Answer:
RNA (referred to as a ribozyme)
Explanation:
What is a
theory?
A. a scientific
explanation for a set of
observations that can
be tested
B. a proven, universal
truth that states what
happens
C. a well-tested
explanation as to why
something occurs that
is generally accepted
D. an assumption
made about an
experiment
Answer:
A. A scientific explanation for a set of observations that can be tested.
Explanation:
Theories can be proven or rejected, just like hypotheses.
Hope this helps!
Your answer is A. a scientific
explanation for a set of
observations that can
be tested
An individual suffers a blood clot in an artery that delivers blood to his leg. The leg begins to take on a blue hue, becomes colder than the rest of his body and he experiences numbness in the leg. He is most likely experiencing.
Two starts are visible from Earth ,Star A “appears” brighter than shad B , but their luminosity ( absolute magnitude ) is the same .
Why does star A appear brighter than B ?
Why is less atp obtained from the average carbon in a sugar molecule than from a carbon in a fat molecule?.
Answer:
Why is less ATP obtained from the average carbon in a sugar molecule than from carbon in a fat molecule? The correct answer is not given. The sugar carbons require more water weight during cellular storage. The carbons in fatty acids are a more oxidized form of carbon than those in sugars.
A specialist who treats the genitourinary system of males is a/an.
How does the shape of a protein relate to its function? Refer to specific details about this case and sickle cell anemia.
Answer: A protein's specific shape determines its function.
Explanation: If the three-dimensional structure of the protein is altered because of a change in the structure of the amino acids, the protein becomes denatured and does not perform its function as expected.
Which of the following does water pollution affect: surface water, ground Water, or ocean water?
Answer:
Pollution affects surface water, groundwater, and ocean water
Explanation:
Pollution of surface water can cause degradation of ground-water quality and conversely pollution of ground water can degrade surface water. Thus, effective land and water management requires a clear understanding of the linkages between ground water and surface water as it applies to any given hydrologic setting.
Bellwork: of the locations of earthquakes over the past 10 years were plotted on a world map, which of the following would be observed?
A. Earthquakes occur with the same frequency everywhere on Earth.
B. Earthquakes generally occur along the edges of tectonic plates.
C. Earthquakes most frequently occur near the middle of continents.
D. Earthquakes do not seem to occur in any consistent pattern.
Answer: B.
Explanation:
It's not A, because earthquakes happen at different magnitudes depending on how the plates shift beneath them.
It's not C, because tectonic plates are scattered among the earth.
It's not D, since the pattern of earthquakes are dependent on the shifts of tectonic plates.
It's B because tectonic plates are the reason earthquakes happen. Everytime they shift or move, an earthquake occurs. There may be some earthquakes that are not near tectonic plates but the majority are, which is why the question uses the word "generally occur."
Hope this helped ♡
which are false ;-;
Answer:
an organisms phenotype is only made up of genes, the last bottom one
Explanation:
What prevents the blood in veins from flowing in the wrong direction?.
Answer:
The heart valves
Explanation:
The heart valves prevent blood from flowing in the wrong direction in the heart. The valves are held in the proper place because of the chordae tendinae.
What is the basic structure of a virus?
DNA or RNA surrounded by a cell wall.
O A capsid surrounded by a protein coat.
A capsid surrounded by an envelope.
DNA or RNA surrounded by a cell membrane
Answer: A capsid surrounded by an envelope.
Explanation:
There are 3 differences between the two kingdoms of bacteria. Which of the
following is NOT one of those differences?
What the cell wall is made of.
How they reproduce.
DNA differences
Habitats.
Answer:
the DNA differences should be the answer
Why have scientist devised a system of comparative weights for atoms rather than using actual weights
Answer:
Because of multiple reasons:
Explanation:
Atoms are way too small to weigh.They couldn't use weight, they would have to use mass.Some atoms are free-floating, because they are the air.If they even made a scale that measured each atom, it would also catch the air atoms as well, unless they had a vacuum chamber, but even then, no one can make a perfect vacuum, space is not even a perfect vacuum...Hope this helps.
What causes movement of water through xylem
Imagine that this cleared area was made for a farm that grows only one type of crop. What kinds of outcomes might you predict for this new area of low biodiversity?
A forest with a large spot that was cut down.
A forest with a large spot that was cut down will represent a loss of biodiversity that might be irreversible.
What is biodiversity?Biodiversity refers to all genetic and phenotypic diversity that is present in a given ecosystem.
Biodiversity is fundamental for maintaining the internal equilibrium (homeostasis) of the whole ecosystem.
The generation of a short patch in the forest may represent the loss of biodiversity that may be reestablished by the surrounding environment.
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Clostridium tetani is a bacterium that can be found in soil.
It causes the infection tetanus.
Chrildren are vaccinated against tetanus.
Explain why these children do not get tetanus if the bacteria enters their body through a cut in the skin.
Explanation:
because vaccine injected to them produces antibodies which fight against the bacteria
Both plant and animal cells as well as many unicellular organisms contain
Answer:
Both plant and animal cells as well as many unicellular organisms, contain a mitochondria and nucleus which supply energy for a cell .
Explanation:
Cell is the basic functional and structural unit of life. Plant, animal as well as many unicellular organisms contain cell organelles and mitochondria which supply energy to cells.
What are different cell organelles?Cell organelles are the structures inside a cell that floats inside the cytoplasm.
Any cell that is living has cell organelles.
Cell organelles are as follows:
Mitochondria: form ATP and provides energy to the cell.Nucleus: Brain of the cell.Ribosome: helps in protein synthesis.Endoplasmic reticulum: It helps in the transport of substances.Golgi bodies: involves in packaging.Lysosome: involved in digestion of cell.Thus, Both plant and animal cells as well as many unicellular organisms contain organelles and mitochondria that provides energy to the cell.
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A global mind-set is an increasingly valued _________ trait.
Answer:
task-oriented
Explanation:
A global mind-set is an increasingly valued task-oriented trait.
Answer:
A global mindset is an increasingly valued task-oriented trait.
Explanation:
A global mentality is a task-oriented attribute that is becoming more appreciated. All characteristics are either positive or bad, and excellent leaders should have only positive characteristics. The implications of leadership traits cannot be ignored.
During which phase of meiosis do the sister chromatids line up across from each other in the center of the cell?.
Answer:
Metaphase
Explanation:
During metaphase, each of the 46 chromosomes line up along the center of the cell at the metaphase plate.
hope this helps
pls mark brainliest
Canopus is 313 light years from Earth. How old is the light that we are currently seeing?
Answer:
313 years old because ye4s im smart a enginner i know how to spoll cause i ahave all as
Explanation:
if the bars are held close to one another, why will the hanging bar move toward the held bar
Answer:
Bar 2 is made of rubber and has been rubbed with fur. If the bars are held close to one another, why will the hanging bar move toward the held bar? The bars have opposite charges. Both bars have an increase in negatively-charged particles.
write the difference between
a.Soil formation and Soil erosion
b.Soil pollution and Soil profile
a.
In soil erosion, the soil is carried away from by the wind or water from the top layer of the ground. Soil formation is making soil. It can be by the deposition of the soil from water or wind
The boy is pushing a box with force 30 N. How much force is the box pushing back with and why
Answer:
30N
Explanation:
Newton's third law states that when you apply a force onto something, it gives the same force in an equal but opposite direction.
Photosynthesis ceases when leaves wilt, mainly because:.
Photosynthesis ceases when leaves wilt, mainly because stomata close, preventing CO2 from entering the leaf.
What is photosynthesis?Photosynthesis is a series of chemical reactions by which plants can produce simple carbohydrates in presence of light.
Photosynthesis requires carbon dioxide and light to produce glucose and release oxygen.
In plants, the interchange of carbon dioxide and oxygen during photosynthesis occurs in specialized structures called stomata.
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Which statement regarding viral diseases is false? AIDS was around for decades before becoming a widespread epidemic. Very few new human diseases have originated in other animals because the genetic differences are too great. RNA viruses tend to have an unusually high rate of mutation because their RNA genomes cannot be corrected by proofreading. New viral diseases often emerge when a virus infects a new host species.
The statement 'very few new human diseases have originated in other animals because the genetic differences are too great' regarding viral diseases is false.
What is a viral disease?A viral disease is an infection caused by a virus that may be spread to cause pandemic and epidemic situations.
Viruses are non-living forms and/or entities that are present in a suitable host to reproduce and survive.
In many situations, viruses mutate in order to pass from a type of host (animal) to a human host.
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The network of nerves that regulate digestive motility, secretion, and blood flow is called the __________ system.
15. What is atherosclerosis?
A. the build up of fats and cholesterol in the walls of blood vessels
B. the field in which scientists investigate how many people have a disease
C. a method used to correct arrhythmias
D. another word for high blood pressure
Atherosclerosis refers to the build-up of fats and cholesterol in the walls of blood vessels (Option A).
What is atherosclerosis?Atherosclerosis is a disease characterized by the build-up of fats and cholesterol in the walls of blood vessels.
This build-up of fats narrows the blood vessels, thereby difficulting the movement of blood in the bloodstream.
The symptoms of atherosclerosis include, among others, chest pain, shortness of breath and fatigue.
Learn more about atherosclerosis here:
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Answer:
I hope this helps.
Explanation:
________ is/are one of the main causes of evolution.
Mutations
Darwin
Niches
An acquired trait
Answer:
mutations
hope this helps
3.) Is the trait shown recessive or dominant?
Answer:
top two are recessive if not shaded
Explanation:
bottom one is dominant male
What are the horticultural advantages of producing plants by cuttings rather than from seeds? Can you think of any disadvantages?
Answer:
Propagating a plant by cuttings will allow you to keep the special characteristics of that plant. Plants grown from seed will often be different from the parent plant and from each other. Propagating a new plant via cuttings avoids the difficulties of propagating by seed.