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
blsea [12.9K]
3 years ago
12

Paramecia are unicellular protists that have contractile vacuoles to remove excess intracellular water. In an experimental inves

tigation, paramecia were places were placed in salt solutions of increasing osmolarity. The rate at which the contractile vacuole contracted in pump out excess water was determined and plotted against osmolarity of the solution, as shown is the graph. (Graph has negative slope; y-axis - rate of concentration, x-axis - osmolarity of solution.) Which of the following is the correct explanation for the data?
a. At higher osmolarity, lower rates of contraction are required because more salt diffuses into paramecia
b. The contraction rate increases as the osmolarity decreases becase of the reduced amount of ATP produced by cellular respiration
c. The contractile vacuole is less efficient in solutions of high osmolarity because of the reduced amount of ATP produced from cellular respiration
d. In an isosmotic salt solution, thre is no diffusion of water into or out of the paramecia, so the contraction rate is zero
Mathematics
1 answer:
Oksanka [162]3 years ago
3 0

Answer:

B)

Step-by-step explanation:

The contraction rate increases as the osmolarity decreases because of the reduced amount of ATP produced by cellular respiration

You might be interested in
HELP <br> The solutions to the equation<br><br> 2cosθ−sinθ=0<br><br> for 0∘≤θ≤360∘ are
konstantin123 [22]

Answer:

θ ∈ { 90 ∘ , 210 ∘ , 270 ∘ , 330 ∘ }

step by step explanation:

Factoring the left side of

2 sin ( θ ) cos ( θ ) + cos ( θ ) = 0

gives

cos ( θ ) ⋅ [ 2 sin ( θ ) + 1 ] = 0

Which implies (for  θ ∈ [ 0 , 360 ∘])

either     cos ( θ ) = 0

           →  θ = 90 ∘ or 270 ∘

OR

2 sin ( θ ) + 1 = 0

→  sin  ( θ )=− 1 2 → θ = 210 ∘ or 330 ∘

→  θ = 210∘ or 330∘

8 0
2 years ago
A recipe calls for 2 1/4 teaspoons of salt for every 1 1/8 teaspoons of black pepper used. How many teaspoons of pepper used
miss Akunina [59]

Answer:

it depends on how many tspns of salt

Step-by-step explanation:

4 0
3 years ago
Put the following equation of a line into slope-intercept form, simplifying all fractions. 3x + 2y = 14​
igomit [66]

Answer:

<u>Hope this helps :-) Answer in black and green (the typed one came out a little small)</u>

Step-by-step explanation:

5 0
3 years ago
groceries are us has turkey for $1.19 per pound. the turkey weighs 15 pounds how much does the turkey cost
RideAnS [48]
Each pound costs $1.19 .
So  15 pounds cost

         (15) x ($1.19)  =  $17.85 .
6 0
3 years ago
How does a digit in the ten thousands place compare to a digit in the thousands place
Brilliant_brown [7]
It is 10x the value of the one in the thousands place
8 0
3 years ago
Other questions:
  • 11. Ms. Merrill spends
    7·2 answers
  • The length of the long leg of a right triangle is 16 inches more than four times of the shorter leg. The length of the hypotenus
    5·1 answer
  • Joy is planning to purchase a sweater that costs $30 dollars at her local department store. The sweaters are on sale for 20% off
    9·1 answer
  • Apex Help!!!! At the beginning of year 1, Gracie invest $350 at annual simple interest rate of 4%. She makes no deposits to or w
    10·2 answers
  • A=1/2*3.14*w^2+2lw<br><br> Solve for l
    7·1 answer
  • Will give brainliest answer if correct
    14·1 answer
  • What number should be placed in the box to help complete the division calculation?
    12·1 answer
  • Which decimal is less than 0.8 and greater than 0.02
    6·1 answer
  • KHAN ACADEMY!
    12·2 answers
  • This is for middle school 8th grade new question need help last one :)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!