+Control group is used as a standard reference for comparing treated groups. Thus, option c is correct.
What is a control group?Control group is important in a study as it makes a useful comparison of the study groups. Control group is kept constant.
In any study, two groups are included: One is the control group which is not under the subject of any treatment whereas the other is study group on which hypothesis of the study is tested by including independent variables.
Control groups are important in finding clinical investigations where the effect of any drug or treatment is compared in control group that is constant and in the study group which contains a part of treatment.
Thus, for every study, inclusion of control group is must.
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help asap
Which one of the following statements about organelles in eukaryotic cells is correct?
Responses
All the organelles have the same function
Organelles perform specific functions in eukaryotic cells
Plant and animal cells share exactly all the same organelles
There are only three types of organelles in eukaryotic cells
Answer: Although each organelle performs a specific function in the cell, all of the cell's organelles work together in an integrated fashion to meet the overall needs of the cell.
Explanation:
which of the following is not a requirement to be considered an organism shelter, parents, food, or DNA”
Answer: Parents
Explanation: not every organism needs parents to survive
PLEASE ANWSER ASAP Television crime shows often paint a misleading picture of how forensic science works. What is something that happens on a television crime show that is NOT likely to happen in real life? A. Evidence is analyzed very quickly and accurately. B. Scientists spend time working in actual labs. C. Individual scientists stay mainly in one area of a lab. D. Forensic scientists are asked to testify in court cases.
The one that is not likely to happen in real life is that evidence is analyzed very quickly and accurately. The correct option is A.
What is forensic science?Forensic science is an important component of the criminal justice system.
Forensic scientists examine and analyze evidence from crime scenes and other locations to produce objective findings.
These can aid in the investigation and prosecution of criminal perpetrators or clear an innocent person of suspicion.
While television shows frequently depict CSI agents finding a bodily fluid, such as blood, testing it, and then locating a suspect in a database in a matter of (apparently) hours, in reality, the process is much slower.
Thus, the correct option is A.
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This table shows the codons found in messenger RNA. Using this information, what sequence of nucleotides in the template strand of DNA could code for the polypeptide sequence Phe-Ser-Gln?
UUC-UCU-CAA
AAG-AGA-GTT
TTC-TCT-CAA
AAG-AGA-GUU
Answer: rna: ribonucleic acid, a nucleic acid present in all living cells. Its principal role is to act as a messenger carrying instructions from DNA for controlling the synthesis of proteins, although in some viruses RNA rather than DNA carries the genetic information.
Explanation:
Sucrose is a _____.
a. polysaccharide
b. starch
c. monosaccharide
d. disaccharide
Answer:
Sucrose is a disaccharide
Explanation:
Sucrose, a disaccharide, is a sugar composed of glucose and fructose subunits. It is produced naturally in plants and is the main constituent of white sugar. It has the molecular formula C. 12H. 22O.
Sucrose is a disaccharide. Therefore, option D is correct.
What are disaccharides?When two monosaccharides (simple sugars) are linked together by glycosidic linkage, a disaccharide (also known as a double sugar) is created. Disaccharides are soluble in water.
Disaccharides, like other carbohydrates, are made up of hydrogen, carbon, and oxygen. The ratio of hydrogen to oxygen atoms in disaccharides is frequently 2:1, which is why they are also known as carbon hydrates. Disaccharides have the typical chemical formula C12H22O11.
Sucrose, lactose, and maltose are three examples that are typical. Sucrose, which is formed following photosynthesis in green plants, consists of one molecule of glucose and one of fructose bonded via an α-,β-linkage. Thus, option D is correct.
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Im not sure what to pick! Please helpoo
Answer: the first one trust and tell me if i get it right
Explanation:
HELP PLEASE WILL GIVE U 5 STARS
A research study on twins suggests that autism spectrum disorder (ASD) has a heritability estimate (h2) of 85%.
(a) First, how should we interpret this result? (1 pt)
(b) Second, list at least one limitation of heritability estimates? (1 pt, bullet point OK)
1. The cell membrane plays an essential role in the life of the cell. How does the cell membrane help maintain the health of the
cell?
The cell membrane can govern the processes of waste removal and bringing in necessary supplies by regulating what enters and leaves the cell.
Cells produce the waste molecule carbon dioxide during the process of cellular respiration. Due to the high concentration of carbon dioxide within the cell, it diffuses out of the cell and into the bloodstream (lower concentration). Carbon dioxide is transported by the blood to the lungs, where it can enter the air sacs and be expelled.
The cells require additional ingredients. Glucose is required by cells to supply energy. Through channel proteins in the membrane, glucose can pass from the bloodstream, where it is more concentrated, into cells, where it is less concentrated. This process is called facilitated diffusion.
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Enzymes are proteins capable of recognizing and binding to very specific small molecules, such as glucose. Which level of protein structure most directly leads to this binding specificity?.
Enzymes are proteins capable of recognizing and binding to very specific small molecules, such as glucose. The tertiary structure of protein leads to this binding specificity. The correct answer is option(c).
The three-dimensional structure of proteins is a result of the tertiary structure of the protein. The outer functional groups of a protein are visible on the exterior because of the protein's three-dimensional structure. An interaction between a protein and other molecules is made possible by these functional groups.
Proteins can acquire a very specialized structure because of the tertiary structure. The precise region of a protein called an enzyme known as the "active site" where a specific molecule can fit is known as an enzyme. The active site is in charge of binding particular molecules that can only fit into a particularly active site.
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The complete question is:
Enzymes are proteins capable of recognizing and binding to very specific small molecules, such as glucose. Which level of protein structure most directly leads to this binding specificity?
PrimarySecondaryTertiaryWhat organelle of the endomembrane system breaks down debris, food, and old cell parts with special dismantling enzymes?
Answer:
so your answer is this Lysosomes .about your answer In animal cells, the lysosomes are the cell's “garbage disposal.” Digestive enzymes within the lysosomes aid the breakdown of proteins, polysaccharides, lipids, nucleic acids, and even worn-out organelles. how it is helpful
Microscopic structure within a cell such as lysosome that carries out individual cell functions is a?
Organelles are the microscopic structures that perform the different functions inside the cell.
What are lysosomes?Lysosomes are film encased organelles that contain a variety of catalysts equipped for separating a wide range of natural polymers — proteins, nucleic acids, starches, and lipids. Lysosomes capability as the stomach related arrangement of the cell, serving both to corrupt material taken up from outside the cell and to process out of date parts of the actual cell.
In their most straightforward structure, lysosomes are imagined as thick circular vacuoles, however they can show extensive variety in size and shape because of contrasts in the materials that have been taken up for processing. Lysosomes subsequently address morphologically assorted organelles characterized by the normal capability of corrupting intracellular material.
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Which of the following is not a function of membrane proteins?
O act as carrier molecules for various solutes
O cell nutrient
O act as anchors or stabilizers for the cell membrane
O regulate the passage of ions
O bind to ligands
Answer:
Cell nutrient is not function of a membrane proteins
what is the probability that a group of five offspring will be composed of two plants with green seeds and axial flowers, one plant with green seeds and terminal flowers, one plant with yellow seeds and axial flowers, and one plant with yellow seeds and terminal flowers?
5% is the probability that a group of five offspring will be composed of two plants with green seeds.
What is population?The number of times a repeated event occurs in a given amount of time is known as its frequency. It is also sometimes called "temporal frequency" to stress the contrast to "spatial frequency" and "ordinary frequency" to underline the contrast to "angular frequency." Hertz (Hz), which is equal to one (event) per second, are the units used to express frequency. The reciprocal of frequency, the period is the length of time occupied by one cycle in a repeating event.
The period, T—the space between beats—of a heart beating at a frequency of 120 beats per minute (2 hertz), for instance, is half a second (60 seconds divided by 120 beats). Science and engineering employ frequency as a key characteristic to define the temporal scale.
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How does tetanic contraction of muscles help to lift objects heavier than our body weight?
The tetanic contraction of muscles help to lift objects heavier than our body weight by generating force, overcoming resistance.
What is muscle?Muscle is defined as group of tissue combined together in order to form muscles and muscles are the structure maker of the body it means it provide proper structure to the body.
Muscle contraction has been defined as an action potential that travels along with the nerves to the muscle. The beginning of the muscle contraction occurs with signal generated from the nervous system.There are mainly two types of muscle contraction and the situation occur when a muscle contracts and the change in size takes place.
Therefore, The tetanic contraction of muscles help to lift objects heavier than our body weight by generating force, overcoming resistance.
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a series of enzymes catalyze the reaction x to y to z. product a binds to the enzyme that converts x to y at a position remote from its activation site. the binding decreases the activity of the enzyme. what is substance a?
An allosteric inhibitor,Product A binds to the enzyme that converts X to Y at a position remote from its active site. This binding decreases the activity of the enzyme. With respect to the enzyme that converts X to Y, substance.
To catalyze a response, an enzyme will clutch on (bind) to at least one or greater reactant molecules. These molecules are the enzyme's substrates. In a few reactions, one substrate is damaged down into a couple of products. In others, substrates come collectively to create one large molecule or to switch pieces.
Enzymes catalyze reactions through reducing the activation power vital for a response to occur. The molecule that an enzyme acts on is referred to as the substrate. In an enzyme-mediated response, substrate molecules are changed, and product is formed.Oxidation and reduction. Enzymes that perform those reactions are referred to as oxidoreductases. For example, alcohol dehydrogenase converts number one alcohols to aldehydes.
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if a marine fish is placed in a fresh water aquarium will the fish be able to survive
Shearing occurs when crustal rock is pushed in two opposite, horizontal directions
true <-- maybe true
false
Answer:
yes this is true, this process is also known as strike slip faults
(sry it took me forever to answer lol)
due to a major flood, a dam broke, altering the course of a river. a population of ground squirrels became separated due to the river's change of course. over time, the divided population developed new adaptations and eventually created separate species. this is an example of:
This is an example of sympatric sepeciation .Takes place while there aren't anyt any bodily boundaries stopping any contributors of a species from mating with another, and all contributors are in near proximity to at least one another. A new species, possibly primarily based totally on a distinctive meals supply or characteristic, appears to expand spontaneously.
A shape of speciation in which a brand new species evolves from a unmarried ancestral species whilst inhabiting the identical geographic region. Sympatric speciation is greater not unusualplace in flora. For instance, determine flora produce offspring which might be polyploid
Sympatry is the time period used to explain populations, varieties, or species that arise withinside the identical region on the identical time.
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If you mix 172 grams in water and bring it to a final volume of 1,078 ml, what will be the concentration of the resulting solution in g/l? answers cannot contain more than one decimal place.
159.6g/l is the concentration of the resulting solution in g/l
Mass = 172 grams
Final volume = 1,078 ml (convert this to litre)
1000 ml = 1 l
1,078 ml = 1.078l
Initial concentration in g/ml = 172g / 1078ml
Since concentration is given as;
C = n*V
Where c = concentration (g/l)
n = number of moles (grams)
v = volume (litres)
Thus, if 172g is dissolved in 1078 ml
Xg would be dissolved in 1000 ml
By cross multiplication,
1078 * Xg = 172 * 1000
Xg = 172,000/ 1078
Xg = 159.56 g/l
Hence, the concentration in g/l to 1 d.p is 159.6 g/l
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You arrive on the scene with the code team. High-quality cpr is in progress. An aed has previously advised "no shock indicated. " a rhythm check now finds asystole. After resuming high-quality compressions, which action do you take next?.
You establish IV or IO access after resuming high-quality compressions.
Asystole is also known as flatline and it is the absence of electrical and mechanical activity in the heart occurring in cardiac arrest patients. When out of the hospital IO or IV access are advised to restore the patient in the kind of circumstance illustrated by the question. Intravenous (IV) cannulation is a venous access procedure that involves inserting a cannula into a vein.
Venous access provides for blood sample as well as hydration, parenteral nutrition, and blood product delivery. On the other hand, Intraosseous (IO) parenteral access is quick and simple, but intravenous (IV) access might be challenging. When IV access cannot be gained quickly, IO access is now suggested for patients experiencing cardiac arrest outside the hospital.
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3 ways how each of the atmosphere, lithosphere and hydrosphere can be damaged by environmental pollutants
The three ways by which the atmosphere, lithosphere, and hydrosphere can be damaged are pollutant emissions, particulate matter, and combustion appliances.
How may environmental pollutants harm the lithosphere, hydrosphere, and atmosphere?Solid, liquid, and certain gases that are suspended in the air are the main contributors to air pollution. These gases and particles can come from factories, dust, pollen, mold spores, volcanoes, wildfires, and vehicle and truck emissions. Aerosols are solid and liquid particles that are suspended in our air.
Pollutant emissions into the atmosphere have the potential to alter the climate.While different types of particulate matter (PM) can either warm or cool the environment, ozone in the atmosphere warms the climate.Common causes of air pollution include motor vehicles, industrial operations, household combustion appliances, and forest fires. Particulate matter, carbon monoxide, ozone, nitrogen dioxide, and sulfur dioxide are pollutants of great public health concern.To know more about environmental pollutants and pollution, visit:
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What statement is true about changes in our environment?
a. Some things change quickly.
b. We can’t observe changes.
c. Non-living things do not change.
d. Living things do not change.
Answer:
A some things change quickly
How much of the world’s population is fed by American farmers
Answer:
One U.S. farm feeds 166 people annually in the U.S. and abroad. The global population is expected to increase by 2.2 billion by 2050, which means the world's farmers will have to grow about 70% more food than what is now produced. About 11% of U.S. farmers are serving or have served in the military.
Explanation:
Mitochondria and chloroplasts have their own unique dna. Ribosomes in mitochondria and chloroplasts are similar to those in bacteria. Mitochondria are formed by binary fission. These statements together form the basis of what theory?.
Answer:
Endosymbiosis theory: the symbiosis of a free-living organism that eventually got trapped in eukaryotic cells
Explanation:
Use equation 1 from the section to calculate the PCV in each centrifuge tube from the blood sample your group was assigned to test . Record each PCV in the data table below
The packed cell volume is checked in cases where there are symptoms of anemia or erythrocytosis.
The PCV which is also known as packed cell volume is equal to the volume of packed red blood cells which is divided by the total volume of the given blood sample.
GIVEN - Red blood cell volumes are -
5.5 , 5.0 , 5.0 , 5.0 , 4.0
Total blood mixture volume is -
10.0, 10.5 , 10.0 , 10.5 , 9.5
SOLUTION - To calculate the packed cell volume -
5.5 / 10.0 = 0.55
5.0 / 10.5 = 0.47
5.0 / 10.0 = 0.5
5.0 / 10.5 = 0.47
4.0 / 9.5 = 0.42
The main function of packed cell volume is to calculate the red blood cell mass because any increase in the red blood cell mass will be equal to erythrocytosis which means the count of red blood cells is more than the specific sex normal range which is because of plasma volume reduction and also if it decreases then it will lead to anemia because it will have lesser number of red blood cell count and for determining anemia or erythrocytosis the blood test is advised and the reason behind this is cell destruction, blood loss, or failure of bone marrow production and the other name for packed cell volume is hematocrit or volume of packed red cells or erythrocyte volume fraction.
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Protons have a _______ charge.
Answer:
Protons have a Positive (+) charge.
Explanation:
Answer:
Protons have a positive charge
Explanation:
Consider the sporophytes and gametophytes of mosses and fems:
A) In which group does the sporophyte become independent and photosynthetic?
B) Which forms required liquid water in order to reproduce?
C) Which are able to spread farther, their spores or their gametes? Explain
The answers include the following:
The sporophyte is independent and photosynthetic in the group of vascular plants.The sporophytes require liquid water in order to reproduce. Spores are able to spread farther because they are carried easily by wind and other external factors.What is Sporophyte?
This is referred to as the diploid stage in the life cycle of some plants such as algae and is a non sexual reproduction which involves the use of spores.
These spores are usually dispersed by agents such as water and wind which is why they are able to cover a very large distance and then grow in such areas.
Sporophyte become independent and photosynthetic in the group of vascular plants only and are absent in the non vascular group of plants which is therefore the correct choice.
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Predict what changes occur from season to season in membranes of the brain of a deer that lives in colorado with its hot summers and cold winters:________
The Prediction of the changes that will occur from season to season in membranes of the brain of a deer that lives in Colorado with its hot summers and cold winters is that the percentage of fatty acids will be higher in the summer and then be lower in the winter.
Note that another Prediction of the changes that will occur from season to season in membranes of the brain of a deer that lives in Colorado with its hot summers and cold winters is that it will be able to perceive smell more in summers that in Cold winters.
Do deer have brains?A deer is known to be an animal that is said to make its brain as one form of weapon.
This is known to be its sniffing arsenal due to the fact that a good portion of a deer's brain is said to be one that is often used to deciphering smells.
Note therefore, that another Prediction of the changes that will occur from season to season in membranes of the brain of a deer that lives in Colorado with its hot summers and cold winters is that it will be able to perceive smell more in summers that in Cold winters.
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The question is in the picture. Please help!
Answer: Part 1 is GREATER because if the density of silver is 19.3 and Iron is 7.8 the density stays relevant to the problem.
Explanation: =)
what is the total surface area of air sac in m2 in a human
Answer:
100 m2
Explanation: