active satellites are receives the transmitted signal from earth ,amplify the signal and transmit it. it is also called as transponders. but passive satellites just receive and transmit the signal.itac as the reflector
The process by which substances enter and exit the cell is called cellular transport. It primarily occurs through two main mechanisms: passive transport, which does not require energy, and active transport, which requires energy expenditure by the cell. Examples of passive transport include diffusion and osmosis, while examples of active transport include endocytosis and exocytosis.
The movement of materials across the cell membrane without using cellular energy is called passive transport. The movement of materials against a concentration difference is known as active transport. Active transport requires energy.
When particles leave the cell is is either through a passive process such as diffusion or an active process called exocytosis.
passive transportPassive transport is the term. Active transport is moving of materials WITH energy.Passive transportpassive transportdiffusionDiffusion, but if it's water then it's called osmosis. They're the same basic thing though.diffusion
active and passive
"to be called" is passive, but "what do you prefer" is active. To make "to be called" active, you could say "what do you prefer that others call you?" To make "what do you prefer" passive, you would say "what is preferred by you..."
it depends on existing amplifier or not , if after antenna there's an amplifier it called active else it called passive which less sensitive that active .
It has to have resistors but an active filter will alsol have an active device, usually an op-amp, while a passive filter has only passive components and needs no power supply.
They are both passive devices. An active device is a device that uses semiconductors (or tubes) to process signals instead of using the natural processes of capacitance, inductance or resistance.
The object from the active sentence goes to the subject position in the passive (only it is not called the subject in the passive sentence) egYouThe verb form for passive is be + past participle. In this example ( present continuous) it is not as straight forward as present simple or past simple but the verb phrase becomesare being watched.You are being watchedThe subject of the active sentence is called the agent in a passive sentence and can be left out of the passive sentence if you want. If you want to add the agent then you use by + agent:You are being watched by the teacher
The movement of materials across the cell membrane without using cellular energy is called passive transport. The movement of materials against a concentration difference is known as active transport. Active transport requires energy.
What do you mean, what do I mean? Did I use the expression "active and passive voice"? I don't think so. No, you want to phrase your question "What is meant by the active and passive voice?", because that way you don't have to say who is using those words. You see, normally if you say something like "B. King is discussing active and passive voices" you have to say that it is B. King that is doing it, but if you don't know or don't want to say, you can turn it around backwards so it says, "Active and passive voices are being discussed." There. You don't know from that who is discussing it, do you? Perhaps you would like to know what this turning around backwards is called? It's called the passive voice. Yes, I asked you to rephrase your question so it was in the passive voice ("What is meant by the active and passive voice?") rather than the active voice ("What do you mean by active and passive voice?").
in the UK a crime against the crown is called treason
For changing from passive to active voice sometimes the object is understood. In that case the object has to be mentally supplied and then formed into the subject. Thus :- 'It is said he will come' while converting from passive to active will read like this 'Men say he will come'.In passive sentences the doer of the verb is not usually given. Or if it is given then it is - by + noun, this is called the agent egThe mouse was chased by the cat.The agent becomes the subject of an active sentence eg:The catchased the mouse.If the agent is not given in the passive sentence you to find out who or what does the action to make passive into active. egThe Mona Lisa was painted in the 16th century. -- passive_________ painted the Mona Lisa in the 16th century. -- active.
a verb that causes the subject to perform the action.
in star topology , the central hub is called...... (i) active hub (ii) passive hub (iii) inactive hub (iv) live hub