The diagram shows the life cycle of a fern. Which labels belong in the areas marked 1 and 3?

1 - Zygote
3 - Spores
1 - Spores
3 - Zygote
1 - Sporophyte
3 - Gametophyte
1 - Gametophyte
3 - Sporophyte

What are some natural processes that represent physical and chemical changes?

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone

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.