The Answer is C) planets; moons
Answer:
C. planets; moons
Explanation:
From Newton's law of inertia, a body keeps moving in straight line and or be at rest, until an external unbalanced force acts on it.
The planets remain in the orbits around the sun and similarly moons remain in the orbits around their planets due to gravity.
Sun's gravitational pull keeps the planets in their orbits, just as a planet's gravitational pull keeps its moons in their orbits.
In the absence of gravity, the planets and moons would move in straight line path.
Ponds are ______.
A.
B.
C.
D.
A, is wrong.
B, is correct.
C, is wrong.
D, is wrong.
26
Between 1347 and 1350, the bubonic plague killed nearly half of Europeans. Scientists have discovered that about 10% of the modern descendants of those who survived the plague have a resistance to infection by the Human Immunodeficiency Virus (HIV).
Which hypothesis bestexplains this occurrence?
A.The individuals who survived were not exposed to the plague which enabled their descendants to be resistant to HIV.
B.The individuals who survived the plague passed on genes to their modern descendants which allowed them to be resistant to HIV.
C.The bodies of individuals with a resistance to HIV contain small numbers of the bacteria linked to the plague which enabled them to be resistant to HIV.
D.Individuals who survived the plague have stronger immune systems, and as a result, their descendants have immune systems strong enough to be resistant to HIV.
D. because of their ancestors being able to survie the plague it will be easier for their decendants to be more resistant to similar diseases.
Final answer:
The hypothesis that the survivors of the plague passed on protective genes to their descendants, leading to some resistance to HIV infection, is supported by a blend of biological, environmental, and social factors influencing immune competence.
Explanation:
The most likely hypothesis that explains why about 10% of the modern descendants of those who survived the plague in Europe between 1347 and 1350 have a resistance to infection by HIV is that the individuals who survived the plague passed on genes to their modern descendants who allowed them to be resistant to HIV. There is scientific consensus that exposure to the plague pathogen during medieval times did not generate a long-lasting immunological memory. However, those who had stronger immune systems due to certain genetic traits were more likely to survive and pass these favorable genes onto their offspring. Over generations, this resulted in a population with a higher prevalence of these protective genetic traits, which appears to convey some resistance to HIV. This observation underscores the significance of the interaction between biological, environmental, and social factors in shaping immune competence (IC), which can vary greatly among individuals and populations.
How many population(s) can have the same species name
Answer:
A population is all the organisms that both belong to the same species and live in the same geographical area. A species is defined as a group of organisms capable of interbreeding and producing fertile offspring. There can be multiple populations of one species but a population only consist of one species.
Explanation:
A population consists of all individual organisms of the same species living in a specified area.
A population refers to all individual organisms of the same species living and interacting in a defined area.
For example, all the angelfish living in a specific part of the ocean constitute the angelfish population.
The number of populations with the same species name can vary from a few individuals to millions, depending on the species and its habitat.
Look at the diagram below.
What kind of molecule is represented in the diagram?
Answer:
A nucleotide.
Explanation:
DNA and RNA are the polymers of nucleotide or a nucleotide may be considered as a single monomer unit of polynucleotides. These are the building blocks of the nucleic acids.
The structure of nucleotide consists of a pentose sugar, nitrogenous bases and a phosphate group attached with the pentose sugar as depicted in the question diagram. Hence, the given molecule is nucleotide.
Thus, the correct answer is option (D).
the correct answer is.
-----> (D.) A nucleotide
can anyone please read carefully and answer this for me please i need help
Answer 1:
A type of molecule that keeps everything in place.
Answer 2:
proteins
Answer:
The molcule that Keeps everything together. And different types of proteins
Hope this helped!!
Bone and blood cells are considered___.
bone marrow
hope this helps :)
They are called specialized cells
Which group of animals could be correctly classified as endothermic?
Question 11 options:
robin, squirrels, mice
bears, snakes, wolves
frogs, lizards, snakes
groundhogs, hawks, crab
Answer:
first set
Explanation:
because endo means small
what are the pros and cons of hydropower
Answer:Hydroelectric power is not perfect, however, and does have some significant disadvantages: Hydropower is non-polluting, but does have environmental impacts. Hydropower facilities can affect land use, homes, and natural habitats in the dam area
Explanation:
Hydroelectric power is not perfect, however, and does have some significant disadvantages: Hydropower is non-polluting, but does have environmental impacts. Hydropower facilities can affect land use, homes, and natural habitats in the dam area
Final answer:
Hydropower, also known as hydroelectric power, is a clean and renewable source of energy that relies on the force of moving water to generate electricity. While it is reliable and flexible, there are also drawbacks such as its environmental impact, cost, and limited potential for expansion.
Explanation:
Hydropower, also known as hydroelectric power, is a type of renewable energy that relies on the force of moving water, typically from rivers or dams, to spin turbines and generate electricity. Like any source of energy, hydropower has both pros and cons.
Pros of Hydropower:
Clean and renewable: Hydropower does not directly produce air pollutants and the source of power, water, is regenerated naturally.Reliable: Hydropower is a dependable source of energy as long as there is a steady supply of water.Flexible: The output of hydropower can be easily adjusted to meet fluctuations in electricity demand.Cons of Hydropower:
Environmental impact: The construction of dams and reservoirs for hydropower can disrupt ecosystems, obstruct fish migration, and result in the loss of habitats.Cost and space: Building hydropower facilities can be expensive and require large areas of land.Limited potential: The availability of suitable locations for hydropower is limited, and not all regions have access to rivers or suitable topography.cells are productd through what stage
You're either looking for Mitosis or Cytokinesis.
Mitosis. The stages that a cell goes through to divide.
Cytokinesis. The final cellular division to form two new cells.
Which option shows a reaction in which calcium carbonate (CaCO3) produces calcium oxide and carbon dioxide?
synthesis: CaO + CO2 →
CaCO3
double displacement: CaO →
CO2 + CaCO3
decomposition: CaCO3 →
CaO + CO2
single displacement: CaCO3 →
CaO + CO2
The reaction in which calcium carbonate produces calcium oxide and carbon dioxide is: CaCO3 = CaO + CO2. Thus, the third option is the right one.
The breaking down of calcium carbonate to calcium oxide and carbon dioxide is called DECOMPOSITION REACTION. A decomposition reaction is a type of reaction in which a single element is broken down into two or more elemental parts, which are less complex than the parent compound.There are three types of decomposition reaction, these are thermal, photo and electrolytic decomposition reactions.
what is the making of a polypeptide with a specified order of amino acids? A) transcription B) translation C) replication
B. Translation
Explanation;Translation is the process by which a protein or polypeptides are synthesized from the information contained in a molecule of messenger RNA .During translation, messenger RNA (mRNA) is decoded in a ribosome to produce a specific amino acid chain, or polypeptide. This occurs in three stages; Initiation, elongation and termination.A series of amino acids joined by peptide bonds form a polypeptide chain, and each amino acid unit in a polypeptide is called a residue.what four parts do all cells have and what is the function of each?
Plasma membrane: a microscopic membrane of lipids and proteins which forms the external boundary of the cytoplasm of a cell or encloses a vacuole, and regulates the passage of molecules in and out of the cytoplasm.
Cytoplasm: the material or protoplasm within a living cell, excluding the nucleus.
Ribosomes: a minute particle consisting of RNA and associated proteins found in large numbers in the cytoplasm of living cells. They bind messenger RNA and transfer RNA to synthesize polypeptides and proteins.
DNA: deoxyribonucleic acid, a self-replicating material which is present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.
All cells have four main components, such as the cell membrane, cytoplasm, genetic material, and ribosomes, regardless of whether they are prokaryotic or eukaryotic, as all cells have these components.
What are the fundamental components of the cells?All cells have some fundamental structures, such as the genetic material of a cell, which is comprised of DNA, which contains the instructions for the development and function of the organism, and the cytoplasm, composed of water, salts, etc., which is the site of many important cellular processes. While cells have the plasma membrane, which is composed of a lipid bilayer and acts as a selective barrier,
Hence, all cells have four main components, such as the cell membrane, cytoplasm, genetic material, and ribosomes, regardless of whether they are prokaryotic or eukaryotic, as all cells have these components.
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What characteristic best identifies a comet?
A)
Comets are streaks of light.
B)
Comets are larger than asteroids.
C)
Comets enter the Earth's atmosphere.
D)
Comets develop a fuzzy, cloud-like shell called a coma, as well as a tail.
D would be chur answer a cloud which is the atmosphere of the comet and can extend for millions of miles.
A comet is a body of rock, ice and dust that gets caught in orbit of the sun. Comet's are usually miles in diameter, and can be recognized by the long "tails" that trail behind them. This tail is made up of gasses and dust that trail miles and miles behind the comet.
Hope this helps!
help with microbiology!
Answer:
21. C
22. A
23. B
24. C
Explanation:
21. The structure of cell shape is not maintained by the cell membrane, Rather it is the product of the cytoskeleton which is the filaments and microtubules in the cell. They change the shape of the cell by contracting and relaxing. They also control the internal organization of organelles inside the cell.
22. Psychrophile bacteria thrive in low temperatures which they are adapted to. They can be expected in the polar regions and deep seas. Their metabolism can function in these low temperatures because their cells have antifreeze protein that protects the cells from ice-induced desiccation and damage.
23. Thermophiles are extremophiles that thrive in high temperatures. They can be expected in hydrothermal vents. They have heat-stable proteins and enzymes and DNA (that has high G-C content) that is not easily denatured at high temperatures.
24. This phase is called the stationary phase. The reproduction rate is equal to the death rate. This is because the population has reached its carrying capacity. This is why there is no growth in population.
what term best describes an enzyme
Enzymes lower the activation energy level of a chemical reaction, thus enabling the reaction to proceed. Hope this helps
An enzyme is a protein catalyst that accelerates biochemical reactions by lowering the activation energy. Enzymes are specific for their substrates and can break them down, build complex molecules, or affect reaction rates.
Explanation:An enzyme is a type of protein catalyst that helps to accelerate biochemical reactions by lowering the activation energy needed for the reaction to occur. Enzymes are specific for the substrates they act on, and they bind to the substrate at their active site. They can either break down substrates (catabolic enzymes), build more complex molecules (anabolic enzymes), or affect the rate of a reaction (catalytic enzymes).
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Today, genetically-engineered crops are becoming more common. Which of the following is a likely possible negative impact of the use of genetically-engineered crops?
A. Genetically-engineered genes can be transferred to wild plants in the area.
B. Animals that consume genetically-engineered crops will no longer be able to reproduce.
C. Crops that have been genetically engineered to resist disease would increase the use of pesticides.
D. Human DNA might experience recombinant mutations with the plant DNA.
Answer: Genetically-engineered genes can be transferred to wild plants in the area.
Explanation: Gene flow between similar species is a common occurrence. It is possible for genetically-engineered genes in a crop plant to transfer to related species of wild plants. This could cause multiple problems. For example, if the genetically-engineered gene makes the plant immune to a weed killer, then wild plants that are considered weeds by the farmer would no longer be controllable with weed killers. it from study island
Answer: Genetically-engineered genes can be transferred to wild plants in the area.
Explanation: Gene flow between similar species is a common occurrence. It is possible for genetically-engineered genes in a crop plant to transfer to related species of wild plants. This could cause multiple problems. For example, if the genetically-engineered gene makes the plant immune to a weed killer, then wild plants that are considered weeds by the farmer would no longer be controllable with weed killers.
Proof that I am right look below
The diagram shows the layers of earth. Convection currents in which region influence the movement of tectonic plates?
Answer:
C
Explanation:
This layer is called the mantle and is formed of semi-plastic rocks (liquid enough to churn but the rocks are not really melted because of the enormous pressure of the overlying crust above). The layer is heated from below by the core that is hotter, The hotter mantle rises as it gets less dense while the cooler mantle at the upper layers sinks because it is denser. These convections drag with them the continental plates of the crust.
Convection currents in the Earth's mantle are responsible for the movement of tectonic plates. These currents result from the heating, rising, cooling, and sinking of mantle material. The movements of these plates result in phenomena such as earthquakes and volcanoes.
Explanation:The convection currents responsible for the movement of tectonic plates occur in the mantle region of the Earth. This is the layer between the crust and the outer core that accounts for about 84% of Earth's volume.
In this region, heat from the Earth's interior causes the material in the mantle to heat up and become less dense, causing it to rise. Once it reaches the top of the mantle and comes close to the Earth's crust, it cools, becomes denser, and sinks back down. This cycle is repeated over and over to create convection currents which provide the force that ultimately causes the movement of the tectonic plates.
These moving plates are responsible for geologic phenomena such as earthquakes, volcanoes, and mountain building. This complexity of plate tectonics is a fundamental concept in geology, highlighting the dynamic nature of our planet.
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What factor will mostly determine where a wave current project can be located ?
(A) Current climate conditions
(B) Presence of waves
(C) Temperature of the water
(D) Type of waves generated
Answer:
(B) Presence of waves
Explanation:
Presence of waves is a factor that will mostly determine where a wave current project can be located.
This energy comes from moving object, or objects that have stored energy. * sound energy chemical energy electrical mechanical
Motion energy, or the more common term, mechanical energy is the energy stored in objects.
The more an object moves faster, the more energy is stored. Some examples of motion energy include wind, a flowing river, a moving car, or a person running.
Final answer:
Mechanical energy is the energy associated with moving objects or storing energy, such as in kinetic or potential forms. Other forms like chemical, sound, and electrical energy can be transformed into mechanical energy. A car's movement exemplifies kinetic energy, while a compressed spring showcases potential energy.
Explanation:
The question refers to energy that comes from moving objects or stored energy sources. This type of energy is commonly known as mechanical energy, which is the sum of kinetic and potential energy in an object. Kinetic energy is the energy of motion, while potential energy is stored energy that is ready to be converted into other forms. For instance, a moving car has kinetic energy, and a compressed spring has potential energy.
Other forms of energy mentioned include sound energy, which involves the vibrations of matter; chemical energy, associated with the arrangement of atoms in molecules such as in food or fuel; and electrical energy, coming from the movement of electrons. Each of these forms of energy can be converted from one to another, like chemical energy converting to mechanical to power a car, or electrical energy converting to light in a bulb.
Understanding these forms of energy and their conversion is essential. For example, when you use a battery, it releases chemical energy which is then converted into electrical energy to power devices. Similarly, when you speak, your vocal cords vibrate to produce sound energy.
Scientist have developed the atomic theory over a period of hundreds of years what will help us further the development
Increasing the ability of technology, like microscopes, to see even smaller particles.
hope this helps :)
Gregor Mendel demonstrated that traits are passed from parents to offspring independently of one another under all circumstances that he tested. All other genetics researchers have observed this as well. Based on this information, the statement “traits are passed from parents to offspring independently of one another” is
a law.
a hypothesis.
a theory.
an observation.
The correct option is LAW.
In science, a scientific law refers to a statement that predicts a range of natural phenomenon, that is, it is a generalized statement, which explains some set of observations. Before a scientific hypothesis can become a scientific law it must have been tested severally by many scientists and all the scientists must agree that the results remain constant despite continuous testing. As a result of extensive testing, a scientific law is considered to be true for all situations.
In this assignment, you will explore types of tissue and use what you learn to answer some follow-up questions.
Read the article and use the information to answer the following questions
Types of Human Tissue
Just like members of a sports team will work together to achieve a goal or win a game, cells work together to perform major tasks in the body. Tissues are groups of cells with similar shapes that work together in this way. Tissues are grouped into four classifications: epithelium, connective, muscle, and nervous. Each tissue classification has a unique arrangement of cells and material outside the cells that is specifically designed to perform a certain function.
Epithelial Tissue
Epithelial tissues form the various linings of the body. This includes the lining of the organs, blood vessels, digestive tract, respiratory tract, tubules of glands, and the skin itself.
This topmost layer of cells in this slide of the trachea is epithelium. The epithelial cells in this organ protect the underlying tissues from drying out and help to capture and remove dust, germs, and other impurities in air.
Simple epithelium contains only a single layer of cells and is best-suited for absorption and secretion. The lining of the stomach, for example, contains epithelium that secrets acid and enzymes to digest food. The epithelium of the kidneys filters blood and produces urine. Stratified squamous epithelium contains multiple cell layers and is highly protective. The outermost layer of the skin contains stratified squamous epithelium.
Because epithelium serves as body linings, epithelial cells have short life spans and can regenerate relatively quickly following injury.
Connective Tissue
Connective tissue binds or supports other tissues or organs. Unlike epithelium, connective tissues contain both cells and extracellular matrix – a mixture of protein fibers, fluid, and other substances found outside the cell that provide structural support to the cells.
In addition to cells, connective tissues contain a matrix of extracellular substances that may include protein fibers, lipids, fluids, and other dissolved substances.
Connective tissues include tendons, cartilage, bone, blood, and fat.
Muscle Tissue
Muscle tissue can relax and contract, generating movement. There are three types of muscle tissue.
Skeletal muscle cells are long and cylindrical, cardiac muscle is branched, while smooth muscle cells are spindle-shaped.
Cardiac muscle tissue is made of cells that are branched, or striated. Each cell has a single nucleus. These cells are found in the heart and have the ability to contract regularly through your whole life.
Skeletal muscle tissue is made of cells that are very long, striated, and can have more than one nucleus. These are found in all the voluntary muscles of the body, such as the biceps muscles of the arms.
Smooth muscle tissue is made of cells that are short, spindle-shape and non-striated. Each cell has a single nucleus. These are found lining the hollow organs of the digestive tract and help to move food forward.
Nervous Tissue
Nervous tissue has the ability to communicate with other cells in the body through the transmission of electrical impulses. There are two primary types of cells found in nervous tissue. Neurons are star-shaped cells with elongated dendrites and axons that can form physical connections with other cells. Neuroglia are smaller cells that support neurons. This tissue is found in the brain, spinal cord, and all of the peripheral nerves throughout the rest of the body.
The large cells are motor neurons, surrounded by many smaller neuroglia.
Name three types of connective tissue.
Answer:
Include three of them in your response
Explanation:
Cartilage
Bone
Blood
Fat
Tendons
Three types of connective tissue are:
TendonsCartilageBoneWhat are these connective tissues?Tendons: Tendons are tough, fibrous cords that attach muscles to bones. They are made up of a dense network of collagen fibers.
Cartilage: Cartilage is a smooth, flexible tissue that provides support and cushioning for joints. It is made up of a gel-like matrix of chondroitin sulfate and hyaluronic acid.
Bone: Bone is a hard, rigid tissue that forms the skeleton. It is made up of a matrix of collagen fibers and minerals, such as calcium and phosphorus.
Other types of connective tissue include:
Adipose tissue (fat)
Loose connective tissue
Dense connective tissue
Blood
Lymphatic tissue
Connective tissue is the most abundant type of tissue in the body. It plays a vital role in supporting and binding other tissues and organs. It also helps to protect the body from infection and injury.
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What causes an object with mass to have weight?
Gravity is the attractive pull between two objects that have mass. The strength of gravity is directly proportional to the amount of mass of each object. ... An object with twice as much mass will exert twice as much gravitational pull on other objects. The gravitational force increases as the size of an object increases
Bill is a fisherman on the Gulf Coast, and he has noticed that over the past several years, the shrimp population has grown smaller. He wants to come up with a way to keep fishing for shrimp, but at the same time, he doesn't want the shrimp numbers to drop any further. How could Bill accomplish this? A) Keep fishing for shrimp, but at a different location. B) Stop fishing for shrimp to let the population rebound. C) Keep fishing for shrimp, but start fishing for other fish as well. D) Keep fishing for shrimp, but at a rate that lets the shrimp population start to grow again.
Answer:
D
Explanation:
Answer: D) Keep fishing for shrimp, but at a rate that lets the shrimp population start to grow again
Explanation:
D) Keep fishing for shrimp, but at a rate that lets the shrimp population start to grow again is the correct option. As it is given in the situation, that the shrimp population has grown smaller. But at the same time he wants to keep the fishing process continue. To keep in balance over the overall population size of the krill species it will be better that the shrimp population is allowed to grow in number by reproduction of numerous members and fishing practice should stop for sometime.
Which of these best explains why the use of fossil fuels for energy production is a not a long-term solution to the world's energy needs?
because fossil fuels take forever to be created hope this helps
There is a limited amount of fossil fuels available.
HELP ASAP
Mars has much less gas in its atmosphere than Earth does. This is a reason why, on Mars, _____.
A. it is warmer
B. there is no wind
C. the air pressure is lower
D. the air pressure is higher
the answer is c. the air pressure is lower
the air pressure on mars is lower as there is little gas. Air is gas so with little gas you could expect the air pressure to be lower and less dense making it hard for us humans to breathe
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can someone please help me with science/biology on DNA and CHROMOSOMES....and is my answer right?
What is the term used for the elements and compounds before a chemical reaction takes place?
Explanation:
Before a chemical reaction, the elements and compounds which are about to take part in the reaction are known as reactants.
And, when the chemical reaction takes place between the given elements and compounds then they change into products.
For example, we take sodium and chlorine elements and before any chemical reaction they are the reactants.
But when a chemical reaction takes place between sodium and chlorine then it results into the formation of sodium chloride which is the product.
In a chemical reaction, the term used for the elements and compounds present before the reaction takes place is 'reactants'. These undergo a chemical reaction to form the 'products'.
Explanation:In a chemical reaction, the substances that are present before the reaction takes place are referred to as the reactants. These could be individual elements or compounds that chemically interact with each other. For instance, in the formation of salt (NaCl), sodium (Na) and chloride (Cl) are the reactants. After the reaction has taken place, the substances that are produced are referred to as products.
Furthering the explanation with another example, let's consider water's formation. The reactants in this chemical reaction are hydrogen and oxygen, which are the elements. They react to form water, which is the product and a compound. The chemical equation would be: 2H + O -> H₂O. The arrow indicates the direction of the reaction, from reactants to products. Thus the term used for elements and compounds before a chemical reaction is 'reactants'.
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A specific flower is pollinated by only one type of bee. This flower has developed a structure that mimics the smell and look of a female of that species so the males will be attracted to it.
What evolutionary process does this bestillustrate?
coevolution
extinction
macroevolution
speciation
This best illustrates coeveolution because the flower evolved with the bee to get it to be more attracted to it.
The goal of a statement of purpose is:
Answer:
A statement of purpose's goal is to convince someone that you should be admitted to the program or be awarded a position.
Explanation:
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Answer:
to indicate what is expected to be accomplished in doing an experiment.
Explanation:
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