Cyclins Samenvattingen, Aantekeningen en Examens

10.1Q1 Define three stages of the cell cycle? Correct Answer-Interphase G0: where cells rest G1: where cells grow and expand S: where DNA is replicated G2: where cells repair damaged DNA and duplicate centrosomes Cell division (M) phase Where cells undergo nuclear and cytoplasmic division 10.2Q1 What are cyclin-dependent kinases (Cdks)? Correct Answer-A small family of protein kinases that regulate the transition of various phases in the cell cycle. CDKs are small proteins that mainl...

ONS/ONCC CHEMOTHERAPY IMMUNOTHERAPY CERTIFICATE LATEST EXAM WITH 100% CORRECT ANSWERS G1 - correct answer first growth phase (or first gap) 2 - correct answer How many cells are produced each time a cell divides? mitosis - correct answer the process of cell division interphase - correct answer The time when a cells grows and replicates DNA in preparation for cell division. G1 - correct answer most important checkpoint in cell division cell division - correct answer Ph...

What activates mTOR? - PKB What is mTOR? - activated by PKB and is sensitive to rapomycin; stimulates cell growth and metabolism What are cellular responses in response to activation of PKB/AKT? - promotes glucose uptake promotes cell survival by Ph. and inactivating pro-apop proteins such as BAD promotes cell growth Upon male stimulation, what is released in a G2 arrested oocyte to enter meiosis? - progesterone What is progesterone? - released by female's ovary; induces G2 arrest...

Cell Cycle correct answer: How the cell replicates its DNA when it needs to -pathway that allows us to grow What does a cell have to decide post mitosis? correct answer: If it wants to enter cell cycle or not What happens if the cell cycle production is not efficient? correct answer: Mutation or death What are the purposes of checkpoints? correct answer: They can prevent mutations and overall death of cell How does a cell cycle start? correct answer: A signal comes from externa...

IB Biology - Scientists of IB Bio 100% Correct Robert Hooke First person to observe cells and write the cell theory Ernst Ruska Developed the electron microscope in 1930s and won the Nobel Prize for it Friedrich Wohler Urea synthesis which falsified the theory of vitalism Davson-Danielli Proposed the 'protein sandwich' model for membrane structure Louis Pasteur Experiment with broth that confirmed that spontaneous generation of cells and organisms does not occur on Earth ...

Growth factors stimulate what? (A) cyclin production. (B) the cell to skip the S and G1 phases of interphase and undergo mitosis directly. (C) Cdk's to synthesize enzymes that digest cyclins. (D) the cell to ignore the checkpoints of the cell cycle. (E) NONE OF THE ABOVE - (A) cyclin production What is a major difference between mitosis and meiosis? (A) Meiosis produces two daughter cells instead of the four daughter cells produced in mitosis. (B) Meiosis produces genetically ide...

ONS/ONCC CHEMOTHERAPY IMMUNOTHERAPY CERTIFICATE EXAM 2024 WITH 100% ACCURATE SOLUTIONS first growth phase (or first gap) - correct answer G1 How many cells are produced each time a cell divides? - correct answer 2 the process of cell division - correct answer mitosis The time when a cells grows and replicates DNA in preparation for cell division. - correct answer interphase most important checkpoint in cell division - correct answer G1 Phases of ___________ ___________ includ...

True or False: For every kinase there is an equal and active phosphatase correct answer: True Name one example of a protein signal correct answer: Epinephrine Name one small molecule signal correct answer: Acetylcholine or cortisol What are three essential parts of a signaling cascade? correct answer: Initial signal, Binding, and Termination How is a signal turned off? correct answer: Phosphorylate/Dephosphorylate or signal degradation What is a second messenger? correct answ...

Cell division is used for which of the following ? - Reproduction of single-celled organisms, growth of multicellular organisms, repair and replacement of cells, and sperm and egg production Asexual and sexual reproduction differs in that sexual reproduction_____________ - Can produce great variation among the offspring (Meiosis) Asexual Reproduction ____________ - Produces offspring genetically identical to the parent (Mitosis) Most of the time, DNA is in the form of____________ - Euch...

BIO 235 HW Questions And Answers All Correct Why do mutations in genes that encode DNA-repair enzymes often produce a predisposition to cancer? A. The loss of DNA-repair enzymes makes a cell more susceptible to viral infection. B. Cancer is the result of an accumulation of mutations in tumor-suppressor genes and proto-oncogenes and a deficiency in DNA repair can accelerate this process. C. Genes for DNA-repair enzymes are usually genetically linked to proto-oncogenes on chromosomes, so muta...