Answer:
1. A. carbon,hydrogen,nitorgen and oxygen
2.C. Nucleotides
3.A.Brain
4.D. Polysaccharide
5. B.Amino acids contain nitrogen; fatty acids and sugars do not.
A scientist who studies living things is called a biologist
Answer:
Food, substance consisting essentially of protein, carbohydrate, fat, and other nutrients used in the body of an organism to sustain growth and vital processes and to furnish energy. The absorption and utilization of food by the body is fundamental to nutrition and is facilitated by digestion.
Answer:
Totipotential.
Explanation:
There are different cell potencies. A <u>totipotent</u> cell is a stem cell that can divide itself and <u>differentiate in any cell </u>that the organism needs. That is to say, endodermal cells, ectodermal cells, mesodermal cells, or extra-embryonic tissues. As cells differentiate themselves, they can gradually lose their potential. The cell's category that follows is pluripotent cells. These are stem cells that can only differentiate into ectoderm cells, endoderm cells, or mesoderm cells. Then we have multipotent cells, which differentiate into tissue cells. The next category is oligopotent cells. They give a limited number of specific cells, and lastly unipotent cells, only differentiate in one type of cell.
Answer: Acquired traits are skills that you have acquired and genetic traits are what you are born with.
Explanation: Example: A mother who can play piano really well might have a son. Just because she can play piano really well does not mean that her son will be able to.