2. What causes a differentiating B cell to become committed to producing only one species of antibody molecule?
(A) DNA rearrangements in the genome
(B) RNA rearrangements in the genome
(C) protein rearrangements in the genome
(D) DNA rearrangements in the mitochondria
(E) RNA rearrangements in the mitochondria

複選題38.憲法有關國民經濟之規定，下列敘述何者正確？ (A)國家對於私人財富及私營事業，認為有妨害國計民生之平衡發展者，應以法律限制之 (B)公用事業及其他有獨佔性之企業，以私營為原則 (C)合作事業應受國家之獎勵與扶助 (D)國民生產事業及對外貿易，應受國家之獎勵、指導及保護 (E)國民經濟應以民主主義為基本原則，實施平均地權，節制資本

複選題39.有關憲法之施行及修改，下列敘述何者正確？ (A)我國憲法規定事項，有另定實施程序之必要者，以規則定之 (B)命令與憲法或法律牴觸者，得撤銷 (C)法律與憲法牴觸者，無效 (D)憲法之解釋，由司法院為之 (E)法律與憲法有無牴觸發生疑義時，由司法院解釋之

複選題40.考試院為國家最高考試機關，掌理事項包括下列何者？ (A)公務人員之銓敘、保障 (B)公務人員任免、考績之法制事項 (C)公務人員之撫卹、退休 (D)公務人員陞遷 (E)公務人員級俸

1. ______are membrane protrusions that facilitate the absorption of nutrients. What is the name of these protrusions and what cytoskeletal element forms their internal skeleton? (A) Microvilli, microtubules (B) Microvilli, actin filaments (C) Microvilli, intermediate filaments (D) Villi, microtubules (E) Villi, actin filaments

3. Which of the following about neuron is incorrect? (A) It is a polarized cell. (B) Peripheral nervous system includes autonomic and somatic nervous systems. (C) The generation of action potential is related to the electrochemical gradient across the plasma membrane. (D) Myelin sheath is a protein-rich substance that surrounds the axon of some neurons, forming an electrically insulating layer. (E) Neurofilaments are intermediate filaments found in neurons.

4. In the life cycle of an angiosperm, which of the following cells or tissues are diploids? (A) generative cells (B) microsporocyte (C) antipodal cells (D) tube cells (E) polar nuclei of the embryo sac

5. The black dots that cover strawberries are actually individual fruits from a flower with multiple carpels. The fleshy and tasty portion of a strawberry derives from the receptacle of the flower. Therefore, a strawberry is ________. (A) both an aggregate fruit and an accessory fruit (B) both a multiple fruit and an accessory fruit (C) both a multiple fruit and an aggregate fruit (D) both a simple fruit and an aggregate fruit (E) both a simple fruit and an accessory fruit

6. During splicing, which major molecular component of the spliceosome catalyzes the excision reaction? (A) protein (B) DNA (C) RNA (D) lipid (E) sugar

7. Which of the following statements regarding the body plans of animal is correct? (A) Cnidarian are bilateral symmetry. (B) Nematodes are acoelomate. (C) Platyhelminthes are radial symmetry. (D) Annelids are psudocoelomate. (E) Chordates are deuterostomia.

8. In a phylogenetic tree, a group is composed of some species but not their most recent common ancestor. This is an example of ________. (A) monophyletic group (B) paraphyletic group (C) polyphyletic group (D) polytomy (E) dicotomy