It consists of the alveolar wall, the capillary wall, and their basement membranes.
Number 1 is C
And im not sure about the rest :(
Answer: b. reaction 3
Explanation: When an enzyme is present in a reaction acts as a catalyst, increasing velocity of reaction and decreasing the activation energy, when not present an enzyme the reaction velocity is very low and implies high activation energy, being unfavorable to the system
Answer:
a. Proteins
Explanation:
Chromosomes are made up of DNA tightly coiled many times around proteins