answer.
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
pashok25 [27]
2 years ago
8

A laboratory assistant prepared solutions of 0.2 M, 0.4 M, 0.6 M, and 0.8 M sucrose but forgot to label them. After realizing th

e error, the assistant randomly labeled the flasks containing these four unknown solutions as flask A, flask B, flask C, and flask D. To determine the concentrations of each solution, the assistant filled four dialysis tubes with the four different solutions, took their initial masses, and placed each tube into distilled water overnight. The next day, the masses of each dialysis tube again were recorded. Using the data below, determine which concentration of sucrose solution is in each flask.
Biology
1 answer:
Debora [2.8K]2 years ago
6 0

Answer:

To determine the flask on basis of the molarity or concentration of the solutions, an individual should design an experiment with the help of using water and dialysis tubes. Dialysis tubes up should be filled with pure water, then seal or closed them from both ends.

Measure the weight and note the mass of each tube, student should stick label the cups with the solutions. Weighing the solutions after leaving them for 8 to 10 hours. The tubes would lose weight as water leave the tube when placed in the solutions due to the principle of diffusion- movement.

You might be interested in
Which of the following represents the correct flow of air into the lung of a mammal?
7nadin3 [17]

I believe the answer would be A.

The flow is larynx, trachea, bronchi, bronchioles, alveoli

3 0
2 years ago
15
s344n2d4d5 [400]

OPTIONS:

a. When there are just two other people at the party.

b. When everyone is wearing a nametag.

c. When there are more than 50 people attending the same party.

d. When the need for help from the person who is having a heart attack is very clear

Answer:

c. When there are more than 50 people attending the same party.

Explanation:

Bystander effect is a term used in social psychology to describe the tendency of an individual to intervene in the event of an emergency to offer help to the person needing it, when others are present at the scene of the emergency.

In the case of an emergency just like the scenario stated in the question, where someone develops a heart attack at a dance party, if the party has more people, the slimmer the chance of the person getting help from any of the 50 people at the party, as the presence of others would tend to discourage the any individual from attempting to help the victim having the heart attack.

The situation that would more likely show the bystander intervention effect is <em>"c. When there are more than 50 people attending the same party."</em>

5 0
2 years ago
- Why does a male bird displays his colorful feathers? (1 point)
riadik2000 [5.3K]

Answer: To attract a Mate

Explanation: In competition, males use feather color to warn potential rivals that they occupy a piece of territory. When it's time to mate, male birds show off their plumage to attract a mate. In experiments, female birds prefer males with more fanciful feathers, or brighter colors.

4 0
2 years ago
In all cells, separation of replicated chromosomes is a prerequisite for cell division. However, the mechanism of chromosome sep
Elina [12.6K]

Answer:Eukaryotes only (A) and (D), bacteria only (E) both (B) and (C).

Explanation:

(A) Only eukaryotes have a nucleus.

(B) Both replicate the DNA before performing cell division, so each cell keeps a copy.

(C)  This structural feature is called centromere in eukaryotes and in bacteria this role is played by the origin of replication.

(D) Centromeres are eukaryotes exclusive.

(E) Only bacteria have a replication origin.

7 0
2 years ago
Alkaptonuria is an infrequent autosomal recessive condition. It is first noticed in newborns when the urine in their diapers tur
Arisa [49]

Answer:

See the answer below

Explanation:

Let the disorder be represented by the allele a.

Since the disease is an autosomal recessive one, affected individuals will have the genotype aa and normal individuals will have the genotype Aa or AA.

Since the four adults are carriers, their genotypes would be Aa.

                    Aa     x     Aa

Progeny:    AA    2Aa    aa

Probability of being affected = 1/4

Probability of being a carrier = 1/2

Probability of not being affected = 3/4

(a) The chance that the child second child of Mary and Frank will have alkaptonuria = 1/2

(b) The chance that  the third child of Sara and James will be free of the condition = 3/4

(c)

(d) If someone has no family history of the disorder, their genotype would be AA.

                 AA     x     aa

                        4 Aa

<em>The chance that a child with alkaptonuria will have an offspring with alkaptonuria if the child's mate has no family history </em>= 0

(e)

(f) <em>The chance that a child with alkaptonuria will have an offspring with alkaptonuria if the child's mate has no family history</em> = 0

5 0
2 years ago
Other questions:
  • 3. Which of the following is a characteristic that could be applied to both living and nonliving things? (1 point)
    11·1 answer
  • A scientist discovers a new organism that is related to clownfish. What can the scientist discover by using molecular clocks?
    5·2 answers
  • What would occur if a fetus's chorion tissue ruptured? The maternal tissue of the placenta would be damaged, causing bleeding. T
    14·2 answers
  • How is an ecological footprint determined? a. An ecological footprint is determined by measuring the average amount of land and
    11·2 answers
  • Kelley used to do three sets of squats one time per week. after three weeks she noticed she was less sore than when she started
    10·1 answer
  • A camel can survive several weeks without drinking water by simply eating green plants. When a camel does drink, however, it can
    15·2 answers
  • A student reads the article "Autoimmune Diseases Stopped in Mice" and claims that this research will revolutionize
    8·2 answers
  • Griffith's experiments with S. pneumoniae were significant because they showed that traits could be transferred from one organis
    12·1 answer
  • Which of the following is the best carbohydrate source to consume for weight /fat loss
    15·2 answers
  • The form of DNA described as "disorganized strands of nucleotides" is
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!