Niles Eldredge and Stephen Jay Gould argue that evolution is characterized by long periods of relative stability that are punctuated by sudden changes. The correct option is B.
Thus, the punctuated equilibrium hypothesis, put out by Niles Eldredge and Stephen Jay Gould, contends that evolution is characterized by protracted periods of relative stability, or stasis, interspersed with comparatively brief intervals of rapid change.
They proposed that species frequently experience stasis, or prolonged periods of little to no morphological change, and punctuation, or sudden change. The conventional idea of ongoing, steady change through time, as advocated by Charles Darwin, is challenged by this viewpoint.
Thus, the ideal selection is option B.
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.............. are also microscopic but are different from other microorganisms
Explanation:
it can be multicellular microorganisms because it is different form microorganisms pls mark as brainlist
What is the reason food molecules aren’t in Hydroponic plant food
Answer:
stem cellls?
Explanation:
Water and hydroponic plant food do not have food molecules inside them according to food labels and food indicator experimental results.
DNA ___________ is important because it ensures that when a cell divides, the two resulting cells have the same genetic code. Pleaseee help
Answer: Replication
Explanation: When the cell is preparing to divide it will replicate its DNA so that both of the daughter cells will have a complete set of the DNA. It's like a book of instructions and the cell has to perfectly replicate it so that when it splits into two both of the new cells will have a perfectly made copy of it! Hope this helps :)
30 POINTS!!
Scientists must use microscopes to study the cells of living things. Explain why microscopes are necessary to study cells. Then, describe some things microscopes have helped scientists discover about cells
A cell is the smallest unit of life. Most cells are so small that they cannot be viewed with the naked eye. Therefore, scientists must use microscopes to study cells. Electron microscopes provide higher magnification, higher resolution, and more detail than light microscopes
Answer:
A cell is the smallest unit of life. Most cells are so small that they cannot be viewed. Therefore, scientists must use microscopes to study cells. Electron microscopes provide higher magnification, higher resolution, and more detail than light microscopes.
Explanation:
PREDICT: investigation 1 1. If antibiotic particles are released into the simulation, will they have the same chance of destroying all those variations of bacteria when they reach them? Justify your answer... Can you please help me.
Before bacteria to multiply, their cell size must increase. Bacteria increase as the simulation progresses because they are in a fertile habitat.
How do antibiotics interact with bacteria?Antibiotics destroy critical bacterial cell structures or functions. This either kills the organism or prevents it from developing. Based on these findings, an antibiotic is characterized as either bactericidal or bacteriostatic.
Antibiotic use has been linked to an increase in inheritable mechanisms such mutation, recombination, gene transfer, and prophage production 112-121. These changes must, of course, be fixed for evolution to be relevant, and fixation can only occur when bacteria are selected for.
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which action must take place before transcription can begin?
Before transcription can begin, a process known as DNA unwinding and unzipping must take place.
Transcription is the process by which genetic information encoded in DNA is copied into a complementary RNA molecule. However, before transcription can occur, the DNA double helix must undergo unwinding and unzipping.
During DNA unwinding, the hydrogen bonds between the complementary nucleotide bases (adenine, thymine, cytosine, and guanine) are broken, causing the DNA double helix to separate into two strands. This separation exposes the DNA template strand, which serves as a template for RNA synthesis.
Once the DNA strands are unwound, the process of DNA unzipping occurs. Enzymes, such as helicase, help in separating the DNA strands by breaking the hydrogen bonds between the base pairs.
As a result, the DNA molecule is "unzipped" into two separate strands, with the template strand serving as a template for RNA synthesis.
After DNA unwinding and unzipping, the stage is set for transcription to begin. The RNA polymerase enzyme can then bind to the DNA template strand and initiate the synthesis of an RNA molecule using complementary RNA nucleotides.
Thus, DNA unwinding and unzipping are essential steps that precede the initiation of transcription.
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The following methods: budding, binary fission, regeneration, and cloning are all ___ reproduction.
A. meiosis
B. Mitosis
C. Variation
Answer:
Your answer is B) Mitosis.
lipoproteins that are primarily sent to skeletal muscles and adipose tissues are called
Lipoproteins primarily sent to skeletal muscles and adipose tissues are called Very Low-Density Lipoproteins (VLDL).
Lipoproteins that are primarily sent to skeletal muscles and adipose tissues are called low-density lipoproteins (LDL). LDL is often referred to as "bad cholesterol" because if levels become too high, it can increase the risk of developing cardiovascular disease.
LDL particles are smaller and denser than other lipoproteins, and they can easily penetrate the arterial wall and build up as plaque, leading to atherosclerosis. It is recommended that individuals maintain their LDL levels below 130 mg/dL, although an ideal level is below 100 mg/dL. This can be achieved through lifestyle modifications such as a healthy diet, regular exercise, and medication if necessary. In summary, the long answer to your question is that lipoproteins sent to skeletal muscles and adipose tissues are called LDL, and high levels of LDL can increase the risk of cardiovascular disease.
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3 poi
List the three types of heterotrophs in alphabetical order. Use commas.
Please do not use capital letters. Spelling counts.
Answer:
holozoic , saprophytic , parasitic
The bacterial flagellum has three components. In order from the cytoplasm to the external environment, they are ______.
The bacterial flagellum is an organelle that is involved in locomotion in bacteria. The three components of the bacterial flagellum, in order from the cytoplasm to the external environment, are the basal body, the hook, and the filament.
The basal body, located in the cytoplasmic membrane, anchors the flagellum to the bacterial cell's cell wall. The basal body consists of a series of rings that run through the cytoplasmic membrane and cell wall and connect to the hook.The hook is a short, curved structure that links the basal body to the filament, which extends into the external environment. The hook, filament, and basal body of the bacterial flagellum are all composed of protein subunits.
The flagellum rotates, enabling the bacterium to move through the surrounding medium or swim towards food or away from harmful chemicals. It is important to note that bacterial flagella are not to be confused with eukaryotic flagella, which are more complex structures composed of microtubules. Eukaryotic flagella are much larger than bacterial flagella and are enclosed in a cell membrane extension.
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HELP PLEASE!!!!!
Compare a virus to a unicellular organism. (1 point)
O Viruses need energy, unicellular organisms do not need energy.
O Unicellular organisms have a cell membrane made from a lipid bilayer, viruses have a protein coat
O Viruses reproduce through asexual reproduction; unicellular organisms need a host cell,
O Neither unicellular organisms nor viruses respond to stimuli.
Answer:
differences : Viruses need energy while unicellular organisms donot need energy
Unicellular organism has cell membrane but virus has protein coat.
Unicellular organisms have a cell membrane that is made from a lipid bilayer whereas viruses have a protein coat which is called capsid. Unicellular organisms reproduce through asexual reproduction whereas virus need a host cell for their survival because virus use the cell engine to extract food for their survival so it is conclude that unicellular organisms have cell membrane but virus has protein coat.
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The sea otter acts as a keystone species in the kelp (giant seaweed) forests of the ocean in the Pacific Northwest. Sea otters feed on sea urchins, which in turn feed on kelp. Crabs, snails, and geese also depend on kelp for food, and many types of fish use the kelp to hide from predators. Sea otter populations are declining in some areas because of increased predation by orca whales. What effect will the decline in sea otters likely have on the kelp community
Hello~
The decline of otters with cause in increases in the population of sea kelp!
Ary~
Which solution contains the most of electrolytes dissolved per unit of volume? A. Sea water B. Tap water C. Blood plasma D. River water
Out of the given options, the solution that contains the most electrolytes dissolved per unit of volume is C. Blood plasma.
Blood plasma is the liquid component of blood and comprises about 55% of total blood volume. It contains a variety of electrolytes such as sodium, potassium, calcium, magnesium, chloride, bicarbonate, and phosphate ions.
The concentration of electrolytes in blood plasma is carefully regulated by the body, as they play a vital role in many physiological processes such as maintaining fluid balance, regulating pH, transmitting nerve impulses, and contracting muscles.
In comparison, sea water contains a high concentration of sodium and chloride ions, but relatively low levels of other electrolytes. Tap water and river water, on the other hand, contain very low levels of electrolytes and may not be considered as a significant source of electrolytes for the body.
Therefore, blood plasma is the solution that contains the highest concentration of electrolytes per unit of volume and is crucial for maintaining overall bodily functions. It is important to maintain a proper balance of electrolytes in the body to prevent electrolyte imbalances, which can cause various health issues such as muscle cramps, weakness, and even seizures.
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Which of the following are true of the urinary system? (Select Multiple) The renal pelvis is responsible for filtering blood The dense irregular connective tissue that surrounds the kidneys is the renal capsule The distal convoluted tubule directly connects to the ureters Ureters transport urine from the kidneys to the urinary bladder. The kidneys help to regulate blood pressure
The following statements are true of the urinary system: Option D. Ureters transport urine from the kidneys to the urinary bladder. Ureters are tubes that transport urine from the kidneys to the urinary bladder .
The urinary system is a collection of organs that work together to produce, transport, and expel urine from the body. Here are the multiple-choice options, followed by the correct answers:
Option A: The renal pelvis is responsible for filtering blood - FALSE. The renal pelvis is responsible for collecting urine and transporting it to the ureters.
Option B: The dense irregular connective tissue that surrounds the kidneys is the renal capsule - TRUE. The renal capsule covers the kidneys and provides support.
Option C: The distal convoluted tubule directly connects to the ureters - FALSE. The distal convoluted tubule is part of the nephron and empties into the collecting duct, which then connects to the renal pelvis and ureters.
Option D: Ureters transport urine from the kidneys to the urinary bladder - TRUE. The ureters are tubes that connect the kidneys to the bladder and transport urine.
Option E: The kidneys help to regulate blood pressure - TRUE. The kidneys are responsible for filtering blood and removing waste products, but they also play a role in regulating blood pressure and fluid balance. They do this by producing hormones that help control blood pressure and by adjusting the amount of water and electrolytes that are excreted in urine.
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a researcher wanted to create a loss of function mutation for studying type i diabetes in a model animal. what mutation might mimic the effects of type i diabetes?
A loss-of-function mutation is a genetic mutation that makes a gene product less effective or entirely ineffective. In order to analyze the pathological mechanisms underlying type 1 diabetes, scientists have attempted to develop disease models utilizing mutant mice that harbor spontaneous and targeted gene mutations.
A loss-of-function mutation is a genetic mutation that makes a gene product less effective or entirely ineffective. In order to analyze the pathological mechanisms underlying type 1 diabetes, scientists have attempted to develop disease models utilizing mutant mice that harbor spontaneous and targeted gene mutations. The best mutant mice are those that exhibit diabetes, and these mice have been critical to gaining a better understanding of the molecular mechanisms underlying the disease.
To mimic the effects of type 1 diabetes, researchers would likely create a loss-of-function mutation in a gene that is critical for insulin synthesis or insulin release. Insulin is a hormone that regulates blood sugar levels, and people with type 1 diabetes have insufficient insulin production due to the destruction of the insulin-producing beta cells of the pancreas. Mutations in genes such as insulin, glucagon, and somatostatin, which are critical for the regulation of blood sugar, are frequently used to generate diabetic mouse models.
In summary, a loss-of-function mutation in a gene critical for insulin synthesis or insulin release would likely mimic the effects of type 1 diabetes. The exact gene and the nature of the mutation will vary based on the particular research objectives.
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What is a example of density of solid compared to liquid
Answer:
density of lead vs density of water
Explanation:
Explanation:
solid Is and object holder but liquid is something you can see and touch but not hold
Compare and contrast transcription and translation.
Answer:
Transcription is the synthesis of RNA from a DNA template where the code in the DNA is converted into a complementary RNA code. Translation is the synthesis of a protein from an mRNA template where the code in the mRNA is converted into an amino acid sequence in a protein.
At which point does a mutation exert its potentially dysfunctional effects in a cell?.
The mutation exert its potentially dysfunctional effects after the protein is produced.
What is mutation?A mutation is a change in the DNA sequence of an organism.. Mutations can be brought on by errors in DNA replication during cell division, exposure to mutagens, or viral infection. Somatic mutations (which happen in body cells) cannot be passed on to offspring, whereas germ line mutations (which happen in eggs and sperm) can.
What happens if a mistake is made during DNA replication in a cell that is otherwise healthy?
The individual's offspring will inherit the mutation.
Nothing; errors just occur.
The cell will start to divide uncontrollably and develop into a cancerous tumor.
When a cell cycle checkpoint notices a mistake, the cell cycle is stopped to allow the error to be fixed.
DNA replication never contains any errors.
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when would you expect the low-pressure cell over greenland to be most developed?
The low-pressure cell over Greenland, known as the Greenlandic Low, is most developed during the winter months in the Northern Hemisphere. This is because the temperature contrast between the relatively warmer ocean waters and the colder landmass of Greenland is greatest during this time.
During winter, the landmass of Greenland experiences intense cooling, leading to the formation of a cold air mass over the region. At the same time, the surrounding Atlantic Ocean retains some of its warmth from the preceding summer. This stark temperature contrast between the cold land and the relatively warmer ocean creates a strong pressure gradient, resulting in the intensification of the low-pressure cell over Greenland. The Greenlandic Low is known for its role in influencing weather patterns, including the steering of storm tracks and the advection of cold air masses over the North Atlantic region. It plays a significant role in shaping the climate of the region, particularly during the winter season.
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Hello?? Can anyone help me??! PLEASE
Answer:
The temperature is staying the same. In the graph when it shows solid/liquid and liquid/gas, the temperature stays the same until it changes. This is because it reached it's melting point/vaporizing point. For example, a solid gets heated up, it then reaches it's melting point but it can't go higher than that because it isn't fully a liquid yet, once it's a liquid it will then continue to rise in temperature.
I don't think I put enough detail into that explanation but I hope this helps your problem.
Which of the following is NOT part of the nitrogen cycle?
PLEASE HELP
Explanation:
where is the question can you make it neat question it is clear is this achoose question but there is no a,b
alveoli walls are compsed of two types of cells the cells that form the respiratry membrane are ___ cells
Answer:
The cells that form the respiratory membrane in the walls of alveoli are called "pneumocytes" or "alveolar epithelial cells".
The cells that form the respiratory membrane in the alveoli walls are called Type I alveolar cells, or simply Type I cells.
These cells are extremely thin and flat, allowing for efficient gas exchange between the lungs and the bloodstream. Type I cells make up the majority of the alveolar surface area and are responsible for the bulk of gas exchange in the lungs.
They are in direct contact with the capillaries, which allows oxygen to diffuse across the respiratory membrane and into the bloodstream while carbon dioxide diffuses in the opposite direction.
Type II alveolar cells, on the other hand, secrete surfactant, a substance that helps to reduce the surface tension of the alveolar fluid and prevent the collapse of the alveoli during exhalation.
While Type II cells do not directly participate in gas exchange, their function is crucial to maintaining the structural integrity of the alveoli and preventing respiratory distress syndrome in premature infants.
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What are precautions that may help prevent serious inflammation of the bladder?
Precautions that may help prevent serious inflammation of the bladder is to drink plenty of water. This helps flush out bacteria that can cause infection.
Personal cleanliness and hygiene should be maintained in order to prevent the spread of germs and bacteria, which can lead to bladder inflammation. Avoid Intoxication: Smoking and alcohol consumption should be avoided. Excessive drinking of alcohol can cause dehydration, leading to bladder inflammation and urinary tract infections. Smoking causes the bladder to contract more often, leading to inflammation. Drink Lots of Water: Drinking plenty of water can help flush out bacteria and prevent bladder infections. In order to stay hydrated, it is important to drink at least 8-10 glasses of water a day. Avoid Holding Urine: Urinating as soon as you feel the need to go can help prevent bladder inflammation. Holding in urine for extended periods of time can lead to the growth of bacteria and bladder inflammation.
Additionally, good hygiene practices, such as cleaning the genital area before and after sex, can also help. To reduce irritation to the bladder, it's best to avoid certain foods and beverages such as coffee, alcohol, spicy foods, and carbonated drinks. Lastly, it's important to empty your bladder completely after you urinate and avoid holding your urine for extended periods of time.
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What is the force of a 3kg skateboard accelerating at a rate if 4m/s²? Plug the numbers into the formula
Answer:
\(\boxed {\boxed {\sf 12 \ Newtons }}\)
Explanation:
Force is the product of mass and acceleration.
\(F=ma\)
The mass is 3 kilograms and the acceleration is 4 meters per square second.
\(m= 3 \ kg \\a= 4 \ m/s^2\)
Substitute the values into the formula.
\(F= 3 \ kg * 4 \ m/s^2\)
Multiply.
\(F= 12 \ kg*m/s^2\)
1 kilogram meter per square second is equal to 1 Newton. Our answer of 12 kg*m/s² is equal to 12 N\(F= 12 \ N\)
The force of the skateboard is 12 Newtons.
This jet streams are south what kind of weather do we get
Answer:
The south gets warm air.
Explanation:
The Earth splits into hemispheres, therefore, the north gets cold and the south gets warm weather. The southern hemisphere is closer to the equator.
(GIVING BRAINLIEST!!!!!)
Answer: last one
Explanation: the 1st screenshot is sleet 2nd is hail and you can see how big the hail is
A man catches a disease. The man has not been immunised against this disease. A doctor gives the man a course of antibiotics. Figure 2 shows how the live number of live disease in the body changes when the man is taking the antibiotics. Four days after starting the course of antibiotics the man feels well again. It is important that the man does not stop taking the antibiotics .Explain why
Answer: To kill the bacteria causing the illness
Explanation:
When a person takes antibiotics, the bacteria causing diseases will be severely hampered in its operations which will lead to the symptoms of the disease reducing. The bacteria will not die until the drug is taken as prescribed which is why the full dosage must be taken.
If it is not, the bacteria can regain strength and start causing sickness again except this time, it may grow an immunity to the antibiotics which means that an even stronger dosage of antibiotics will be needed.
Which of these best describe a common impact of adolescent pregnancy?
Answer:
Disruption of education for the mother
Explanation:
because it’s the most likely option. Realistically speaking, it’s much more likely for a teenage mother to receive the opposite effects mentioned in the other options.
Select the correct answer from each drop-down menu.
Arya is writing a research paper about physicist Milutin Milankovitch. Help Arya complete the following paragraph of her essay.
First dropdown: tilt, length, rotational path.
Second dropdown: the same in both of the hemispheres, more extreme and hotter, milder and cooler.
Third dropdown: wobble, length, speed.
The Obliquity, Eccentricity and Precession of the earth deals with the orbit of the earth and it's effects on seasonal changes on the earth.
What is Obliquity, Eccentricity and Precession of the earth?Obliquity is the angle the Earth's axis of rotation is tilted as it travels around the Sun.
Eccentricity refers to the shape of the Earth's orbit around the Sun.
If e = 0 the seasonal changes on the earth will be milder and cooler.
Precession is the direction the Earth's axis of rotation is pointed.
Therefore, the Obliquity, Eccentricity and Precession of the earth deals with the orbit of the earth and it's effects on seasonal changes on the earth.
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Answer:
Tilt, milder and cooler, wobble
Explanation:
Milutin Milankovitch was an astrophysicist who was famous for his revolutionizing theories that helped us better understand our climate. He explained how the concepts of obliquity, eccentricity, and precession affect the amount of heat Earth receives. Milankovitch also explained how this heat affects the climate on Earth. The term obliquity refers the TILT of Earth’s axis. Eccentricity (e) describes how circular Earth’s orbit is. If e = 0, the seasonal changes on Earth would be MILDER AND COOLER. Precession explains the WOBBLE of Earth’s axis as it traces an imaginary circle, which affects Earth’s solstices over time.
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most of the energy used to make atp during aerobic respiration is conserved by the activity of:___
It's oxidative phosphorylation, so that is the right response. Three motes of ATP are created when one brace of electrons are transferred to oxygen, according to a 1951 discovery.
The primary medium by which the substantial quantities of energy in food are saved and made available to the cell is oxidative phosphorylation.
Organic material is broken down during aerobic respiration in the presence of oxygen. It happens in the cell's cytoplasm and mitochondria.
The first stage of aerobic respiration is glycolysis, which results in the net conflation of eight motes of ATP, followed by the link response, which transforms the pyruvic acid that results from glycolysis into acetyl CoA.
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