Some frogs are slimy because they are covered in a mucous coating. This coating helps them keep their skin moist which helps them breathe through their skin. The mucous often contains other chemicals, like antibacterial or anti fungals to help protect the frog.
I hope this helps you
Amphibians are slimy due to their permeable skin and mucus glands, which help in respiration, moisture retention, and protection against predators. This slimy layer is essential for amphibians' survival in their wet habitats and plays a crucial role in their sensitivity to environmental changes. The mucus can also contain toxins to deter threats.
Explanation:Amphibians, such as frogs, toads, salamanders, and newts, are known for their slimy appearance, which is a result of their unique skin properties. Their skin is permeable and contains mucus glands that secrete a moist layer of mucus. This moist layer is crucial for their survival as it helps in cutaneous respiration, allowing them to absorb oxygen and release carbon dioxide directly through their skin. Additionally, the mucus serves to keep their skin moist, protecting them from dehydration while also facilitating easier movement in water.
Another vital role of the mucus is to protect amphibians from predators. In some species, the mucus contains toxins which can deter or harm potential threats. The unique skin of amphibians also means they are especially sensitive to environmental changes and pollution, making them important indicators of ecosystem health.
Living both on land and in water, amphibians have adapted to their environments with features like a lightweight skull and calcified bones to support movement and respiration in both mediums. Their skin's capacity to absorb water and gases directly is why amphibians are often found in moist environments and why they are at risk in dry or polluted conditions.
is the following sentence true or false?an average star spends 90 perecent of its life as helium burning main sequence star
Answer: The answer is True!
Explanation: I have my ways ;>
biology help pleaseee ty
C) rate of division is correct answer.
Hope it helps;Pls mark as brainliest answer
Which of the following is the smallest single component of a typical soil? (2 points)
Gases
Minerals
Moisture
Organic material
Answer: Gases
Explanation: At first, I assumed minerals because I hadn't written them down as one of the materials composed of sediment. I then realized that so much of soil is a solid, you can see it. So, the smallest component would be the one component that you can't see, which is gas.
scientists use squid nerve cells in research because the nerve cells of a squid are 1000 times fatter than those of a human. how is the outcome of the nervensearch most likely to be affected
Answer:
The outcome would be the same because in both cases a nerve cell is being researched.
Explanation:
As the difference in concentration between two areas increase does diffusion increase or decrease?
Diffusion is the movement of particles down their concentration gradient, meaning they flow from places of high concentration to places of low concentration.
Diffusion can be defined as the movement of substance from a area of higher concentration to area of lower concentration until the concentration gets equal across space.The difference between the concentration of molecules of the substance between two areas is said to be concentration gradient.As the difference in concentration increases, concentration gradient gets more steep thereby allowing more rapid diffusion to take place, which means diffusion increases.
In some systems, energy will transform from one form to another. Which of the following is an example of electrical energy bei transformed to both kinetic energy and sound energy?
A.) a television showing a movie
B.) a tree falling in the woods
C.) a remote control car being operated
D.) a radio playing music
hershey and chase confirmed that dna, not protein, was the genetic material. how do the results of their two experiments support this conclusion?
Hi,
Harshey and Chase did a great experimentation which was basically a two step experiment to prove that DNA and not proteins are the actual carriers of genetic information from parents to offspring.
In the first part of their experiment, they used bacteriophages (virus that eat bacteria). They used radioactively labeled sulphur(35S) medium to grow bacteriophages and observed that all the bacteriophages had proteins with radioactive sulphur(35S). In the next step they allowed these phages to infect bacteria and to their surprise, they found that the bacteria did not had radioactively labeled sulphur in them because the coat of bacteriophage stays outside the body of bacteria when it attacks it. This proved that DNA not proteins were the hereditary material. To make their results more reliable, they did a second experimentation in which, they marked the DNA of the phage with radioactive phosphorus 32P. After labeling DNA, they repeated the same experiment and this time, they found radioactive phosphorus inside the bacteria.This meant that the bacteria had DNA of phage entered inside them and this again proved that DNA not proteins are the hereditary material. You can see attached image for better understanding.
Hope it help!
Hershey and Chase conducted two experiments using bacteriophages. They labeled the bacteria's protein with radioactive sulfur and the DNA with radioactive phosphorus. By observing that only the radioactive DNA entered the bacterial cells, they provided evidence that DNA, not protein, is the genetic material.
Explanation:Hershey and Chase conducted two key experiments that provided evidence supporting the notion that DNA, not protein, constitutes the genetic material. For their experiments, they studied bacteriophages, viruses that infect bacteria, which have a simple structure composed of a protein coat and a nucleic acid core.
In the first experiment, they labeled the protein coat of the phage with radioactive sulfur (³5S), while in the second experiment, they labeled the DNA of the phage with radioactive phosphorus (32P). After allowing the phages to infect bacteria, they found that only the radioactive DNA, not the radioactive protein, had entered the bacterial cells. This observation led them to conclude that DNA, not protein, carried the information necessary for the replication of the phage within the bacterial host.
These findings were crucial in convincing the scientific community to accept DNA as the molecule responsible for heredity, thus confirming the role of DNA as the genetic material.
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WhWhat is an important function of mitochondria
An important function of the mitochondria is to create ATP (energy). The cell uses this ATP produced by the mitochondria to carry out cellular functions.
How can an astronaut weigh different amounts when in different locations
How does Digestion work?
How is plastic made?
Plastic is taken from the natural, organic substances called Cellulose, Coal, Natural Gas, salt and Crude oil.
Plastics are synthetic polymers that are most often made from petrochemical hydrocarbons.
Extraction of Raw Materials: The primary raw materials for making plastic are natural gas, crude oil, and coal. These materials contain hydrocarbons, which are crucial for the formation of plastic polymers.
Refining and Cracking: The raw materials are refined to separate the hydrocarbon molecules. In a process called cracking, large hydrocarbon molecules are broken down into smaller ones, often resulting in ethylene and propylene, which are essential monomers for plastic production.
Polymerization: The monomers are subjected to chemical processes like polymerization, where they are bonded together to form long chains of polymers. There are different methods of polymerization, such as addition polymerization and condensation polymerization.
Pelletizing: The polymer chains are then cooled and cut into small pieces or pellets. These pellets serve as the raw material for manufacturing various plastic products. They are typically melted again and molded into shapes through processes like injection molding, extrusion, or blow molding.
Manufacturing Products: The plastic pellets are heated and molded into final products such as bottles, bags, containers, toys, and numerous other items.
Why are functional MRI is useful to Doctors
They show which parts of the brain are involved in specific activities.
Assuming the options are:
They can ease pain in patients.
They can reduce tumors in patients.
-> They show which parts of the brain are involved in specific activities.
They distinguish between the possible causes of a symptom.
Magnetic resonance imaging is a medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes of the body in both health and disease. MRI scanners use strong magnetic fields, magnetic field gradients, and radio waves to generate images of the organs in the body.
Which molecules would dissolve in water based on polarity? Select the 3 that apply.
A. CH4
B. C2H6
C. C6H6
D. CH3CH2 CH2 CH2 CH2 CH2OH
E. C5H10O5 apply
water interacts with polar substances such as -OH groups but not with non polar substance such as CH3. Based on polarity, D and E have high polarity and dissolve in water.
Answer: Option (D) and (E) are the correct answers.
Explanation:
Water is a polar solvent and it is known that like dissolves like. Hence, polar solutes easily dissolve in water.
For example, alcohols, amines etc are polar solvents.
Whereas hydrocarbons like methane, ethane, benzene etc have covalent bonding in their atoms. Hence, they are non-polar in nature due to which they are unable to dissolve in water or any other polar solvent.
Thus, we can conclude that out of the given options CH3CH2 CH2 CH2 CH2 CH2OH and C5H10O5 will dissolve in water based on polarity.
5) Which of the following statements describes the movement of air in general?
-from south to North
-from low pressure to high pressure
-from high pressure to low pressure
-from north to south
The best statement which describes the movement of air, in general, is that air moves from high pressure to the low pressure area. Hence, option C is correct.
What is Air?The atmosphere of Earth is referred to as air. There are several gases and microscopic dust particles in air. It is the transparent gas that all living things breathe. Its volume and shape are ambiguous. Since it is matter, it has mass and weight. Atmospheric pressure is produced by the air mass. In space, there is no air.
Approximately 78% of the gases in air are nitrogen, 21% are oxygen, 0.9% are argon, 0.04% are carbon dioxide, while there are extremely tiny amounts of many other gases. There is typically 1% or less water vapor present.
Animals need to breathe oxygen into the air in order to survive. When someone breathes, their lungs exchange carbon dioxide for oxygen in the blood.
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Which statement best describes the structure of covalent network solids? A. They are giant structures held together by weak forces of attraction. B. All the atoms are covalently bonded to other atoms to form a lattice-like structure. C. Several covalently bonded molecules form covalent bonds with each other. D. They consist of a network of atoms alternately bonded by covalent and ionic bonds.
Try the answer B
Hope this helps
Answer: Option (B) is the correct answer.
Explanation:
A covalent compound is a compound formed by sharing of electrons. And, in a covalent network solid atoms are bonded by covalent bonds in a continuous network that is extending throughout the material or solid.
This continuous arrangement of atoms are like a lattice.
For example, diamond is a covalent network solid in which carbon atoms are arranged in a continuous lattice like structure.
Hence, we can conclude that the statement all the atoms are covalently bonded to other atoms to form a lattice-like structure, best describes the structure of covalent network solids.
The chemical processes that occur within a cell are affected by many factors. Optimum cell function occurs within a narrow range of conditions.
Which combination of factors would curtail cell function?
I. pH
II. density
III. salinity
IV. temperature
The factors that can potentially curtail cell function include pH, density, salinity, and temperature. Changes in these factors can cause denaturation of proteins, cell dehydration, cellular damage, and decreased resource availability.
Explanation:The functioning of a cell is influenced to a great extent by its surrounding conditions, often falling within a narrow optimal range. The factors that can potentially impact and curtail cell function include the cell's pH, density, salinity, and temperature. Cells require specific physiological pH ranges for optimal function. Deviations can cause denaturation of cellular proteins and enzymes, leading to a loss in cell function. Similarly, high salt (salinity) concentrations can lead to cell dehydration. Cells function best at a body temperature of around 37°C. At higher temperatures, cells may get damaged or die. Similarly, cellular density also impacts function, with overcrowding leading to a decrease in resource availability thereby limiting function.
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pls help!! WILL VOTE BRAINIEST!!!
C is the right answer :)
what is common to the carbon cycle,the nitrogen cycle and the water cycle?
The carbon, nitrogen, and water cycles are all biogeochemical cycles that recycle essential elements through ecosystems, involving both living entities and environmental factors.
Common to the carbon cycle, the nitrogen cycle, and the water cycle is their role as biogeochemical cycles. These cycles are essential in recycling vital elements and compounds through both living (biotic) and non-living (abiotic) components of ecosystems. In each cycle, elements such as carbon, nitrogen, and water continuously flow between organisms and the environment, playing a crucial role in sustaining life.
For instance, the nitrogen cycle recycles nitrogen through the biosphere, essential for proteins and nucleic acids. Nitrogen becomes usable to plants and animals through processes like nitrogen fixation, which breaks down the strong triple bonds of nitrogen gas. The water cycle involves water changing states and moving between various reservoirs like rivers, oceans, and the atmosphere. Similarly, carbon is rapidly cycled through cellular respiration and photosynthesis, contributing to the carbon found in food chains. All these cycles demonstrate how interconnected the movements of elements are with the functions of the larger ecosystems.
How many trips has Earth made around the Sun in 8 mar years
The answer is; 15 years
It takes 687 days for mars to orbit the sun once. 8 mars years would, therefore, mean;
8 * 687 = 5496 days
The earth takes 365 days to orbit the sun once. Therefore, the earth will orbit the following number of times in 8 Mar years;
5496/365 = 15.058
Which is approximately 15 years
Which of the following uses a protein to move a molecule across a cell membrane without energy
I believe it would be option A. If it still doesn't answer your question, don't hesitate comment below. :)
Facilitated diffusion
Which of the following best explains why the sequence of amino acids affects a protein's shape?
the bonding within a protein depends on the sequence of amino acids
the molecular weight of a protein depends on the sequence of amino acids
the type of atoms within a protein depends on the sequence of amino acids
the number of cells within a protein depends on the sequence of amino acids.
I believe it is:
the bonding within a protein depends on the sequence of amino acids
Because proteins have multiple structures whether it is primary, secondary, tertiary, etc., and they vary based on the bonds such as dipeptide.
What happened to the giant landmass that Wegener described?
The pieces remained the same shape over time.
The pieces moved quickly to their current locations.
The pieces moved toward one another and created mountains.
The pieces broke apart and drifted away from one another over time.
Answer: The pieces broke apart and drifted away from one another over time.
The theory of continental drift was proposed by geophysicist Alfred Wegener in 1912. The theory describes the splitting of a large landmass Gondawana into different sub landmasses or continents which were drifted to location other than the place where the parent landmass was situated.The evidence of the continents are the part of large landmass comes from fossils obtained from fossils of plants and animals and similarities in the composition of the rocks.
Therefore, on the basis of the above information this can be concluded that the piece broke apart and drifted away from one another over time had happened to the giant landmass that Wegener described.
Answer:
What happened to the giant landmass that Wegener described?
A.The pieces remained the same shape over time.
B.The pieces moved quickly to their current locations.
C.The pieces moved toward one another and created mountains.
D.The pieces broke apart and drifted away from one another over time.
Explanation:
D.The pieces broke apart and drifted away from one another over time.
Why does an orbiting satellite's speed remain constant?
Why does an orbiting satellite's speed remain constant?
A) The satellite is programmed to remain at a constant speed.
B) The satellite will constantly change direction and speed as it orbits.
C) The gravity of the earth is a parallel force which only affects direction, and not speed.
D) The gravity of the earth is a perpendicular force which, affects direction and not speed.
Final answer:
An orbiting satellite's speed remains constant because gravity acts as a centripetal force, only changing its direction without affecting speed, a consequence of conservation of angular momentum and mechanical energy in a stable orbit free from atmospheric friction.
Explanation:
The reason an orbiting satellite's speed remains constant can be best explained by Newton's laws of motion and understanding of gravity. While it's true that satellites change direction as they orbit, the force of gravity, which is directed toward the center of the Earth, only affects the satellite's direction and not its speed when in a stable orbit. This happens because gravity acts as a centripetal force, effectively pulling the satellite inward to keep it in orbit, while the satellite's inertia keeps it moving forward. This results in a constant speed since the force of gravity does not do work on the satellite to change its tangential or orbital speed.
When analyzing the behavior of satellites with respect to their orbits, we observe that their orbital velocity decreases as they move to larger orbits, whereas the change in potential energy increases, which is evidence of the conservation of mechanical energy. The speed is greatest at the periapsis (closest point to Earth) and least at apoapsis (farthest point), as the conservation of angular momentum dictates that the product of radial distance and tangential speed must remain constant.
Satellites in orbit behave in the same way that natural satellites, like the Moon, do. If they are high enough to avoid atmospheric friction, they will maintain their orbits indefinitely without additional energy input, thanks to the balance between gravitational force and their inertial motion.
Jordan notices that the bottom part of a cliff is worn away.
Why is the cliff worn away the most near or under the level where the water is?
Option C I'd say.
Hope you find it helpful!
The Water erosion is most intense at the base of a cliff because it carries sediments and abrasives, causing undercutting and erosion.
The wearing away of the bottom part of a cliff, particularly near or under the water level, is primarily attributed to the erosive forces of water.
This phenomenon is commonly associated with processes such as hydraulic action, abrasion, and solution, collectively known as coastal erosion.
1. Hydraulic Action: Water exerts pressure on the cliff, especially during high-energy events like waves crashing against the base. The force of the water can penetrate cracks and weaknesses in the rock, leading to erosion.
2. Abrasion: Sediments carried by the water, such as sand and pebbles, act as natural abrasives. These particles can impact and wear away the cliff face, causing physical weathering and contributing to the erosion process.
3. Solution: Some rocks, particularly those containing soluble minerals like limestone, can be dissolved by the chemical action of water. Over time, this dissolution weakens the rock structure, leading to erosion.
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Which type of thinking uses creativity and yields solutions that are original and creative? A. directed B. undirected C. reproductive D. productive
Answer: Option (B) is the correct answer.
Explanation:
A thinking in which using the rational and conceptual frameworks we direct our thoughts is known as directed thinking.
Whereas undirected thinking is also known as creative thinking. In this thinking thoughts, creative ideas, images etc are used to develop solutions for the problems.
On the other hand, when a problem is solved with the help of previous experiences and what is already known to us is called reproductive thinking.
A productive thinking is a thinking in which a person solve problem using his insight or environmental interaction.
Thus, we can conclude that out of the given options undirected thinking uses creativity and yields solutions that are original and creative.
Answer:
Answer is D
Explanation:
:)
what is the definition of glycosis?
Choose all the answers that apply.
Choose all the answers that apply.
Eukaryotes _____.
are always multicellular
are always unicellular
may have evolved from prokaryotes
have membrane-bound organelles
have a true nucleus
are more primitive than prokaryotes
Jordan notices that the bottom part of a cliff is worn away. Why is the cliff worn away the most near or under the level where the water is?
The bottom part of a cliff is worn away primarily due to erosion by water, which exerts a physical force that breaks down the rock over time.
Explanation:Jordan notices that the bottom part of a cliff is worn away the most near or under the level where the water is. This phenomenon is largely due to the process of erosion, where water flow exerts physical force on the rock, gradually breaking it down and carrying away the particles. This can create smooth surfaces and stepped pools, much like the ones seen in Pant Glas, Scotland. Over time, these forces cause more wear at the lower levels of the cliff where water has consistent contact, leading to an undercutting effect and the formation of features such as the 'The Wave' in the Vermillion Cliffs. Similar processes are observable on Mars, where gullies change with the seasons, likely due to flowing water or sediment.
Final answer:
The bottom part of a cliff is worn away the most at the level where water is due to erosion, which is caused by the constant flow and pressure of water that cuts and shapes the rock over time.
Explanation:
Jordan notices that the bottom part of a cliff is worn away the most near the level where the water is. This is primarily due to erosion, a natural process by which water flow removes soil, rock, or dissolved material from a landscape and then transports it elsewhere. As the constant flow of water interacts with the base of a cliff, it can cut the rock smooth and create features such as small stepped pools, much like the patterns that are observed in 'The Wave' Formation of Vermillion Cliffs. Over time, this erosive action can significantly wear away the rock at the water level. This is particularly evident where flowing water, like rivers or waves, has consistent contact with the rock, resulting in the undercutting and weakening of the cliff base, which can lead to parts of the cliff above to collapse or crumble as well.
Where is your age represented on the tables and on the graphs
How the structure of a lipid influences the lipids function
Hi there,
The structure of a lipid influences the lipids function by A phospholipid has a charged head and an uncharged tail and lipids contain fatty acids and glycerol.
Lipids are excellent energy reserves.
Hope this helped :)
have a great day
Final answer:
The structure of lipids influences their function, with saturated and unsaturated fatty acids affecting membrane fluidity, phospholipids forming cell membranes due to their amphipathic nature, and steroids like cholesterol maintaining membrane fluidity.
Explanation:
The Structure-Function Relationship of Lipids
Lipids are a diverse group of compounds essential for various biological functions. The structure of lipids greatly influences their role within living organisms. One of the four major types of lipids is fatty acids, which can be saturated or unsaturated. Saturated fatty acids, due to their straight chains, can pack closely together and are typically solid at room temperature. In contrast, unsaturated fatty acids have one or more double bonds that create kinks in the chains, preventing tight packing and thus are usually liquid at room temperature. This structural difference affects the fluidity and flexibility of cell membranes.
Phospholipids have a phosphate group making their head polar (hydrophilic) and their tails nonpolar (hydrophobic), which allows them to form the lipid bilayer of cell membranes, providing a barrier and contributing to the membrane's fluid nature.
Another class of lipids is steroids, including cholesterol. The basic structure of a steroid is four interconnected rings of carbon atoms, which differ from the long chains of fatty acids. Cholesterol, for example, helps maintain the plasma membrane's fluidity by preventing the fatty acid chains from packing too closely in animal cells.
These structures enable lipids to carry out specific functions such as energy storage, insulation, and hormone production, demonstrating the critical relationship between the structure and function of lipids in living organisms.