Cells become cancerous when mutations occur in certain genes. The mutations can be due to genetics or environmental factors. These mutations occur in segments of the genetic code that control the
production of certain proteins. Which group of proteins is affected by these types of mutations?
A. proteins the regulate the cell cycle
B. Proteins that regulate the cell’s membrane structure
C. proteins the regulate the transport of material within the cell
D. Proteins that regulate the amount of antibodies certain cells produce

Use the drop-down menu to complete the statement. an electron in the first energy level of the electron cloud has an electron in the third energy level.a. a lower energy thanb. a higher energy thanc. the same energy as

Match the description of each organism to the appropriate category

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.