Elements are placed into the same period on the periodic table of the elements because they
question 1 options:

form the same type of chemical bonds.

form the same type of isotopes.

have the same chemical properties.

have the same number of electron energy levels.

You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.

When a population split into two subgroups what is most likely to cause the subgroups to develop different traits?

Which of the following is one way in which organisms such as clown fish and sea turtles are able to overcome the many dangers that their offspring encounter and ensure that their species population numbers stay relatively steady