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NNADVOKAT [17]
3 years ago
15

Which process is characterized by the movement of particles from an area of high concentration to an area of low concentration a

cross the plasma membrane without the use of energy?
1) hypertonic transport
2) active transport
3) passive transport
4) dynamic equilibrium
Biology
1 answer:
Aleks [24]3 years ago
5 0

Answer:

3) passive transport

Explanation:

Passive transport is a type of cellular transport that does not require the use of energy to move substances (i.e., ions and molecules) across biological membranes. Passive transport uses concentration gradients to move substances across cell membranes, thereby transporting them from regions of high concentration to regions of low concentration. Passive transport can be divided into 1-osmosis (i.e., movement of solvents), 2-diffusion (i.e., movement of solutes), and 3-facilitated diffusion (i.e., movement of molecules with help of protein channels or carriers), and 4-filtration (i.e., movement of water by using a pressure gradient).

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Advocard [28]

Answer:

the average percentage of energy lost as heat

Explanation:

An energy pyramid (also called trophic pyramid) is a graphical representation that exhibits how energy flows at each trophic level in a particular ecosystem. In an energy pyramid, it is possible to determine how much energy is available at each trophic level and how energy flows from producers (e.g., photosynthetic plants) to primary consumers (e.g., herbivores), then from primary consumers to the next trophic level (e.g., carnivores), and so successively to all major trophic groups (e.g., higher carnivores). During this chain, energy is lost as heat when it is transferred to the next level, and the average percentage of energy lost increases at each trophic level, thereby less and less energy is available to major trophic groups.

7 0
3 years ago
ATP and NADH are important energy carriers in the cell.
gulaghasi [49]

Answer:

1. Diffusible through the cytoplasm: BOTH

ATP is a molecule found in the cytoplasm. During the glycolysis process, two molecules of NADH are formed in the cytoplasm and are subsequently transported to the mitochondrial matrix.

2. Can donate hydrogen atoms: NADH

Cytoplasmic nadh transfers hydrogen to oxaloacetate forming malate.

3. Energy stored in bonds between two terminal phosphates: ATP

The bonds between phosphate groups like those of atp are called phosphoanhydride bonds and are used as "high energy" bonds.

4. Contains adenosine ATP

the atp is known as adenosine triphosphate

5. Activates sugars for glycolysis

ATP, by phosphorylating glucose, activates glucose with two phosphate groups (to increase its energy) so that it can be used in other processes when necessary.

6. Two (net) molecules are generated via glycolysis ATP

7. Supplies the electron transport chain nadh

In the electron transport chain each molecule of NADH is converted to 3 of ATP.

8. Hydrolysis can be coupled to biosynthetic reactions

ATP can be hydrolyzed to ADP and Pi by adding water, releasing energy.

9. Can transfer phosphate groups  

ATP provides energy by phosphate group transfer

10. Contains nicotinamide ring NADH

5 0
3 years ago
Read 2 more answers
Water’s properties of surface tension, cohesion, and adhesion are central to the ability of transpiration to pull water up from
Daniel [21]

Answer:

6.) larger diameter of stomatal pores

A) Increased transpiration pull

1.) thicker film of water on surface of mesophyll cells

2.) higher relative humidity in air around leaf

B) decreases transpiration pull

3.) less curvature of water surface on mesophyll cell walls

4.) lower rate of water evaporation from surface of mesophyll cells.

5.) larger air space in leaf interior

C) has no effect on transpirational pull.

Explanation:

  • Transpiration primarily occurs through stomatal openings in the leaves. Increasing the diameter or size of these opening would ultimately increase the amount of water escaping from them and therefore, increase the transpiration rate.
  • Higher humidity in the air entails the presence of greater number of water vapours in the atmosphere. Since osmotic pressure plays a major role in transpiration, therefore, this decreases the rate of transpiration.

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3 years ago
What can increase the amount of carbon and the atmosphere
Zielflug [23.3K]

Global warming increases the amount of carbon in the atmosphere.

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