In each generation, the wings of experimental fruit flies were clipped short for fifty generations. The fifty-first generation was born with normal-length wings. This observation would tend to disprove the idea that evolution is based on
N an experiment, suppose that the wings of fruit flies were clipped short for fifty generations. The fifty-first generation emerged with normal-length wings. This observation would tend to disprove the idea that evolution is based on
a. inheritance of natural variations
b. inheritance of acquired characteristics
c. natural selection
d. survival of the fittest
Inheritance of acquired characteristics. Thus, option "B" is correct.
What is inheritance of acquired characteristics?For fifty generations wings of fruit flies were clipped. Hence they acquired this trait in their lifetime and not genetically. If acquired characteristics were capable of passing on to next generation, 50 generations would have been enough to inculcate this clipped wing trait in fruit flies. Despite it, the fifty-first generation did not have clipped wings.
Hence evolution can not occur without genetic variation. A character simply acquired in a lifetime does not create a difference in germ cells and hence is not enough to be passed on to next generation or cause evolution
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which dental material would you say is the most versatile and widely used today and why?
One of the most adaptable restorative materials in dentistry is dental amalgam. It accounts for over 75% of all restorative materials used by dentists.
What is amalgam?Dental amalgam is a mixture of liquid mercury and metal alloys used to treat cavities caused by tooth decay in dentistry. [1] Mercury (50%) is typically found in low-copper amalgam, along with silver (22–32%), tin (14%), zinc (8%), and other trace metals.
Because of the constant expansion and contraction of amalgam fillings, they can sometimes shatter the tooth. Leakage is also less likely with composite fillings. A leaking filling indicates there is a small breach between the filling and your tooth, which allows dirt and saliva to enter and cause decay.
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You can create alignment in your composition by placing items in a blank way
You can create alignment in your composition by placing items in a linear way.
What is Alignment?Alignment may be characterized as the arrangement of something that is in the appropriate position compared to each other.
Alignment of any objects or things can be effectively done when these items are placed in a linear sequence with definite space between them.
Therefore, it is well described above.
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If one side of the DNA ladder contains the following bases, what would the complementary base pairs be for each?
Answer: The complimentary base pairs would be:
a. TATCTGAATCGG
b. CTGTAAGTGACC
c. CGTTATGAACCG
d. TATCGATGGCAT
e. CAGGGTACGTTC
Explanation:
A combines with T and vice versa.
Similarly G combines with C and vice versa.
Which endocrine hormone promotes the release of glucose from the liver and into the bloodstream?
Glucagon triggers your liver to convert stored glucose (glycogen) into a usable form and then release it into your bloodstream.
What is glucagon?The pancreatic alpha cells that produce glucagon are peptide hormones. It is thought to be the body's primary catabolic hormone since it increases blood levels of glucose and fatty acids. Additionally, it is prescribed as medicine to treat a variety of medical ailments.
When the blood glucose level is too low, the pancreas produces glucagon. Glycogenolysis—the process by which the liver releases glucose into the bloodstream—is triggered by glucagon and occurs in the liver. On the other hand, high blood sugar levels encourage the production of insulin. Insulin-dependent tissues can absorb and utilize glucose with the help of insulin. As a result, the feedback mechanism that maintains steady blood glucose levels includes both glucagon and insulin. Energy expenditure is increased by glucagon, which is higher during stressful situations. The secretin family of hormones includes glucagon.
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please help!
thank you
Estrogen and chlorine move by diffusion, nitrogen move by transport protein whereas glyphosphate moves by active transport.
How give molecules move through cell membrane?Estrogen move across the cell membrane through simple diffusion because it needs no ATP molecule for its movement while on the other hand, glyphosphate use active transport for the movement across cell membrane because they only move when the ATP is available.
Nitrogen moves into the cell membrane of the lung cell through facilitated diffusion by transport proteins while on the other hand, the hydrogen ions moves into the cell membrane of the cell through active transport.
The chlorine ion moves from higher concentration region to lower concentration region by simple diffusion process.
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Which of the following contributes to antibiotic
resistance?
A- giving antibiotics to livestock
B- taking multiple antibiotics at the same time
C- going to the doctor when an infection appears
Taking multiple antibiotics at the same time contributes to antibiotic resistance. Thus, the correct option is B.
What is Antibiotic resistance?Antibiotic resistance may be defined as a process or strategy of microorganisms that generate the capability to conquer the drugs developed to annihilate them.
Overprescription of multiple antibiotics increases the ability of bacteria or other microorganisms to survive in harsh little conditions. Still, slowly they evolve themselves and resist the situation of the high effect of antibiotic resistance drugs.
Therefore, it is well described above.
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name the cell organelle which is abundant in muscle cells
Answer:
Mitochondria is the cell organelle abundant in muscles cells.
Answer:
Mitochondria
Explanation:
Mitochondria is the power house of a cell as we know so as aerobic respiration takes place the mitochondria is always actively ready to release ATP(Adenosine triphosphate) also as energy
Which factor is MOST likely to have contributed to the high fertility rate in Africa?
A-many Economic opportunities
B-poor access to medical care
C-high rate of education
D-Lack of access to food
Answer:
The answer is B. Poor access to medical care
Poor access to medical care is most likely to have contributed to the high fertility rate in Africa. Option B is correct.
Fertility rate is the average number of children that a woman will have in her lifetime. In Africa, the fertility rate is high, meaning that women on average have more children than in other parts of the world. There are many factors that contribute to high fertility rates, but one of the most important is poor access to medical care.
When women do not have access to contraception, they are more likely to become pregnant. They are also more likely to die in childbirth if they do not have access to medical care. In many parts of Africa, girls are married off at a young age. This means that they start having children at a young age, which can lead to higher fertility rates.
In some cultures, it is seen as desirable for women to have many children. This can also contribute to high fertility rates. In some parts of Africa, there are few economic opportunities for women. This can make it difficult for women to support themselves and their children, which can lead to higher fertility rates. Option B is correct.
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¿What is Kingdom Monera?
Kingdom Monera is a biological kingdom that comprises prokaryotic organisms, which are unicellular and lack a nucleus and other membrane-bound organelles.
Monera is one of the five traditional kingdoms of living organisms, which also include Protista, Fungi, Plantae, and Animalia.
The Monera Kingdom includes bacteria and archaea, and some scientists propose that these groups should be split into two separate kingdoms due to their significant molecular and structural differences.
Bacteria can be found in various environments, including soil, water, and inside animals, and they play an important role in many ecological processes, archaea, on the other hand, are often found in extreme environments, such as hot springs and deep ocean hydrothermal vents.
Basic Characteristics of life
Help plss
Answer:
Explanation:
I do not know if it helps but the basic characteristics of life are Cellular organization, the ability to reproduce, growth & development, energy use, homeostasis, response to their environment, and the ability to adapt.
Choose all the definitions below that apply to geopolitics
Group of answer choices
a combination of political and geographic factors relating to a state
a combination of political and geographic factors relating air, water, or oil
a study of the influence of such factors as geography, economics, and demography on the politics and especially the foreign policy of a state
Geopolitics can be given as the study of the influence factors such as geography, economics, and demography on politics and especially the foreign policy of a state. Thus, the correct option is D.
Who coined the term geopolitics?Around the turn of the 20th century, the Swedish political scientist Rudolf Kjellén first used the term "geopolitics," which expanded throughout Europe in the years between World Wars I and II (1918–39) before becoming widely used during the latter. Geopolitics is frequently used as a colloquial term for international politics in modern speech.
After World War II, geopolitical theory lost favor due to its links to imperialistic Japanese and Nazi German aggression as well as because the development of nuclear weapons and ballistic missiles diminished the importance of geographical variables in the global strategic balance of power.
The definition of geopolitics stands for the analysis of the factors including geography, economics, and demography on politics and foreign policy. Thus, option D is correct.
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PLEASE HELP :)
Describe how flowering plants reproduce.
How do flowers help other organisms in our environment?
Which parts of a plant are responsible for reproduction? Describe the role that each of them will play.
Describe what occurs during the process of seed development.
Answer:
Pollen is carried by insects or blown by the wind from one flower to another. This process is called pollination. Pollen reaches the new flower and travels to the ovary where it fertilises egg cells (ovules) to make seeds. This is fertilisation.So, in providing the seeds that make it possible to grow more plants, flowers benefit the environment by creating more carbon dioxide-absorbing and oxygen-radiating plants. Flowers also play a vital role in cleaning up other parts of our world.Flowering plants reproduce sexually through a process called pollination. The flowers contain male sex organs called stamens and female sex organs called pistils. The anther is the part of the stamen that contains pollen. This pollen needs to be moved to a part of the pistil called the stigma.In the process of seed germination, water is absorbed by the embryo, which results in the rehydration and expansion of the cells. Shortly after the beginning of water uptake, or imbibition, the rate of respiration increases, and various metabolic processes, suspended or much reduced during dormancy, resume.hy yaar hopE it helpZ u xd ~
look at photo or pdf down there please
Answer:
Pituitary: part of the brain that helps to regulate the endocrine system
thyroid: regulates metabolism
thymus: helps children develop a strong immune
hypothalamus: regulates growth, water balance, and blood pressure
Explanation:
Answer:
Pituitary: part of the brain that helps to regulate the endocrine system
thyroid: regulates metabolism
thymus: helps children develop a strong immune
hypothalamus: regulates growth, water balance, and blood pressure
Explanation:
I copied and pasted the other person answer so you can give him brainlest
Just click the crown on his answer
Which of the following is most likely to happen if oxygen is not able to enter a cell?
The cell will not be able to produce energy
The cell will not be able to get rid of waste
The cell will not be replaced when damaged
The cell will not be able to split into daughter cells
Answer:
I think its "Cells will not be able to produce energy"
Which describes the correct pairing of DNA bases?
OA. A with T, and C with G
OB. A with C, and T with G
OC. A with G, and C with T
OD. A with A, and G with G
SUB
The correct pairing of DNA bases A. T with A, and C with G. Thus, option "A" is correct.
How, explain your answer briefly?It can be explained with the help of complementary base pairing.
In DNA, thymine (T) always forms a base pair with adenine (A) and cytosine (C) always base pairs with guanine (G) .
There are two hydrogen bonds present in between A and T and three hydrogen bonds in between G and C.
Thus, option "A" is correct.
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Suppose, there are two identical planets just like Earth. On planet P, only exhaustible fuels are used while on planet Q only inexhaustible fuels are used. Which among the two planets will have no issues of global warming and pollution?
(A) Planet P
(B) Planet Q
(C) Both planet will face these problems
(D) Cannot say
how do blood vessels function to maintain body temperature on hot and cold day
Answer:
Vasodilatation
Explanation:
The blood vessels under your skin get wider. This increases blood flow to your skin where it is cooler — away from your warm inner body. This lets your body release heat through heat radiation.
Answer:
on a hot day they vasodillate causing a lot of blood to flow near the skin surface thus losing heat by convection while voice versa during cold Temp
With the development of air flight and mass transit, humans are able to move very rapidly around the world.
Which of the following is a possible consequence of increased human travel?
Choose 1 answer:
Explanation:
human are able to move very rapidly around the world because of good atmosphere if there is more powerful population
Answer: CORRECT (SELECTED)
Exotic species are introduced to new areas where they compete with native species.
Explanation:
Introduced, exotic species can outcompete native species and alter the biodiversity in that area.
Explain what is meant by the term differentiate.
The process by which cell types or cell populations attain distinct and different forms and functions is called differentiation.
This is the process that allows the stem cells to differentiate and form a cell type that will perform a specific function.
The process of differentiation is essential for the formation of the different organs in multicellular organisms.
Develop a mind map representing the narrative of the historical development of technology and the impact of IKS throughout the history of humanity.
Indigenous Information System (IKS) is the body of knowledge that communities have accumulated over many generations as a result of their interactions with the environment.
Indigenous Knowledge System (IKS): What is it?The technological, economic, philosophical, educational, and governing systems are all included in the indigenous knowledge system.
Prior to the development of the contemporary scientific knowledge system, indigenous societies established their own knowledge, which is included in indigenous knowledge systems (IKS).
Acupuncture from China is an illustration of IKS. Through the preservation and wise use of biodiversity, it may significantly advance sustainable development.
There is a definite need to preserve these systems, acknowledge their worth, and stop their destruction in order to strengthen indigenous knowledge practices and cultures.
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What evaluation plan can be done to measure the effectiveness of utilizing low air loss mattresses for patients in nursing homes. Provide the following criteria, making sure your evaluation plan is comprehensive and concise:
Propose evaluation methods to evaluate the implementation of your evidence-based intervention. Describe the methods selected and provide rationale and support for why the proposed methods are best for the collection of outcome data.
Describe how the proposed evaluation methods will measure whether the project objectives are achieved. Explain how the outcomes will be measured and evaluated based on the evidence. Address validity, reliability, and applicability.
Describe strategies to take if outcomes do not provide positive results.
Discuss implications for practice and future research.
The evaluation method to evaluate the implementation of the evidence-based intervention is the integration of the evidence with clinical expertise.
What is an evaluation plan?An evaluation plan simply means a written document that describes how to evaluate and monitor a program.
Low air loss mattresses can be used for both the prevention and treatment of pressure wounds, and are well suited to any patients susceptible to these events such as those who are immobilized or lack adequate sensory perception.
Findings support the expanded use of this technology for patients with mild pressure ulcers and good healing characteristics. For these patients, the cost-effectiveness of low-air-loss beds is comparable to other accepted health treatments.
For patients with severe ulcers and poor healing characteristics, low-air-loss bed cost-effectiveness compares poorly with other accepted health treatments unless the lease cost can be substantially reduced, or unless life with a pressure ulcer is valued close to death.
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Question 6
Which of the following is not a factor of substance abuse?
Answer:
Can you give me the options
An object moving at a constant velocity will always have a
negative displacement
negative acceleration
zero acceleration
zero displacement
Answer:
zero acceleration
Explanation:
hope I helped
Answer:
zero acceleration
Explanation:
I have it confirmed
hope it helps :-)
Which statement is true?
The primary function of a the ribosome is protein synthesis
The primary function of a the ribosome is protein synthesis
The primary function of the vacuole is cell division
The primary function of the vacuole is cell division
The primary function of the nucleus is to store nutrients
The primary function of the nucleus is to store nutrients
The primary function of the mitochondrion is movement.
The primary function of the mitochondrion is movement.
Answer:
The primary function of a ribosome is protein synthesis.
which of the following is an enzyme required by the process of rephosphory,to create ATP? A) AD Pase B)AT Pase C)Polymerase D)AT synthase ?
ATPase is the enzyme which is required to create ATP and is denoted as option B.
What is ATPase?This type of enzyme is found in the mitochondrion and catalyzes the formation of ATP which provides energy to cells.
The ATP which is referred to as adenosine triphosphate is formed from the molecules known as ADP and inorganic phosphate which are present in the body cells. This ensures that the daily energy needs of the body are met.
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What does the term temperature control refer to
1-the oven temperature recommended in a receipe
2- maintenance proper room temperature inside the dining area
3-the temperature required for maintaining food safety
4-the temperature control dial in the freezer
Temperature control refers to the temperature required for maintaining food safety (option '3')
what is temperature?
Temperature can be defined as a measure of how hot or cold something is; strictly, a measure of the average kinetic energy of the particles in an object, which is also a type of energy that is involved with motion.
What is food safety?
Food safety refers to routines that are involved in the preparation, handling and storage of food meant to foodborne diseases and injuries. it can also means the prevention of food contamination prior that will be released to the consumer.
What is importance of food safety?
Food safety is important as it helps to protect consumer from the risk of food borne illnesses. It is essential to prevent consumers from risks of health –related conditions such as allergy and even death.
What are some of the food safety rules:
keep clean, separate raw and cooked, cook thoroughly, keep food at safe temperatures, and use safe water and raw materials.learn more about food safety here:
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Which forms as a result of compressional stress?
anticline and syncline
normal fault
strike-slip fault
fault-block mountain
Anticline and syncline forms as a result of compressional stress. Thus, the correct option is A.
What is anticline ?Folds known as anticlines occur when formerly horizontal strata have been folded upward and the two limbs deviate from the surface.
When rocks deform in a ductile way, they may bend or fold, and the resulting structures are known as folds, rather than shattering to produce faults or joints. Folds are caused by compressional or shear pressures operating over a long period of time. Such folds originate from rocks that we often consider brittle behaving ductilely when the strain rate is low and/or the temperature is high.
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Answer: A
Explanation: E 2022
What term is used for species that are at serious risk of extinction?
Answer:
Endangered species
What word is used to describe respiration which "uses oxygen"?
Answer:
aerobic respiration
Explanation:
Anaerobic respiration doesnt use oxygen whereas aerobic respiration does
Answer:
aerobic is the right answer
Explanation:
aerobic means a respiration that requires oxygen
while anaerobic means respiration that does not need oxygen
