Answer:
Both plant and animal cells absorb nutrients and convert those nutrients into usable energy. Animal cells absorb nutrients from food, while plant cells absorb energy from sunlight via a process called photosynthesis.
D:
a,b,c are inherently bad or simply not helpful
Motor proteins provide for molecular transport of materials in cells by interacting with CYTOSKELETAL STRUCTURES.
Cytoskeletal structures refers to those structures in the cells that provide basis for movement from one part of the cell to another.
Motor protein work together with cytoskeletal structures to carry different type of materials from one point of the cell to another point.
For question 3, it would not leak through the whole sandwich because the cell membrane is thick
Mercury has the smallest orbit and neptune has the largest. so neptune would take a longer amount of time to orbit the sun.
