Biology Today and Tomorrow without Physiology (MindTap Course List)
5th Edition
ISBN: 9781305117396
Author: Cecie Starr, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Our somatic cells’ DNA is distributed among 46 ________ in the nucleus. a. nucleosomes b. chromatids c. nucleoli d. chromosome
In eukaryotic chromosomes, DNA wraps around_____ . a. histone proteins d. centromeres b. sister chromatids e. nucleosomes c. the double helix f. mutations
When DNA synthesis occurs in a cell, it results in the formation of _____.
A. homologs
B. duplicated centrosomes
C. more microtubules
D. sister chromatids
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- The _____ is the physical location that sister chromatids are held together and where microtubules physically attach during mitosis. a. centriole b. centrosome c. centromere d. chromatinarrow_forwardHomologous chromosomes_____ . a. are inherited from two parents b. are sister chromatids c. are different in size and in lengtharrow_forwardinterphase chromosomes are __________ while mitotic chromosomes are a. composed of 4 DNA strands; composed of 2 DNA strand b. composed of 1 DNA Strand; composed of 2 DNA strands c.composed of 2 DNA strands; composed of 1 DNA strand d. composed of 2 DNA strands; composed of 4 DNA strandsarrow_forward
- After DNA replication, a eukaryotic chromosome______ . a. consists of two sister chromatids b has a characteristic X shape c. is constricted at the centromere d. all of the abovearrow_forwardChromosomes are visible under microscope during cell division because a. Thickening of chromatins b. Disappearance of the nucleoli c. Disintegration of the nuclear membrane d. Duplication of the DNAarrow_forwardIn eukaryotic cells, the nuclear envelope has to disappear in order to directly permit _____. A. the splitting of centrosomes B. the attachment of microtubules to kinetochores C. the extra condensation of chromosomes D. cytokinesisarrow_forward
- A nucleosome consists of (a) DNA and scaffolding proteins (b) scaffolding proteins and histones (c) DNA and histones (d) DNA, histones, and scaffolding proteins (e) histones onlyarrow_forwardMorphology of Chromosomes can bebest studied at ______A. Interphase B. ProphseC. Metaphase D. Zygotenearrow_forwardMatching Terms: A. Prophase B. Anaphase C. Telophase D. Metaphase E. Interphase _____1. The sister chromatids are moving apart. _____2. The nucleolus begins to fade from view. _____3. A new nuclear membrane is forming. _____4. The cell membrane begins to pinch in. _____5. The chromosomes de-condense. _____6. The chromosomes are located at the equator. _____7. The nuclear membrane begins to fade from view. _____8. The chromosomes move towards the poles of the cell. _____9. Sister chromatids line up along the equator. _____10. The division (cleavage) furrow appears _____11. The spindle is formed. _____12. Chromosomes are not visible. _____13. The cell plate begins to be built. _____14. Chromosomes replicated. _____15. The reverse of prophase.arrow_forward
- Human body cells are diploid, which mean they______ . a. divide to form two cells b. have two full sets of chromosomes c. contain two chromosomesarrow_forwardD. Organelle A. Two identical that builds copies of DNA microtubule "highways" to guide DNA B. "staple" that holds DNA copies together C. DNA that is same length and has same instructions; one from mother and one from father Match the labeled structures to their proper term.arrow_forwardLong strands of DNA are called _______. a autosomes b genes c chromosomes d chromatidsarrow_forward
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