1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Natali5045456 [20]
4 years ago
5

A selectively permeable membrane divides a container in half. One half of the container. Side A, is filled with a starch solutio

n, while whe other half, Side B, is filled with an iodine tincture. Starch is a large macromolecule that forms a milky white solution when dissolved. An iodine tincture contains very small iodide ions and is a brown solution. lodide ions turn dark blue when they react with starch molecules After several hours, Side A is dark blue, while Side B is brown. Which statement describes the diffusion of solutes through the membrane? ded the iodide ions, but the starch mol O Both the starch molecules and the iodide ions diffused through the membrane O The membrane excluded both the starch molecules and the iodide ions O The membrane excluded the starch molecules, but the iodide ions diffused through
Biology
1 answer:
vivado [14]4 years ago
8 0

Answer:

The membrane excluded the starch molecules, but the iodide ions diffused through

Explanation:

The diffusion of substances always occurs from the region of higher concentration to the region of their lower concentration.

According to the given information, starch is a large macromolecule. Reaction of iodide and starch turns iodide ions dark blue. Since the side A of the container turned dark blue, it means that iodide ions diffused through the membrane from side B to side A. It turned the side A dark blue.

If starch would have diffused from side A to side B through the membrane, the side B would also have turned dark blue. However, side B had a brown solution. Therefore, the large molecules of starch were not allowed to pass through the membrane.

You might be interested in
What are the consequences of coastal pollution?
salantis [7]

Answer:

1. Damage to Mangrove Ecosystems and Coral Reefs.

2. Coast Damage.

3. Death of Biological Resources.

Explanation:

pollution itself is bad

8 0
3 years ago
Mitochondria are thought to have evolved from ancient bacteria. which characteristics of a free-living bacteria have mitochondri
olganol [36]

Mitochondria are thought to have evolved from ancient bacteria. Free-living bacteria have lost motility in mitochondria over time.

<h3>What is endosymbiosis?</h3>
  • Endosymbiosis is the term used when one organism truly lives inside the other. According to the endosymbiotic theory, it is simple for a big host cell and ingested bacteria to become dependent on one another for survival and develop a long-term bond.
  • Due to their increased specialization through millions of years of evolution, mitochondria and chloroplasts can no longer survive outside of cells.
  • Chloroplasts and mitochondria are remarkably similar to bacterial cells. They have unique DNA that is distinct from the DNA found in the cell's nucleus.
  • Additionally, these organelles synthesize numerous proteins and enzymes necessary for their functions using DNA. Both mitochondria and chloroplasts are surrounded by a double membrane, which is additional proof that each was ingested by a primitive host.
  • Similar to bacteria, the two organelles also divide by themselves and replicate their own DNA.

Learn more about the endosymbiosis with the help of the given link:

brainly.com/question/15829977

#SPJ4

4 0
2 years ago
Suppose there are 500 units of energy available at the producer level of the energy pyramid. Approximately how many units of ene
shusha [124]
The answer to this question with the options presented in the problem would be A. 50.

It is said by experts that in the energy pyramid, 90% of energy is lost for life processes such as photosynthesis, respiration, and the like. So this means that only 10% will remain for the consumer to have. That would be saying that if suppose there are 500 units of energy available at the producer level of the energy pyramid, to get the units of energy available to the first-level consumer is  to have the 10% of 500 which is 50.
6 0
3 years ago
Read 2 more answers
Explain why the beginning of the rainy season is the best time to perform grafting??​
mr Goodwill [35]

Answer:

The best time of grafting is 1–2 months before leaf flushing when the scions have dormant vegetative buds, i.e. the dry season just before the onset of the wet season; or in cool climates the cool season just before the onset of the warm season (spring). 

Explanation:

hope it is helpful

6 0
3 years ago
What effect did the development of the first forests have on carbon dioxide in the atmosphere?
Sladkaya [172]
It decreased the amount of carbon dioxide in the air and increased the amount of oxygen because plants go through photosynthesis and convert carbon dioxide to oxygen in the process. 
8 0
4 years ago
Other questions:
  • In the 1920s, walter cannon discovered that emotion-arousing incidents trigger an outpouring of ________ from the adrenal glands
    6·1 answer
  • Which statement about vacuoles is true
    14·1 answer
  • 6. Soils are to be considered a "living" organism, although it is an abiotic factor. The slide on soil
    7·1 answer
  • You have finished performing a procedure in the biology lab and now need to dispose of a plastic test tube that contains the sam
    9·1 answer
  • The warmer the temperature is outside the more mosquitoes that are flying around
    11·1 answer
  • If you can answer this I’ll love you forever
    15·1 answer
  • I need help yahll guys
    8·1 answer
  • Based on the picture below, answer the following T/F questions. Explain your answer. a. The two chromosomes on the left (#1) are
    10·1 answer
  • A zookeeper is very upset because one of the lions jumped the fence of his enclosure and mated with a neighboring tigress. This
    9·1 answer
  • What type of inheritance does the “thumb gene” follow? Choose a claim below.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!