Which cell structure separates the nucleus from the cytoplasm?
a. lysosomes
b. mitochondria
c. the nuclear envelope
d. ribosomes

Hedgerows have created a new ecosystem within britain’s a. farms b. cities c. forests d. industrial areas

When a human or animal consumes food, the carbon in that food is most likely to be converted into which of the following elements? a. carbon remains carbon b. nitrogen c. oxygen d. hydrogen

Gregor mendel is best known for his work with pea plants and for uncover many of the mysteries of genetics. one of his major findings stated that there were specific, physical units of inheritance that are transmitted during reproduction. what is the the name given to these units of inheritance which can be found on chromosomes? a) centromeres b) cytoplasm c) genes d) nucleotides