Can someone me with this question?

For #1 im not sure but the amino acids are held together with peptide bonds. For #2 The primary structure of a protein is when the amino acids are in a chain bonded with peptide bonds. This is just a string of amino acids which will then form into a sheet and combine to form a full protein

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.

answer: although many types of viruses can cause a common cold, rhinoviruses are the most common culprit. a cold virus enters your body through your mouth, eyes or nose. the virus can spread through droplets in the air when someone who is sick coughs, sneezes or talks. theres your answer

explanation: