Which organelles are involved in energy conversion?
a. mitochondria and chloroplasts
b. mitochondria and ribosomes
c. smooth and rough endoplasmic reticulum
d. golgi apparatus and chloroplasts

How many years would it take the atlantic ocean to grow 500 centimeters? show your work.

Which of the following best describes the expensive tissue hypothesis? brains require more energy, so the gut had to be reduced, and larger brains and tool use led to higher quality diets. increasing body size means that homo neanderthalensis had to include more fat in its diet. brains require more energy, so the gut had to be reduced as brains got bigger. brains require more fat, so the gastrointestinal viscera (gut) had to expand, and hands were needed to acquire more food.

Suppose you are provided with an actively dividing culture of e. coli bacteria to which radioactive thymine has been added. what would happen if a cell replicates once in the presence of this radioactive base?