The difference between a theory and a Scientific Theory is that:
OA. A theory is a guess, while a Scientific Theory is an educated guess.
B. There is no difference.
OC. A theory is supported by evidence and a Scientific Theory is a guess.
D. An idea must be tested and supported by evidence before it can become a Scientific Theory.

The flexibility of spider silk determined by the structure of its molecules is quite strong.

The components that make up spider silk are what give it its flexibility. Proteins called fibroins, which are made up of amino acids organised in a certain sequence, make up spider silk. The arrangement of amino acids in fibroin proteins results in a helical structure, which is held together by hydrogen bonds between the amino acids.

The fibroin protein chain's exact arrangement of amino acids and hydrogen bonds produces a special blend of strength and flexibility. The silk is flexible enough to stretch and absorb energy without breaking and robust enough to resist significant stress. Spider silk is a fantastic material for many uses, including clothes, medical equipment, and even bulletproof vests, thanks to its unique mix of qualities.

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Salinity increases during the low tides. Fish can drink saltwater and eliminate the salt through their gills. Fish also use their kidneys and ion pumps, such as a sodium/potassium pump, to excrete extra salt.  The solubility of oxygen and other gases will decrease as temperature of the water increases.

What do you mean by salinity?

Water bodies with a high amount of salt dissolved in them are referred to as "saline water." It is frequently stated as g/L or g/kg.

Along with temperature and pressure, salinity is a thermodynamic state variable that affects the physical characteristics of water, including its density and heat capacity. Many aspects of the chemistry of natural waterways and of biological activity within them are significantly influenced by salinity.

Due of the low moisture content, the succeeding tidal cycles' flooding is anticipated to dramatically reduce the salt concentration there. Due to flooding at high tides, the near-surface pore-water salinity tends to dip to saltwater salinity in the presence of evaporation and rise during low tides.

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Solar energy is a renewable form of energy and is therefore more advantageous to use it over the fossil fuels in order to produce electricity.

The correct option is option D.

Solar energy is basically a renewable source of energy as the Sun will always continue to produce energy which makes it both a sustainable as well as a reliable source of energy when compared to fossil fuels which are non-renewable and will therefore run out with time.

Solar energy is also a very clean form of energy as it does not cause pollution unlike the fossil fuels and therefore it is more advantageous to use solar energy for producing electricity.

Hence, the correct option is option D,

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Answer:

D. Solar energy is a renewable resource.

Explanation:

I took the test and also it is the only positive thing said about solar energy when looking at the choices.

Answer: It is important that cells have a "control system" because without it cells would either divide too fast or cause tumors to grow (cancer), or divide too slow and not be able to perform their cellular functions which is why the cells are controlled.

Answer:A phenotype is an individual's observable traits, such as height, eye color, and blood type. The genetic contribution to the phenotype is called the genotype. Some traits are largely determined by the genotype, while other traits are largely determined by environmental factors.

Explanation:

Answer:

What is the definition of a phenotype?

Explanation:

The sum of an organism's observable characteristics is their phenotype. A key difference between phenotype and genotype is that, whilst genotype is inherited from an organism's parents, the phenotype is not. Whilst a phenotype is influenced the genotype, genotype does not equal phenotype.

Answer: The options are not given, here are the options.

A) No the DNA in circulating erythrocytes ins needed to help transport O2 through the capillaries

B) No circulating erythrocytes contain DNA.

C) Yes DNA is responsible for cell division in most cells

D) Yes circulating erythrocytes carry DNA nutrients through the capillaries

The correct option is B.

No circulating erythrocytes contain DNA.

Explanation:

Erythrocytes or red blood cells is a biconcave disc that contain haemoglobin which help to carry oxygenated blood in the body.

Circulating erythrocytes do not contain dna because they lack nuclei and organelles, cannot synthesize any RNA, therefore cannot divide and have limited repair capabilities.

Because they cannot carryout protein synthesis, no virus can evolve and invade the red blood cells.

Answer:

d

Explanation:

cause its d

According to the given question, you can determine that both species of bird occupy separate niches but are still competing for some resources. Thus, the correct option is C.

Habitat may be defined as the set of environmental conditions which are favorable for the survival of an organism (species).

According to the data, the carrying capacity of both species of birds is reduced significantly.

This demonstrates that both species do not occupy the same niches but are still competing for some essential resources like the selection of reproductive partners, survival strategies, etc.

Therefore, the correct option for this question is C.

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Answer:

A. The cell theory is the answer but I am not sure

Answer:

According to the WebMD, seafood, lean beef (including tenderloin, sirloin, and eye of round) and lean pork, eggs, beans, and low-fat dairy products have the highest protein content.

Answer:

A thread-like structure of DNA that carries genes.

Explanation:

Answer:

A chromosome is a thread-like structure that contains all of the genes inside of your body. Chromosomes also are part of the nucleus.

Explanation:

Answer:

its B but there is small possiblity for D to be the answer.

Answer:

90 percent

Explanation:

Based on average estimated juvenile and adult survival rate for each species

It is the principle of evolution that those individuals compete better for limited resources like food, water, nutrients, etc. are able to survive and reproduce in the given habitat.

Adaptation may be defined as the process of modifying or adjusting the organisms to their environment in order to enhance their possibilities of survival in that environment.

If the organism is better in competition, it will definitely survive in its environment and pass its traits on to the offspring through the process of reproduction.

Competition is directly related to adaptations. If an individual competes better, it will definitely adapt itself to the given sets of environments.

Therefore, it is well described above.

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Specific heat is defined by how much energy (in this case, heat) a specific object can hold/lose. In chemistry, the specific heat for water is 4.184 Joules per gram Kelvin. That means it takes 4.184 Joules of energy (heat) per gram (1 g) of water to gain heat by 1 Kelvin.

We can take specific heat and apply it to living organisms. We know that organisms must maintain homeostasis. A part of homeostasis is to maintain internal temperatures. Let's take the human body as an example organism. We have water inside our bodies. The specific heat of water is considered very high compared to other materials; this means that it takes a lot of energy to heat up water. The specific heat of water allows our bodies to resist changing temperatures.

Answer:

liver

Explanation:

The liver produces bile, a solution that helps you digest fats. The gallbladder stores bile. As fatty food enters the upper portion of your small intestine (the duodenum), the gallbladder squeezes bile into the small intestine through the bile ducts.

The roles of observations and hypothesis in science are:

Observation and hypothesis are the steps of the scientific method used to test and acquire knowledge.

Thus, the correct answer is -

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Answer:

HERE

Explanation:

One resource used for energy production that can impact the natural resource of ozone layer depletion is coal. Burning coal releases pollutants like sulfur dioxide, nitrogen oxides, and mercury into the atmosphere, which can contribute to the formation of smog and acid rain. These pollutants can also react with other chemicals in the atmosphere to break down ozone molecules, contributing to the depletion of the ozone layer. So, the way humans use coal as an energy resource can have a negative impact on the ozone layer and the environment.

As human populations increase, the demand for resources such as food, water, and energy also increases.

Biodiversity refers to the variety of life on Earth, including the variety of species, ecosystems, and genetic diversity within species.

Human population growth and resource use have a significant impact on biodiversity. This leads to habitat destruction, pollution, and climate change, all of which have negative impacts on biodiversity.

Thus, human population growth and resource use impact biodiversity by causing habitat destruction, pollution, and climate change.

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While the tectonic plates are moving in relation to one another, they are in contact with one another. A convenient route for magma to reach the surface can be created by the movement of faults at plate borders.

A column of extremely hot magma known as a mantle plume is another place where volcanoes can form. It is possible for this to occur far from plate borders. It is also referred to as a "hot spot" or an "intraplate. The crust melts and thins due to heat from the mantle plume, which results in volcanic activity at the surface. The sequence of volcanoes known as the Hawaiian Islands was created by the presence of a hot spot in the Centre of the Pacific Plate. Magma rises and erupts as lava on the ocean floor as a result of the Hawaiian hot spot. A volcano forms when superheated magma rises through the mantle melts the crust above it and flows to the surface as a result of the movement of the tectonic plate. Shield volcanoes, which are more commonly created with 'runny' lava and have a flatter, less cone-like appearance, are hotspot volcanoes.

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No, Europeans brought horses to North America later in time.

We feel the inside of the elbow as we lift a book. We should feel a strong cord. This cord is known as Oblique cord.

The oblique cord is a ligament which is present between the ulnar and radius bones in the forearm region near the elbow. Oblique cord takes the form of a small, flattened band, which is extending downward and lateralward, from the lateral side of the ulnar bone tuberosity at the base of the coronoid process to the radius of a little below the radial tuberosity. The fibers in this cord runs in the opposite direction to those of the Interosseous membrane of the forearm region of the hand.

The oblique cord may simply be defined as an additional tie which is between the radius and ulna of the hand which is aiding other soft tissue structures such as the annular ligament and interosseous membrane. Additionally, the oblique cord may also prevent the anterior shearing of the proximal radius under the extreme compressive loads.

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The process of Glycolysis is a catabolic process  in which two molecules glucose goes through a ten- step pathway and yield two molecules of pyruvate . It is a major part of carbohydrate metabolism .

Mechanism Of Glycolysis

The glycolysis is also known as EMP pathway and it is involved in both aerobic and anaerobic conditions .There are two phases in the mechanism of glycolysis in which 5 reactions takes place in each phase and the process of glycolysis takes place in cytosol

Preparatory phase refers to the  generation of two molecules of  glyceraldehyde 3-phosphate from one molecule of glucose which further goes into the payoff phase . In this phase two molecules of ATP are used and two regulatory enzymes were involved in this reaction .

Payoff phase refers to the further break down of two molecules of glyceraldehyde3-phosphate to two molecules of pyruvate . In this phase four molecules of ATP and two molecules of NADH are generated . In this phase only one regulatory enzyme is involved which is the breakdown of PEP to pyruvate  .

Both the phases of glycolysis takes place in the cytoplasm and there are  three enzymes that involved in regulating the glycolytic pathway .This process is also known as the catabolic process .

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Answer:

The correct answer is - 3 × 10⁻²

Explanation:

first find LKo = length of BDNA/ 10.5 bp/turn

= 4200/10.5

= 400

now calculate Δ LK= LK - LKo

ΔLK = 412-400

ΔLK = 12

now, superhelix density  = ΔLK/LKo

⇒ 12/400 = 0.03

= 3×10⁻²

Thus, the correct answer is - 3 × 10⁻²

Answer:

The answer is C.

Explanation:

Answer:

Oxygen and Carbon Dioxide

Explanation:

Answer:

Oxygen and suger

Explanation:

You might want to double check though

Answer:

ligament bcos ligament heal before bone

A ligament tear is an injury caused by an extreme motion, like a forceful twisting of a joint. A tear usually causes immediate pain and perhaps even a "pop" sound at the site of injury when it occurs. Depending on the severity of the injury, the affected site may become unstable.

Ligaments are elastic bands of tissue that connect bones to each other and provide stability and strength to the joint. The four main ligaments in the knee connect the femur (thighbone) to the tibia (shin bone) and include the following: Anterior cruciate ligament (ACL).

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Answer:

Genes from both parents were recessive

Explanation: