An experiment was conducted to demonstrate the passage of glucose and starch across a selectively permeable membrane that allows monomers but not polymers to diffuse through.
Glucose and starch powders were mixed in 10 ml of water and poured into a cellulose bag, which was then sealed at both ends and placed in a beaker of water. After 30 minutes, the presence of glucose in the beaker was recorded with a testing paper, which turns green if glucose is present. The presence of starch was recorded by adding a few drops of iodine, which causes the solution to turn violet if starch is present.
A beaker filled with 100 milliliters of distilled water. A bag filled with 10 milliliters of water and a solution of 2 percent glucose and 2 percent starch is placed in the beaker of water.
Which statement best describes the expected result?
A) The testing paper will turn green and the solution will turn violet.
B) The testing paper will turn green and the solution will not turn violet.
C) The testing paper will not turn green and the solution will turn violet.
D) The testing paper will not turn green and the solution will not turn violet.
Answers
Answer:
B
Explanation:
because if you read the first paragraph, the membrane will only allow monomers not polymers. glucose is a monomer and starch is a polymer. so the membrane will only take glucose and the color for glucose therefore the color is only green.
Related Questions
Which of the following parts of a plant is (are) not digestible by humans?
Answers
Explanation:
Your body is unable to digest cellulose and, as a result, it passes through your digestive tract unchanged and is eliminated in bowel movements. Bran, legumes, nuts, root vegetables and apples are particularly high in cellulose and hemi-cellulose
Hi, how are you? I hope you are well. Can you answer this question? What does it mean to say that a rock is porous?
The rock has many holes.
The rock has few holes.
The rock has tiny holes.
The rock has big holes.
Water can easily flow through the rock.
Water cannot easily flow through the rock.
Answers
the answer if it is not multiple choice is i believe the rock has many holes
if it is multiple choice u should also select water can easily flow through the rock
not sure if i am right
Analogous structures have the _______ structure, ________ funtion.
Answers
Answer:
Analogous structures have the Different structure, same function.
For example: wings of insects and birds
Think about death rates and birth rates in a population. How will
the two compare in a shrinking population?
SELECT AN ANSWER
The birth rate will be larger.
Both will be equal to one another.
Neither has an affect on the population.
The death rate will be larger.
Answers
Answer:
it will compare that neither has an affect on the population and it will also compare that both will be equal to one another.Hope this helps let me know if its wrong or not have a good day.
Explanation:
It will compare that neither has an affect on the population and it will also compare that both will be equal to one another.
What is population?The term "population" refers to all citizens who are either permanently residing in a country or who are just passing through. This indicator reveals how many people typically reside in a certain area.
Growth rates are the population changes that occur each year as a result of births, deaths, and net migration.
The total population also includes national military forces deployed overseas, merchant mariners at sea, diplomatic staff based abroad, civilian foreign nationals residing in the nation, and internally displaced people residing in the nation. Demographic tools like population predictions are frequently used.
Therefore, It will compare that neither has an affect on the population and it will also compare that both will be equal to one another.
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Which surface erosion event does the most short-term damage?
Answers
Answer:
splash erosion.
Explanation:
Which of the following plant structures allows plants to take in the carbon used in photosynthesis?
Which of the following plant structures allows plants to take in the carbon used in photosynthesis?
roots
vascular bundles or veins
stomata
cuticle
chloroplasts
Answers
Answer:
Stomata
Explanation:
Photosynthesis is a unique phenomenon in certain organisms like plants. It is the process whereby they produce their food, in form of an organic compound called GLUCOSE. To synthesize this sugar, plants need a carbon source.
Plants utilize carbon dioxide (CO2), which is an inorganic carbon compound as CARBON SOURCE to synthesize glucose molecule in the process of photosynthesis. This carbon dioxide (carbon) is taken in by the plants via their STOMATA, which is a pore or opening present on their leaves.
The STOMATA opens and closes in order for gaseous exchange to occur i.e. take in CO2 (carbon dioxide), expel O2 (oxygen).
Answer:
stomata
Explanation:
edge for intro to Ag
Which statement best describes the relationship of photosynthesis and energy?
The process of photosynthesis is energy-storing because the process converts light energy into chemical energy,
which is stored in the bonds of glucose.
The process of photosynthesis is energy-releasing because the process converts light energy into free energy that
can be used for cell functions.
The process of photosynthesis is energy-conserving because no energy is used throughout the process of forming
glucose and oxygen molecules.
The process of photosynthesis is energy-wasting because photosynthesis is an inefficient process that depletes the
cell of energy stored in the bonds of glucose.
Answers
Answer: The process of photosynthesis is energy-conserving because no energy is used throughout the process of forming glucose and oxygen molecules.
Explanation: Plants create glucose through sunlight for food, which conserves energy
Which of the following relationships is incorrect
Answers
Chloroplast is not a site of lipid synthesis, it is the site of performing photosynthesis Therefore, option A is correct.
What are chloroplasts and their functions?An organelle found in the cells of plants and some algae called a chloroplast is where photosynthesis, the process by which solar energy is transformed into chemical energy for growth, takes place.
All green tissues in plants and algae contain chloroplasts in their cells. In photosynthetic tissues that don't appear green, such as the brown blades of gigantic kelp or the red leaves of some plants, chloroplasts are also present.
Thus, the cell wall provides support and protection to the cell, rough ER is the site of protein synthesis, the nucleus holds genetic material, and the chloroplast is the site of photosynthesis. Therefore, option A is correct.
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Cellular (aerobic) respiration takes place in the presence of and with the use of a certain element.
Which element is it?
carbon dioxide
water
sunlight
oxygen
Answers
Answer:
It's oxygen
Explanation:
The oxidation of glucose takes place which simply means burning in oxygen. So...
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Paleomagnetism is..
A. The equipment tied to boats to measure their depths
B. The rock that solidifies from mid ocean ridges
C. The evidence that fossils across continents matched
D. The study of the magnetic qualities of ancient rocks
Answers
Answer:
C. The evidence that fossils across continents matched
Explanation:
How is Organismn A different than Organism B?*
Answers
Answer:
okay its kinda hard to see, but it looks like both have a cell wall and a nucleus. As far as i can see there is no dna in B
Explanation:
Because not both of them have a cell wall
Filled-in symbols in the pedigree that follows designate individuals suffering from deafness.a. (2 points) Study the pedigree and explain how deafness is being inherited.b. (2 points) What is the genotype of the individuals in generation V
Answers
Answer:
According to the pedigree, It is clear that the F1 generation is not affected but their offspring are affected in F2, which explains that the deafness presented with the pedigree is recessive. It should be an Autosomal recessive inheritance as it is found in both male and female offsprings.
As it is found that the parents are affected in 5th gen and 6th generation but their offspring are not affected which means there must be more than one genes controlled this disorder
B. In 5th generations mentioned above offspring is unaffected but parents are affected, to find the genotype of the individual let assume there are two genes responsible for it A and B, and mutation in any one of them can result in deafness.
So in IV generation Individuals 5 and 6 have genotypeAAbb and aaBB; both are deaf.
gametes:- Ab & aB.
So, the genotype of all offsprings will be AaBb means all are normal.
Deafness is an autosomal recessive disorder as the first generation is unaffected and the genotype of the fifth generation is AaBb.
What are pedigree and genotype?Pedigree is a chart representation of the phenotype of specific genes of the organism and its inheritance from the ancestral family. The pedigree can be used for the analysis of the heritable disease and illness in the family root.
The deafness illness in the pedigree is recessive as the first generation of the pedigree remains unaffected but the later generation is affected and is diseased.
From the chart, deafness can be said to be an autosomal recessive disorder as some generations are unaffected and in some the disease is present. More than one gene is controlling the disease as the fifth and sixth generations are affected but not their offspring.
The parent of the fifth generation are affected but their progenies are normal to know the genotype let's assume the genes A and B to be responsible for the disease and the mutation in any one of the alleles will result in deafness.
Hence, the genotype of the parents 5 and 6 in the fourth generation will be AAbb and aaBB as both of them diseased or deaf, the offsprings produced from their cross will be AaBb that is all the offspring of the fifth generation will be normal and unaffected.
Therefore, the genotype of the fifth generation in the pedigree is AaBb.
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What are three reasons that organisms interact?
Answers
Answer:
mating, competition for food resources, defense, and assertion of dominance.
Explanation:
The three reasons that organisms interact are
For the purpose of matingCompetition for food resourcesDefenseThe above mentioned reasons are responsible for interaction of organisms.
What are the reasons for interaction of organisms?There are several reasons for interaction of organism and the most important reason is for survival.
Organisms also interact for the process of reproduction due to which they reproduce their own young ones.
Organisms also interact for the purpose of food and other essential requirements to survive.
Organisms are capable of growth,differentiation,reproduction,maintenance and response to stimuli.
Therefore,The three reasons that organisms interact are
For the purpose of matingCompetition for food resourcesDefenseThe above mentioned reasons are responsible for interaction of organisms.
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Enzymes decrease the activation energy needed for a reaction.
True
False
Answers
Answer:
true false
Explanation:
Answer:
True
Explanation:
I dont really have one. But it's true.
What type of organic compounds store the most energy per molecule?
lipids
O carbohydrates
O proteins
O nucleic acids
O Lipid Acids
Answers
Answer:Lipid Acids
Explanation:
what's the name of the mosquito that causes malaria? I just wanna be sure
Answers
How many essential amino acids must be obtained from food?
a)8
b)20
c)12
d)26
Answers
Answer:
I believe the answer is c)12
Answer:
8 or 9
Explanation:
How is energy stored in the ATP molecule?
O in the chemical bonds holding the nitrogen base together
O in the chemical bond holding the sugar to the nitrogen base
in the chemical bonds holding the sugar molecule together
O In the chemical bonds holding the phosphate groups together
Answers
whats 200 to the power of ten
Answers
Answer:
1.024e+23
Explanation:
Which of the following kinds of questions cannot be answered within the limits of science?
Answers
Is water abiotic or biotic?
Answers
Answer:Abiotic
Explanation:
There are two categories of these factors: abiotic and biotic. Abiotic factors are the non-living parts of the environment that can often have a major influence on living organisms. Abiotic factors include water, sunlight, oxygen, soil and temperature.
which of these is a pure substance that cannot be broken down by a chemical reaction?
Answers
Answer: Element
Explanation: An element is a pure substance that cannot be separated into simpler substances by chemical or physical means.
Each element has unique physical and chemical properties.
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Fill in the word that completes each sentence.
Food contains a sugar called
which is broken down in a process called cellular
This process uses
to break down food molecules and provide energy for cells.
Intro
Done
Answers
Answer:
The correct answer is - glucose, respiration and oxygen in order.
Explanation:
The food we eat contains various nutrients mainly, carbohydrates, protein, and fat. The carbohydrate that is we eat has glucose as the primary product and also the substrate in the process known as cellular respiration.
Cellular respiration is a process in which glucose molecules are broken down in order to provide energy in the form of ATP with the help of oxygen. It is called aerobic respiration as it required oxygen for the complete oxidation of the substrate.
Answer:
Glucose respiration oxygen
Explanation:
1
2
3
4
5
Definition: This system receives and transmits information and responses. It depends upon electrical
impulses created by the movement of charged particles.
Example: The brain is part of this system.
Term:
Subm
Organization of Living S
7.L.3.B.1) Multicellular Or
L3B.2) Human Body
Hint
Answers
Answer:
System that receives and transmits information and responses, in addition to work with electrical impulses is the Nervous system.
Explanation:
The nervous system (NS) is responsible for the control of all the organs and functions of the body. The neuron is the functional unit of this system, allowing the transmission of information through nerve impulses, generated by the difference in potential of its cell membrane.
NS is divided into:
Central nervous system (CNS) —where the brain, spinal cord and other structures are located— in charge of receiving, processing and sending information. Peripheral Nervous System (PNS), a network of nerve fibers in charge of receiving the stimuli and conducting the information to and from the CNS.The integration of both NSC and NSP allows an organism to fulfill all its functions, both voluntarily and involuntarily.
Can somebody help me match them
Answers
Deforestation = the 3rd option
Desertification = 1st option
What’s the correct order?
Answers
3. Which of the following statements explains the importance of carbon in cells? (Choose all that apply
Answers
carbon is a waste products for a cell.
i just took the test
The statement that explains the importance of carbon in our cells is that carbon affects the function of the cell. So the correct option is A.
What is the importance of carbon?
The most common chemical element present on our Earth is carbon. It has the symbol C and an atomic number of 6. The carbon atom is a member of the fourteenth group present on the periodic table.
The word carbon is derived from the Latin word 'carbo', which means coal. Carbon is also the 15th most abundant element that is present in the crust of the Earth. On the earth, carbon is the fourth most abundant element ranked after hydrogen, helium, and oxygen.
Carbon atoms, when bonded together in different ways, are called as allotropes of carbon. Diamond, graphite, and amorphous carbon are the three allotropes of carbon.
They have different properties. Graphite is one of the softest known substances while diamond is the hardest known substance.
Therefore the correct option is A.
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QUESTION 1
1 pol
Which of these is an example of quantitative data?
A scientist test for the presence of starch using an iodine test that changes color if starch is present but does
not indicate how much starch is present.
O A scientist asks human subjects taking a new medication how much better they feel on a scale of 1-5.
Scientists record how a liquid smells to them at the end of an experiment.
A scientist measures the change height in plants that were watered with different levels of nitrogen
Answers
Answer:
A scientist test measures the change height in plants that were watered with different levels of nitrogen is an example of quantitative data
5. What happens to the force between the two spheres of the same
mass when the distance the mass Spheres is halved?
Answers
Answer:
The force of gravity on each object increases with the square of the inverse distance as they fall together, and hence so does the acceleration. For example, if the distance is halved, the force and acceleration are quadrupled.
Explanation:
why are humans not an invasive species
Answers
Answer:
Originally Answered: Are humans considered an invasive species? No, because the term is generally applied only to species that were introduced to an ecosystem and cause harm. Humans were not introduced to any ecosystem. Instead, humans underwent what is called a 'natural range expansion.
Explanation:
Hope that helped if it did please give me brainiest Thanks! <333 :3
Hello!
They are not an invasive species because the term is generally applied only to species that were introduced to an ecosystem and cause harm. Humans were not introduced to any ecosystem. Instead, humans underwent what is called a 'natural range expansion.