Answer:
Answer is true.
Explanation:
A cell membrane is considered as selectively permeable because it controls or regulates the type of molecules that can pass through it. Substances of small molecules are allowed by the cell membrane while substances with large molecules are not allowed to pass through. For example , amino acids and simple sugar can easily pass through the cell membrane while protein and starch can't pass through it.
The cell membrane is considered or described to be boundary or border between the interior part and exterior part of the cell.
Answer:
Ocean current direction is influenced by the rotation of the earth.
Explanation:
Ocean current refers to the movement of water in the ocean. For this movement of water, several factors are responsible. The main factor which is responsible is the rotation and gravity of earth. Other factors which affect the direction of ocean currents are temperature, rainfall, atmospheric pressure, salinity of water and winds.
A human needs approximately 2-5 percent of protein for the typical energy needed daily. Protein is one of the most important building blocks in the body. It helps the bones, muscles, skin, blood, and cartilage. A humans nails and hair are made of protein. The protein your body uses also repairs tissues and build new ones.
