A student carried out an experiment to determine how different concentrations of sucrose solution will affect osmosis. The student
set up five bags of dialysis tubing with different concentrations of solutions in each one. The first one had distilled water (OM).
followed by 0.25 M.0.5 M, 0.75 M, and 1.0 M sucrose solutions. These bags were placed in distilled water for thirty minutes. The bags
were then massed removed from the distilled water and massed on a scale. Revise the experiment by selecting all of the choices
below that would strengthen the experimental design
Answer:The bags should be massed before going into the distilled water, the temperature of the solutions in the experiment should be held constant, the bags should be kept in the distilled water soil it ion for the same length of time.
(Check all that apply)
Explanation:
Answer:
A,C,E
Explanation:
what is the difference between runoff and the storage of water?
What gas is CREATED during cellular respiration?
Carbon Monoxide
O Carbon Dioxide
Water
Oxygen
Answer:
dioxide
Explanation:
which of the following determines the identity of an element?
a. atomic number
b. mass number
c. atomic mass
d. overall change
The identity of any element is given out by the atomic number it carries thus every element has different atomic number. The correct answer is option A.
What does atomic number signify ?It signifies the number of electrons and the number of protons which are present in any element as the atomic number is equal to the number of electrons and the number of protons as well.
Atomic number is a unique property that is given out to element where the basis of their characters and the properties signifies their basic characters on which the elements will align themselves for example the elements having the atomic number as the 1 at the end usually has 1 electron in their last atomic shell same for 2.
On the basis of their properties elements are divided into various groups where the 1st one is called as alkali metal and the 2nd one is called as alkaline earth metals, 17 is called as halogens and the last 18th is called as noble gases.
Learn more about periodic table at :
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Which statement best explains why radon and krypton do not bond easily with other elements
Answer:They have eight electrons in their valence shells, so they are stable without gaining or losing electrons.
Explanation:
l
Answer:
B
Explanation: I did my research & I am 99.99% sure. Sorry if I'm wrong, but hope this helped.
What is resolving power? Why is it important in biology?
Answer:
it is the measure of the clarity of the image.the minimum distance between two points can be separated and still be distinguished as two points is resolving power.it is important because it helps to see small molecules that can't be seen with naked eye
Explanation:
Incomplete dominance and problem
Answer:
100% or 50%
Explanation:
make a chart
R R
rRr Rr
rRr Rr if rr is pink we see there can be no pink
or it can be
R r
r Rr rr
r Rr rr
which is a 50% chance
Answer:
50%
Explanation:
F1 will get all pink which is Rr
Rr(pink) x rr(white)
F2 will get Rr Rr rr rr
Possiblity for white is 50% or 1/2
Ultrasound is used for pre nature scanning. This is much safer than using x rays. However doctors were only sure it was safe after experiments on mice. Explain whether or not you think that these experiments were justified
Answer:
They were not justified bc they were only tested on animals
Explanation:
10. True or False. The pH scale is the measurement system to indicate the concentration of hydrogen (H+) ions in
a solution
Answer:
that is true
Explanation:
which of the following is the most common method of photosynthesis?
A: C3
B: CAM
C: rubisco
D: C4
Answer:
B: CAM
Explanation:
Answer:
C3
-C3 was the original
C4 and CAM have been discovered recently and are only seen in a few types of plants.
HELP HELP HELP Why do minerals look the way they do
Answer:
Explanation:
Being able to identify minerals is important, because mineral identification is necessary to identify rocks and can be used to understand both the landscape and the geologic history of the area.
Our Sun is a sphere of plasma held together by _______.
Answer:
Our Sun is a star, a sphere of plasma held together by gravity.
Explanation:
Answer:
gravity.
Explanation:
If the Moon had oceans would there be tides similar to what we
experience on Earth? Explain.
Answer:
yes,the gravitational pull is less on the moon
hope this helps:)
Answer:
If the conditions of the moon were like that of Earth (if it had continents and oceans), then Earth's gravitational pull on the tides on the Moon would be many tides greater than on Earth
somebody help me plzzz
Answer:the correct answer is D:) can i have brainly?
Explanation:
Answer:
D. a hypothesis
Explanation:
The statement starts with an if, thus meaning that it is yet to be known and that an experiment has to be carried out first.
This wave picked up by the space probe was most likely a(n) — radio wave radio wave infrared ray infrared ray visible light visible light gamma ray gamma ray
Answer:
Gamma rays
Explanation:
If you really read what was written on the top, it said "extremely high energy and really short wavelengths.
What are sex chromosomes? What is the sex chromosome combination for human males and females?
Answer:
(Wow! Weird how this pooped up, I just finished this biology lesson.)
Sex chromosomes are the gene that decides on our gender. The males have X and Y sex chromosomes (XY). Females have only two X sex chromosomes (XX).
More info: Because males have both X and Y sex chromosomes, their genes decide the offspring's gender.
Answer:
The sex chromosomes are referred to as X and Y, and their combination determines a person's sex. Typically, human females have two X chromosomes while males possess an XY pairing. This XY sex-determination system is found in most mammals as well as some reptiles and plants
Explanation:
Which best explains how green plants absorb energy from the sun?
A) Sunlight heats up the outside of a leaf
B) Chemical Bonds in a glucose are formed
C) A photon strikes electrons in special molecules in a cell
D) Carbon dioxide combines with water to form glucose molecules.
Answer:
the answer is C
Green plants absorb energy from the sun when "A photon strikes electrons in special molecules in a cell"
Green plants are unique organisms being that they possess the ability to capture and utilize energy from the sun. This is possible because they possess special pigments in their CHLOROPLAST called CHLOROPHYLL. The general process whereby green plants capture and utilize sun's energy is called PHOTOSYNTHESIS.
During photosynthesis, a photon of light strikes electrons in the thylakoid lumen of the chloroplast. This facilitates the synthesis of ATP (energy) in further reactions that takes place in the chloroplast.
Therefore, green plants are able to obtain energy from the sun when photons (beam of light) strikes electrons in their CHLOROPLAST.
Learn more at: https://brainly.com/question/12789656
Why can whales not breathe underwater?
Answer:
Whales and dolphins are mammals and breathe air into their lungs, just like we do. They cannot breathe underwater like fish can as they do not have gills. ... After each breath, the blowhole is sealed tightly by strong muscles that surround it, so that water cannot get into the whale or dolphin's lungs.
Many birds live in mountainous temperate forest ecosystems. Above the tree line on mountains, however, the ecosystems change. Few birds are found there. Many factors contribute to the lower number of birds seen above a mountain’s tree line. Which of these factors is abiotic? _________________________________
(limited food, frequent high winds, high flying predators, no trees for shelter)
which of the following provides growth and development information to cells
A. deoxyribonucleic acid
B. Polymerase
C. adenosine triphosphate
D. cell adhesion molecules
Answer:
a deoxeribonucleic acid
Explanation:
Passive transport into cells is driven by a concentration gradient; a greater concentration of molecules on one side of the membrane.
Which direction would oxygen move across a cell membrane if there was a greater concentration of oxygen molecules on the inside of the
membrane?
A. It would continue to concentrate inside the cell.
B. The random diffusion of oxygen would balance and have no net effect.
C. Towards the outside of the cell.
D. None of the above.
Answer:
A. It will continue to concentrate inside the cell.
Explanation:
Due to the higher concentration of oxygen molecules on the inside, oxygen molecules of the outside move to the inside and the more the oxygen molecules move inside the higher the concentration of the oxygen molecules on the inside.
Answer:
A
Explanation:
Towards the outside of the cell.
How many water (H2O) molecules could you line up end to end in a nanometer?
Answer:Molecules have size and different molecules are different sizes. When talking about the size of a molecule, most scientists will mention its molecular weight. That is the total weight of all of the atoms in the molecule. So water, which is made up of two hydrogen atoms (1 atomic mass unit each) and one oxygen atom (16 atomic mass units) has a molecular weight of 18 (well, 18.01528 to be exact). Glucose has a molecular weight of 180. DNA, which is very long, can have a molecular weight that is around 1010 (about the weight of one human chromosome).
Explanation:
plz help meeeeee!!!!!!!!!!!!!!!!!!!!!!
Answer:
Hey its not much clear!!
Why does the amount of protons and electrons stay the same in stable atoms?
What types of specialized cells are present in both plants and animals???
Answer:
Explanation:
GOOGLE GOOGLE GOOGLE GOOGLE GOOGLE GOOGLE GOOGLE GOOGLE GOOGLE GOOGLE
WILL AWARD 90 points!!
Answer:
Explanation:
theres nothing here but thanks for the points
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I dont see anything.
Match the type of volcano formed to the type magma that most likely formed it.
Answer:
Andesitic and Composite sheild rhyolliticcinder cone basalticExplanation:
Evidence of evolutionary
relationships can be found in the
fossil record.
Agree or disagree
Answer:
Answer is Agree I am pretty sure
Explanation:
When you use the five senses to describe something is ____________________observation.
Answer:brilliant
Explanation:
Different genes control different______ of an organism
Answer:
May you provide the more so I can answer you