All categories

2 years ago

Based on the model explain whether the molecules shown crossing the membrane require energy to do so

Biology

1 answer:

Svetach [21]2 years ago

4 0

Answer:

As the diagram is not given, hence let's generally describe the movement of molecules along the cell membrane.

Molecules can either pass through the cell without using energy through the process of passive transport. An example includes molecules of oxygen.

Molecules which are large and un-polar cannot move through the cell membrane easily. These molecules will require energy to move through the cell membrane. These molecules might move in with the help of the carrier or facilitated proteins. Examples include molecules of glucose.

You might be interested in

Two species of frogs belonging to the same genus occasionally mate, but the offspring fail to develop and hatch. What is the mec

cricket20 [7]

Answer:

The options

A. the postzygotic barrier called hybrid inviability

B. the postzygotic barrier called hybrid breakdown

C. the prezygotic barrier called hybrid sterility

D. gametic isolation

The CORRECT ANSWER IS A.

A. the postzygotic barrier called hybrid inviability

Explanation:

Postzygotic barrier is a mechanism that hinders reproduction after fertilization and zygote development. Hybrid inviability occurs when a mating between two organism produces a hybrid that can't strive past the embryonic stages.

In Reduced Hybrid Viability there is a lower tendency to survive for individuals whose parents possesses incompatible genetics, which may have result from sexual union of these parents from varying species.

These two frog species in this case study can be separated through the mechanism of the postzygotic barrier called hybrid inviability.

8 0

2 years ago

Strawberry DNA Extraction lab What was the purpose of the Sodium Chloride? Include a discussion of polarity and charged particle

lys-0071 [83]

Answer:

Sodium chloride removes proteins from DNA and helps in DNA precipitation.

Explanation:

The Deoxyribonucleic acid (DNA) is negatively charged due to the highly polar phosphate groups that make up the phosphate backbone. The molecules of water are also highly polar and they have positive charge, thereby water molecules interact with the negative charges of the DNA. The sodium chloride generates temporary attraction forces between sodium (positive) ions and the DNA backbone (negative), thereby DNA can be disassociated from the aqueous layer. Moreover, sodium chloride helps to remove proteins (histones) that bound to DNA and also helps to maintain proteins in the aqueous layer.

5 0

2 years ago

What is the largest geographic area that contains all the<br> ecosystems on Earth called?

vaieri [72.5K]

Answer:

biosphere is the answer

7 0

2 years ago

Read 3 more answers

An experiment was conducted to investigate how temperature affects cellular respiration. The results are shown above. At what te

Anna007 [38]

Answer:

Explanation:

The production of ATP is greatest at 50o C as indicates by the production of CO2 in the Krebs Cycle

7 0

2 years ago

Read 2 more answers

If carbon dioxide is completely removed from a plant's environment, what would you expect to happen to the plant's production of

Neporo4naja [7]

Answer: Plants use Carbon Dioxide to produce sugars and energy, so you could expect the high-energy sugars to be depleted as the sugars are used to produce energy, and the sugars cannot be replaced as fast as they are being used.

4 0

2 years ago