1. During the preparation of scrambled eggs, the heat-induced denaturation of ovalbumin results in a loss of its native biological conformation. Which of the following levels of protein organization remains fundamentally intact throughout this process?
(A) Primary structure
(B) Secondary structure
(C) Tertiary structure
(D) Quaternary structure
(E) All levels are equally disrupted by thermal agitation.

2. Living organisms increase in complexity as they grow, resulting in a decrease in the entropy of an organism. How does this relate to the second law of thermodynamics? (A) Living organisms do not obey the second law of thermodynamics, which states that the entropy of an organism increases with each energy transformation. (B) As a consequence of the processes required for growth, the decrease in entropy of the organism is associated with a corresponding increase in the entropy of the universe. (C) As a consequence of the processes required for growth, the decrease in entropy of the organism is associated with a corresponding decrease in the entropy of the universe. (D) Living organisms can transform chemical energy into entropy. (E) None of the above.

3. To analyze the dynamic spatio-temporal movements of condensed chromosomes during mitotic anaphase in a living eukaryotic cell, which of the following imaging modalities is most appropriate? (A) Bright-field microscopy of unstained, fixed cells (B) Standard light microscopy using live-cell imaging (e.g., phase-contrast or DIC) (C) Scanning electron microscopy (SEM) of gold-sputtered samples (D) High-resolution transmission electron microscopy (TEM) (E) Atomic force microscopy (AFM) conducted under vacuum conditions

4. Testosterone is a lipophilic steroid hormone that diffuses freely across the plasma membrane of all cells via passive diffusion. Despite this ubiquitous entry, only specific "target cells" exhibit a physiological response. Which statement best explains this specificity? (A) All cells possess the gene for the testosterone receptor, but only target cells have undergone the epigenetic modifications necessary to express the receptor protein. (B) Targeted response is determined by the presence of cell-surface protein channels that actively pump testosterone into the cytoplasm against its concentration gradient. (C) Only target cells possess the membrane-bound G-protein coupled receptors (GPCRs) required to activate the adenylyl cyclase signaling pathway. (D) The high concentration of cytoplasmic proteases in non-target cells degrades testosterone before it can reach the nuclear envelope. (E) Only target cells contain the specific intracellular receptor proteins that, upon ligand binding, translocate to the nucleus to act as transcription factors.

5. Which of the following would be the most effective "poison" for the process of glycolysis specifically? (A) A chemical that removes all oxygen from the cell. (B) A chemical that destroys pyruvate after it has already been made. (C) A "fake" sugar molecule that looks like glucose but cannot be broken down. (D) A chemical that turns all NADH back into NAD⁺. (E) A chemical that stops the mitochondria from using oxygen to make ATP.

6. Which of the following best describes the timing of the Calvin cycle (carbon fixation) and cellular respiration in a living plant? (A) Both processes are strictly dependent on direct sunlight and stop at night. (B) The Calvin cycle runs during the day, while respiration is reserved for the night. (C) The Calvin cycle requires the "light-dependent" products of the day, while respiration occurs continuously regardless of light. (D) The Calvin cycle only happens in the dark to conserve water, while respiration only occurs in the light. (E) Respiration occurs only in the roots, while the Calvin cycle occurs only in the leaves.

7. In the life cycle of sexually reproducing eukaryotes, the process of meiosis reduces the chromosomal complement to a haploid state (n). Which event is mechanistically responsible for the restoration of the diploid state (2n) in the subsequent generation? (A) S-phase DNA replication, which doubles the genetic material within a single cell. (B) The random alignment of bivalents along the metaphase plate during Meiosis I. (C) The physical exchange of genetic material between non-sister chromatids during Prophase I. (D) The syngamy of paternal and maternal gametes to form a totipotent zygote. (E) The degradation of polar bodies following the completion of Meiosis II in oogenesis.

8. During DNA replication, the enzyme primase synthesizes a short RNA fragment to provide a 3'-OH group for DNA Polymerase III. Consider the following DNA template sequence at the replication fork: 3'-CCTAGGCTGCAATCC-5' If an RNA primer begins synthesis using the underlined Cytosine as the first template base and proceeds toward the 5' end of the template, which of the following is the correct primer sequence? (A) 5'-GACGTTAGG-3' (B) 3'-GACGUUAGG-5' (C) 5'-GACGUUAGG-3' (D) 5-CCUAGGCUG-3' (E) The primer cannot be synthesized in this direction because RNA polymerase only reads from 5'→3'.

9. A bacterium uses a "repressor" protein to turn a specific gene OFF when it has enough of a particular nutrient. If a mutation destroys the gene that makes this repressor protein, what will happen? (A) The gene will stay OFF forever because there is nothing to turn it on. (B) The gene will stay ON constantly because the "off-switch" protein is missing. (C) The repressor will get stuck to the DNA and never let go. (D) The mRNA will change its shape and keep making proteins forever. (E) The bacterium will stop growing until it can fix its DNA.

10. A researcher synthetically produces a eukaryotic mRNA transcript but omits the 7-methylguanosine (5' cap) and the 3' poly-A tail. If this modified RNA is microinjected into the cytoplasm of a mammalian cell, what is the most probable metabolic fate of the molecule? (A) The mRNA will be sequestered into the nucleolus for post-transcriptional processing. (B) The transcript will be recognized by the eIF4F complex and translated at a basal rate. (C) The mRNA will undergo rapid exonucleolytic cleavage by cellular ribonucleases. (D) The cell will recognize the lack of a tail and initiate "non-stop decay" after the first round of translation. (E) The mRNA will be reverse-transcribed by cellular DNA polymerases to be stored as cDNA in the genome.

11. If a radical nondisjunction event occurs during gametogenesis, resulting in the duplication of the entire chromosomal complement rather than individual loci, what is the most likely genomic outcome for the resulting offspring? (A) Formation of a pseudogene due to the loss of selective pressure on the redundant copy. (B) Development of a gene cluster via unequal crossing over on a single chromosome. (C) Establishment of autopolyploidy, increasing the total number of sets of chromosomes in the organism. (D) Reversion to a diploid state through the immediate loss of all extra chromosomal material. (E) The creation of a haploid individual due to the mechanical failure of the spindle fibers.

115年 - [無官方正解]115 國立清華大學_碩士班考試入試題_生命科學暨醫學院_甲組（生物與醫學科學組）：生物學#142704

114年 - [無官方正解]114 國立清華大學_碩士班考試入試題_生命科學暨醫學院_甲組（生物與醫學科學組）：生物學#133416

114年 - 114 嘉南藥理大學＿科技校院日間部四年制申請入學招生試題_藥學系：生物#129837

113年 - 113 國立臺灣大學_碩士班招生考試：生物學#125305

113年 - 113 嘉南藥理大學_科技校院日間部四年制申請入學招生試題_藥學系：生物#121555

112年 - 112 國立清華大學_碩士班考試入試題_生命科學暨醫學院_丁組（醫學生物科技學程）：生物學#118495

111年 - 111 國立臺灣大學_碩士班招生考試試題:普通生物學(A)#113102

111年 - 111 國立清華大學碩士班考試入學試題_生命科學院/甲、丁組(生物與醫學科學組):生物學#113016

110年 - 110 國立清華大學碩士班考試入學試題_生命科學院/甲組(生物與醫學科學組):生物學#104966

110年 - 110 國立臺灣大學_碩士班招生考系所_海洋研究所生物漁業組:生物學#101253