Exam 3 chapters 8 -11 Study Guide

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Lecture Quiz 8 Chapter 8 Which of the following best describes what occurs during Prophase? Chomatin condenses chromosomes and spindle fibers begin to form. A diploid cell has twice the number of chromosomes. During which phase of mitosis which is nuclear division does the nuclear membrane begin to reform around chromosomes? Telophase Cytokinesis is defined as cellular division This checkpoint is where the cell determines if the chromosomes were replicated properly? the G2 check point How many chromosomes do we humans have? 46 individual Why is the M checkpoint known as the spindle checkpoint? It determines if all sister chromatids are attached to spindle microtubules Name the mode of reproduction of prokaryotic cells Binary Fission (fill in the blank) How many chromosomes do prokaryotic cells have? 1 Match the following phase of the cell cycle: A. Interphase S B. Interphase G2 C. Mitosis D. Cytokinesis E. Interphase G1 Match the following letters The phase of Mitosis: A Prophase B Cytokinesis C Anaphase D Metaphase E Telophase F Prometaphase

Lab Quiz 8 What plant was used to measure the rate of photosynthesis with the Vernier CO2 sensor? Elodea What color of light is not absorbed by green plants? Green During the chromatography lab what was the purpose of the chromatography solution? It is a non-polar solution that separates components of a mixture based on their solubility. The chemical equation of photosynthesis is the opposite of cellular respiration. True What was the purpose of the Vernier CO2 sensor during the Measuring the Rate of Photosynthesis Lab? To determine the rate of photosynthesis by measuring consumption of CO2 The rate of photosynthesis remained unchanged in the dark. False Lecture Quiz 9 The failure of sister chromatids to separate during meiosis is called: nondisjunction. Match the genetic abnormality with the best description: Monosomy – the loss of 1 chromosome Trisomy – the gain of 1 chromosome 45 Chromosomes – Human Monosomy 47 Chromosomes – Human Trisomy One major difference between meiosis I and meiosis II is that: crossing over occurs in Prophase in meiosis I but not in Prophase II. An important event that occurs in Prophase I is the exchange of chromosome segments between sister homologous chromatids and is called cytokinesis. False During what phase of crossing over in meiosis does crossing over occur? Prophase I The most common trisomy is that of chromosome 21 which leads to: Down Syndrome All of the following are incorrect except: meiosis involves 2 divisions and produces 4 non-identical gametes. When monologues chromosomes align at the center equator it is said that the cell is in the stage of cell division. Metaphase I Meiosis is preceded by an Interphase consisting of G1, S, G2 phases. True During which division of meiosis, I or II, is the genetic content reduced from 2n to 1n? Meiosis I

Lab Quiz 9 Mitosis results in 2 genetically different haploid daughter cells. True False Meiosis involves 2 rounds of nuclear division but only one round of DNA replication which results in haploid cells. True False In the figure #2 shows the (blank) of meiosis stage in meiosis I. ( Metaphase I ) Below is a picture of an onion root tip cells, in the cell labeled C what is forming at the place indicated by the black arrow? A cell wall . Identify the stage of mitosis that the cell table D is in. Metaphase Cells spend most of their life in the stage called interphase. True False Prophase II is where crossing over occurs in meiosis? True False

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Correctly match the labeled cells to their stage of mitosis. 1-A Interphase 2-B Prophase 3-C Anaphase 4-E Telophase

Lecture Quiz 10 The observable traits expressed by an organism: Phenotype. Choose the correct genotype ratio for the Punnett Square below: 2:2 A flower that results in a pink color when their parents are white and red flowers is an example of: Incomplete Dominance A test cross can help determine whether an organism that expresses a dominant trait was a heterozygote or a homozygote. (fill in the blank) ABO blood is an example of codominance . Match the following Homozygote dominant – BB (*2 capital letters*) Homozygous recessive – bb (*2 lower case letters*) Heterozygous – Bb (*1 capital letter and 1 lower case letter*) Choose the correct phenotype ratio for the Punnett Square below: 4:0 The Pea plant was used by Gregor Medel system. (fill in the blank) A trait whose expression is masked by another trait when alleles of both traits are present in an individual is a recessive. How many traits can be tested in a monohybrid? 1

Choose the correct genotype ratio for the Punnett Square below: 1:2:1 Choose the correct genotype ratio for the Punnett Square below: 3:1 Lab Quiz 10 In each case where Mendel crossed true breeding plants as parents, the offspring displayed only 1 of 2 traits, this observation supports principle of genetics? Segregation Which of the following outcomes would you expect from the following cross: tall, round (TTRR) x short, wrinkled (ttrr)? All tall and round What is the expected genotypic ratio of a monohybrid Punnett square with heterozygous parent, ex: Hh x Hr? 2:2, 4:1, 3:1, 1:2:1 (1:2:1) T/F: Because each coin toss is independent of the next, every time that you flip a coin you have an equal chance of getting heads or tails, regardless of what results you obtained on a previous coin flip. ( True ) Which of the following represents a white eyed male? XrY, XRXR, XRY, XrXr ( XrY ) What is the expected phenotypic ratio of a dihybrid Punnett square when both parents are heterozygous, ex: HhAa x HhAa? 9:3:3:1, 8:4:1, 1:2:1, 3:1 ( 9:3:3:1 ) Which of the following represents a red eyed female? XRY, XrY, XrXr, XRXr ( XRXr ) Using two sided coins which head represents the dominant allele H and tails represents the recessive allele h, you can stimulate Mendel’s (blank) cross. ( Monohybrid ) What is the expected phenotypic ratio of a mono Punnett square with a heterozygous parent ex: Hh x Hh? 1:2:1, 2:1, 3:1, 4:1 ( 3:1 )

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The genes located on the X chromosomes is referred to as: (fill in the blank). ( X-linked or sex-linked or sex-linkage or X-linkage ) Lecture Quiz Ch 11 What is the correct order of transcription events? name the 3 in order. Initiation, Elongation, Termination The x-ray diffraction pattern discovered by Rosalind franklin shows that DNA is: ( both helical and has a repeated pattern ). Transcription takes place in the ribosome. T or F ( false ) DNA replicates through which model? ( semiconservative model ) The central dogma refers to the flow of genetic information from DNA to Protein to RNA? T or F ( false ) Transcription occurs in the ( nucleus ) of a eukaryotic cell and translation occurs in the ( ribosome ) of the cell? (fill in the blank) The sugar found in DNA is ( deoxyribose ) and the sugar found in the RNA is ( ribose ). (fill in the blank) Match the compaction of the eukaryotic chromosome with the correct image.

Know the parts of the nucleotide that are represented by the X , [there's a picture you look at]. the answer is: Sugar During the DNA replication primers are removed and the backbone of DNA is sealed by DNA polymerase? T or F ( false )

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