be a process that requires control and management from the ecological point of view.
Two possible consequences of not regulating marine mining are:
Destruction of the habitat of life forms present on the sea floor, which endangers many species and even forces migration to more stable areas, with consequences on the food chains. Extinction of marine species that inhabit the seabed. The flora and fauna of the sea floor usually have slow reproductive cycles and, in the case of fish, spawning takes place on the bottom of the sea. Mining endangers the reproductive cycles of the species, leading to induced extinction.Responsible and controlled mining activity can be useful for humans, while avoiding negative consequences on the ecosystems that exist at the seabed.
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Answer:
Newton's second law: force and acceleration are proportional, mass and acceleration are… The acceleration of an object as produced by a n is directly proportional to the magnitude of the n in the same direction as the net force, and invers proportional to the mass of the object.
Explanation:
are human nails exoskeleton
Answer:
no, the nails are not an exoskeleton
Explanation:
Humans don't have an exoskeleton. Invertebrates have an exoskeleton and vertebrates have an endoskeleton.
Hence, the nails are not exoskeleton, the nails are derivates of the skin. We don't need our nails to survive, but they do support the tips of our fingers and toes, protect them from injury, and help us pick up small objects
Tissue that lies beneath the epidermis and makes up thr majority of the plant is
Answer:
Explanation:
I think its the hypodermis
which organelle would be very abundant in pallisade cell
What must be true of the concentration of potassium and sodium inside the neuron?
Answer: The sodium/potassium (Na+/K+) pump introduces two potassium ions that were outside and expels three sodium ions that were inside the neuron. After that, the sodium ions cannot re-enter the neuron, because the membrane is not permeable to it. This means 3 positive charges are lost every time the pump works and this makes that in the outside there are more positive loads that in the interior, creating a difference of potential. When the nervous impulse reaches a neuron in a state of rest, the membrane is depolarized, and this opens the channels for sodium, thereby the polarity is inverted. At the end, the neuron must return to the initial rest potential and the membrane is repolarized, closing the channels for sodium.
Explanation:
A neuron is a type of cell found in the central nervous system that is able to receive, process, decode and send information in the form of electrical or chemical signals through the process of synapses. This allows the transmition of information to other cells in the form of nerve impulses, which translates into "instructions" for the rest of the organism. So during the synapse, this process can be of two types:
Chemical synapse: neurons release and receive neurotransmitters, which are small molecules that carry information.Electrical synapse: it is faster and bidirectional, characterized by the transmission of ions between neurons through protein connections, called gap joints or cleft joints, without the intervention of a neurotransmitter.The information between neurons is transmitted by changes in the polarity of the cell membranes, due to the presence of neurotransmitters that alter this ionic concentration inside the cell. So they are responsible for depolarizing the membrane of the neuron that receives the nerve impulse, opening the channels for sodium that remained closed before. The difference in ion concentration produces a difference in the potential between the exterior of the membrane and the interior of the cell, and it is achieved by the action of the sodium/potassium (Na+/K+) pump which introduces two potassium ions that were outside and expels three sodium ions that were inside the neuron. After that, the sodium ions cannot re-enter the neuron, because the membrane is not permeable to it. This means 3 positive charges are lost every time the pump works and this makes that in the outside there are more positive loads that in the interior, creating a difference of potential. It is said that the neuron is in rest potential, ready to receive a nervous impulse.
When the nervous impulse reaches a neuron which is in a state of rest, its membrane is depolarized, and this opens the channels for sodium, thereby the polarity is inverted. After this, the interior of the neuron reaches an electropositive value, with respect to the exterior. Initally, the value is about -70 millivolts (negative the interior with respect to the outside). When there is a change of potential of 120 millivolts more than the interior, the action potential has been reached and there is a transmission of the nervous impulse to the next neuron.
At the end, the neuron must return to the initial rest potential and the membrane is repolarized, closing the channels for sodium. Enzymes destroy neurotransmitters and the rest potential is reached when the sodium is expelled by the Na+/K+ pump.
Which factor determines the direction most molecules will
pass through the cell membrane?
Answer:
the ribosomes
Explanation:
theyy control what goes in and out of the cell and protect it from certain doom
1. Which is denser?
O solid
Oliquid
O gas
None of these are dense.