![Quickshotgirl](/avatars/26543.jpg)
Quickshotgirl
12.02.2020 •
Biology
In 1925, scientists exploring how lipids are arranged within cell membranes performed a key experiment using red blood cells. Using benzene, they extracted the lipids from a purified sample of red blood cells. Because these cells have no nucleus and no internal membranes, any lipids they obtained were guaranteed to come from the plasma membrane alone The extracted lipids were floated on the surface of a trough filled with water, where they formed a thin film. Using a movable barrier, the researchers then pushed the lipids together until the lipids formed a continuous sheet only one molecule thick The researchers then made an observation that led them to conclude that the plasma membrane is a lipid bilayer. Which of the flowing would have allowed the scientists to come to this conclusion?
Choose one:
The extracted lipids covered half the surface area of the intact red blood cells.
The extracted lipids covered the same surface area as the intact red blood cells.
When pushed together, the extracted lipids dissolved in water.
The extracted lipids covered twice the surface area of the intact red blood cells,
Solved
Show answers
More tips
- C Computers and Internet Can You Insert a Regular SIM Card into an iPad? Let s Find Out...
- F Food and Cooking Лечо: вкусное и простое блюдо для любой кухни...
- H Health and Medicine Relieving Swelling in Legs: Causes and Ways to Alleviate the Symptom...
- S Style and Beauty How to Get Rid of a Bruise: Tips and Tricks...
Answers on questions: Biology
- M Mathematics Challenge Three - Loans Create a chart comparing private and federal loans, and include the definition of each, payment plan, and benefits. Which one fits your needs most closely?...
- B Biology Which of the following is a characteristic of an ionic bond? a. an element shares electrons with another element. b. an element loses a proton to another element. c. an element gains...
- M Mathematics HELP ME ANSWER THIS QUESTION QUICKLY BEFORE KATIE REMOVES IT FOR SOME RANDOM REASON. like idk but shes been removing my other ones :/...
- B Biology The brain is malleable during early childhood before pruning is complete. this is called...
Ответ:
The extracted lipids covered twice the surface area of the intact red blood cells.
Explanation:
In 1925 two dutch scientist performed this experiment and they come to know that the basic structure of the membrane is phospholipid bilayer which serves as a stable separator between the two sections. Thats why the lipids they had extracted was covered twice the surface area of the intact red blood cells.
Ответ:
A genome is a complete set of dna(genetic information) and contains all of an organisms genes.It is found in the nucleus.