Cell Cycle and Cell Division Questions

Biology

Cell Cycle and Cell Division Solutions

Scientists hypothesize that over millions of years, the Y chromosome has lost genes to the X chromosome during meiosis. Explain how this could happen. During which stage of meiosis would this most likely occur?

Biology

Cell Cycle and Cell Division Solutions

QUESTION 7 Synapsis describes The pairing of homologous chromosomes during prophase 1 of meiosis O DNA replication during the interphase of mitosis 1 O The exchange of genetic material between homologous chromosomes during meiosis The exchange of genetic material between homologous chromosomes during mitosis O DNA replication during the interphase of mitosis 2

Biology

Cell Cycle and Cell Division Solutions

Which of the following is not true of codons? O Codons are composed of three nucleotides The same nucleotide can be included in more than one codon in the sequence some codons can code for the same amino acid O Codons are nearly universal with a few exceptions

Biology

Cell Cycle and Cell Division Solutions

Biology What physiological differences between S. pombe and S. cerevisiae make them useful yet complementary tools for studying the molecular mechanisms involved in cell cycle regulation and control?

Biology

Cell Cycle and Cell Division Solutions

Biology This question requires a essay like answer. It is worth 5 marks therefore requires alot of detail and information. Thank you! Question 2.) What is a cyclin dependant kinase and what is it used for? (5 miles)

Biology

Cell Cycle and Cell Division Solutions

Biology GJI 1. Both meiosis and mitosis in human cells starts with “2n" cells. After mitosis, are the daughter cells "In" or "2n"? 2. Both meiosis and mitosis in human cells starts with "2n" cells. After meiosis, are the daughter cells "in" or "2n"? In order to mate veast need to have different tynes 3

Biology

Cell Cycle and Cell Division Solutions

MEIOSIS — PURPOSE: Formation of Sex Cells (A.K.A. GAMETES) - Complete the chart below for each stage of meiosis I Stage Description Sketch Prophase I Metaphase I Homologous chromosomes separate as spindle fibers shorten Telophase I Cytokinesis Cytoplasm divides

Biology

Cell Cycle and Cell Division Solutions

A Comparison of the Major Features of Mitosis and Melosis Mitosis Melosis Purpose of process Number of cells produced Number of nuclear divisions Haploidy or diploidy of resulting cells Genetically identical cells (yes or no) Pairing of homologues (yes or no) Occurrence of crossing-over (yes or no)

Biology

Cell Cycle and Cell Division Solutions

Use the image to the RIGHT to identify the following structures: Structre of DNA N-H A) What is the basic unit (monomer)? H O=P -O CH2 Nitrogenous base (adenine) Phosphate group H OHM Sugar B) Describe the shape: DOO Describe the Orientation (direction) of the 2 Strands: a. DNA 1. Sequence of DNA that codes for a protein and thus determines a trait 2. The two copies of a duplicated chromosome attached to each other at the centromere b. Gene Thymine (1) Adenine (A) Explain Chargaff's Rule: Cytosine (0) Guanine (6) c. Chromosomes CH OHN -HO NH N SUGAR SUGAR d. Homologous Chromosomes SUGAR SUGAR OHN e. Sister Chromatids 3. A nucleic acid molecule, usually double stranded helix, in which each strand consists of nucleotide monomers 4. A pair of chromosomes of the same length, centromere position, and staining pattern that have the same genes for the same characteristics. 5. A cell containing only one set of chromosomes 6. The stage in which the DNA and proteins when it is ready to divide. Homologus chromosome Hordo throoms DNA REPLICATION- f. Haploid Core -88-XX Replication When: S-Phase of Interphase What: Copy DNA in preparation for cell division. Why: To ensure each resulting cell has an exact copy of the DNA. g. Diploid chos Saler chromada 7. A cell containing two sets of chromosomes, one set inherited from each parent A3 DE VÍNBT ENCHON

Biology

Cell Cycle and Cell Division Solutions

QUESLIUII CUMPletion Status: 1 um The figure is a classic electron microscope image that represents a 'snapshot' of gene expression in action. The structures contained in the image are often referred to as 'fir trees'. Which one of the selections below gives a correct description of what process has been captured by the snapshot, as well as what the molecular composition of the trunks and the branches of the 'trees' are? O A. process in image: simultaneous transcription and translation composition of trunks': DNA composition of 'branches': nascent polypeptides O B. process in image: translation composition of 'trunks': mRNA composition of 'branches': nascent polypeptides O C. process in image: transcription composition of 'trunks': DNA composition of branches': nascent mRNA O D.process in image: transcription composition of "trunks': mRNA composition of 'branches': nascent polypeptides O E. process in image: simultaneous translation and transcription composition of 'trunks': RNA composition of 'branches': nascent polypeptides

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Cell Cycle and Cell Division Solutions

4 pts Question 5 You forget to wash your cutting board while making dinner, and then your guests are late. The lettuce in your salad was contaminated with pathogenic Salmonella enterica from the raw chicken at an initial population of 4 bacteria, has a generation time of 45 minutes, and the salad was eaten after 2.50 hours. What is the final population of Salmonella enterica in the salad? Np = N;x21

Biology

Cell Cycle and Cell Division Solutions

PURPOSE: MITOSIS-Formation of Body Cells (Somatic Cells) Stages Picture Interphase G1, S, G2 Description Phase of the cell cycle where a typical cell spends most of its life. During this phase, the cell grows and carries out normal life functions. The cell copies its DNA (S-phase) and prepares for mitosis. Prophase Metaphase Anaphase Telophase Cytokinesis Sexual Reproduction Asexual Reproduction Pros: Cons: Pros: Cons: Definition & Exaples: Definition & Examples: