BIOS 1700 Exam 5 Questions with Correct Answers Latest Update 2025/2026
The division of the cell's cytoplasm in a eukaryotic cell is known as: - Answers cytokinesis
Which statement represents a misconception about sister chromatids? - Answers Sister
chromatids are formed when the prokaryotic circular chromosome attaches at the plasma
membrane.
A zygote is: - Answers diploid.
Nondisjunction can occur in both mitosis and meiosis. - Answers true
An early observation in the study of the development of sea urchin embryos was that there were
several enzymes that became active and then inactive in synchrony with the pattern of rapidly
repeating cell divisions. These enzymes had a common characteristic in that they
phosphorylate (add phosphate groups to) other proteins. Furthermore, they are only active when
bound to another protein—ones that vary in abundance at specific times during the cell cycle.
These enzymes are: - Answers cyclin dependent kinases.
A proto-oncogene is a "normal" gene that, if mutated, can become an oncogene and lead to a
cell becoming cancerous. - Answers true
Reproduction by mitotic cell division: - Answers results in two daughter cells that are genetically
identical
What protein forms the contractile ring during cytokinesis in animal cells? - Answers actin
When do sister chromatids separate in meiosis? - Answers anaphase II
Trisomy 21 (Down syndrome) is one of only a few examples of an autosomal trisomy in which
the fetus develops to term and is born alive. - Answers true
An early observation in the study of the development of sea urchin embryos was that there were
several proteins that appeared and then disappeared in synchrony with the pattern of rapidly
repeating cell divisions. Because of this up-and-down pattern of abundance these proteins
became known as: - Answers cyclins.
Which of the answer choices could be a proto-oncogene? - Answers -a gene encoding a cell-
surface receptor
-a gene encoding a protein kinase
-a gene encoding a growth factor
-a gene encoding a G-protein
Suppose you are observing some cells with a microscope, and you see a cell that appears to be
The division of the cell's cytoplasm in a eukaryotic cell is known as: - Answers cytokinesis
Which statement represents a misconception about sister chromatids? - Answers Sister
chromatids are formed when the prokaryotic circular chromosome attaches at the plasma
membrane.
A zygote is: - Answers diploid.
Nondisjunction can occur in both mitosis and meiosis. - Answers true
An early observation in the study of the development of sea urchin embryos was that there were
several enzymes that became active and then inactive in synchrony with the pattern of rapidly
repeating cell divisions. These enzymes had a common characteristic in that they
phosphorylate (add phosphate groups to) other proteins. Furthermore, they are only active when
bound to another protein—ones that vary in abundance at specific times during the cell cycle.
These enzymes are: - Answers cyclin dependent kinases.
A proto-oncogene is a "normal" gene that, if mutated, can become an oncogene and lead to a
cell becoming cancerous. - Answers true
Reproduction by mitotic cell division: - Answers results in two daughter cells that are genetically
identical
What protein forms the contractile ring during cytokinesis in animal cells? - Answers actin
When do sister chromatids separate in meiosis? - Answers anaphase II
Trisomy 21 (Down syndrome) is one of only a few examples of an autosomal trisomy in which
the fetus develops to term and is born alive. - Answers true
An early observation in the study of the development of sea urchin embryos was that there were
several proteins that appeared and then disappeared in synchrony with the pattern of rapidly
repeating cell divisions. Because of this up-and-down pattern of abundance these proteins
became known as: - Answers cyclins.
Which of the answer choices could be a proto-oncogene? - Answers -a gene encoding a cell-
surface receptor
-a gene encoding a protein kinase
-a gene encoding a growth factor
-a gene encoding a G-protein
Suppose you are observing some cells with a microscope, and you see a cell that appears to be
