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
Ivanshal [37]
3 years ago
5

Consider one such cell where the magnitude of the potential difference is 40 mV, and the inner surface of the membrane is at a h

igher potential than the outer surface. A sodium ion (Na ) is initially just outside the cell membrane (initially at rest). How much work (in J) is required for a cell to absorb the ion, so that it moves from the exterior of the cell to the interior
Biology
1 answer:
GarryVolchara [31]3 years ago
5 0

Answer: W = 6.4x10⁻²¹J

Explanation: <u>Work</u> is the energy transferred to or from an object due to the application of a force along a displacement.

The ion Na is gaining energy to move from a lower potential to a higher one.

For this to happen, the work done is calculated as

W=q.\Delta V

in which

W is work in Joules (J)

q is charge in Coulomb (C)

\Delta V is potential difference in Volts (V)

The ion Na has one positive charge. In coulombs, the charge is

q = 1.6x10⁻¹⁹C

The potential difference in Volts is

\Delta V = 40x10⁻³ or 4x10⁻²V

Calculating

W=q.\Delta V

W = 1.6x10⁻¹⁹. 4x10⁻²

W = 6.4 x 10⁻²¹ J

The work done to move an ion of sodium from the exterior to the interior is 6.4 x 10⁻²¹ J.

You might be interested in
20 Points thank you! For the real answer people
xenn [34]

Answer:

Wave 1 and Wave 2 have the same amplitude.

Explanation:

6 0
3 years ago
What determines similarities in anatomical features among organisms
otez555 [7]
The answer is 'Genes and Chromosomes'...


ive recently taken a quiz w/ this question on it!
3 0
3 years ago
Read 2 more answers
When a fish swims from salt water into fresh water, its cells react by:
Sever21 [200]

When a fish swims from salt water into fresh water its cells react by losing water and shrinking.​ The correct option is D.

<h3>What is fresh water?</h3>

Glaciers, lakes, reservoirs, ponds, rivers, streams, wetlands, and even groundwater contain fresh water.

These freshwater habitats cover less than 1% of the world's total surface area but are home to 10% of all known animals and up to 40% of all known fish species.

When a fish swims from salt water into fresh water its cells react by losing water and shrinking due to osmosis.​

Thus, the correct option is D.

For more details regarding fresh water, visit:

brainly.com/question/4381433

#SPJ1

6 0
2 years ago
Read 2 more answers
When a coelom is formed by introducing a gap surrounded by mesodermal cells at the base of the blastula, between the ectoderm an
mariarad [96]
Schizocoelic development

The coelom is a fluid-filled body cavity, where the internal organs are suspended in. It is the cavity between the wall of the body and the digestive tract.

In the schizocoelic development of the embryo, the coelom, called the schizocoel, develops as a split in the mesoderm. The outer layer of the mesoderm attaches with the ectoderm to form a body's musculature, while the inner layer attaches with the endoderm to form the wall of the digestive tract. 

This type of development is commonly found in annelids, arthropods, and mollusks. 

3 0
3 years ago
Plants and animals that lack color are commonly called albinos. In corn plants, green (G) is dominant to albino (g). A student
Fittoniya [83]

(B) 25% GG, 50% Gg, and 25% gg

<u>Explanation:</u>

Given:

Green is dominant and is coded by G

Albino is recessive and is coded by g

Two corn plants that are heterozygous for color are crossed.

The heterozygous condition of the plant would be Gg.

The cross is shown in the table attached.

According to the punnett square drawn,

The genotypic ratio is 1 : 2 : 1 (GG : Gg : gg)

                                 = 25% GG , 50% Gg , 25% gg

Phenotypic ratio = 3 : 1 ( green : albino)

                           = 75% green, 25% albino

7 0
3 years ago
Other questions:
  • Use the drop-down menus to indicate which endocrine structure is being described in each case. This structure secretes adrenalin
    7·2 answers
  • There are three phases in an action potential. they are __________.
    10·1 answer
  • The two homologs of a pair move toward opposite poles of a dividing cell during
    9·1 answer
  • If a sequence on one DNA strand reads A-T-C-C-T-G-C-A, what will the complementary strand sequence read?
    10·1 answer
  • Why might one sample of sulfur have a glassy luster while another has a dull, earthy luster? Explain
    7·1 answer
  • How are plants classified?
    14·2 answers
  • In simple dominance what is the result when a dominant allele pairs up with a recessive allele
    14·1 answer
  • What are the primary methods of confirming endotracheal tube placement within the trachea?.
    13·1 answer
  • Which of these describes the levels of organization of an animal? A. Tissues are composed of organs, which are composed of cells
    14·1 answer
  • Convert the following non-scientific questions to questions that can be answered by science.1. Should commercial use of our ocea
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!