Which of the following statements is false?

A. DNA replication occurs only in S phase.
B. The activation of S-Cdk helps prevent the onset of M phase.
C. The activation of S-Cdk helps prevent DNA replication occurring more than once each cycle.
D. The activation of S-Cdk initiates DNA replication.

Explanation:

All events of cell cycle is regulated by a heterodimeric protein complex called cyclin CDKs, cyclin is the regulatory subunit which binds to CDKs and activate them whereas CDKs(cyclin dependent kinases) is the catalytic subunit where cyclin bound CDKs become active and act as serine threonine kinase and phosphorylate target proteins

The activation of S-Cdk helps prevent the onset of M phase because S phase cyclin CDK complex trigger initiation of DNA replication from pre replication complex and inhibits rebinding of components of pre replication complex

there are mainly three domains in biological classification namely; archaea, bacteria, and eukarya.

archaea includes all the prokaryotic cells which are characterized by their lipid membranes. they have branched hydrocarbon which is attached to glycerol through an ether linkage.

bacteria includes all the prokaryotic cells, the cell membrane of which are made up of the unbranched fatty acid chain. in addition, they are attached to glycerol through an ester bond.

eukarya includes all the eukaryotic cells, that is, the cells contain a nucleus and other membrane-bound cell organelles.

they can be autotrophic as well as heterotrophic, unicellular as well as multicellular

they include kingdoms like protista, plantae, animalia, fungi et cetera.

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explanation:

i think the answer is g1

hope i

-lavira: )