First pic :
plants do not have cell membranes
(plants have BOTH cell membranes and cell walls)
second pic:
ATGC
(opposite strand of the DNA TACG)
third pic:
the second choice
(selectively permeable means only specific molecules could get in and go out)
fourth pic:
option 2
(cellular respiration takes sugar (or food) and makes it into ATP energy. this is what makes us have energy after we eat)
I really hope this helped :))
I am not 100% sure but I thinking it responds when pathogens enter the body because the immune system is meant to protect your body from illness.
I <em>believe</em> we can tell that the universe is expanding due to <u>redshift light. Option D.</u>
the complement system is a group of proteins in the blood that attack pathogens that enter the body and kill them.
