Practice Practical 2 Flashcards

Lab 8

Photosynthesis

• Question 1: What are the chemical products of photosynthesis?

• Answer: Oxygen gas $(O<em>2)$ and Glucose $(C</em>6H<em>{12}O</em>6)$

• Question 2: Does this tube represent an actively photosynthesizing plant?

• Answer: No, an actively photosynthesizing plant would be in a purple-colored indicator.

• Question 3: When is $CO_2$ used in photosynthesis?

• Answer: $CO_2$ is used in the light-independent reactions, also known as the Calvin Cycle.

Lab 9

Aerobic Cellular Respiration

• Question 1: What are the chemical reactants in aerobic cellular respiration?

• Answer: Oxygen gas $(O<em>2)$ and Glucose $(C</em>6H<em>{12}O</em>6)$

• Question 2: What gas is trapped in the fermentation tube?

• Answer: Carbon dioxide $(CO_2)$ gas is produced in alcoholic fermentation.

• Question 3: Which of the steps in cellular respiration make ATP? (Choose more than one: Glycolysis, Prep Reaction, Krebs Cycle, ETC)

• Answer: Glycolysis, Krebs Cycle, and the ETC (Electron Transport Chain).

Lab 10

Mitosis

• Question 1: What stage of mitosis do these pictures represent?

• Answer: Prophase

• Question 2: What part of cell division overlaps telophase?

• Answer: Cytokinesis

• Question 3: How can DNA be copied?

  • a. Electrophoresis

  • b. PCR

  • c. Transformation

• Answer: b. PCR (Polymerase Chain Reaction)

Lab 11

Genetics and Meiosis

• Question 1: Which is the genotype for homozygous dominant thumb crossing? TT, Tt, tt

• Answer: TT

• Question 2: If you are Bb, will you show the dominant phenotype, recessive phenotype, or both?

• Answer: Dominant phenotype

• Question 3: If a cell with 26 chromosomes undergoes Meiosis, there will be daughter cells produced with chromosomes in each cell.

• Answer: 4 daughter cells produced with 13 chromosomes in each cell.

• Question 4: When do sister chromatids separate? Anaphase (Mitosis), Anaphase I, Anaphase II

• Answer: Anaphase (Mitosis), Anaphase II

Lab 12

Blood Types and Pedigrees

• Question 1: What blood type is this? Write phenotype (blood type) and genotype.

• Answer: Blood type AB-, so only possible genotype is $I^AI^Brr$

• Question 2: $X^AX^a$ = MALE or FEMALE? If A = active and a = inactive, which phenotype is expressed?

• Answer: Female, active

• Question 3: What mode of inheritance does this pedigree show?

• Answer: Autosomal Dominant (be sure you can tell why autosomal and why dominant.)

• Question 4: What is the genotype of person C, and are they affected or unaffected? Use A, a, Y, $X^a$, $X^A$

• Answer: aa

Lab 13

DNA and RNA

• Question 1: If the DNA sequence is A T G C A T C G, What is the complementary DNA strand?

• Answer: T A C G T A G C

• Question 2: If the DNA sequence is A T G C A T C G, What RNA will be transcribed from it?

• Answer: U A C G U A G C

• Question 3: On the gel above, which band represents the largest DNA fragment?

• Answer: 2 – closest to top

• Question 4: Which 2 samples came from the same person?

• Answer: Samples 1 and Sample 3 have all same bands.

Lab 14

Evolutionary Biology

• Question 1: Are the red bones marked A homologous, analogous, or vestigial?

• Answer: Homologous – both humerus – long bone in forelimb.

• Question 2: Which side of this ampicillin plate has E. coli with plasmid?

• Answer: The E. coli + plasmid plate would be resistant to ampicillin.

• Question 3: Two closely related organisms have cytochrome C proteins with MORE similar amino acids or FEWER similar amino acids?

• Answer: Two closely related organisms have cytochrome C proteins with MORE similar amino acids. (Also more similar DNA which would make more similar RNA which would result in more similar cytochrome C proteins.)