unit 7 Flashcards

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1
Q

the ability of cells to pass on their characteristics to new cells is most directly related to the ability of

A

chromosomes to duplicate

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2
Q

what term is used when a tumor is non cancerous

A

benign

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3
Q

what kind of bonds form between base pairs

A

hydrogen pairs

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4
Q

a cell duplicates its chromosomes during which phase

A

interphase S

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5
Q

what causes the DNA to move in the electrophoresis lab

A

electricity

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6
Q

during the process of mitosis, chromatids seperate into daughter chromosomes during which phase

A

anaphase

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7
Q

during which phase of the cell cycle are the chromosomes duplicated in preparation for division

A

interphase

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8
Q

the types of enzymes produced in a cell are regulated by the

A

order of nucleotides in DNA molecules

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9
Q

what is true of telophase

A

two nuclear membranes have formed and the nucleolus reappeared

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10
Q

during what phase of mitosis do the chromosomes line up at the equator

A

metaphase

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11
Q

DNA gel electrophoresis seperates DNA fragments by

A

size

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12
Q

what caused DNA pieces to separate into a banding pattern

A

the DNA pieces migrated through the electrophoresis gel at varying speeds due to their lengths

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13
Q

what answer gives the stages of mitosis in proper chronological order

A

prophase, metaphase, anaphase, telephase

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14
Q

during which phase of mitosis do the sister chromatids get pulled towards opposite poles

A

anaphase

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15
Q

an inheritable mutation may occur if an organism has a change in its

A

DNA structure

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16
Q

which of the following is true of prophase

A

the chromosomes have replicated and started to become visible

17
Q

the purpose of the respiratory system in mammals is to provide the

A

mitochondria with oxygen needed for cellular respiration

18
Q

what happens in interphase G2

A

organelle replication

19
Q

what protein is responsible for unzipping the DNA for replication

A

DNA helicase

20
Q

when looking into a microscope you see a line of homologous chromosomes near the center of the cell, what phase is this

A

metaphase

21
Q

what molecule is most responsible for determining a persons eye color, body structure, and cellular enzyme reconstruction

A

deoxyribonucleic acid

22
Q

during DNA replication, DNA molecules seperate into single strands, which are then used to create two identical strands of DNA. this process ensures…

A

that the daughter cells are genetically identical to parent cells