BIOL 133 Exam 1 questions with correct
answers
Stem cells are diploid cells that give rise to differentiated cells and replicate themselves in a
process called ____________. - verified answers; self-renewal
___________ are sacs with single outer membranes that can detoxify oxygen radicals. -
verified answers; Peroxisomes
The ER synthesizes what macromolecules? - verified answers; proteins and lipids
The stage of mitosis where chromosomes attach to the spindle at their centromeres and align
along the center of the cell is called what? - verified answers; metaphase
After DNA replication, each chromosome consists of two copies joined at the ___________. -
verified answers; centromeres
During what stage of mitosis does the plasma membrane indent in the center and the
chromosomes line up? - verified answers; anaphase
Which cells form gametes? - verified answers; germline cells
polyploid cell - verified answers; genetically overloaded cell
The first division that occurs in meiosis is called the _________ division, while the second
division is called the __________ division. - verified answers; reduction; equational
, blighted ovum - verified answers; type of miscarriage where the sperm fertilizes a polar body
-- leads to the disorganized formation of cells that is NOT considered an embryo
stages of early prenatal development - verified answers; fertilized ovum
cleavage
morula
blastocyst
gastrula
fraternal twin development - verified answers; two sperm fertilize two oocytes -- dizygotic
True/False: The earliest pedigrees were strictly genealogical, not indicating traits. - verified
answers; true
In autosomal (dominant/recessive) inheritance, if no offspring inherit the mutation in one
generation, its transmission stops. - verified answers; dominant
Cystic fibrosis is an autosomal (dominant/recessive) disease. - verified answers; recessive
Marfan syndrome is an autosomal (dominant/recessive) disease. - verified answers; dominant
Achondoroplasia is an autosomal (dominant/recessive) disease. - verified answers; dominant
Huntington's disease is an autosomal (dominant/recessive) disease. - verified answers;
dominant
answers
Stem cells are diploid cells that give rise to differentiated cells and replicate themselves in a
process called ____________. - verified answers; self-renewal
___________ are sacs with single outer membranes that can detoxify oxygen radicals. -
verified answers; Peroxisomes
The ER synthesizes what macromolecules? - verified answers; proteins and lipids
The stage of mitosis where chromosomes attach to the spindle at their centromeres and align
along the center of the cell is called what? - verified answers; metaphase
After DNA replication, each chromosome consists of two copies joined at the ___________. -
verified answers; centromeres
During what stage of mitosis does the plasma membrane indent in the center and the
chromosomes line up? - verified answers; anaphase
Which cells form gametes? - verified answers; germline cells
polyploid cell - verified answers; genetically overloaded cell
The first division that occurs in meiosis is called the _________ division, while the second
division is called the __________ division. - verified answers; reduction; equational
, blighted ovum - verified answers; type of miscarriage where the sperm fertilizes a polar body
-- leads to the disorganized formation of cells that is NOT considered an embryo
stages of early prenatal development - verified answers; fertilized ovum
cleavage
morula
blastocyst
gastrula
fraternal twin development - verified answers; two sperm fertilize two oocytes -- dizygotic
True/False: The earliest pedigrees were strictly genealogical, not indicating traits. - verified
answers; true
In autosomal (dominant/recessive) inheritance, if no offspring inherit the mutation in one
generation, its transmission stops. - verified answers; dominant
Cystic fibrosis is an autosomal (dominant/recessive) disease. - verified answers; recessive
Marfan syndrome is an autosomal (dominant/recessive) disease. - verified answers; dominant
Achondoroplasia is an autosomal (dominant/recessive) disease. - verified answers; dominant
Huntington's disease is an autosomal (dominant/recessive) disease. - verified answers;
dominant
