Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Transcribed Image Text:Which of the following labeled structures is meristematic?
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- How many microtubules are in a centrosome? In thedrawing, circle and label one microtubule and describe its structure. Circleand label a triplet.arrow_forwardA pollen pill in a flower containing 18 chromosomes has been divided to form the matrix cells. 1- What kind of division occurred to the mother cell? 2- What is the number of cells produced from the parent cell?arrow_forwardThere are two different pathways for repairing double-strand breaks in the DNA. In which type of cell is homology-directed repair least likely to be able to repair the damage? Choose one. A haploid cell A diploid cell in G1 phase of the cell cycle A diploid cell in G2 phase of the cell cycle All three the same.arrow_forward
- Name the dark, linear, thread like structures that are in some of the onion root tip cells. What molecule of heredity do they contain?arrow_forward|(big/ prokaryote / eukaryote), which lack membrane bound prganelles and a nucleus and (small/ prokaryote / eukaryote), which contain membrane bound organelles. The nucleus of eukaryotic cells separated from the cytoplasm by a (cellular / nuclear / sticky) envelope. The hereditary material is in the nucleus. It exists as (DNA only / histones only/ chromatin) until the cell divides and then we see chromosomes.arrow_forwardCount 100 cells and tally them. Remember the phases you learned in Bio 31 and Anatomy? Draw a pie chart graph showing the phases of Allium root tip. Label each of the phases with the % for each phase: prophase metaphase anaphase telophase interphase provide direction of the phase progression--direction in which to read the graph so the phases of mitosis are in proper order.arrow_forward
- 1)microtubules elongate preferentially from plus end (true or false ) 2) catastrophin proteins hasten the catastrophic depolymerization of microtubules (true or false )arrow_forwardTaxol is a drug that inhibits microtubule dynamics and is often used for cancer chemotherapy because it preferentially affects dividing cells. What microtubule-based structure is likely disrupted by Taxol so that it specifically affects proliferating cells?arrow_forwardWhich of the following is true regarding kinesin 4? O it is located on chromosomes that are not attached to microtubules O it is found on microtubules near the plasma membrane it is located on the microtubules at the centrioles O it is located at the DNA kinetochore O it is located on the tips of DNA chromosomes and attach to polar microtubulesarrow_forward
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