Exam 2: Cells

For each stage of mitosis, give a two- or three-sentence description of events. Your answer should include the names of the four stages and proper use of the following terms: chromatin, chromosome, chromatid, and centromere.

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Question 1

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During prophase, the chromatin condenses into visible chromosomes, each consisting of two sister chromatids held together by a centromere. The nuclear envelope breaks down, and spindle fibers begin to form.

In metaphase, the chromosomes line up along the metaphase plate, and the spindle fibers attach to the centromeres of each chromosome. This ensures that each sister chromatid will be pulled to opposite poles of the cell during anaphase.

During anaphase, the sister chromatids are pulled apart by the spindle fibers and move towards opposite poles of the cell. Once separated, each chromatid is considered a separate chromosome.

In telophase, the chromosomes reach the poles of the cell, and the nuclear envelope reforms around them. The chromosomes begin to decondense back into chromatin, and the spindle fibers disassemble. This marks the end of mitosis and the beginning of cytokinesis.

Which letter identifies an organelle that may contain more than 40 digestive enzymes used to break down the contents of vesicles?

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Question 2

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_____ is the process by which cell division results in two daughter cells that are identical to the original cell.

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Question 3

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Mitosis

Cytosol is an example of intracellular fluid.

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Question 4

A neoplasm can result from uncontrolled cell division.

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Question 5

Which letter identifies the site of protein synthesis?

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Question 6

The process that allows digestive cells to secrete enzymes is called _____.

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Question 7

Meiosis I begins with a ___ (diploid/haploid) starting cell and ends with two cells, each with the _ (diploid/haploid) number of chromosomes. During meiosis II, each of the two _ (diploid/haploid) cells formed during meiosis I divides; the net result is four _ (diploid/haploid) gametes that are genetically different from the original ___ (diploid/haploid) starting cell.

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Question 8

When glucose bonds to proteins in tissues, it contributes to the stiffening and loss of elasticity that occur in aging tissues.

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Question 9

The process that results in the destruction of the "webbing" found between the digits of the hand and foot in early human fetal development is called

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Question 10

During which phase do centromeres divide so that the sister chromatids separate?

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Question 11

In passive processes, substances move across the plasma membrane 1. with the use of ATP 2) up (or against) a concentration gradient 3) down (or along) a pressure gradient 4) equally in all directions

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Question 12

Which letter indicates interphase; the period during which DNA is replicated?

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Question 13

The proteins found in the phospholipid bilayer permit the movement of most substances, including oxygen and carbon dioxide, across the membrane.

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Question 14

A cell is recognized as "self" or "non-self" by its

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Question 15

Name the organelle that acts as the site of protein synthesis. What two molecular components make up its structure?

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Question 16

A mechanism that involves the formation of pseudopods in order to move solid particles into cells is called _____.

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Question 17

Rough endoplasmic reticulum differs from smooth endoplasmic reticulum in that it has _ associated with it; therefore rough endoplasmic reticulum assists in the production and temporary storage of _.

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Question 18

The Golgi complex packages and sorts proteins destined for export from a cell.

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Question 19

Explain how the rough endoplasmic reticulum, smooth endoplasmic reticulum, and Golgi complex interact. Use specific examples of materials produced by each.

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Question 20

Showing 1 - 20 of 75

For each stage of mitosis, give a two- or three-sentence description of events. Your answer should include the names of the four stages and proper use of the following terms: chromatin, chromosome, chromatid, and centromere.

Which letter identifies an organelle that may contain more than 40 digestive enzymes used to break down the contents of vesicles?

_____ is the process by which cell division results in two daughter cells that are identical to the original cell.

Cytosol is an example of intracellular fluid.

A neoplasm can result from uncontrolled cell division.

Which letter identifies the site of protein synthesis?

The process that allows digestive cells to secrete enzymes is called _____.

When glucose bonds to proteins in tissues, it contributes to the stiffening and loss of elasticity that occur in aging tissues.

The process that results in the destruction of the "webbing" found between the digits of the hand and foot in early human fetal development is called

During which phase do centromeres divide so that the sister chromatids separate?

In passive processes, substances move across the plasma membrane 1. with the use of ATP 2) up (or against) a concentration gradient 3) down (or along) a pressure gradient 4) equally in all directions

Which letter indicates interphase; the period during which DNA is replicated?

The proteins found in the phospholipid bilayer permit the movement of most substances, including oxygen and carbon dioxide, across the membrane.

A cell is recognized as "self" or "non-self" by its

Name the organelle that acts as the site of protein synthesis. What two molecular components make up its structure?

A mechanism that involves the formation of pseudopods in order to move solid particles into cells is called _____.

Rough endoplasmic reticulum differs from smooth endoplasmic reticulum in that it has _____ associated with it; therefore rough endoplasmic reticulum assists in the production and temporary storage of _____.

The Golgi complex packages and sorts proteins destined for export from a cell.

Explain how the rough endoplasmic reticulum, smooth endoplasmic reticulum, and Golgi complex interact. Use specific examples of materials produced by each.

An Introduction to the Human Body

Tissues

Development

The Integumentary System

Bone Tissue

The Skeletal System: the Axial Skeleton

The Skeletal System: the Appendicular Skeleton

Joints

Muscular Tissue

The Muscular System

The Cardiovascular System: Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels

The Lymphatic Lymphoid System and Immunity

Nervous Tissue

The Spinal Cord and the Spinal Nerves

The Brain and the Cranial Nerves

The Autonomic Nervous System

Somatic Senses and Motor Control

Special Senses

The Endocrine System

The Respiratory System

The Digestive System

The Urinary System

The Reproductive Systems

Surface Anatomy

Filters

Rough endoplasmic reticulum differs from smooth endoplasmic reticulum in that it has _ associated with it; therefore rough endoplasmic reticulum assists in the production and temporary storage of _.