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Openstax Anatomy and Physiology
Chapter 3 Questions and Correct
Answers/ Latest Update / Already
Graded
Active Transport
Ans: Form of transport across the cell membrane that requires input of
cellular energy
Amphipathic
Ans: Describes a molecule that exhibits a difference in polarity between
its two ends, resulting in a difference in water solubility
Anaphase
Ans: Third stage of mitosis (and meiosis), during which sister chromatids
separate into two new nuclear regions of a dividing cell
Anticodon
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Ans: Consecutive sequence of three nucleotides on a tRNA molecule
that is complementary to a specific codon on an mRNA molecule
Autolysis
Ans: Breakdown of cells by their own enzymatic action
Autophagy
Ans: Lysosomal breakdown of a cell's own components
Cell Cycle
Ans: Life cycle of a single cell, from its birth until its division into two new
daughter cells
Cell Membrane
Ans: Membrane surrounding all animal cells, composed of a lipid bilayer
interspersed with various molecules; also known as plasma membrane
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Centriole
Ans: Small, self-replicating organelle that provides the origin for
microtubule growth and moves DNA during cell division
Centromere
Ans: Region of attachment for two sister chromatids
Centrosome
Ans: Cellular structure that organizes microtubules during cell division
Channel Protein
Ans: Membrane-spanning protein that has an inner pore which allows
the passage of one or more substances
Checkpoint
Openstax Anatomy and Physiology
Chapter 3 Questions and Correct
Answers/ Latest Update / Already
Graded
Active Transport
Ans: Form of transport across the cell membrane that requires input of
cellular energy
Amphipathic
Ans: Describes a molecule that exhibits a difference in polarity between
its two ends, resulting in a difference in water solubility
Anaphase
Ans: Third stage of mitosis (and meiosis), during which sister chromatids
separate into two new nuclear regions of a dividing cell
Anticodon
,2 | Page
Ans: Consecutive sequence of three nucleotides on a tRNA molecule
that is complementary to a specific codon on an mRNA molecule
Autolysis
Ans: Breakdown of cells by their own enzymatic action
Autophagy
Ans: Lysosomal breakdown of a cell's own components
Cell Cycle
Ans: Life cycle of a single cell, from its birth until its division into two new
daughter cells
Cell Membrane
Ans: Membrane surrounding all animal cells, composed of a lipid bilayer
interspersed with various molecules; also known as plasma membrane
, 3 | Page
Centriole
Ans: Small, self-replicating organelle that provides the origin for
microtubule growth and moves DNA during cell division
Centromere
Ans: Region of attachment for two sister chromatids
Centrosome
Ans: Cellular structure that organizes microtubules during cell division
Channel Protein
Ans: Membrane-spanning protein that has an inner pore which allows
the passage of one or more substances
Checkpoint
