What are chromosomes?

a. strands of dna wrapped around proteins
b. any organism that contains dna
c. the alleles that cause certain traits
d. a form of virus that infects cells

Imagine a rocket launching from earth and travelling to the moon. in which order would the rocket pass through the layers of the atmosphere? thermosphere, mesosphere, stratosphere, troposphere troposphere, mesosphere, stratosphere, troposphere thermosphere, stratosphere, mesosphere, troposphere troposphere, stratosphere, mesosphere, thermosphere

Imagine you are introducing the lac operan and the trp operon to students who have never learned about it before. complete the table to compare the similarities and differences between the two operons

Were you able to observe the nucleolus in any of the cells if so which ones