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
nlexa [21]
3 years ago
9

Two students set up experiments looking at diffusion of starch, glucose, and iodine across a selectively permeable membrane. The

first student put starch and glucose inside the dialysis tubing and water and iodine outside the dialysis tubing in the beaker. After 30 minutes, she observed that the iodine diffused into the dialysis tubing, where it reacted with the starch and turned a dark blue-black color. The second student thought he set the experiment up the same way, but he did not observe a color change. What is the most likely mistake that he made when setting up the experiment?
Social Studies
2 answers:
AVprozaik [17]3 years ago
6 0

Answer:

answer is C

Explanation:

Starch requires ATP energy for transport and therefore cannot cross the dialysis tubing into the iodine solution.

Valentin [98]3 years ago
4 0

Answer: The second student set up solutions that were in equilibrium.

Explanation: Dialysis is based on the principles of osmosis, meaning the net movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration. If the solute concentrations are the same on each side of the membrane, this spontaneous movement will not occur.

You might be interested in
The media can affect us even if we are not aware that we are being influenced by it.
xxMikexx [17]
<span>The question is asking us whether it is true that the media can affect us even if we are not aware that we are being influenced by it. This is true. Think for example of smoking: if you see positive personas smoke on screen (that is, people in movies who are presented in a positive light), you might develop positive associations with smoking, even if you are not thinking about it consciously.</span>
6 0
3 years ago
True or False: Impaired individuals believe their judgment is fine, or perhaps better than normal.
34kurt
This is true - people who have impaired cognition will believe that their judgement is fine while it in reality isnt. It's either worse than normal or suboptimal at least. In no way, though, is it average or above average. 
6 0
3 years ago
Read 2 more answers
According to the criteria for IRB approval, when considering equitable treatment of subjects, special care must be taken with wh
kirill [66]

The correct answer is letter C

An institutional review board (IRB) is a panel of individuals who oversee research on human beings. IRBs can be seen in educational institutions that conduct research on human beings, along with pharmaceutical companies, hospitals and other organizations that use human beings in their research. The purpose of an institutional review board is to evaluate all proposed studies with human beings to confirm that they adhere to ethical guidelines, monitor ongoing research and periodically audit researchers, ensuring that all research carried out at the institution is legal and ethical.

8 0
4 years ago
Dave is the owner of cohen's sassy designs. He takes great effort to make sure that his employees know that if he promises a rew
Shtirlitz [24]

The proprietor of Cohen's Sassy Designs is Dave. He takes great effort  to ensure that his workers are aware that he will always fulfil his word if he makes a reward promise. In this case, Dave seems to believe in Expectancy theory.

According to expectancy theory, people are more motivated to work hard if they believe their additional effort will be noticed and rewarded. Performance-based compensation can tie benefits to the quantity of work that employees produce.

People working harder because they feel the extra effort will help them achieve a goal and be rewarded is one of the most prevalent expectancy theory instances.

Learn more about reward here

brainly.com/question/14222505

#SPJ4

3 0
2 years ago
What kind of ruler is Justian towards his people?
suter [353]
He was a prime minister
3 0
4 years ago
Other questions:
  • Generation X consumers indicate they want online customer support; websites that are comprehensive, professional, and interactiv
    14·1 answer
  • The nurse is providing care for a client who is a Muslim. The client has recently received a diagnosis of type 1 diabetes and is
    12·1 answer
  • While waiting for a bus, witnesses hear a man growing increasingly frantic as he cries, "My nitro tablets. Where are my nitro pi
    11·2 answers
  • In the context of formal communication channels, _____ is used to encourage lower-level managers and employees to participate in
    13·1 answer
  • In process​ costing, ________​ is/are found by taking the number of partially completed physical units and multiplying it by the
    14·1 answer
  • Although the American Psychological Association (APA) has the primary responsibility for accrediting Ph.D. or Psy.D. psychology
    6·1 answer
  • Much of the basic criminal law of this country originated from the common law of:
    9·1 answer
  • What is the per capita GDP of Cuba? Be sure to indicate the calendar year that this information represents.
    10·2 answers
  • Who answers the 3 economic is in Canada? What kind of economic freedoms?
    12·1 answer
  • Ten-year-old Alexis and her friend Chloe have been spreading untrue rumors around school about their classmate Ginger because th
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!