THIS IS THE LAST TIME I POST THIS QUESTION SO PLEASE JUST ANSWER IT AND IF YOU HAVE A QUESTION THEN PUT IT ON THE COMMENTS NOT THE ANSWER

1. Name 3 items in nature that contain high concentrations of proteins.

Animal products like milk, eggs, and meat have really concentrated protein. (nuts and plants you can eat also are really concentrated)

2. What is similar about the primary structure of each protein?

The primary structures have a balanced level of amino acids.

3. For the proteins you researched, how does the structure help the protein perform its function?

The primary structure is reflected on its folded structure and that folded structure determines the proteins function.

Explanation:

its kinda hard to answer the questions without you telling us which 2 proteins you wanted to research but i think the easiest options would be eggs and meat.

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s