17. Which cytoskeleton filament supports slender protrusions of plasma membrane called microvilli or filopodia?
(A) Myosin
(B) Intermediate filament
(C) Actin
(D) Microtubule
(E) Dynamin

複選題18. Which of the following statements regarding molecular biology techniques are CORRECT? (A) Southern blotting for detection of specific RNA sequences (B) Northern blotting for detection of specific DNA sequences (C) Western blotting for detection of protein expression levels (D) PCR for amplification of specific DNA sequences (E) Chromatin immunoprecipitation for detection of specific proteins that are associated with specific genomic regions

複選題19. Which of the following statement regarding the "Cell Cycle" is CORRECT? (A) DNA is replicated in S phase. (B) The G₁ phase is the interval between mitosis and the onset of DNA replication. (C) These nondividing cells (which may physiologically be extremely active) are in the G2 phase. (D) The G0 phase is the interval between the termination of DNA replication and the onset of mitosis. (E) During M phase, chromosomes and cytoplasm are partitioned into two daughter cells.

20. Which of the following mobile DNAs moves by using an intermediate RNA form? (A) LINES (Long Interspersed Nuclear Elements) (B) Endogenous retrovirus (C) Transposon (D) Retrotransposon (E) LTR retroelements

複選題21. Which of the following is/are a component of a ribonucleotide? (A) Deoxyribose (B) Phosphate group (C) Uracil (D) Adenine (E) Thymine

複選題22. Which of the following modifications found on amino acids is/are also used to modify nucleic acids? (A) Phosphorylation (B) Glycosylation (C) Methylation (D) Fatty acid modification (E)Hydroxylation

複選題23. Which of the following statements is/are known to be part of signal transduction cascade? (A) phosphorylation of fibronectin (B) dissociation of the components of a heterotrimeric G-protein (C) enzymatic breakdown of phosphatidyl inositol bisphosphate (PIP2) (D) elevation of intracellular [Ca2+] (E)activation of cGMP phosphodiesterase

複選題24. Which of the following is/are characteristic of a eukaryotic enhancer element? (A) It may be found as far as 1 to 2 kilobase from the promoter. (B) Its activity is dependent on its distance from the start site of transcription. (C) It may be positioned at the 5' end or the 3' end of the gene. (D) Its activity is dependent of its orientation. (E)It increases the level of transcription of genes under its control.

複選題25. Which of the following is/are NOT a feature of miRNAs? (A) The enzyme that catalyzes the initial processing of miRNAs in the nucleus is Dicer. (B) Primary miRNA transcripts have internal complementary sequences capable of forming hairpin structures. (C) Precursor miRNAs have internal complementary sequences capable of forming hairpin structures. (D) miRNAs are exported to nuclease in their single-stranded form. (E)Precursor miRNAs are approximately 60-70 nucleotides long.

複選題26. Which of the following amino acids is/are a target for phosphorylation by a protein kinase? (A) Ala (B) Tyr (C) Arg (D) Thr (E)Asp

複選題27. Which of the following statements about eukaryotic translation is/are FALSE? (A) All polypeptides synthesized by cytosolic ribosomes begin with a Met residue, not an fMet. (B) A special initiator tRNA is utilized for initiation by cytosolic ribomes. (C) Polypeptides synthesized by mitochondrial ribosomes begin with fMet. (D) The 40S ribosomal subunit binds the mRNA before any initiation factors. (E)The eIF2a factor binds to the eukaryotic internal ribosome entry site (IRES).

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