The cell membrane functions as a selective barrier. We call these kind of membranes as differentially permeable or semi permeable membrane. It can decide what substances can pass in and out. Therefore it can surround the cytoplasm (which is the inside of a cell) to separate the cell's content from the surroundings.
B..............................
Answer:
Acorns need the right soil conditions to germinate and sprout. Most germination of trees will begin during the early spring season. Given these conditions, the acorn will start to germinate and grow a taproot that pushes deep into the surrounding soil.
Answer: 2 atoms of hydrogen combined by covalent bods to the same atom oxygen. ( H2O )
Explanation: What is water molecules made of? 2 atoms of hydrogen combined by covalent bods to the same atom oxygen. ( H2O )
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Answer:
1. Water transports other nutrients to cells, carries waste away, and aids digestion.
2. Iron and Calcium are the two main minerals that each individual needs.
3. Fish, meat, chicken, eggs, milk, and soy beans are great sources of protein.
4. Vitamins are essential for growth and health.
5. Carbohydrate are described as "brain food".
6. The three groups of fatty acids are saturated, monounsaturated, and polyunsaturated.
7. Water is key to all bodily functions.
8. Amino acids are considered to be the building blocks of our body tissue.
9. Simple carbohydrate foods provide calories, but not much else.
10. Complex carbohydrate foods provide calories and other nutrients.
