Answer:
Prepare solutions of different acid concentrations, measure 50 milliliters of each into different beakers, and place the same type of medication of the same mass into the beaker
Explanation:
The experiment to test the effect of stomach acid concentration on the solubility of a particular oral medication will have the following configuration;
The independent variable = The concentration of the acid to which the medication is added
The dependent variable = The solubility of the medication in the acid concentration
The constant = The medication which is added to the acid concentration
The controls = The fixed mass and type of the particular medication and fixed volume of the different concentrations of the acid samples.
Many building blocks are joined together to make a large biological
macromolecule. This chain of sub-units is called a(n)...
A- Isomer
B- Monomer
C- Dimer
D- Polymer
Unicellular organisms can be
Prokaryotes
Ameoba
bacteria
all of the above
Answer:
all of the above
which best defines cohesion
Answer:
The act or state of sticking together tightly especially
Explanation:
That is one definition.
Hope that helps.
Answer:
Cohesion is sticking of particles of same substance.
Explanation:
For example we say water has cohesion property it means water molecules are cohesive with other water molecules.
What are the controlled variables in a cell
1) A class collected water samples from a nearby pond and wants to observe the samples for
microorganisms. Which microscope would be the most appropriate for the students to use?
A. Dissecting microscope
B. Compound light microscope
I
C. Transmission electron microscope
D. Scanning electron microscope
Answer:
Compound light microscope
Explanation:
This is the ideal microscope because it requires the passage of harmless beam of light through the specimen.Since the pond contain living creatures this is best to use.
C and D both require the transmission of beam of electrons through a sample. D depends on the reflection of the electron after scanning the specimen surfaces and sent this to the lenses of the observer.(C)involved the passing of the beam of electrons through the specimen the interaction of the electrons with the atoms in the specimen(,therefore in both cases these specimens can not be wet and living.
The specimen should be dry in both cases and therefore non -living ,because the chamber for the specimen must be a vacuum,and living organism can not survive in the vacuum. Thus pond water can not be used as specimen because the specimen in the water but me be living.
Starfish, sea stars, and sea urchins are classified as echinoderms. What does the prefix "echin-" mean?
A
smooth skin
thin skin
С
striped skin
D
spiny skin
dry skin
Chemical reactions in the body involve heat.
Some of the reactions are called exothermic. What does the prefix exo" mean?
Answer:
The prefix "echin-" means D. The prefix "exo" means outside/external.
Explanation:
Which of the following is not found in an observational study? A-controlled variable B-manipulated variable C-None of these are found in an observational study. D-control group
Answer:
C-None of these are found in an observational study
Explanation:
(A.) controlled variables are a part of what's found in a controlled experiment. (B.) manipulated variables are a part of what's found in a controlled experiment. (C.) Answer choice A. or Controlled variables, Answer choice B. or Manipulated variables, and Answer choice D. or Control groups are a part of what's found in a controlled experiment. (D.) Control groups are a part of what's found in a controlled experiment. Therefor this only leaves one answer and that answer is Like I said C-None of these are found in an observational study.
Which term refers to the total chemical processes of the body?
A. homeostasis
B. metabolism
C. feedback
D. respiration
Answer:
respiration is process.....
of chemical formation by body
Please HELP ASAP!!! I NEED HELP ON THESE TWO QUESTIONS
Answer:
Number 4, and number 5 are C.
Explanation:
The amount of water affects the mass and height as shown on the table. The graph clearly shows that plant 1 goes up at a constant rate, while plant 2 grows a little at first, but then stops.
3. What is another name or a sub-property of cohesion? Give an example of how this affects living
organisms
Answer:
Unity is the other name of cohesion.
Explanation:
The property of cohesion is to sticking together of something. The molecules of liquid stick together with the help of cohesion. This cohesion property is very important for plants because with the help of this property, plants take water through roots from the soil and the water molecules are stick together with the help of cohesion. If cohesion is not present then the uptake of water can not be possible.
3.
Which level of organization is made of many different organs working together
to perform a BIG job for your body, like digesting your food?
The correct answer is organ system.
As PCBs move up the trophic level in food chains, of food web, their concentration increases. What is that called?
All organisms have organs and/or body systems. True or False?
Which statement describes a similarity between asexual reproduction and sexual reproduction? Both processes involve fertilization. Both processes involve cell division. Both processes produce genetically identical offspring. Both processes require two parents.
Answer:
The correct answer is B. Both processes involve cell division.
Explanation:
Both asexual and sexual reproduction involve cell division; they are means of creating offspring.
Only sexual reproduction involves fertilization, so we know that choice A is incorrect. Only asexual reproduction produces genetically identical offspring, so choice C is also incorrect. Finally, only sexual reproduction requires two parents, so choice D is not correct either.
This leaves us with choice B as the correct answer.
Hope this helps!
Answer:
Answer is B
Explanation:
I got 92%, so there's a 2/25 chance that this answer is wrong, pls tell me if it's wrong
Can someone help me please please help me please it’s today please
And show the work please please
Atoms have three subatomic particles: protons, neutrons, and electrons. ... Knowing what you know about the nucleus and the subatomic particles in the nucleus, what do you think is the charge of the nucleus of an atom? The nucleus of an atom has a positive charge because the proton is positive and the neutron is neutral.
The atom is positive.
Answer:
the atom is positive
Explanation:
It takes just four hours for one bacterium to become _____.
Answer: 256 bacterium.
Explanation:
suppose a bacterium would divide once in every half an hour, this means it would be double in half an hour.
therefore, a number of the bacterium after half an hour will be 1 x 2 = 2.
After one hour, we would have doubled the number of bacterium =2 x 2
= 4.
Also, in one and a half hours, it would become 4 x 2
= 8.
In 2 hours, it would be 8 x 2 = 16.
Also in two and half hours, it would be 16 x 2
= 32.
In three hours, it would be 32 x 2
= 64.
In three and a half hours, it would be 64 x 2
= 128.
Funally, in four hours, the number of bacterium would have been multiplied to 128 x 2
= 256.
It takes just four hours for one bacterium to become 256 bacteria.
It should be noted that a bacterium will divide once in every half an hour. This implies that it'll be double in every half hour. Therefore, for an hour, there'll be 2 bacterium.
Since it doubles every half hour, in 2 hours, the value will be 16 bacteria. Therefore, the value in four hours will simply be:
= 16 × 16 = 256 bacterium.
Therefore, it takes just four hours for one bacterium to become 256 bacteria.
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does the phase of the moon follow an pattern
Answer:
Yes.
Explanation:
The most obvious patterns of the moon are the phases of the moon, which move in a month-long cycle. Because the moon reflects its light from the sun, only the part of the moon that faces the sun is visible. ... Another quarter way through the cycle, the other half of the moon is visible; this is known as the third quarter.
80 POINTS
What does Eureka mean, and who is famous for using the word and why?
What was so clever about what Archimedes did?
Answer:
Explanation:hhjnj
Classification systems:
Can somebody help me please
Are all the same
Are all different
May vary with the taxonomists
None of these
Explanation:
Classification system are system with distribution of classes created according to common relations or affinities.
Collecting research data is the final step in the scientific method.
true or false
Answer:
False
Explanation:
Edg
Collecting research data is not the final step of the scientific method. Deriving a conclusion from the collected data is the final step. Hence, it is false.
What are the steps in a scientific method?The scientific method is a process in which data is collected, observed and then a conclusion is derived. The scientific method is a very useful method in technology, computers, and business.
The following steps are involved in the scientific method:
First of all, is asking a questionCollecting dataPerform researchEstablish hypothesisConduct an experiment to test the hypothesisMake an observationAnalyze the resultDerive conclusion.Deriving a conclusion is the last step in the scientific method, while data collection is the most important step in data collection.
Therefore, collecting research data is not the final step and it is false.
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Which of the following is not controlled at the individual level?
Response
Genetic code
Growth and development
Evolution
Answer:
Evolution
Explanation:
Evolution is the change that occurs to a particular species of a population from generation to generation. This change is due to the alteration in their genetic composition, which is inherited over time.
However, this change do not occur at the individual level but rather it occurs to a population i.e. only a POPULATION undergoes evolution process not individual organisms. Note that, the other options including genetic code, growth and development, response are controlled individually by the organism, however, the evolution process takes time and occurs over a population rather than to individuals
If a patient was diagnosed with mitochondrial disease, what cells would NOT be likely to be responsible for their symptoms?
Answer:
the mitochondria cell
Explanation:
When many _______ are connected by ________ we call it a polysaccharide.
When many monosaccharides are connected by glycosidic bonds we call it a polysaccharide.
How does
changing the
type of water
affect its ability
to absorb thermal
energy from the
Sun?
Is this a testable question or a non - testable question
Answer: Testable Question
Explanation:
testable questions are always aboutchanging one variable to see what the
effect is on another variable.
Can be answered through that involve experiments, , or surveys , investigations , observationsDONT FORGET TO MAKE ME BRAINILIST
The measurement of the pressure gradient of two solutions that are separated by a selectively permeable membrane is called...
A. Osmolarity
B. Equilibrium
C. Homeostasis
D. Tonicty
The osmotic gradient, which is the concentration difference between two solutions on either side of a semipermeable membrane, is used to determine a particle's concentration in a solution. Thus, Option A is correct.
What is osmolarity of a solution?Osmolarity, which is determined by the number of osmosis of a solute per liter of solution, is a gauge of solute concentration.
According to their relative osmolarity, solutions can be broadly characterized as hypertonic, hypotonic, or isotonic.
Osmolarity is important because cells cannot survive if their environment's osmolarity is significantly different from their own.
From a lower osmolarity to a greater osmolarity, water flows over a membrane. It switches from the diluted to the concentrated side, to put it another way.
Therefore, osmolarity measurement of the pressure gradient of two solutions that are separated by a selectively permeable membrane.
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state two functions of protein
Answer:
1- constitute cellular structures.
2- confer elasticity and resistance to órganos and tissues.
Answer: Some proteins help cells keep their shape, others help build muscle tissue, and others help break down chemicals
Explanation: Hope this helps :)
During photosynthesis, plants release_____into the air through their leaves.
Answer:
carbon dioxide is the answer
oxygen
Explanation:
because they do and they always have and they do that so we can
What should Smithers conclusion be
Answer:
sry I'm not getting the answer fr ur question
You did an experiment where you want to test if a special kind of fertilizer will actually help your apple tree produce a lot of apples. To do the experiment you went to your local nursery and purchased two of the same kind of apple trees. You planted both trees in your sunny backyard , gave both of them the same amount of waterbut you gave one tree the special fertilizer and the other tree with the regular old fertilizer you've used before . After about a month , you noticed that the tree that got the special fertilizer grew over 100 apples than the other tree that grew about 40 apples . From this experiment , which of the following is considered the dependent variable ?
Answer:
Dependent variable: number of apples
Explanation:
In an experiment, the independent variable is the variable that isn't modified by the other variables measured in the experiment. In the example above indicated, the independent variable is the fertilizer used in the experiment. On the other hand, the dependent variable is the variable tested or measured in the experiment, thereby this variable is 'dependent' of the independent variable.