active transport is when cells must move materials in an opposite direction against concentration gradient. it requires energy. passive doesn't require energy. like a balloon , when u blow it up it requires energy and when u left the air go out it doesn't.
A Venn diagram comparing passive transport and active transport highlights their key differences and similarities. In the left circle, passive transport is characterized by the movement of molecules across cell membranes without energy input, relying on concentration gradients (e.g., diffusion, osmosis). The right circle focuses on active transport, which requires energy (typically ATP) to move substances against their concentration gradient (e.g., sodium-potassium pump). The overlapping section indicates both processes are essential for maintaining cellular homeostasis and involve membrane proteins.
The function you are referring to is likely the SUM function in spreadsheet software like Excel or Google Sheets. This function allows you to add the values in a range of cells either vertically (above the active cell) or horizontally (to the left of the active cell) by specifying the range within the function.
Alkali MetalsLithium, potassium and sodium are considered to be some of the most active metals.
this probably isn't the most professional answer but the gist of it is that whether or not something is an active or an inactive substance is determined by how well it reacts with other atoms and molecules, this (i believe) is a function of how many valance electrons it has, very few valance electrons (1 or 2)makes it easy to react with and a lot of valance electrons (7) makes it easy to form bonds with as well. that's my idea of it. although i would definitely fact check everything I've said just for safety. I do know that the most active metals are those at the bottom left corner of the periodic table.
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
she left
The sentence "The bees were left alone to work on their comb" is in the passive voice because the subject (the bees) is being acted upon (left alone to work) by an outside agent (unspecified).
Passive is formed with be verb + past participlepresent simple active = eat / asks. passive = is eaten / is askedpast simple active = ate /asked. passive = was eaten / was askedpresent continuous active = is eating / are asking. passive = is being eaten / are being askedpast continuous active = was asking / were eating. passive = was being asked / were being eatenpresent perfect active = has asked / have eaten. passive = has been asked / have been eaten.past perfect active = had asked / had eaten. passive = had been asked / had been eatenIn active sentences the subject or actor (the doer of the action of the verb) comes at the before the verb eg:The dog chased the cat.In this sentence the dog is the doer of the action 'chased'.Passive sentences allow us to put some thing else that is not the subject in the position of the subject eg:The cat was chased (by the mouse). The actor/agent 'by the mouse' - can be left out
Passive voiceThis is a passive sentence. We can't tell from this sentence who peeled and quartered the apples.Compare with this active sentence - (we know who does the action):Jason peeled and quartered the applesThe apples were peeled and quartered (by Jason)In passive sentences the agent can be left out or put at the end of the sentence using by.
A subject is needed for the active voice, which could be a noun or a pronoun. The passive voice is used when there is no subject or if the subject is to be left out. Some options for active voice would include: "They didn't build Rome in a day." "Nobody built Rome in a day." "The Romans didn't build a city in a day."
active transport is when cells must move materials in an opposite direction against concentration gradient. it requires energy. passive doesn't require energy. like a balloon , when u blow it up it requires energy and when u left the air go out it doesn't.
The teacher had 26 sweets!
In active sentences the subject or actor (the doer of the action of the verb) comes at the before the verb eg: The dog chased the cat. In this sentence the dog is the doer of the action 'chased'. Passive sentences allow us to put some thing else that is not the subject in the position of the subject eg: The cat was chased (by the mouse). The actor/agent 'by the mouse' - can be left out
The Incan society was destroyed through both passive and active Spanish action. A mix of disease and war ultimately left their culture, ideas, and people dead.
Samsung, like the majority of manufacturers only makes active 3D tvs. LG and Toshiba make passive 3D TVs. Although there is debate over the better technology, manufacturers are supporting active 3D more than passive. It has had some teething trouble in its early days but recent developments have made it far more robust and the once heavy glasses are now as light as many of the passive glasses.
Because they aren't better than active 3D television. Both have their advantages. Passive televisions use polarizing glasses to separate the left and right eyes' images. The effect is that the perceived resolution is cut in half to 540 lines, less than the 576 lines of older standard definition images.