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
Vladimir79 [104]
3 years ago
6

Which of these statements describes what occurs in facilitated diffusion?-Facilitated diffusion requires energy from the cell to

drive a concentration gradient.-Facilitated diffusion of solutes occurs through protein pores in the membrane.-Facilitated diffusion of solutes occurs through phospholipid pores in the membrane.-Facilitated diffusion is another name for osmosis.
Physics
1 answer:
Softa [21]3 years ago
6 0

Answer:

Facilitated diffusion of solutes occurs through protein pores in the membrane.

Explanation:

Facilitated diffusion: It is known as a type a passive transport which diffuses the solutes through specific trans membrane integral proteins in the plasma membrane. Transport proteins helps in diffuse some ions, and molecules across the plasma membrane.

There are three types of transport proteins which are involved in this diffusion:

1) gated channel proteins.

2) carrier proteins.

3) channel proteins.

Some example of facilitated diffusion are: glucose transporter, ion channels, and aquaporins.

You might be interested in
A beam of light with a wavelength 760 nm in air travels in water. The index of refraction of water is 1.33. What is the waveleng
BabaBlast [244]

Answer:

<em>The wavelength of water = 571.43 nm</em>

Explanation:

Refractive index of water = wave length of light in air/wave length of light in water

R.d = λ₁/λ₂.................. Equation 1

making λ₂ the subject of equation 1

λ₂ = λ₁/R.d...................... Equation 2

R.d = refractive index of water , λ₁ = wave length of light in air, λ₂ = wave length of light in water

<em>Given: R.d = 1.33, λ₁ = 760nm</em>

<em>Substituting these values into equation 2</em>

λ₂  = 760/1.33

<em>λ₂  = 571.43 nm</em>

<em>Therefore the wavelength of water = 571.43 nm</em>

6 0
3 years ago
An object starts at Xi = -4m with an initial velocity of 4m/s. It experiences an acceleration of -2 m/s^2 for 2 seconds, followe
GalinKa [24]

Answer:

a) 0 m/s

b) - 24 m/s

c)  - 68 m

Explanation:

Given:

Initial distance = - 4 m

Initial velocity, u = 4 m/s

1) acceleration, a = - 2 m/s² for time, t = 2 seconds

thus,

velocity after 2 seconds will be

from Newton's equation of motion

v = u + at

v = 4 + (-2) × 2

v = 0 m/s

2) Velocity after 2 second is the initial velocity for this case

given acceleration = - 6 m/s² for 4 seconds

thus,

final velocity, v = 0 + ( - 6 ) × 4 = - 24 m/s

here the negative sign depicts the velocity in opposite direction to the initial direction of motion

thus, velocity after 6 seconds = - 24 m/s

3) Now,

Total displacement in 6 seconds

= Displacement in 2 seconds + Displacement in 4 seconds

From Newton's equation of motion

s=ut+\frac{1}{2}at^2

where,  

s is the distance

u is the initial speed  

a is the acceleration

t is the time

thus,

= 0\times2+\frac{1}{2}\times(-2)\times2^2  + 0\times4+\frac{1}{2}\times-6\times4^2

= - 16 - 48

= - 64 m

Hence, the final displacement = - 64 - 4 = - 68 m

5 0
3 years ago
An instrument for observing very small objects is
VladimirAG [237]
Microscope
A microscope shines a light through a slide with the sample of the object on and you look through a lens that allows you to magnify it by a very significant amount depending on what kind of microscope you have (a powerful electron microscope can magnify to the atomic level).

6 0
3 years ago
N the diagram, the arrow shows the movement of electric charges through a wire connected to a battery.
dolphi86 [110]

Answer:

D. A difference in resistance

5 0
3 years ago
The light bulb in your room is not very bright. You want to use a concave mirror to direct its illumination into a tight, parall
ehidna [41]

A point source is to be used with a concave mirror to produce a beam of parallel light. The source should be placed midway between the center of curvature and the mirror. To solve this question you have to draw a ray diagram. Apply the mirror equation to determine the image distance and finally make sure that the first two steps are consistent with each other.


<span>I hope this helps, Regards.</span>

5 0
3 years ago
Other questions:
  • What was your hypothesis? According to your data, do you think your hypothesis was correct? What is latent heat? How does it sho
    9·2 answers
  • An elevator is initially moving upward at a speed of 12.00 m/s. the elevator experiences a constant downward acceleration of mag
    5·1 answer
  • Which of these elements has four total electrons in its outer p orbital
    13·1 answer
  • 1 liter= 10 cubic centimeters?
    12·1 answer
  • A gas expands from an initial volume of 0.040 m^3 and an initial pressure of 210 kPa to a final volume of 0.065 m^3 while its te
    12·1 answer
  • A tortoise and the hare are racing if the tortoise is traveling a speed of 112 cm/s and the hare is running 2 m/s which one is m
    12·1 answer
  • A tissue cross-section viewed on a microscope slide shows a cell of almost rectangular shape with dimensions 6.9 × 10-4 cm by 1.
    5·1 answer
  • A two-lane highway is 8 meters wide and the asphalt is typically 4cm thick. What would the volume of the asphalt be for a road t
    7·1 answer
  • A string of length 4m is extended by 0.02m, when a load of 0.4kg is suspended at its end. What will be the length of the string,
    6·1 answer
  • QUICK HELP ILL MARK U BRAINLIEST
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!