Textbook Question
The nuclear substance composed of histone proteins and DNA is:
a. Chromatin
b. The nucleolus
c. Nucleoplasm
d. Nuclear pores
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Ch. 3 Cells: The Living Units
Hoehn, Haynes, Abbott12th EditionMarieb Human Anatomy & PhysiologyISBN: 9780138242732
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Table of contents
- Ch. 1 The Human Body: An Orientation25
- Ch. 2 Chemistry Comes Alive24
- Ch. 3 Cells: The Living Units24
- Ch. 4 Tissue: The Living Fabric19
- Ch. 5 The Integumentary System12
- Ch. 6 Bones and Skeletal Tissues19
- Ch. 7 The Skeleton14
- Ch. 8 Joints7
- Ch. 9 Muscles and Muscle Tissue26
- Ch. 10 The Muscular System25
- Ch. 11 Fundamentals of the Nervous System and Nervous Tissue23
- Ch. 12 The Central Nervous System25
- Ch. 13 The Peripheral Nervous System and Reflex Activity30
- Ch. 14 The Autonomic Nervous System16
- Ch. 15 The Special Senses26
- Ch. 16 The Endocrine System26
- Ch. 17 Blood27
- Ch. 18 The Cardiovascular System: The Heart25
- Ch. 19 The Cardiovascular System: Blood Vessels27
- Ch. 20 The Lymphatic System and Lymphoid Organs and Tissues16
- Ch. 21 The Immune System: Innate and Adaptive Body Defenses27
- Ch. 22 The Respiratory System21
- Ch. 23 The Digestive System31
- Ch. 24 Nutrition, Metabolism, and Energy Balance26
- Ch. 25 The Urinary System26
- Ch. 26 Fluid, Electrolyte, and Acid-Base Balance24
- Ch. 27 The Reproductive System24
- Ch. 28 Pregnancy and Human Development25
- Ch. 29 Heredity11
Hoehn, Haynes, Abbott12th EditionMarieb Human Anatomy & PhysiologyISBN: 9780138242732Not the one you use?Change textbook
Chapter 3, Problem 8
The phase of mitosis during which centrioles reach the poles and chromosomes attach to the spindle is
a. Anaphase
b. Metaphase
c. Prophase
d. Telophase
Verified step by step guidance1
Recall the main phases of mitosis: prophase, metaphase, anaphase, and telophase, each with distinct events.
Understand that centrioles moving to the poles and the formation of the spindle apparatus occur early in mitosis.
Recognize that chromosomes attach to the spindle fibers at their centromeres during a specific phase to prepare for alignment.
Identify that in prophase, centrioles migrate to opposite poles and spindle fibers begin to form, but chromosomes are not yet fully attached.
Conclude that the phase where centrioles have reached the poles and chromosomes are attached to the spindle is metaphase.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Phases of Mitosis
Mitosis is a process of cell division consisting of distinct phases: prophase, metaphase, anaphase, and telophase. Each phase has specific events that prepare the cell to divide its chromosomes equally into two daughter cells.
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03:21
Phases of Mitosis
Role of Centrioles and Spindle Fibers
Centrioles help organize the spindle fibers, which are crucial for chromosome movement. During mitosis, centrioles migrate to opposite poles of the cell, forming the spindle apparatus that attaches to chromosomes to guide their separation.
Recommended video:
04:02Centrosomes & Mitotic Spindles
Chromosome Alignment and Attachment
Chromosomes attach to spindle fibers at their centromeres during metaphase, aligning at the cell's equatorial plane. This alignment ensures that each daughter cell receives an identical set of chromosomes during subsequent phases.
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01:58Metaphase
Related Practice
Textbook Question
The information sequence that determines the nature of a protein is:
a. Nucleotide
b. Gene
c. Triplet
d. Codon
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Textbook Question
Cells lining the trachea have whiplike motile extensions on their free surfaces. What are these extensions, what is their source, and what is their function?
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Textbook Question
The RNA species that travels from the nucleus to the cytoplasm carrying the coded message specifying the sequence of amino acids in the protein to be made is
a. mRNA
b. tRNA
c. rRNA
d. all of these
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Textbook Question
The RNA synthesized on one of the DNA strands is:
a. mRNA
b. tRNA
c. rRNA
d. all of these.
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Textbook Question
Osmosis always involves:
a. A selectively permeable membrane
b. A difference in solute concentration
c. Diffusion
d. Active transport
e. a, b, and c
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