Vestigial structures are remnants of organs that were necessary in our ancestors but no longer have a significant function, such as the human appendix. They may become smaller over generations as unnecessary traits are not maintained, and larger unused structures could be detrimental to an organism's fitness.
Structures that have reduced in size because they no longer serve an important function are called vestigial structures. These structures, such as the human tailbone or the appendix, are tiny remnants of once larger organs that were necessary to our distant ancestors for certain functions.
For example, the appendix was needed to digest food, but in modern humans, it serves no significant purpose. Vestigial structures may shrink in size because any traits that do not enhance an organism's fitness are not maintained across generations. Maintaining a full-sized, unused structure can reduce an organism's fitness by requiring extra energy to grow and maintain the structure, and by increasing the risk of potential maladies.
Which is referred to as the "walking larva" of the blowfly? 1.first instar 2. second instar 3. third instar 4. pupa
Answer
1.First Instar
Explanation
In biology of insects, there are 1-7 instars. The first instar is quite mobile and has long legs with which to disperse. At this stage, it explores cracks, and depressions in the soil in search of an egg pod. After the first instar, the larva moves little because the legs become smaller and smaller.
You are not required to wear a helmet while operating a motorcycle if you can show proof that you are covered by an insurance policy that provides at least ———— in medical benefits
Answer:
at least $10,000 in medical benefits
Explanation:
The helmet is equipment for drivers and passengers of motorcycles and the like that, when used correctly, minimizes the effects caused by impact on the user's head in the event of an accident. Those who do not wear the helmet, in addition to putting their lives at risk, commits a very serious infraction and can be fined, because wearing the helmet is not only mandatory for people who have an insurance policy that provides at least $ 10,000 in medical benefits.
What drives the ATP synthase reactions that produce ATP?
Hydrogen ions flow down a concentration gradient from the thylakoid space to the stroma through ATP synthase, releasing energy that can be used to produce ATP from ADP + Pi.
Explanation:As the phosphate is the essential constituent in the structure of nucleotide that performs the function as molecular currency or intracellular energy transfer. In this compound, the number of phosphates considers the potential of energy, to transfer within the cells. By donating the phosphate groups, this compound adopts the configuration of its lower compound as from ATP to ADP or AMP. To renew the lower compounds to its original state (ATP) the motion of H-ions and phosphate compound requires. In the photosynthesis, by splitting of water, the H-ions release in thylakoid chamber/ With the ATP synthesis machinery on thylakoid membrane, these H-ions move from thylakoid chamber to stroma to provide energy to ATP synthesis machinery. This machinery then uses provided energy to combine the phosphate group to ADP or AMP to convert them into ATP.
With GPS, a single satellite can be used to calculate latitude and longitude. Please select the best answer from the choices provided T F
The answer is false your welcome
What substance joins proteoglycans together into gigantic complexes called proteoglycan aggregates? these complexes can occupy very large volumes. hyaluronidase hyaluronic acid proteoglycase fibronectin?
Answer;
Hyaluronic acid
Hyaluronic acid are the substances that joins proteoglycan together into gigantic complexes called proteoglycan aggregates.
Explanation;
Proteoglycan aggregates are the major structural components of the extracellular matrix of the cartilage, comosed of aggrecan, hyalutonana and a link protein.
They provide cartilage with gel-like property and resistance to deformation through water absorption.
Which brain region would be least involved in visual imagery encoding?
Between 3000 and 6000 meters below the ocean surface, over 50% of the earths surface is covered by what formations
Answer:
Abyssal plain
Explanation:
Between 4000 to 6000 meters below the ocean, the abyssal zone exists which is salty (saltiness between 34.6 to 35 parts per thousand) and cold (temperature between 0 to 4 degree celcius)
Abyssal plain consists of uneven surface of oceanic crust covered by fine grain sediments such as clay and silt. They have major reserve of deep ocean biodiversity.
Which psychotherapy technique utilizes the patient's earliest experience and unconscious influences?
PLEASE HELPPPPP I WILL GIVE BRAINIEST
#1 During which of the following processes would carbon most likely be required?
Breaking of rocks
Generation of electricity
Making of glucose
Running of cars
#2 The balanced equation for photosynthesis is shown below.
6 CO2 + 6 H2O → C6H12O6 + 6 O2
Which statement best justifies the conservation of mass during photosynthesis?
The total number of carbon atoms on both sides is 6.
The total number of hydrogen atoms on both sides is 18.
The number of oxygen atoms is equal to the number of carbon atoms on each side.
The number of oxygen atoms is equal to the number of hydrogen atoms on each side.
#3 Which of the following is an example of how science can solve social problems?
It can stop excessive rain from occurring.
It can identify the sources of polluted water.
It can control the time and day when cyclones happen.
It can reduce the frequency of severe weather conditions.
#4 What happens to the amount of energy that is used up during photosynthesis?
It changes to an equal amount of chemical energy.
It changes to a lesser amount of chemical energy.
It changes to a higher amount of solar energy.
It changes to an equal amount of solar energy.
#5 Which of the following is true about the glucose molecule during the process of cellular respiration?
It forms oxygen.
It builds muscles.
It forms mitochondria.
It helps release energy.
Answer:
Making of glucose
Explanation:
Am I early? Anyway, Glucose is made by CO2, H2O, and energy.
Hope this helps!
Read each statement and decide if it is a fact (can be proven with evidence) or an opinion (personal belief).
Answer: it already answered it for you
Explanation:
Stanley Miller was able to synthesize _____. esters amino acids alcohols aldehydes
Evelyn bean, 52 years of age, is admitted to the same-day surgery unit for an elective laparoscopic cholecystectomy. the patient presents with jaundice of the skin and sclera. the patient's urine is dark and the patient stated that she has clay-colored stools. he stated she has occasional colicky pain in her right upper quadrant of her abdomen radiating to her back. the patient had pre admission testing 1 week ago and the results are on the patient's chart. the record of patient education and an informed written consent are also on the chart. (learning objective 2 and 3)
a. what additional procedure will be performed if the common bile duct is obstructed by a gallstone
What soil type would be BEST for planting a productive garden
In three sentences or fewer, explain the difference between using geothermal energy to generate electricity and using the geothermal gradient to heat your home with an underground heat pump.
Tapping of geothermal energy to produce electricity is done on a larger scale compared to the tapping of the geothermal gradient using a geothermal heat pump. Harnessing geothermal energy is also reliant on geological conditions such as in the area of convection boundaries while geothermal gradient can be harnessed virtually anywhere on the earth surface.
Final answer:
Using geothermal energy for electricity involves tapping into geothermal activity, like hot springs near the Earth's surface, while geothermal heat pumps use the stable underground temperatures to efficiently heat or cool homes.
Explanation:
The key difference between using geothermal energy to generate electricity and using the geothermal gradient for heating with an underground heat pump lies in the method and location of heat extraction. Geothermal power plants require specific geothermal activity near the Earth's surface, such as hot springs or volcanoes, to produce electricity. In contrast, geothermal heat pumps use the constant temperatures found 20 feet below the surface to heat or cool homes efficiently, capitalizing on the subsurface as a heat source in winter or a heat sink in summer, and thus conserving energy that would otherwise be used for conventional heating or cooling systems.
A species displaying which of the survivorship curves is likely to produce the most offspring?
Which of the following statements about estuaries are true?
A. They are the gateway to freshwater breeding grounds of some marine animals
B. They are the breeding grounds for many types of aquatic animals
C. Estuaries are resistant to pollution because the constant inflow of freshwater flushes the pollutants out into the ocean.
D. They are areas where freshwater streams or rivers merge with the sea
Estuaries are located where rivers meet the sea. Estuaries are home to diverse plant and animal groups that have adapted to brackish water. Therefore, option A, B and D are correct.
What are estuaries?Estuaries and the wetlands that surround them are types of bodies of water that may typically be found near the point where rivers meet the ocean. Brackish water is a mixture of fresh water that drains from the land and salty water from the ocean. Estuaries are home to a wide variety of plant and animal populations that have adapted to brackish water.
Seagrass, mangroves, saltmarsh, macroalgae, and microalgae are the most common types of plant communities that may be found in our estuaries. Plants that are able to survive in estuaries are able to withstand a wide range of environmental stresses, including shifts in salt or water level, rainfall, currents, and current direction.
Learn more about estuaries, here:
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what will most likely happen to a plant that does not receive enough sunlight
A. the chloroplasts will produce more glucose
B. the calvin cycle will increase its production of ADP.
C. the dark reactions will occur faster.
D. the Calvin cycle will produce smaller amounts of glucose
Answer:
Option D, the Calvin cycle will produce smaller amounts of glucose
Explanation:
A plant produces glucose by using the carbon dioxide, ATP and NADPH from the light-dependent reactions during the dark reaction of photosynthesis.
if the plant do not receive enough light, it will not be able to generate sufficient amount of ATP and NADPH for a longer period of time and ultimately it may stop working.
With reduced ATP and NADPH, the Calvin cycle will ultimately produce smaller amounts of glucose.
Hence, option D is correct
support the claim that all living things are made up of cells
Is the relationship of mitochondria and formation of atp true
What feature of DNA replication makes it semi-conservative?
One strand of each new molecule comes from the original molecule.
The specialization of function between the left and right hemispheres is known as __________
Sort the phrases based on whether they describe or give an example of diffusion, facilitated diffusion, both, or neither.
Select the phrases that correctly describe density. there is more than one correct answer. select all that apply.
All the answer that apply include;
Relates a mass to its volume
Varies with temperatures
May have units of grams per mL
Determines if a substance floats or sinks.
Different substances have different densities that are why mixing liquids such as water and paraffin produce two layers since paraffin is less dense than water.
Flowering tundra plants must bloom and set seed quickly because _____.
Answer:
the summers are very short.
Explanation:
Tundra is a type of biome located in the northern hemisphere of the planet, in regions near the Arctic, more precisely in northern America, Europe and other places such as Alaska and Siberia. These regions tend to have very short summers, however summer weather conditions are extremely important for the reproductive process of these plants, so they must bloom and set seed quickly.
Use the following information to answer the question. A student reported that a limp stalk of celery became crisp when placed in ice water In attempting to understand what happened to the celery, the student's suggestion that water entered the celery plant an made it crisp would be a(n)
1 Deduction
2 Conclusion
3 Hypothesis
4 Experiment
Which of the following statements is true? Friction works in the direction opposite of motion. Lubrication can be used to increase friction. Only large masses exert gravitational force. Air resistance is greatest for objects with small surface areas.
When earth completes a full rotation, how much time has elapsed?
The answer is; 24 hours.
Scientists called the full rotation of the earth a day and divided it into 24 hours on the clock. This means from sunrise to next sunrise. They also divided the earth into latitudes that indicate time zones. When one point on earth rotates and return to the same position in space, it has lapsed 24 hours.
Describe the characteristics of a stable society.
The characteristics of a stable society are as follows:
1. A stable society should be self sustaining.
2. It should have social institutions such as educational institutes, political institutes, religious institutes, etc.
3. It should be well organized.
4. There should be cooperation among the people living in a society.
A stable society is characterized by egalitarian structures, economic stability, and the balance of freedom and state authority. It maintains order through shared values, laws, and institutions, and achieves economic well-being with consistent growth, stable unemployment rates, and stable prices.
Characteristics of a Stable Society
A stable society is characterized by its ability to maintain order and ensure the well-being of its citizens. One key characteristic of such societies is their egalitarian nature, especially in simple societies where there is minimal inequality due to the lack of possessions. As societies grow, personalized knowledge decreases, necessitating the establishment of rules and procedures to ensure predictable and understandable behaviors among its members.
Economic stability is an essential indicator of societal stability. This is achieved when the economy is consistently growing, unemployment rates are low and stable, and price levels are maintained consistently. Stability is also influenced by social statics and social dynamics, as identified by the founder of Sociology, Auguste Comte. Societal stability is maintained through governmental policies, shared values, and the presence of strong institutions. On the other hand, social dynamics can lead to changes or adjustments within the society in response to various internal and external factors.
Moreover, the balance between the amount of freedom granted to individuals and the authority exerted by the state is crucial in determining the stability of a society. Durkheim suggested that laws, morals, values, religious beliefs, customs, fashion, and rituals are social facts that contribute to societal stability. Democratic societies aim for equitable representation and participation, which are sustainable characteristics important for societal stability and human security.
When a baby is born why is it important that type 2 alveolar cells are functioning normally?
Type 2 alveolar cells are crucial for producing pulmonary surfactant, which reduces the surface tension in the alveoli and allows for proper lung expansion and gas exchange. Sufficient levels are typically reached by the eighth month of gestation, and a lack of surfactant can lead to respiratory complications in prematurely born infants.
When a baby is born, it is important that type 2 alveolar cells are functioning normally because they secrete pulmonary surfactant. This substance is essential as it reduces the surface tension within the alveoli, making it easier for the infant's lungs to inflate and not collapse upon exhalation. Pulmonary surfactant also helps to increase lung compliance, facilitating easier breathing and effective gas exchange. Type II cells start to secrete small amounts of surfactant around the 19th week of gestation, but adequate levels for lung function are usually not reached until about the eighth month of pregnancy.
In the case of premature birth, before sufficient surfactant is produced, a common complication is respiratory distress syndrome, manifesting as difficulty inflating the lungs. Surfactant therapy may be necessary to support the infant's breathing until their own cells can produce adequate amounts of surfactant to maintain lung function.
The study of biogeography includes information about the location of _____. the fossil record groups of islands fossils and living organisms description
Fossils and living organisms