sandpaper
An everyday object that is similar to endoplasmic reticulum would be a road. Trucks travel on the road like the proteins travel through the endoplasmic reticulum. Assembly line, digestive track or airplane route could be used too.
brain
You can think of the endoplasmic reticulum in a cell as a system of hallways and rooms for transporting and modifying molecules. Similarly, in a house, you can use hallways and rooms to move and process items. Just as the endoplasmic reticulum is crucial for protein production in cells, rooms in a house can be designated for specific tasks, like a kitchen for cooking or a study for working. Both the endoplasmic reticulum and a house's layout serve as organized systems for efficient functions.
shipping house
A solar panel converts light to energy, which is similar to a chloroplast converting light to carbohydrates for energy.
A solar panel converts light to energy, which is similar to a chloroplast converting light to carbohydrates for energy.
Some parts of the ER have ribosomes attached to the cutoplasmic side of the membranes. This is called the RER (Rough Endoplasmic Reticulum). These ribosomes synthesise proteins which are to be secreted from the cell, to form lysosomes or to become part of the cell surface membrane. Other parts of the ER have no ribosomes attached: SER. The cisternae (enclosed spaces in the membranes) of SER tend to be more tubular, in contrast to the flattened sacs of RER. SER has many different functions, including the synthesis of cholesterol and of steroid hormones such as testosterone and the breaking down of toxins such as drugs.
The everyday object that can be compared to cytoplasm would be the floor of a house. This is because the floor holds the houses furniture.
An orange is an everyday object that has a shape similar to Earth, with a round and spherical shape.
An everyday object that can be compared to the nucleus in a cell is the brain in a human body. Just like the nucleus controls the activities of the cell, the brain controls the functions of the body by sending and receiving signals. Both the nucleus and the brain play a central role in the overall functioning and health of their respective systems.
You compare its mass with something of known mass. In everyday earthbound conditions, this would mean weighing it on a set of weighing scales or on a spring balance.
It means: * Calculate the density of an object * Calculate the density of its pieces * Compare