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
Tasya [4]
3 years ago
9

What were your controls for this experiment? what did they demonstrate? why was saliva included in this experiment?

Biology
1 answer:
Vlad1618 [11]3 years ago
4 0

Positive control is Ginger root (should indicate the presence of amylase)

Negative control is Cellulose (should not contain amylase)

Here the presence of amylase is tested by testing the presence of starch using an IKI solution. Saliva is included in this experiment because it contains the enzyme amylase.

You might be interested in
Which cell junction prevents the movement of solutes between the cells of an epithelial layer?
Fudgin [204]

Answer:

Gap junctions

Explanation:

Gap junctions form pores that connect adjacent cells. In this way signaling molecules, ions and other substances can pass through the pore to the adjacent cell. This type of cell junctions are important in cardiac muscle responses, in brain signaling, during childbirth, etc.

5 0
3 years ago
If I am in level virtuoso and I can send direct message but to whom I am sending has not completed that level. Then too will I b
PIT_PIT [208]

Answer:

Even if you aren't friends with that account, I believe they will be able to receive the message. :)

Explanation:

8 0
3 years ago
Read 2 more answers
What makes plants wilt?
denpristay [2]

Answer:

A

Explanation:

Due to the hot weather the plants moisture start to decrease until they wilt.

7 0
2 years ago
How are revolution and orbit alike?
irga5000 [103]

Answer:

Change in direction

Explanation:

"Rotation" refers to an object's spinning motion about its own axis. "Revolution" refers the object's orbital motion around another object.

7 0
3 years ago
When a cell is infected by a virus, __________ is produced and is secreted from the infected cell to protect nearby uninfected c
Veseljchak [2.6K]

Answer:

The given blank can be filled with interferons.

Explanation:

The signaling molecules or the proteins that get discharged by the cell infected by the virus to protect the adjacent cells by stimulating a safeguarding defense mechanism are termed as interferons.  

The mentioned proteins obstruct the proliferation of viruses and thus helps the cell in getting rid of the infection. These molecules also assist in stimulating the macrophages and the natural killer cells.  

3 0
3 years ago
Other questions:
  • Select all that apply. Our chemoreceptors are mostly for tasting while other animals use them for _____. finding food finding ma
    15·2 answers
  • By calculating genetic distance, and using rate of change from molecular clock, researchers can estimate when two lineages diver
    13·1 answer
  • 1. What was the worldwide avemge life expectancy in 2000?
    10·1 answer
  • Describe the importance of the Hubble Telescope.<br> Enter your answer in the space provided.
    5·1 answer
  • Helpppppp !!!!!!!!!!​
    8·1 answer
  • When DNA is duplicated during mitosis
    13·1 answer
  • Most chemical reactions consist of sequences of two or more simpler reactions.
    8·1 answer
  • Why might a nymph have a diet more like that of an adult than does a larva? SAMPLE RESPONSE WHOEVER ANSWERS CORRECTLY GETS BLAIN
    15·2 answers
  • What phase is the moon in when it is not visible in the night sky?
    10·1 answer
  • Which of the following is not a defining charecteristics of plants ?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!