If plants are grown in the light with CO 2 containing a radioactive isotope of oxygen (180) subsequent analysis will show that 180 incorporated in organic molecules first appears in A) the thylakoid space .
B) the thylakoid membranes. C) the stroma.
D) mitochondria.

(drag each tile to the correct identify which questions can be answered by what can be answered by science or which cannot. -is it right or wrong to use genetic engineering to produce new food products? -what are the most common social settings that tend to produce accomplished artists? -if a new gene is added to the genome of a tomato species, will that species be more resistant to insects? -should humans use biotechnology to bring extinct organisms from the fossil record back to life? -do the types of organisms found in the fossil record appear in consistent sequences in different parts of the world? -are michelangelo's paintings more impressive than rembrandt's?

Why is excretion necessary to maintain homeostasis?

How many species of living things are alive on earth today? more than 1,000,000 none of these answers are correct 100-500 1,000 –500,000 o 500,000 -1,000,000