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
Lilit [14]
3 years ago
6

Greg and Andrea are trying to find out how long it takes amylase, a digestive enzyme found in saliva, to break down a sample of

starch. They put their sample in a beaker and covered it with their own saliva. After allowing it to sit on the lab table for 1 hour they measured the remaining surface area of the starch. What is the best way they could improve their experiment?
Biology
2 answers:
enyata [817]3 years ago
8 0
The answer is: the amount of the saliva samples must stay consistent while the amount of starch must vary.

The amount of the saliva samples must stay consistent because amylase, present in the saliva, is the independent variable which affects the dependent variable - the amount of starch. So, amylase will do its job while remaining surface area of the starch will depend on the starting amount of the starch.
Umnica [9.8K]3 years ago
8 0

The relationship between a dependent variable and independent variable in a scientific investigation is that the dependent variable depends on the independent variable. You can also put it this way: The results depend on the factor of the experiment that differs from the controlled group.


This is why the best way they could improve their experiment is by taking consistent amounts of their saliva samples with varying amounts of starch.

I hope it helps, Regards.

You might be interested in
What is the energy conversion that takes place during photosynthesis?
Juli2301 [7.4K]

Answer:

potential energy to kinetic energy

3 0
3 years ago
Read 2 more answers
Atp is much better at doing what​
allochka39001 [22]

ffyrtdrtfdckttftfctyytftfftdeededtgtgvgkgyhkjktgjtgtfjcfvcfcseg bnmvgfgfchftgytgyvg  nhvcjhjjryxchevdrftloiuymhecdfhgjlj

5 0
3 years ago
How are radioactive isotopes used to date rocks? ...?
Stolb23 [73]
Some isotopes, however, decay slowly, and several of these are used as geologic clocks. Dating rocks by these radioactive timekeepers is simple in theory, but the laboratory procedures are complex. <span>All methods rely on the fact that certain elements (particularly uranium and potassium) contain a number of different isotopes whose half-life is exactly known and therefore the relative concentrations of these isotopes within a rock or mineral can measure the age.</span>
8 0
3 years ago
PLZ HELP What would happen if a cell dissolved in water like sugar does
Ugo [173]

Water would move from outside to the inside of the cell through the semi permeable cell membrane and cause the cell to swell.

3 0
3 years ago
The normal range of blood glucose is 70–120 mg/dL. A person has a blood glucose level of 170 mg/dL. Based on your knowledge of t
kifflom [539]

Answer:

The normal range of blood glucose is 70–120 mg/dL. A person has a blood glucose level of 170 mg/dL. Based on your knowledge of the endocrine system and hormones, explain the likely cause for the person's condition.

It could be as a result of high sugar intake which increases the individual's blood glucose level

Explanation:

From the assertion above, it could be deduced that the individual pancrease is no more functioning hence; no control of blood glucose level. Furthermore, the continuous intake of sugar or food materials with high sugar content contributes excessively to increase the blood glucose level in the body.

6 0
3 years ago
Other questions:
  • How does natural selection change the frequency of genes or traits over many generations? Biology students conducted an experime
    8·2 answers
  • Major consequence of ozone depletion is that
    10·2 answers
  • Please select the word from the list that best fits the definition a ridge-like deposit of sediment at the edge of a glacier
    11·2 answers
  • What is one distinct DISADVANTAGE of sexual reproduction?
    13·1 answer
  • 3. Which of the following is a characteristic that could be applied to both living and nonliving things? (1 point)
    11·1 answer
  • Immune response to a common cold
    12·1 answer
  • The organism at location D is the _______ to<br> organisms at location A, B, and C.
    7·2 answers
  • How are plants classified?
    14·2 answers
  • What does the word autotroph mean? Self food Self nourishment Other nourishment<br>PLZZ HELP!!​
    8·2 answers
  • (drag and drop) (20 points)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!