Read the scenario and examine the table.
Ivan wants to test how the amount of water consumed each day affects the number of facial blemishes people receive over a month. He gathers 12 people and divides them into 3 groups. He keeps everything the same for each group except for daily water and food intake. Throughout the month, Ivan tallies the number of facial blemishes each individual receives. The table details how Ivan changed the independent variables for each group.
Note: Group 1 is Ivan's control group.
What error did Ivan make in the design of his investigation?
A.) Ivan did not record the results for the dependent variable in a data table.
B.) Ivan did not determine the average number of blemishes received.
C.) Ivan tested more than one independent variable at a time.
D.) Ivan had the individuals in the control group consume water.
Answers
The answer is C.) Ivan tested more than one independent variable at a time.
Related Questions
Which term is most accurately describes a pure breeding strain?
Answers
The term that most accurately describes a pure breeding strain is "homozygous."
A pure breeding strain is an organism that consistently produces offspring with the same traits as the parent organism due to its homozygous genotype, meaning it has two identical alleles for a specific trait. The term that most accurately describes a pure breeding strain is "homozygous," meaning that the individual carries two identical copies of a particular gene
Learn more about pure breeding strains at brainly.com/question/13716878
#SPJ11
what is the correct order of structures that urine would pass to the body from kidneys as an exits to the body?
spongy urethra,
navicular fossa
renal pelvis
prosthetic urethra
ureter
bladder
Answers
The correct order of structures that urine would pass from the kidneys as an exit to the body is:
renal pelvis - ureter - bladder - prosthetic urethra - spongy urethra - navicular fossa.
The correct order of structures that urine would pass through from the kidneys as it exits the body is as follows:
1. Renal pelvis
2. Ureter
3. Bladder
4. Prostatic urethra
5. Spongy urethra
6. Navicular fossa
In this order, urine is produced in the kidneys, flows into the renal pelvis, then travels down the ureter to the bladder for temporary storage. From the bladder, urine passes through the prostatic urethra, then the spongy urethra, and finally exits the body through the navicular fossa.
To know more about kidney visit
https://brainly.com/question/28021240
SPJ11
Myth: An organism's kingdom only describes physical characteristics.
Answers
Answer:
No it does not because an organism's Kingdom describes a set of Organisms. The organisms in each Kingdom. There are six of them. They are Archaebacteria, Eubacteria, Fungi, Protista, Plants and Animals
Explanation:
Solid tumors are clusters of cancer cells and often contain blood vessels. When molecule B binds to the wild-type Brec protein in the plasma membrane of certain solid tumor cancer cells (Figure 1), the cancer cells express the membrane protein A and sometimes stimulate increased growth of blood vessels into the tumors.
Cells with a particular mutation in the Brec gene (Brec-MUT cells) have much increased expression levels of A and stimulate greater growth of blood vessels than do cancer cells with the wild-type Brec (Brec-WT cells); the cells with the mutant Brec can trigger intracellular signaling in the absence of B.
Researchers proposed that the signaling pathway modeled in Figure 1 is triggered by activation of the wild-type Brec and is associated with phosphorylation and activation of kinase D, expression of A, and the ability of the cancer cells to stimulate blood vessel growth.
Part A: Based on the signaling model shown in Figure 1, describe the role of molecule C-P in the activation of D.
Part B: Explain how a molecule such as kinase D can amplify an extracellular signal. Explain how the mutant Brec protein is able to activate kinase D even in the absence of its ligand.
Part C: Based on the proposed signaling pathway, predict the relative activity of kinase D in the Brec-WT cells compared with kinase D in the Brec-MUT cells when both cell types are grown in nutrient broth lacking B. Justify your prediction.
Part D: The researchers claim that treatment with a compound that inhibits dephosphorylation of the intracellular domain of the Brec protein will inhibit expression of A in Brec-WT cells but not in Brec-MUT cells. Based on the information provided, provide reasoning to refute their claim.
Answers
The molecule C-P phosphorylates and thus activates D, whereas Kinase D amplifies cellular signaling by phosphorylating many substrates. In this case, it is expected to observe kinase D overexpression in Brec-MUT cells.
Cancer, phosphorylation and signaling pathwaysCancer can be defined as a multifactorial disease, which is often associated with uncontrolled cell growth.
Cancer signaling may be associated with defective pathways such as, for example, a mutated kinase protein that affects normal downstream molecular cascades.
A kinase is a specific protein that acts to phosphorylate specific cellular substrates, thereby activating/deactivating a particular signaling pathway.
Learn more about cancer pathways here:
https://brainly.com/question/16103657
Which statement is NOT true about subatomic particles? a) In chemical reaction the number of protons change. b) Neutrons have no electrical charge. c). Electrons in the outer orbit determine the chemical reactivity of the atom d) Electrons are found in orbitals outside of the nucleus. e) Protons are found in the nucleus.
Answers
The statement which is not true about subatomic particles is: (a) In chemical reaction the number of protons change.
Subatomic particles are the materials that make up an atom. They are smaller in size than the atom. There are three sub-atomic particles: protons, neutrons and electrons. The proton and neutron make up the nucleus of the atom, and the electrons reside in a cloud form surrounding the nucleus.
Protons are the positively charge sub-atomic particles. Since they form the core (nucleus) of the atom therefore they cannot take part in any chemical reaction and hence their number never changes. If the number of protons change then the identity of the atom will also change.
To know more about protons, here
brainly.com/question/1004765
#SPJ1
Researchers were analyzing cellular respiration in humans. They labeled the carbon atoms (C) in glucose with a tag that allowed them to follow where carbons went. They then made some cupcakes using the glucose that contained the labeled carbon atoms. They asked human test subjects to eat those cupcakes and attempted to follow where the labeled carbon atoms went. If the researchers were able to collect samples from the human test subjects, where would they find those labeled carbons at the END of the citric acid cycle? Select only ONE answer choice. A) They would find those labeled carbon atoms in newly produced G3P molecules B) They would find those carbon atoms in molecules of FADH2 C) They would find those carbon atoms in CO2 molecules D) They would find those carbon atoms in molecules of pyruvate E) They would find those carbon atoms in molecules of ATP
Answers
The correct answer is C) They would find those carbon atoms in CO₂ molecules.
In the citric acid cycle, also known as the Krebs cycle, glucose is broken down to produce energy in the form of ATP and electrons carried by NADH and FADH₂ . The cycle begins with the conversion of glucose to pyruvate during glycolysis, which occurs in the cytoplasm of the cell.
However, the citric acid cycle takes place in the mitochondria and starts with the conversion of pyruvate to acetyl CoA. During the cycle, acetyl CoA enters the cycle and combines with oxaloacetate to form citrate, which undergoes a series of reactions resulting in the regeneration of oxaloacetate.
The labeled carbon atoms from the glucose would enter the citric acid cycle as acetyl CoA and be incorporated into the carbon skeleton of citrate. Throughout the cycle, the carbons from the glucose are gradually released as carbon dioxide (CO₂) molecules, resulting in the production of NADH and FADH₂.
Learn more about “Krebs cycle, “ visit here;
https://brainly.com/question/13153590
#SPJ4
Complete Question
Researchers were analyzing cellular respiration in humans. They labeled the carbon atoms (C) in glucose with a tag that allowed them to follow where carbons went. They then made some cupcakes using the glucose that contained the labeled carbon atoms. They asked human test subjects to eat those cupcakes and attempted to follow where the labeled carbon atoms went. If the researchers were able to collect samples from the human test subjects, where would they find those labeled carbons at the END of the citric acid cycle?
A) They would find those labeled carbon atoms in newly produced G₃P molecules.
B) They would find those carbon atoms in molecules of FADH₂.
C) They would find those carbon atoms in CO₂ molecules.
D) They would find those carbon atoms in molecules of pyruvate.
E) They would find those carbon atoms in molecules of ATP.
What concept does the illustration shown in the picture represent?
Answers
Answer:
D
Explanation:
It's the building and sequencing of your DNA.
which heart chamber pumps oxygen-rich blood out to the rest of the body?
Answers
The primary artery that transports oxygen-rich blood to the rest of the body, the aorta, is entered by the left ventricle (LV) through the aortic valve (AoV). Two upper atria and two lower ventricles make up the heart's four chambers.
Deoxygenated blood from the body is taken in by the right atrium and pumped to the right ventricle. This blood is deoxygenated before entering the lungs through the right ventricle. Blood that has been oxygenated by the lungs is taken in by the left atrium and pumped to the left ventricle, where it is then circulated throughout all areas of the body via the aorta. The pulmonary veins that enter the left atrium return the oxygenated blood to the heart. Blood enters the left ventricle from the left atrium.
To know more about Transportation of blood click here:
brainly.com/question/12723858
#SPJ4
Substance A has an LD50 of 3 milligrams per kilogram of body mass for a species of fish. Substance B has an LD50 of 10 milligram per kilogram of body mass. Which substance is considered more deadly?
Substance A
Substance B
They are equally deadly.
This cannot be determined without the ED50.
Answers
Answer:
LD50 means a lethal dose of a particular substance or drug is given to a group of animals in a test group. This dose has the ability and capacity to kills 50% of the population of the test group of animals.
If Substance A has an LD50 of 20 mg/kg of body mass, this means that for 1 kg of body mass, 20 mg of substance A can kill 50% of the population that substance A was given to the test group.
If Substance B has an LD50 of 10 mg/kg of body mass, this means that for 1 kg of body mass, 10 mg of substance A can kill 50% of the population that substance B was given to the test group.
Therefore, Substance B is deadlier than Substance A because the quantity of substance B (10mg) is less than the quantity of Substance A (20mg) and it has the same lethal effect on the population.
Explanation:
pls mark me as brainlist
Answer:
B
Explanation:
Substance B is deadlier than Substance A because the quantity of substance B (10mg) is less than the quantity of Substance A (20mg) and it has the same lethal effect on the population.
explain the two changes that rauch describes that weakened parties. make sure you understand his point.
Answers
Rauch identifies two changes that have weakened political parties which are the decline of party bosses and the rise of interest groups.
In his book Political Parties and Political Survival, Rauch explains that two changes have weakened parties. These changes are:
1. Decline of Party Bosses: The primary election system, where voters directly choose candidates, has diminished the power and influence of party bosses. Party bosses were traditionally influential figures who controlled candidate selection and enforced party discipline.
With the rise of primary elections, party bosses no longer have the same level of control over candidate selection. This shift has led to reduced party discipline and diminished party control over the candidates that run for office.
2. Rise of Interest Groups: Interest groups, independent organizations advocating for specific causes or interests, have gained prominence and influence in the political landscape. They operate outside of the party structure and pursue their own agendas.
Interest groups are able to support candidates who align with their causes and effectively lobby for their interests. As a result, they have become a powerful force in politics, potentially overshadowing the influence of political parties.
This development weakens parties by providing alternative channels of representation and by allowing interest groups to exert influence outside of the party system.
Both these changes have contributed to the weakening of political parties by undermining their control over candidate selection, reducing party discipline, and providing alternative avenues for political representation and influence.
Learn more about political parties here:
https://brainly.com/question/30107048
#SPJ11
When writing a hypothesis in this class, an if... and... then... statement is
used. What is written after the if?
Controlled Variable
Independent Variable
Dependent Variable
Constant
Answers
Why is conjugation in bacteria not considered to be sexual reproduction?
A.It can occur between different species.
B.DNA is shared, but no new organisms are produced.
C.Cell division occurs, but no DNA is shared.
D.Conjugation is a form of binary fission, which is asexual reproduction.
Answers
Answer:
B.DNA is shared, but no new organisms are produced.
Select the correct answer from each drop-down menu. juan picks up a steel utensil and immediately drops it because it’s extremely hot. how does the reflex arc work to protect juan from a worse burn? in a reflex arc, the neuron carries the action potential from the .
Answers
The correct answer will be
1. Motor neuron
2. Spinal cord to muscle
In a Reflex arc, the Motor neuron carries the action potential from the Spinal cord to muscle.
The following are the components of a reflex arc:
A stimulus-detecting receptorA sensory neuron that will transmit the data to the spinal cord.A processing interneuron for the data (not present in all reflexes)A neuron that transmits signals to an effector organAn organ that carries out the reaction action.A brain circuit that manages a reflex is called a reflex arc. In vertebrates, the majority of sensory neurons synapse in the spinal cord rather than passing directly into the brain.
When Juan picks up a steel utensil the receptor detects the stimulus. A sensory neuron transmits the data to motor neuron which activates spinal cord which then signals the effector organ to carry out the reaction action i.e., Juan immediately drops the hot Utensil.
learn more about Reflex arc here: https://brainly.com/question/894334
#SPJ4
Answer:
Thus us what you should see got it right on plato!
Explanation:
HELP PLEASE Sucrase, lactase, and maltase break down disaccharides into monosaccharides. Monosaccharides are transported to the bloodstream. Salivary amylase breaks down carbohydrates into disaccharides. Pancreatic amylase breaks down carbohydrates into disaccharides. ↓ ↓ ↓
Answers
Explanation:
In the given question, the digestion of monosaccharides has been discussed and the steps of digestion in the digestive system are:
1. The digestion of carbohydrates begins in the mouth where amylase breaks down the starch.
2. The sugars are not completely digested in the mouth therefore they travel from mouth to the stomach.
3. In the stomach, there are no enzymes to digest the sugars.
4. Then, food enters the intestine where intestinal secretions breakdown the sugars.
5. The intestinal juice breaks down the oligosaccharides into diassacharides and these disaccharides are further broken down by maltase, sucrase and lactase.
6. After this, the monosaccharides are formed and these are easily absorbed into the bloodstream.
7. Pancreatic amylase breaks down starch into monosaccharides.
This completes the digestion of the carbohydrates.
.Geri has pain behind her ear lobe and was diagnosed with mastoiditis. Which bone is affected?A) temporal bone. B) frontal bone. C) mandible. D) occipital bone
Answers
The bone that is affected in mastoiditis is the temporal bone. This bone is located on the side of the skull, near the ear. Mastoiditis is an infection of the mastoid process, which is a small bony protrusion behind the ear. The mastoid process is connected to the middle ear, and infection in this area can spread to the mastoid bone.
Symptoms of mastoiditis include pain and swelling behind the ear, fever, ear discharge, and hearing loss. Treatment for mastoiditis usually involves antibiotics to clear the infection, and in severe cases, surgery may be necessary to remove infected tissue and drain any pus that has accumulated.
It is important to seek medical attention if you experience any symptoms of mastoiditis, as this condition can cause serious complications if left untreated. In rare cases, mastoiditis can lead to meningitis, a dangerous infection of the membranes that surround the brain and spinal cord. So, it is better to be cautious and consult a healthcare professional if you suspect that you have mastoiditis.
Learn more about mastoiditis here:
https://brainly.com/question/30019738
#SPJ11
21. Kinetic energy is energy associated with
a. chemical reactions
b. motion
c. food
d. coal
e.light
Answers
Answer:
food and chemical reactions
HELP answer only if 100% sure you think that is the correct answer.
Answers
Answer:
First picture
● C.
Second picture
● B.
Third picture
● I think C.. sorry but the picture is so blurred!
Fourth picture
● A.
Fifth picture
● A.
\(\color{yellow}{}\)\(\color{yellow}{}\)\(\color{yellow}{}\)\(\color{yellow}{}\)\(\color{yellow}{}\)\(\color{yellow}{}\)\(\color{yellow}{}\)\(\color{yellow}{}\)
Answer:
1stPicture= Option C
2nd Picture=Option B.
PLEASE HELP YOU WILL GET MARKED THE BRAINIEST AND PLEASE TELL ME WHY U CHOSE THE ANSWER
- What is the geocentric model of the
universe?
a) The Theory of Evolution
b) Newton's Laws of Motion
c) The belief that Earth is at the center of our solar system
d) Superstition
Answers
Answer:
I believe C,
Explanation:
The geocentric model of the universe maintained that the Earth was at the center of everything in the solar system. In it, the Sun and planets orbited around our planet. Many odd and elaborate adaptations were required to make this model agree with observations. This problem increased, as our our observations got more accurate.
The geocentric model was superseded by the heliocentric model, in which the planets all orbited the Sun. The Heliocentric model was eventually able to show that the positions of the planets over time were much more convincingly, and simply portrayed by it, than by the former model.
Apologizes if I'm wrong/
Answer: It is c because the person who made it or thought of it said that the earth is at center of the cosmos or the universe.
Explanation:
1. All of the following pieces of equipment EXCEPT for _____________ could be useful for transferring a liquid from one container to another.
A. beaker B. funnel C. Petri dish D. Graduated cylinder
Answers
Answer:
C. Petri Dish
Explanation:
Answer:
C. Petri dish
Explanation:
A petri dish is not useful for transferring a liquid from one container to another. This is due to the shape of the dish. It has a flat and shallow build.
A beaker is hollow and cylindrical in shape. It is very useful for transferring liquid. A graduated cylinder will provide good way of accurately measuring the volume of liquids. A funnel is a good conduit for transferring liquid from one place to anotherA petri dish is flat and shallow. Liquids will readily spill off it.
Earthy, shiny, waxy, metallic, and pearly are terms used to describe a mineral's luster.
What might a scientist observe about a mineral that would help the scientist classify the
luster as metallic?
Answers
We have that for the Question it can be said that
Shinny minerals a conclusion of reflective properties will be madeIf the mineral is smooth and looks like glassThese properties of the luster might help the scientist classify the luster as metallic.
From the question we are told
Earthy, shiny, waxy, metallic, and pearly are terms used to describe a mineral's luster.
What might a scientist observe about a mineral that would help the scientist classify the
luster as metallic?
Generally
Shinny minerals a conclusion of reflective properties will be madeIf the mineral is smooth and looks like glassTherefore
These properties of the luster might help the scientist classify the luster as metallic.
Shinny minerals a conclusion of reflective properties will be madeIf the mineral is smooth and looks like glass
For more information on this visit
https://brainly.com/question/17756498
What is one function of proteins?
Answers
Answer:
. It helps repair and build your body's tissues, allows metabolic reactions to take place and coordinates bodily functions.
Explanation:
HELP ASAP!!!!
What is the reactant of lactic acid fermentation and the product that builds up during exercise?
A) oxygen and lactic acid
B) carbon dioxide and water
C) Glucose and other compounds
D) glucose and lactic acid
Answers
Answer:
gotta be D or A but D is more reasonable
D) glucose and lactic acid
Homolactic fermentation also occurs in muscle cells and results in the formation of two molecules of lactic acid from the breakdown of the reactant.Glucose is the simple sugar reactant used in this type of homolactic fermentation, instead of lactose used in the case of bacteria. The reactants are pyruvate, NADH and a proton. This process of energy production is employed by muscle cells when oxygen levels are low, such as during periods of extreme exercise. The lactic acid end product is also one of the factors responsible for muscle soreness after exercise.Thus, reactant is glucose while product is lactic acid for lactic acid fermentation.Therefore, the correct option is D.
brainly.com/question/20829273
What happens during the kerbs cycle
Answers
Answer:
During the Krebs cycle, pyruvic acid is broken down into carbon dioxide in a series of reactions that give off energy. The high-energy electrons that are produced are picked up by a series of electron carriers, and the energy is used to convert ADP into ATP.
Explanation:
Answer:
The Krebs cycle occurs in the mitochondrial matrix and generates a pool of chemical energy (ATP, NADH, and FADH2) from the oxidation of pyruvate, the end product of glycolysis. Pyruvate is transported into the mitochondria and loses carbon dioxide to form acetyl-CoA, a 2-carbon molecule.
how to bruise formed by collection of blood at the puncture site?
Answers
If the individual taking the blood doesn't put sufficient pressure upon this insertion site once the syringe is removed, this could also result in a bruise.
Is a bruise after having blood drawn typical?After getting your blood drawn, some bruising is typical. When a blood artery is injured, blood leaks into the tissue beneath your skin, resulting in a bruise. Blood clots typically result in a coloration that is deeper than the skin surrounding.
What is the name for blood bruises?The medical name for bruises is "ecchymosis." When blood collects beneath your skin, they develop. A blood vessel burst is what causes them. Bruises appear as a mark on the skin that ranges in color from red to purple or black and blue.
To know more about blood visit :
https://brainly.com/question/14781793
#SPJ4
What is the main function of cellulose in plants? Cant pick between B and C
Answers
So the correct answer should be C
Which has been a negative impact of technology?
OA. More waste
B. Less access to food
OC. Less farming
OD. More human labor
SUBM
Answers
OA. More waste
B. Less access to food
OC. Less farming
OD. More human labor
SUBM
Answer:A.More waste
Veterinary Science!!
After going on a hunting trip where he and his buddies ran across a dead deer, Darius develops itchy bumps on his
hand. His friends tell him that he shouldn't have rolled the deer over, but he wanted to get a closer look. Now the
bumps have black spots in the middle. Concerned, Darius sees a doctor, who diagnoses him with anthrax poisoning.
Which treatment will Darius's doctor MOST likely prescribe?
antibiotic
anti-fungal
antiviral
anti-inflammatory
Answers
The treatment that Darius's doctor will MOST likely prescribe for anthrax poisoning is an antibiotic.
What is to be prescribed?Bacillus anthracis is the bacterium that causes anthrax, which can be treated with antibiotics like penicillin, doxycycline, or ciprofloxacin.
When the bacterium penetrates the skin by a cut or scratch, it causes itchy pimples with black spots in the middle, which is a sign of cutaneous anthrax, the most frequent type of anthrax. Anti-fungal, antiviral, and anti-inflammatory medications would not be effective in treating anthrax
Learn more about veterinary:https://brainly.com/question/2379147
#SPJ1
What experiment did the student conduct that involved the evaporation of alcohol
Answers
Students take part in this "alcohol gun" experiment to see what happens when an electric spark ignites ethanol vapor and air in a corked plastic bottle. The subsequent minor blast fires the plug across the room.
Liquor dissipates in light of the fact that, at a superficial, the particles of liquor interact with air. Vapor pressure, causes the liquid molecules at the surface to react and break their bond with hydrogen, causing it to begin evaporating. Alcohol has a rate of evaporation that is even faster than that of water.
When you start blowing on your hand, the alcohol and water will start to evaporate. Alcohol evaporates at a lower temperature than water does. That truly intends that for a similar measure of fluid, a more intense move happens during the dissipation of water contrasted and the liquor.
To learn more about electric sparks here
https://brainly.com/question/9879752
#SPJ4
Q- What experiment did the student conduct that involved the evaporation of alcohol?
What are the answers to “What Are The Steps in The Scientific Method?
Answers
Like the steps to the scientific method?
1. Define a Question to Investigate. As scientists conduct their research, they make observations and collect data. ...
2. Make Predictions. Based on their research and observations, scientists will often come up with a hypothesis...
3. Gather Data. ...
4. Analyze the Data. ...
5. Draw Conclusions.
answer it answer it .
Answers
Answer:
Pseudopodia
Explanation:
Human uses his legs for locomotion and movement similarly in amoeba pseudopodia is used for movement in amoeba and other unicellular organisms. Pseudopodia is a structure in amoeba which is used for movement and locomotion in amoeba and it is also used for engulfing food, amoebic movement is also considered as a protoplasmic movement.Answer:
c
Explanation:
nkjbhvcgfxdsftgjkhvghcfgvhjvgc ghuvg