You would be downgrading if you buy an iPad to replace your macbook. I have a macbook and the iPad is nothing close to it. iPad is just nice for browsing, email, chat, and a bunch of apps. It can't do nearly as much as a macbook can. If your macbook is old, then sure, throw it out and get an iPad, but keep in mind that iPads don't have much hard-disk space. They range from 8 to 64 gig. Macs come with at least 160 and can go up to 500 gig.
macbook.
Probably not.
The iPad is made by Apple. Also, the Mac, MacBook, MacBook pro, MacBook air,iPod shuffle, iPod nano, and the iPod touch is made by Apple.
No, it is not possible to upgrade the memory, resolution, video or network features on any iPad.
Yes. While the least expensive MacBook is in the $1200 range, the least expensive iPad with Retina is $500 and the iPad mini starts at $430
Macbook, iPhone, iPad, iPod
No iPad uses iOS, and mac uses OSX
This honestly depends on what you're going to use it for. It also has to do with opinion. If I had to choose between the two, I would choose the iPad.
You can't add additional RAM to a Macbook Air because the RAM module is soldered onto the motherboard. Apple has been migrating this way with a myriad of devices including the iPod, iPhone and iPad product lines.
You cannot. With the introduction of the MacBook Pro Retina line in 2012, it's not possible to upgrade your RAM as you could with previous MacBooks.
No. Neither the iPad or iPad 2 have expandable memory. They both have SSD drives, with no option to upgrade.
If you have a Macbook with OSX 10.8 Lion and a iPad with IOS 5, you simply need to enable iCloud on both devices. When they connect to a wifi network and the internet, they will upload and sync pictures with each other. See the link below on how to do it on your Macbook.