All categories

3 years ago

What does it mean to be selectively or semi-permeable

Biology

2 answers:

slamgirl [31]3 years ago

4 0

Answer:

Explanation:

Easily. Let by

vova2212 [387]3 years ago

3 0

Answer:

Selectively permeable or semipermeable means specific substances are allowed to pass through the plasma membrane.

Explanation:

The plasma membrane is selectively or semipermeable in nature because the plasma membrane allow only specific molecules such as nonpolar substances or hydrophobic substances such as steroidshormone to pass through it and prevent the passage of polar solute molecules such as water,glucose.

To transport these polar solutes across the membrane an additional protein is needed in case of transport of water channel protein is needed whereas in case of glucose transport carrier protein is required.

You might be interested in

Salt water gargle can temporarily relieve a sore throat. One recipe calls for 3/4 teaspoon of salt in 1 cup of water. A second r

LiRa [457]

Answer:

I believe the one with 2 cups of water will be saltier

Explanation:

When you change the fractions to a common denominator, which is 12, you see the recipe with 1 cup should be half of the recipe with 2 cups. But the one with 2 cups is more than double the recipe with 1 cup.

7 0

2 years ago

A fish fossil is found in a rock. A foot bone and tooth are found in an older layer of the same rock. What can scientists learn

sesenic [268]

A. land to water is the answer.

4 0

3 years ago

What primarily happens during the light-dependent reactions of photosynthesis? What 2 reactions does solar energy drive during t

andrey2020 [161]

Answer:

During light reaction of Photosynthesis ATP and NADPH are formed.

Explanation:

Reactions driven by solar energy

H2O=H+ + OH-

4OH- - 4e- =4OH

4OH=2H2O+O2

Second reaction

NADH+e- +H+=NADPH

Carbon dioxide fixation occurs during Calvin cycle.Carbon dioxide is being fixed into glucose molecule.

The name of the enzyme is Ribulosebisphosphate Carboxylase(RUBISCO)

The normal substrate for this enzyme is Ribulose bisphosphate(RUBP)

4 0

3 years ago

HELP WILL MARK BRAINLIST !!!

Andreyy89

Answer: 9. is D

10. is A

Explanation:

8 0

2 years ago

Read 2 more answers

When comparing the yield of ATP from the different stages of cellular respiration, which produces the greatest number of ATP

REY [17]

Answer:

The correct answer is - electron transport system.

Explanation:

There are 3 main stages of cellular respiration (aerobic) that are Glycolysis, the Kreb's Cycle and the ETS or Electron Transport Chain. The formation of energy in ATPare as follows:

Glycolysis - glucose > 2 Pyretic Acid Molecules =>2 ATP and Hydrogen

The Krebs Cycle - Citric Acid (a derivative of Pyruvic Acid) > 2 ATP in 4 cycles and Hydrogen, carbon dioxide and water.

The Electron Transport Chain > electron carrying Hydrogens > releases the energy as 4 ATP and water

Thus, the correct answer is - The Electron Transport Chain is the stage that produces most of the ATP during cellular respiration.

4 0

2 years ago