STAAR EOC Biology Cell Reproduction — practice questions
26 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice STAAR EOC Biology Cell Reproduction in the app →How is the genome of a prokaryote arranged inside the cell?How does antibiotic resistance often spread through a colony of bacteria?A human somatic cell carries 46 chromosomes. How are those 46 made up?Human gametes carry a single set of chromosomes. What is that condition called?Two homologous chromosomes carry the same genes at the same positions. Why are those genes not identical?Wrapping DNA around cores of histone proteins is the first level of packing. How much does it shorten the moleNucleosomes and their linker DNA coil into a 30 nm fiber. How much shorter is the chromosome then?The cell cycle splits into two major phases. What are they?Which two structures are both duplicated during the S phase of interphase?What is a cell doing during the G2 phase of interphase?Which stage of mitosis follows immediately after prophase?What job does the kinetochore do during prometaphase?Where do the chromosomes line up during metaphase?What has to break down before sister chromatids can separate in anaphase?How does an animal cell pinch itself into two during cytokinesis?A plant cell must build a new wall between its daughter cells. Where does the material come from?A rapidly dividing human cell finishes its cycle in 24 hours. Which phase takes the least time?At how many main checkpoints can a eukaryotic cell halt its own cycle, and where do they sit?Cyclins and cyclin dependent kinases both drive the cycle forward. Which one sets the timing, and how?A cyclin has bound its cyclin dependent kinase. What else must happen before the complex is fully active?Retinoblastoma protein binds the transcription factor E2F. What does that binding stop?A cell has DNA damage that its repair enzymes cannot fix. What can p53 do next?Which step of eukaryotic cell division is absent from bacterial binary fission?Which protein forms the ring that pinches a dividing bacterium in two?FtsZ in bacteria and tubulin in eukaryotes are described as homologous. Which shared feature supports that?How is bacterial DNA packaged compared with the DNA of a eukaryote?