Scientists believe that all life on earth originated from which type of organism

Select the statement that is false. The sugar of RNA differs from the sugar of DNA. Three main types of RNA exist. If one side of an RNA chain is GAT, the other side must be CTA.

Which mates are least likely to produce offspring that have the disorder? male 1 and female 2 O male 3 and female 4 male 5 and female 6 male 9 and female 10

What is the function of the mitochondria why do plants need both a chloroplasts and mitochondria?

Which of the following processes causes one tectonic plate to sink beneath another at a subduction zone? a) folding b) slab push c) ridge push d) sea-floor spreading

Cyanide blocks the last electron carrier in the mitochondrial membrane from delivering its electrons to oxygen. In response, electrons get backed up all along the electron transport chain. How specifically does cyanide kill you?

Which body parts regulate heart rate, brething, swallowing, sneezing, and coughing?

Some steps in cell division are shown below: 1. Haploid chromosomes condense 2. Number of chromosomes are reduced to half 3. Chromosomes move to the equatorial plane between the poles 4.

A morula has approximately 16 cells. what is the rate of mitotic division that takes place between the 4-cell stage and the morula?

How many types of muscle tissue are there?

Why do some stars twinkle