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When water droplets stick to each other, a property called cohesion this is due to:

Two organelles that are believed to have once been free-living bacterial cells are __________________ and _________________. 

Carbon dioxide (CO2) forms when an atom of carbon shares two pairs of electrons with one atom of O and two pairs of electrons with a second atom of O. What type of bonds are forming between C and O?

The mRNA has a three-nucleotide sequence called a _________, while the molecule transporting the amino acid has a complementary sequence called a(n) _______________. 

Animal cells are held in place by attachments between membrane proteins and the ____________.

The nucleotide sequences on DNA that actually have information encoding a sequence of amino acids are: 

Long stretches of repeated nucleotides on the ends of linear eukaryotic chromosomes are called

Which type of cell junction prevents materials from passing in between cells?

All living things are able to maintain stable internal conditions, whether they are unicellular or complex, multicellular organisms. This property is called: 

The final three-dimensional shape of a protein is its ____________ structure.