Which part of John Dalton's theory is no longer accepted today? A. Atoms cannot be destroyed or divided into smaller particles.
B. Atoms are rearranged during chemical reactions.
C. Atoms combine in different ways to form chemical compounds.
D. Atoms are made of positively and negatively charged particles.

Choose an equation that represents an enzyme-catalyzed reaction. (a) enzyme + substrate → enzyme-substrate complex (b) enzyme + substrate ←−→ enzyme + products (c) enzyme + substrate ←−→ enzyme-substrate complex → enzyme + products (d) enzyme + substrate ←−→ enzyme-substrate complex → enzyme-substrate complex + products

What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.

50 points! need answer asap. what type of organic compound contains the following functional group? (2 points)