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
malfutka [58]
3 years ago
12

A negative control is a sample that you know will give you a negative result. You are testing for the presence of proteins, redu

cing sugars, starch, and lipids in various foods. What would be the best negative control for this experiment
Biology
1 answer:
lbvjy [14]3 years ago
7 0

Answer:

Starch and water will be the best negative control

Explanation:

Negative control sample is a sample that will not give change in an experiment.

Starch and water will be the best negative control. This is because, starch is broken down by HCl to monosaccharides in the Benedict test which is the test for reducing sugar

Distilled water remain a negative control because it remain blue which means it does not reduce sugar with starch solution.

Water plus us a negative control for Buiret test (protein) and Benedict(reducing sugar) because it does not indicate the presence of protein and reducing sugar.

You might be interested in
What scientists studies biotic factors??
aleksley [76]
The answer would be an Ecologist
6 0
3 years ago
Identify two places in the krebs cycle where a decrease in free energy is coupled with an increase in free energy
-Dominant- [34]
Krebs cycle is <span>the sequence of reactions by which most living cells generate energy during the process of aerobic respiration. It takes place in the mitochondria, consuming oxygen, producing carbon dioxide and water as waste products, and converting ADP to energy-rich ATP.

I hope my answer has come to your help. God bless and have a nice day ahead!


</span>
4 0
3 years ago
Read 2 more answers
A man who smokes heavily has developed lung cancer. The tobacco smoke has caused mutations in some of the cells in his lungs, ma
Naya [18.7K]

Answer:

The correct answer is: B. If he inherited a mutation which made him more susceptible to lung cancer, it may have been present in some of the gametes he produced and passed to his children.

Explanation:

  • The inheritance of genes from the parents to the offspring is mediated by the germinal cells or sex cells or gametes of the parents.
  • The genetic material present in the somatic cells of the parents are not transmitted to the offspring.
  • In the given case, the man who develops lung cancer generates some tobacco smoke induced mutations in some of the cells of his lungs.
  • The cells of the lungs are type up of somatic cells. Hence, any mutations in the genome of these cells will never be transmitted to the offspring.
  • Therefore, the children of the man will never become prone to develop lung cancer due to development of mutations in the lung cells of the man.
  • However, if the man has inherited any mutation from his parents which can increase the risk of development of lung cancer, then these mutations will be present in his germinal cells and also in some of his gametes.
  • Now, if a child is born due to the fusion of the the maternal gamete with one of these mutated paternal gametes, there is an increased chance of developing lung cancer in the child, irrespective of the fact whether he is a smoker or a non-smoker.

3 0
3 years ago
Help me pls thank you
snow_tiger [21]
What does the diagram represent here? I am having trouble understanding
4 0
3 years ago
HELP ASAP! A rectangular photograph has an area of 13425 in² and a width of 1115 in. What is the length of the photograph? Enter
Elis [28]
Convert the mixed numbers into improper fractions and divide:
134 2/5 = 672/5
11 1/5 = 56/5
5/672 * 5/56 = <span>25/37632
the answer is </span>25/37632
4 0
3 years ago
Read 2 more answers
Other questions:
  • In a population of 75 mice, what would be the size of their gene pool for a particular gene?
    12·1 answer
  • I need some help with<br><br> “Main purpose of process”
    9·1 answer
  • True or false: Flatworm tend to be smooth and dry? ​
    14·1 answer
  • The ability of the heart and lungs to supply oxygen to the body is called
    13·1 answer
  • This type of tissue allows for rapid communication between various parts of the body
    7·1 answer
  • Select all that apply.
    10·1 answer
  • What are the products of photosynthesis ?
    9·2 answers
  • This portion of the vestibular apparatus is responsible for dynamic equilibrium.
    5·1 answer
  • I love getting no help and when I do I get wrong answers &lt;3 got a 60% on my quiz thanks a lot!
    9·1 answer
  • Carbohydrates
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!