SFSU BIO 230 FINAL LATEST EXAM,SFSU BIO 230 FINAL LATEST EXAM, Exams of Biology

SFSU BIO 230 FINAL LATEST EXAM SFSU BIO 230 FINAL LATEST EXAM

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2025/2026

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which is true for recessive alleles? - ANSWERS-they produce non-
functional proteins or no proteins at all
horizontal & vertical stripes are controlled by the same genes. Vertical =
dominant (H) and horizontal = recessive (h). What is the genotype of the
parent fish with vertical stripes? - ANSWERS-Hh
Mendel's pea plants have purple flowers (dominant A) or white flowers
(recessive a). If a pea plant has white flowers its genotype is? -
ANSWERS-can only be aa
Rabbits of opposite sex- both homozygous- 1 brown & 1 white; how do
you find out the dominant color? - ANSWERS-mate them together and
see what color the offsprings are
23 chromosomes - each homologous pair is from 1 mom and 1 dad. what
are the chances you will get dads? - ANSWERS-1/4^23
During mitosis, DNA is copied once to produce 2 diploid cells; during
meiosis DNA is copied twice to produce 4 daughter cells - ANSWERS-
DISAGREE: during meiosis DNA is only copied once. Results in
diploid (2n) cell to become 4n. After meiosis there are 4 haploid cells
SFSU BIO 230 FINAL LATEST
EXAM
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END OF which is true for recessive alleles? - ANSWERS-they produce non- functional proteins or no proteins at all horizontal & vertical stripes are controlled by the same genes. Vertical = dominant (H) and horizontal = recessive (h). What is the genotype of the parent fish with vertical stripes? - ANSWERS-Hh Mendel's pea plants have purple flowers (dominant A) or white flowers (recessive a). If a pea plant has white flowers its genotype is? - ANSWERS-can only be aa Rabbits of opposite sex- both homozygous- 1 brown & 1 white; how do you find out the dominant color? - ANSWERS-mate them together and see what color the offsprings are 23 chromosomes - each homologous pair is from 1 mom and 1 dad. what are the chances you will get dads? - ANSWERS-1/4^ During mitosis, DNA is copied once to produce 2 diploid cells; during meiosis DNA is copied twice to produce 4 daughter cells - ANSWERS- DISAGREE: during meiosis DNA is only copied once. Results in diploid (2n) cell to become 4n. After meiosis there are 4 haploid cells

EXAM

END OF The vast majority of cells in your body are unable to undergo mitosis. - ANSWERS-AGREE: most cells in an adult body are specialized to no longer divide. Only stem cells are able to undergo mitosis The gene for eye color is found in your eye cells - ANSWERS- DISAGREE: the cells in your body arise from a single cell (zygote). Mitosis rises all cells in the body except gametes. Mitosis copies genetic material in cells therefore they should all be the same. All cells will have 2 copies of eye color gene where gametes only have 1. Cell membrane & ribosomes could be.. - ANSWERS-Either prokaryote or eukaryote according to endosymbiosis theory, eukaryotes; mitochondrion are though to have originated from? - ANSWERS-Free living eukaryotes that had their own ribosome Order from largest to smallest: chloroplast, virus, water molecule, glucose, & hemoglobin - ANSWERS-chloroplast, virus, hemoglobin, glucose, & water molecule

EXAM

END OF mitochondrion, water molecule, hemoglobin, glucose, virus - ANSWERS-mitochondrion, virus, hemoglobin, glucose, & water molecule where does oxygen gas that plants release during photosynthesis come from? - ANSWERS-water how do plants use O2 that they release as a waste product of photosynthesis? - ANSWERS-involves synthesis of ATP If a silk protein gene from a side is attached to a mammary gland promoter and inserted into the first cell of a goat embryo, which is correct? - ANSWERS-the silk protein will be produced in only the mammary cell in the adult goat Order from smallest to largest: nucleotide gene, exon, skin cell, and genome - ANSWERS-nucleotide, exon, gene, genome, and skin cell approximately what percentage of cancer causing mutations are newly acquired - ANSWERS-90%

EXAM

END OF If a mutagen reacts with DNA in a cell to form a single DNA, after two cell divisions, how many of their daughter cells are likely to have DNA adduct? - ANSWERS- 1 Most accurate about DNA replication and transcription/translation (central dogma)? - ANSWERS-DNA replication occurs in some cells, while transcription/translation happens in all cells If cell divine via mitosis is like a copy machine, which phase of the cell cycle carry out the "copy" and "collate" function? - ANSWERS-S & M phase a slot machine has 10 slots. Each slot has 4 fruits on the spinner (apple, pear, grape, cherry). According to law of segregation what are the odds of getting cherry? - ANSWERS-1/ sunlight energy initially stored during photosynthesis of sugar - ANSWERS-NADPH and ATP

EXAM

END OF For each glucose molecule that completes aerobic cellular respiration, how many NADH and FADH2 carry in total? - ANSWERS- 12 what produces most ATP? - ANSWERS-electron transportation chain & chemiosmosis During what cellular respiration is carbon dioxide produced? - ANSWERS-citric acid/ krebs cycle & transition reaction During glycolysis, when glucose is transformed to pyruvate, most energy of glucose is? - ANSWERS-stored in pyruvate

EXAM