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When a cell expends energy to move molecules or ions across a membane, the process is known as active transport.
Active transport is when it takes energy for the cell to take something else in.
Active transport can be split into two categories:
1. Transport by Proteins
- Membrane integral proteins can either act as channels, or as "flip-flop" pimps which move large or charged molecules across. Example: Na and K ions: Na/K pumps
2. Transport by Vesicles
- due to the fluid nature of the membrane, vesicles can fuse with the plasma membrane and transport substances across it
- Endocytosis: transport into cells. a. pinocytosis (drinking) b. phagocytosis (eating)
- Exocytosis: transport out of cells. Important in types of cells which secrete specialized products like hormones (example : insuline)
What else can I help you with?
What human activity pollutes the air?
Transport, power generation and industry.
What civilian activity is NOT listed as a disrupter of military operations?
regularly scheduled airline transport
Cellular components involved in metabolism that are influenced by temperature changes?
ribosomes, cell membrane and transport and enzyme activity
How does glucose concentration affect active transport?
Glucose concentration can affect active transport by influencing the rate of transport. In some cases, a higher glucose concentration can lead to an increased rate of active transport to maintain cellular homeostasis. Conversely, a lower glucose concentration may result in decreased active transport activity until a balance is restored.
Aerobic fitness is defined as the capacity to take in, transport and utilize what substance?
Aerobic fitness is defined as the capacity to take in, transport, and utilize oxygen.
What role do peripheral proteins play in the transport of molecules across the cell membrane, particularly in the context of transport proteins?
Peripheral proteins play a crucial role in assisting transport proteins in moving molecules across the cell membrane. They help in the recognition and binding of specific molecules, as well as in the regulation of transport protein activity. This collaboration ensures efficient and selective transport of substances in and out of the cell.
The body's maximum ability to transport and use oxygen is called maximal?
The bodyâ??s maximum ability to transport and use oxygen is called maximal oxygen consumption. A recording of the changes in electrical activity of the heart is electrocardiogram.
What are the benefits of using a cargo bike to transport kids?
Using a cargo bike to transport kids offers benefits such as promoting physical activity, reducing carbon emissions, and providing a fun and eco-friendly way to travel.
Saltwater fish remove extra salt from their body by active transport through the gills what is the result of this activity?
water balance is maintained in the blood
How smoking effect hemoglobin ratio?
It decreases the amount of Red blood cells that can transport O2 because smoking decrease the hemoglobin activity.
Why are ATPases associated with active transport proteins?
ATPases provide the energy required for active transport by hydrolyzing ATP. These proteins pump ions or molecules against their concentration gradient, maintaining cellular homeostasis. The ATPase activity is essential for driving the conformational changes that allow active transport proteins to transport substances across the cell membrane.
What has the author M Batty written?
M. Batty has written: 'The impact of fares-free public transport upon urban land use and activity patterns'
