Answer:
In scientific reasoning, a hypothesis is an assumption made before any research has been completed for the sake of testing. ... A theory on the other hand is a principle set to explain phenomena already supported by data.
Explanation:
The main difference between a hypothesis and a theory is that a hypothesis is a testable statement, and a theory is a well-supported explanation. Thus, the correct option is A.
What are Scientific theories?A Scientific theory may be characterized as a well-determined description of some significant features of the natural world, based on a body of certainty that has been repeatedly assured through observation and experiment.
The theories can transform themselves into laws when they gather sufficient evidence. While a hypothesis is a testable statement that needs sufficient evidence to be proved. A hypothesis is never turned into theories until they have some evidence to support the claim.
Therefore, the main difference between a hypothesis and a theory is that a hypothesis is a testable statement, and a theory is a well-supported explanation. Thus, the correct option is A.
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15. Proteins are super important because they contain
Answer:
Proteins are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body's tissues and organs.
Explanation:
Each gram of protein contains 4 calories. Protein makes up about 15 percent of a person's body weight. Chemically, protein is composed of amino acids, which are organic compounds made of carbon, hydrogen, nitrogen, oxygen or sulfur.
Answer:
amino acids
Explanation:
Protein contain amino acids, which play an important role in almost every system in your body.
what limts carrying capacity?
A:Energy
B:Water
C:Oxigen
D:Space
E:All of the above
Answer:
E. Energy
Explanation:
how does cell mitosis differ from cytokinesis
Answer:
Mitosis is the division of the nucleus, while cytokinesis is the division of the cytoplasm. They are both two stages in the cell cycle.
Explanation:
Researchers have found that mitochondria and chloroplasts in eukaryotic cells have their own DNA. This DNA is different from the DNA in a eukaryotic cell's nucleus. Chloroplasts and mitochondria use their own DNA and ribosomes to make some organelle-specific proteins.
Answer:
Mitochondria and chloroplast in Eukaryotic cells have their own DNA.
Explanation:
Researchers have found that mitochondria and chloroplasts in eukaryotic cells have their own DNA , they have their own DNA because Chloroplast and mitochondria are subcellular organelles that produces energy for the cells with their own genomes and genetic systems.
Therefore, when dna is replicated, it is transmitted to the daughter cells which produces cytoplasmic inheritance of traits and this is as a result of photosynthesis and respiration by the organelles Chloroplast and respiration.
What percent of cow carcasses are sent off to become pet food and other such things?
Answer: 50 percent
Explanation:
What is one observation that could be made to support the idea that two rock layers
are the same age?
A. Layers with different fossils
B. Layers of equal density
C. Layers made of the same chemicals
D. Layers with similar fossils
Answer:
D. Layers with similar fossils
Explanation:
Dating consists of ordering geological events according to the time they occurred, which ones occurred first, and which ones occurred latterly. This dating can be done by using the superposition geological principle. This principle states that in a horizontal unperturbed rocky sequence, the oldest layers or stratum are located in the bottom, while the newest ones are more superficially located. Sediments can be incrusted in horizontal layers or stratum. Fossils that are incrusted on these layers represent different ages of the stratum. Different stratum can give us information about the environment in the past. They keep information about the age and the conditions under which the sediments got deposited.
Some geological principles allow us to date, relatively, the age of different geological events in the past.
Sediment layers place in a temporal sequence, let us know that the older layers are located in an inferior position concerning the newer layers. Hence, fossil species placed in more inferior layers are supposed to be older than fossil species found in more superficial layers.
In this sense, those layers or stratum that exhibit the same fossils are believed to be the same age-old.
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Chlorophyll a is a critical pigment in plants that not only gives many of them their characteristic green color, but is also important in the process capturing light energy from the sun in order to drive the process of photosynthesis.
What is the most likely cell structure in which chlorophyll a would be located?
Choose 1 answer:
(Choice A)
A
Vacuole
(Choice B)
B
Golgi body
(Choice C)
C
Chloroplast
(Choice D)
D
Mitochondria
Answer:
It would be c
Explanation:
I remember this question when I took floral design.
Answer:
Chloroplast
Explanation: Chloroplasts are the site of photosynthesis, and thus, must contain the chlorophyll a pigment. Additionally, part of the reason they're called "chloroplasts" is because of the presence of the chlorophyll a pigment!
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In anatomical position, which term locates the little finger in relation to the thumb?
Answer:
pinky
Explanation:
What trend has been observed in the fossil record of horses regarding the length of their limbs?
Answer:
The correct answer is : they have generally increased in length.
Explanation:
Fossil records of horses clearly showed that the early horse family was small in body size with short legs which was adapted to the wooded area at that time.
During the period of time horse family adapted to the change according the environment and habitat which was changed from wooded area to grass land. They have increased in length and size of their legs become longer during evolution.
Thus, the correct answer is : they have generally increased in length.
A euglena is a unicellular organism. Explain how the euglena's cell parts help it stay alive.
Explanation:
Euglena are unicellular organisms classified into the Kingdom Protista, and the Phylum Euglenophyta. All euglena have chloroplasts and can make their own food by photosynthesis. They are not completely autotrophic though, euglena can also absorb food from their environment; euglena usually live in quiet ponds or puddles.
Euglena move by a flagellum (plural ‚ flagella), which is a long whip-like structure that acts like a little motor. The flagellum is located on the anterior (front) end, and twirls in such a way as to pull the cell through the water. It is attached at an inward pocket called the reservoir. Color the reservoir grey and the flagellum black.
The Euglena is unique in that it is both heterotrophic (must consume food) and autotrophic (can make its own food). Chloroplasts within the euglena trap sunlight that is used for photosynthesis, and can be seen as several rod like structures throughout the cell. Color the chloroplasts green. Euglena also have an eyespot at the anterior end that detects light, it can be seen near the reservoir. This helps the euglena find bright areas to gather sunlight to make their food. Color the eyespot red.Euglena can also gain nutrients by absorbing them across their cell membrane, hence they become heterotrophic when light is not available, and they cannot photosynthesize.
The euglena has a stiff pellicle outside the cell membrane that helps it keep its shape, though the pellicle is somewhat flexible and some euglena can be observed scrunching up and moving in an inchworm type fashion. Color the pellicle blue.
In the center of the cell is the nucleus, which contains the cell's DNA and controls the cell's activities. The nucleolus can be seen within the nucleus. Color the nucleus purple, and the nucleolus pink.
The interior of the cell contains a jelly-like fluid substance called cytoplasm. Color the cytoplasm light yellow. Toward the posterior of the cell is a star-like structure: the contractile vacuole. This organelle helps the cell remove excess water, and without it the euglena could take in some much water due to osmosis that the cell would explode. Color the contractile vacuole orange.
The cell parts of euglena help it stay alive by the fact that they possess chloroplasts which facilitate them to make their own food by photosynthesis.
What is a Unicellular organism?A unicellular organism may be characterized as a type of organism that significantly consists of a single cell, unlike a multicellular organism that consists of multiple cells. This single cell carries out all of the functions needed by the organism.
Euglena possesses a mixed type mode of nutrition as it can also absorb food from its environment. They move through a flagellum which is a long whip-like structure that acts like a little motor and provides movement.
Chloroplasts within the euglena trap sunlight that is used for photosynthesis, and can be seen as several rod-like structures throughout the cell. In the center of the cell is the nucleus, which contains the cell's DNA and controls the cell's activities.
Therefore, the cell parts of euglena help it stay alive by the fact that they possess chloroplasts which facilitate them to make their own food by photosynthesis.
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Before DNA is replicated, it reads AGATCGAGT. An external factor causes a mutation to the sequence, and it now reads: AAATCGAGT.
How would the amino acid sequence produced by the mutant strand compare to the amino acid sequence made by the original strand?
codon chart
Group of answer choices
Only one amino acid in the sequence would change.
More than one amino acid in the sequence would change.
The amino acid sequence would be shorter.
The amino acid sequence would remain unchanged.
Answer: only one amino acid in the sequence changes
Explanation: if you change both sequences given to rna sequences in the first one all the amino acids you get are serine. in the second sequence of you change them to rna then do the chart they all are serine but one which is phenylalaine.
What is a producer that can be found in the Hawaiian atoll reef?
if a creature dies without reproducing, how can it help transfer its genes to the next generation? (3-5 sentences please!)
Answer:
it can help to transfer its genes by people taking its DNA and duplicating, and putting it into another animal.
Explanation:
Hybrid inviability and hybrid infertility are two examples of:________.
Answer:
I believe that these two are examples of gametic isolation.
Explanation:
I believe this is the correct answer, however i dont really remember i took this course last year.
Answer:
gametic isolation
Explanation:
HELPPPP, i dunno this one!! i need help asap
Answer:
It's adaption, but I don't see it, it could also be behavior. I dunno about this one.
How do scientists critically analyze experimental results?
Soon afterwards, Sammy developed a severe intestinal infection. A large portion of his lower intestine had to be removed. It was replaced with an elastic tube made of silicon. Sammy was able to eat almost all the same foods he ate before surgery. Is Sammy Alive? ☐ Yes ☐ No Reason:
give an example of a hypothesis not mentioned
Answer:
`12
Explanation:
The structure of amino acids consists of a fatty acid, carboxyl group, and a side chain bonded to the central carbon atom a fatty acid, monosaccharide, hydrogen atom, and a side chain bonded to the central carbon atom an amino group, carboxyl group, hydrogen atom, and a side chain bonded to the central carbon atom an amino group, monosaccharide, hydrogen atom, and a side chain bonded to the central carbon atom
Answer:
THE ANSWER IS C
Explanation:
The structure of amino acids consists of a fatty acid, carboxyl group, and a side chain bonded to the central carbon atom a fatty acid, monosaccharide, hydrogen atom, and a side chain bonded to the central carbon atom an amino group, carboxyl group, hydrogen atom, and a side chain bonded to the central carbon atom an amino group, monosaccharide, hydrogen atom, and a side chain bonded to the central carbon atom
A basic amino group (NH2), an acidic carboxyl group (COOH), and an organic R group (or side chain) that is specific to each amino acid make up an amino acid, an organic molecule. Alpha-amino [alpha-amino] carboxylic acid is referred to as an amino acid informally.
What is an amino acid?All living organisms employ amino acids as building blocks for proteins. Twenty distinct amino acids are required by your body for proper operation. The term "essential amino acids" refers to nine of these amino acids. You must ingest essential amino acids through the food you eat. Beef, eggs, and dairy products are just a few examples of meals that contain essential amino acids.
The building components of protein are amino acids. Long strands of amino acids make up proteins. Numerous distinct proteins in your system each perform vital functions. Every amino acid sequence of a protein is unique. The protein's form and functionality in the organism are determined by its sequence.
Therefore, amino acids have an amino group, a carboxyl group, and a side chain.
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DOES SOMEONE KNOW THE ANSWERS TO THESE IF SO I NEED HELP PLEASE........
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An organism ingests a toxin that damages the mitochondria of its cells.
Which function of the mitochondria might be inhibited in the cell?
Choose 1 answer:
(Choice A)
A
Converting energy stored in sugar to ATP
(Choice B)
B
Producing sugar from sunlight
(Choice C)
C
Disposing of damaged cell parts
(Choice D)
D
Creating proteins
Answer:
A. Converting energy stored in sugar to ATP
Explanation:
Mitochondria are main sites of aerobic respiration. They are miniature biomolecular factories where food stuffs or respiratory substrates are completely oxidised to carbon dioxide and water. The energy liberated in the process is stored in the form of ATP.
Because of formation of ATP mitochondria are called power house of the cell.
Does food have cells
Answer:
yea
Explanation:
True or False: The cells from the "Area of Cell Division" allow the root to grow longer?
Answer:
I'm pretty sure it is true.
Explanation:
What factors lead to ecosystem changes such as an increase in pollution global warming and coral reef bleaching?
Classify A large bar of solid gold is melted into liquid. The liquid is then poured into molds to make a number of gold coins. Was this a chemical or physical change?
Answer:
It is still identified as the same substance. In this case, since melting the gold bar is a change that takes place when the solid turns into a liquid, it undergoes a physical change.
Explanation:
This is a physical change. When solid gold melts into a liquid and is poured it will be a physical change.
What is a physical change?There are two types of changes such as physical change and chemical change. In a physical change, there is no change in molecular composition.
In chemical changes, the molecular composition of a substance will change. When gold is turned into a liquid it will melt. This is called a physical change.
In a physical change, the chemical composition of a substance remains the same. The atoms rearrange themselves in physical change.
Therefore, This is a physical change. When solid gold melts into a liquid and is poured it will be a physical change.
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This key organelle holds the cell's genetic material, and dictates which proteins the cell produces.
Answer:
nucleus
The function of the nucleus is to regulate gene expression, including controlling which proteins the cell makes. In addition to DNA, the nucleus contains a thick liquid called nucleoplasm that is similar in composition to the cytosol found in the cytoplasm outside the nucleus
Explanation:
Type of soil that forms in grasslands
Answer:
Mollisols
Explanation:
The soil of the temperate grasslands is deep and dark, with fertile upper layers. It is nutrient-rich from the growth and decay of deep, many-branched grass roots. The rotted roots hold the soil together and provide a food source for living plants.
Answer:
Mollisols
Explanation:
Because these temperate grasslands have cold winters, and warm summers, and have medium to low precipitation. They form in areas that are too dry to be forested, but too wet to be desert. Most of the prairie soils are called Mollisols (latin for soft), because of their deep, dark layer of topsoil.
How are DNA and RNA related to proteins
Functionally, RNA utilises the protein-encoding information to enable the cell to produce the specific protein, whereas DNA preserves the information.
What is protein synthesis?The process through which cells create proteins is referred to as protein synthesis. The first step is transcription, and then the second step is translation. The process of moving genetic instructions from DNA to messenger RNA (mRNA) in the nucleus of a cell is referred to as transcription. Initiation, elongation, and culmination are the three stages that make up this process.
In a functional sense, DNA is responsible for maintaining the information that codes for proteins, whereas RNA is responsible for putting that information to use in order to permit the cell to synthesize the specific protein.
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Which type of microscope can be used to view living specimen?
Answer:
Among the different types of microscopes, the Electron Microscope(EM) is a powerful microscope available and used today, allowing researchers to view a specimen at nanometer size. The transmission electron microscope(TEM), the first type of EM, is capable of producing images 1 nanometer in size.
Explanation:
The type of microscope that can be used to view living specimens is the electron microscope.
What is a Microscope?A Microscope may be defined as a type of laboratory instrument that can be utilized in order to examine objects that are too small to be visualized by the unaided eye. It is used to observe numerous living specimens like cells, tissues, etc.
There are numerous microscopes available nowadays. Like a light microscope, compound microscope, scanning electron microscope, transmission electron microscope, etc. But the Electron Microscope(EM) is a powerful microscope with higher resolution power.
The transmission electron microscope is a type of the first type of electron microscope which is capable of obtaining images of living specimens that are 1 nanometer or less in size.
Therefore, the type of microscope that can be used to view living specimens is the electron microscope.
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Which characteristic of a protein may change during a dna mutation?
Answer:
Sequence of amino acids by the ribosome are the characteristic of a protein may change during a DNA mutation.
Answer:
i think it'll be the shape of it that will change during a DNA mutation.
Explanation:
