Question 7 of 10
5 points
temperature and pressure combine to keep the outer core in a
state,
o
a. liquid
o
b. solid
o
c. gaseous
o
d. plasma
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Living cells cannot use heat to provide the activation energy for biochemical reactions because which choice(s) complete the sentence correctly? a) answer choice ii. eliminate b) answer choices ii and iv. c) answer choice iii and iv. d) all answers can complete the sentence.

The dense layer of connective tissue that surrounds an entire skeletal muscle is the

Question 17 (1 point) where does penicillin come from? a. it is a chemical that man invented b. it is a fungus c. it is a toxin made by other bacteria d. it was discovered in archaebacteria