How do cyclins enable cells to pass cell cycle checkpoints? put the following steps in the correct chronological order: 1) cyclin/cdk complex is activated by cak 2) cyclin/cdk complex phosphorylates target proteins 3) cyclin accumulates 4) cyclin becomes ubiquitylated 5) cyclin complexes with cdk

protist eukaryotes that are not plants, animals, or fungi ("misfits")

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides

the tricuspid valve is present between right atrium and right ventricle

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.