A student performs a diffusion lab using a starch/glucose solution, iodine solution, and dialysis tubing (cell membrane). The student waits 10 minutes before making observations. The student reports that iodine moved across the cell membrane. What observation helped the student draw their conclusion?

Answers

Answer 1

Answer:

Diffusion takes place in this process where iodine and glucose molecule diffuses through the dialysis tubing whereas the starch did not. Diffusion takes place on the basis of the size of the molecules.

Starch molecules are large in size whereas iodine and glucose are much smaller therefore they are able to diffuse. If both iodine and starch would have diffuses through the tubing the color would change into dark purple by mixing thee both molecules.


Related Questions

what are NADH and FADH ? why are they important

Answers

Answer:

NADH: High energy electron carrier used to transport electrons generated in Glycolysis and Krebs Cycle to the Electron Transport Chain. FADH2: High energy electron carrier used to transport electrons generated in Glycolysis and Krebs Cycle to the Electron Transport Chain.

Explanation:

Answer:  Here you go!

NADH: NADH is the abbreviation for the naturally occurring biological substance, nicotinamide adenine dinucleotide hydride. ... Often referred to as coenzyme 1, NADH is the body's top-ranked coenzyme, a facilitator of numerous biological reactions.

FADH: Flavin adenine dinucleotide, or FADH2, is a redox cofactor that is created during the Krebs cycle and utilized during the last part of respiration, the electron transport chain. Nicotinamide adenine dinucleotide, or NADH, is a similar compound used more actively in the electron transport chain as well.

WHY ARE THEY IMPORTANT??

ATP production is an important part of cellular respiration (the process of generating energy from food) and both NADH and FADH2 that are involved in this process help in making more ATP. ... NADH and FADH2 that act as electron carriers give away their electrons to the electron transport chain.

why a termeric stain on a white shirt is turned to red when it is washed with soap​

Answers

Answer:

Curry contains turmeric powder and soap is basic in nature. ... Hence, when soap (which is basic in nature) is scrubbed on the stain, the stain turns red. When the cloth is washed with plenty of water, the soap is removed and the yellow colour of the stain reappears.

Explanation:

NEED HELP!!!!!! QUICK PLEASE!

Answers

Answer:

Last one

Explanation:

I took this test

Answer:

its D, it can make earths climates warmer.

Which of the following groups of organs all remove metabolic wastes from the human body?
A esophagus, gall bladder, and pancreas B brain, spinal cord, and salivary glands C skin, bones, and musicales
D skin, lungs, and kidneys​

Answers

Answer:

the correct answer is D

Explanation:

skin excretes sweat; lungs excrete carbon dioxide; kidneys excretes urine so these organs excrete metabolic waste because if you have learnt about the excretory system, you will come to know the process of excretion and how we humans excrete metabolic and toxic waste from the body.

1. Explain how forces of attraction and repulsion exist within an atom.

Answers

Answer:

Oppositely charged particles attract each other, while like particles repel one another. Electrons are kept in the orbit around the nucleus by the electromagnetic force, because the nucleus in the center of the atom is positively charged and attracts the negatively charged electrons.

Explanation:

Answer:

1. Electrons surrounding a nucleus are attracted to the protons within it because electrons and protons have opposite charges. Electrons closest to the nucleus are attracted with such a force that they can’t escape from the atom. These electrons tend to shield the protons from electrons that are farther away because electrons have the same charge and repel each other. Electrons that are farther away have less attraction to the protons within the nucleus and are more likely to be detached from the atom.

2. Electrons can be transferred from atoms of one body to atoms of another body through friction. This can occur when one body is rubbed against another or when a liquid flows across a solid. In either case, one body may be given a positive charge while the other body is given a negative charge of the same magnitude. Both charges are developed at the same time. Electrons can also be transferred from one body to another when a charged body comes into contact with an uncharged body. The electrons move in the direction that will equalize the charges; thus, the uncharged body will be given the same charge as the charged body.

3. Free electrons move from points of negative charge to points of positive charge. When these electrons move freely from one point to another with little resistance, the material they’re traveling through is said to be a conductor. Conductors have a large number of free electrons. Insulators, on the other hand, have very few free electrons and offer great resistance to the movement of these electrons. Electric charges produced on one end of a body composed of insulating materials will most likely not spread throughout the body. In a conductor, this charge would spread throughout the entire body. Metals are generally conductors; oils, rubber, air, porcelain, and plastics are good insulators.

4.

Lightning is produced by the rapid transfer of free electrons when one of the following conditions exist: One part of a cloud is positively charged and a neighboring part of the same cloud is negatively charged. A positively charged cloud comes near a negatively charged cloud. A cloud with either a positive charge or a negative charge comes near the earth.

Explanation:

Pennfoster answer

Why do we exist? Very hard question...

Answers

Answer:

We exist to see if we can past the test God gives us through our lifetime here on Earth. We exist because God put us here on Earth, with the first man being made of clay, and the first woman being made of the clay from the ribcage of the man.

Explanation:

We face many tests in our lives, whether we notice them or not. We are then given praises for passing tests and gain sins for failing tests and doing wrong.

Tests can come in many ways, such as picking up something that someone dropped, being polite, controlling anger, staying focussed, and more.

#teamtrees #WAP (Water And Plant)

To populate the earth :/

Your body needs energy. you eat
but your body can't use that directly so it converts glucose into
which is quick
energy your body can use. This happens in the

Answers

Answer:

take a shower or drink water or take a walk

If the endoplasmic reticulum were removed from the cell,which organelle would not be able to function properly, and why

Answers

Answer:

Golgi apparatus

Explanation:

Because it packages proteins received from the endoplasmic reticulum.

3. After nuclear explosions animals and
humans can continue to die due to
ingestion of radioactive particles and
nuclear
A.fallout
B.rainout
C.whiteout

Answers

Answer:

A

Explanation:

The term was coined from the idea that the radioactive material would mix with the debris thrown in the air from the explosion.

A.fallout pls give brainliest

Pls help! It’s due todayyy

Answers

1- 7%
2- 100 years

4- 50%
I can’t answer 3 because I haven’t seen the video but hopefully this helps :)

Answer:

Explanation:

The first is 7%

The second is 100 years

The Fourth is 50%

Number 3 needs more explanation,

Hope this helps

Which type of cell is found in plants and animals? *
Amniotic
Eukaryotic
Ketonic
Prokaryotic

Answers

Answer:

Eukaryotic

Explanation:

This is the answer because:

Both plant and animal cells are eukaryotic cells, therefore, they contain membrane-bound organelles. For example, the nucleus, mitochondria, reticulum, golgi apparatus, and lysosomes.

Hope this helps!

Answer:

Eukaryotic

Explanation:

just did on flvs\

Explain how a concentration gradient, a membrane protein, and hydrogen ions work together to provide a mitochondrion with the energy needed to join small molecules together. (6 points)

pls help asap :)

Answers

Answer:

you combine all the molicules

Explanation:

A concentration gradient, a membrane protein, and hydrogen ions work together to provide a mitochondria with the energy needed to join small molecules together through ATP. The H+ ions are pumped across by membrane “pump proteins” into a space bounded by memb ranes that contain numerous amounts of hydrogen ions. Then, electrons are passed from o ne membrane-bound enzyme to another, which causes some energy to get lost during eac h transfer. This “lost energy” allows the pumping of hydrogen ions against the concentratio n gradient. After all the steps are taken, the mitochondrion will be provided with the energy needed to join small molecules together.

what are
principle basis on classification​

Answers

Answer:

Classification is a systematic ordering of the object of research, in this case, ecosystems at the earth's surface or, in other words: landscape units as 'holons'. As for general principles of classification, we can learn a lot from the best-known classification, the taxonomical classification of species.

Explanation:

Choose all the answers that apply. The flu _____. is generally milder than a cold is an air-borne illness can cause serious complications is primarily caused by the rhinovirus can be prevented through vaccination

Answers

Answer: is an airborne illness...and can be prevented by vaccination that's all i know, Hoped i helped!

~Zachary

Answer:

I know only 1 of the answer but I ink there is another 1 I know but I don't

remember what and its sneezing and coughing

EXTRA: Also, your girl is waiting for you lol XD

what properties of ocean water determine its ability to scatter or absorb light​

Answers

Wavelengths. only a certain amount of light shines through the ocean. It’s the photic zone

What is the definition of:
Autotroph
Heterotroph
Decomposer
Unicellular
multicellular

Answers

Answer:

Autotroph: an organism capable of making its own food from carbon dioxide.

Heterotroph: an organism that cannot make its own food and thus has to eat either autotrophs or other heterotrophs for energy.

Decomposer: an organism that breaks down dead or decaying organisms; such decomposers are bacteria and fungi.

Unicellular: an organism that consists of one cell, such as bacteria. Some unicellular organisms have a nucleus and are called eukaryotes, while some have no nucleus, such as bacteria, which are called prokaryotes.

Multicellular: an organism that consists of many cells, such as you and I, and many other animals.

Hope this helps :)

Match the following.
1. also known as archaebacteria; prokaryotic organisms with different structures than bacteria; believed to be the most primitive organisms, capable of inhabiting extreme environments
2. the two-name system of naming living things used in classification
3. prokaryotic organisms including bacteria and cyanobacteria
4. a cell that has a membrane-bound nucleus and/or organelles as its major characteristic
5. the form or appearance of an organism; the collection of physical characteristics and the structure which make up an organism; a basis for species definition
6. a cell whose nucleus is not bound by a membrane
7. the separation of populations of organisms by some type of barrier to produce variations of species; no reproduction or exchange of genes occurs between the separated groups; a basis for species definition

Answers

Answer:

1. Archaea

2. Binomial nomenclature

3. Eubacteria

4. Eukaryote

5. Morphology

6. Prokaryote

7. Reproductive isolation

Explanation:

Archaea are microorganisms without a cell nucleus (i.e., prokaryotes), which were originally classified as Archaebacteria. Nowadays, procaryotic organisms are classified into two domains: Archea (Archaebacteria) and Bacteria (Eubacteria). These organisms are characterized by the lack of membrane-bound organelles. On the other hand, the domain Eukaryota consists of organisms that have their nuclei enclosed by a membrane. This domain is divided into four kingdoms: Protista, Plantae, Fungi and Animalia. Binomial nomenclature is a classification system to name species, where the first word of the name indicates the genus of the species and the second part of the name indicates the species within the genus. Finally, reproductive isolation is a term used to indicate physiological, mechanical, behavioral and geographical barriers that prevent interbreeding between two different species.

Consider the survey form in figure 8.2. Based on the information on the survey form,
what hypothesis can you possibly make? Relate demographics to the questions in the
survey form.

Answers

Oky I would love to help you but where is the image

It is best to say that the protection to properties offered by sea walls along coasts _______.
a.
decreases the present and future risk to human properties
b.
increases both the present and future risk to human properties
c.
decreases the present but increases the future risk
d.
increases the present but decreases the future risk


Please select the best answer from the choices provided

A
B
C
D

Answers

Answer: a.  decreases the present and future risk to human properties

Explanation:

Properties along the coasts can be in danger when high tides come in. This can however be mitigated by walls protecting those properties as it would take a significantly high tide (flood proportion) to scale those walls and come in and damage the property.

These walls therefore not only decrease the present risk to human properties but if maintained, decrease the future risks as well.

Answer:

A.

Explanation:

decreases the present and future risk to human properties

Explain how beaches are created.

Answers

Answer:

The waves erode seashells and rocks on the shore into small granuels called sand.

Explanation:

Which is the greatest advantage to asexual reproduction

Answers

Asexual reproduction does not require a partner.

What are the steps in the process of fertilization

Answers

Answer:

The stages of fertilization can be divided into four processes: 1) sperm preparation, 2) sperm-egg recognition and binding, 3) sperm-egg fusion and 4) fusion of sperm and egg pronuclei and activation of the zygote.

Explanation:

As the rate of photosynthesis increases, what do you think happens to the rate at which sugars are produced by the plant?

Answers

Answer:

During photosynthesis, plants use the sun's energy to convert water and carbon dioxide into glucose (sugar), which is used for energy. As the rate of photosynthesis increases, so does the rate the plants make glucose.

As the rate of photosynthesis increases, the rate of sugar production in plants should also increase.

During photosynthesis, green plants utilize the radiant energy from the sun to produce carbohydrates with water and carbon dioxide serving as raw materials.

Carbohydrate in the form of sugar is produced directly from the process of photosynthesis according to the following equation:

[tex]6CO_2 + 6H_2O ---> C_6H_1_2O_6 + 6O_2[/tex]

Thus, if the rate of photosynthesis should increase, it automatically translates to the same increase rate in sugar production, other things being equal.

More on photosynthesis can be found here: https://brainly.com/question/1388366

explain why adding protons to the treated mitochondria increase ATP synthesis?​

Answers

Answer:

Because protons are no longer being used to power the ATP synthase, the proton gradient is not dissipated; the increasingly steep proton gradient makes it increasingly difficult for the electron-transport proteins to pump protons out of the matrix, and electron transport quickly stops.

Explanation:

Hope this helped!

Mitochondria are the power-house of the cell, which are primarily involved in the synthesis of Adenosine Triphosphate (ATP). The synthesis of ATP is mediated by the proton pump and electron transport chain.

The protons generate the gradient, which is produced by the proton-pumping during the electron transport chain. The increase in the mitochondrial ATP production is mediated by the activated SIRT1 and AMPK.

The protons then flow down the concentration gradient into the matrix through ATP synthetase, a membrane protein.

The gradient will cause the spinning and catalyze the conversion of ADP into ATP.

Therefore, the metabolic machinery of the ATP synthesis in the mitochondria will be increased due to the proton pump.

To know more about mitochondria and ATP synthesis, refer to the following link:

https://brainly.com/question/18757196

Which of the following shows a correct base pairing in DNA?
A and G
T and G
C and A
Gand C

Answers

I think it is G and C

Answer: G and C

Explanation:  DNA carries the hereditary information for organisms. W ithout DNA, our species would be unable to pass traits from generation to generation. DNA controls all aspects of an organism. It tells spiders how to spin webs, birds to lay eggs, and what color to make your eyes. The genetic information in DNA is stored as special chemical sequences, called chemical bases. The chemicals bases are adenine (A), guanine (G), cytosine (C), and thymine (T). Each base connects with another to form base pairs. Adenine always pairs up with thymine. Cytosine always pairs up with guanine

26. Evolutionary relationships can be used to answer what kinds of questions?​

Answers

Answer:

To build phylogenetic trees, scientists must collect character information that allows them to make evolutionary connections between organisms. Using morphologic and molecular data, scientists work to identify homologous characteristics and genes.

Explanation:

Answer: structural similarities. factors that help determine evolutionary relationships: these similarities show that species are closely related and may have evolved from a common ancestor.

how do I find the codon and anti codon? :)​

Answers

Answer:

a trinucleotide sequence complementary to that of a corresponding codon in a messenger RNA (mRNA) sequence. An anticodon is found at one end of a transfer RNA (tRNA) molecule.

Explanation:

Cooking Pasta can model a process in cells. Why does cooking dried pasta in boiling water make the pasta soft
A. Heat energy makes the water boil
B. Heat energy makes the dry pasta melt
C. Heat energy causes a concentration gradient to form boiling water
D. Heat energy speeds up the diffusion of water down a concentration gradient

Answers

Explanation:

the answer should be d because of the concentration gradient see if that makes sense

which series lists the structural components of the light-dependents reactions in order, from smallest to largest​

Answers

Answer:

Chlorophyll >thylakoid> grana >chloroplast.

Explanation:

A fungus cell is a prokaryotic cell. True or false?

Answers

A fungus cell is a eukaryotes so it’s false
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