Euglena contain chloroplasts. when light is limited, they can eat particles to obtain energy. are these organisms classified as heterotrophs or autotrophs?

Which codon is the code for the amino acid histidine (his)?

Food contains a sugar called ( ), which is broken down in a process called cellular ( ). this process uses ( ) to break down food molecules and provide energy for cells. fill in the parentheses

What was the purpose of mendel's experiments with dihybrid crosses? a. to determine if dna was a transforming factor b. to determine if traits could be recessive c. to determine if traits affected each other d. to determine if traits had more than one allele