UNIT 5 bio review guide Flashcards

(53 cards)

1
Q

Q: What is asexual reproduction?

A

A: Reproduction through a single parent.

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2
Q

Q: How many parents are involved in asexual reproduction?

A

A: One parent.

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3
Q

Q: How do offspring compare to the parent in asexual reproduction?

A

A: Offspring are exact clones with the same DNA and genetic makeup.

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4
Q

Q: Give an advantage of asexual reproduction.

A

A: It is more efficient.

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5
Q

Q: Give a disadvantage of asexual reproduction.

A

A: A population can be wiped out by a virus or disease targeting them.

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6
Q

Q: Define binary fission.

A

A: A form of asexual reproduction where an organism splits into a parent and smaller daughter cell.

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7
Q

Q: Define budding.

A

A: Offspring grows out of the parent cell until it separates and becomes its own organism.

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8
Q

Q: Define regeneration.

A

A: Lost parts of an organism grow into their own organisms.

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9
Q

Q: Define fragmentation.

A

A: An organism breaks into pieces, each becoming a new organism.

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10
Q

Q: Define vegetative propagation.

A

A: Plants produce offspring through a runner, which serves as the basis for the new organism.

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11
Q

Q: Where is DNA located in the cell?

A

A: In the nucleus.

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12
Q

Q: What is a gene?

A

A: Instructions for creating specific proteins located in DNA.

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13
Q

Q: What is the relationship between chromosomes and genes?

A

A: Chromosomes are made up of genes.

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14
Q

Q: List the DNA bases.

A

A: Adenine, Thymine, Guanine, Cytosine.

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15
Q

Q: How do DNA bases pair?

A

A: A - T, T - A, G - C, C - G.

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16
Q

Q: List the RNA bases.

A

A: Adenine, Uracil, Guanine, Cytosine.

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17
Q

Q: How do RNA bases pair?

A

A: A - U, T - A, G - C, C - G.

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18
Q

Q: What is DNA’s sugar called?

A

A: Deoxyribose.

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19
Q

Q: What is RNA’s sugar called?

A

A: Ribose.

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20
Q

Q: What is DNA replication?

A

A: The process of copying DNA for growth and repair.

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21
Q

Q: Where does DNA replicate?

A

A: In the nucleus.

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22
Q

Q: List the main enzymes involved in DNA replication.

A

A: Helicase, Polymerase, Ligase.

23
Q

Q: What does helicase do?

A

A: Unzips the DNA strand.

24
Q

Q: What does polymerase do?

A

A: Adds nucleotides to form a new DNA strand.

25
Q: What does ligase do?
A: Glues DNA strands together.
26
Q: What is protein synthesis?
A: Building proteins from amino acids using mRNA, rRNA, and tRNA.
27
Q: What are the building blocks of proteins?
A: Amino acids.
28
Q: List the three types of RNA and their functions.
mRNA: Carries genetic information from DNA to ribosomes. rRNA: Structural component of ribosomes. tRNA: Transfers amino acids to ribosomes for protein synthesis.
29
Q: What are the two steps of protein synthesis?
A: Transcription and translation.
30
Q: What is transcription?
A: Process of copying DNA to mRNA.
31
Q: Where does transcription occur?
A: In the nucleus.
32
Q: What is translation?
A: Process where mRNA is decoded to produce proteins.
33
Q: Where does translation occur?
A: In the cytoplasm.
34
Q: What is a codon?
A: A group of three bases on mRNA coding for an amino acid.
35
Q: What is an anticodon?
Complementary to the mRNA codon, ensures proper amino acid placement.
36
Q: What is a codon?
A: A group of three bases on mRNA coding for an amino acid.
37
Q: Translate mRNA: A: CCG UAC GAA GGC UAG AUG CAU GAU
PRO, TYR, GLU, GLY, STOP, MET, HIS, ASP.
38
What is a mutation?
A: An error in DNA sequence during replication.
39
Q: What is the cell cycle?
A: Process by which a cell reproduces.
40
Q: List the three parts of the cell cycle.
A: Interphase, Mitotic phase, Cytokinesis.
41
Q: What percentage of the cell cycle is interphase?
A: 90%.
42
Q: What are the three stages of interphase?
Growth: Cell expands. DNA replication: DNA is copied. Preparation: Cell prepares for division.
43
Q: What is mitosis?
A: Process of cell division into two identical cells.
44
Q: List the phases of mitosis.
A: Prophase, Metaphase, Anaphase, Telophase.
45
Q**:** Explain what happens during prophase.
****A: Chromosomes condense, spindle fibers appear, and nuclear membrane dissolves.
46
Q: Explain metaphase.
A: Chromosomes align at the cell's center.
47
Q: Explain anaphase.
A: Chromatids are pulled to opposite poles.
48
Q: Explain telophase.
A: Nuclear membrane reforms, spindles disappear.
49
Q: What occurs during cytokinesis?
A: Division of the cytoplasm, creating two identical cells.
50
Q: Why do cells divide?
A: For growth, repair, and development.
51
Q: If a cell has 20 chromosomes, how many will its daughter cells have after mitosis?
A: 20.
52
Q: What is cancer?
A: Uncontrolled cell division due to mutations.
53
Q: List cancer treatments.
A: Chemotherapy, surgery, radiation therapy.