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BIOS
BIOS 251 FINAL EXAM QUESTIONS WITH
CORRECT VERIFIED SOLUTIONS 100%
GUARANTEED PASS (LATEST UPDATE)
1. G1 phase of cell cycle - ANS ✓organelles and cytosolic components
copied, centrosome replication begins
2. S phase of cell cycle - ANS ✓DNA replicated
3. G2 phase of cell cycle - ANS ✓cell growth continues, enzymes and other
proteins synthesized, centrosome replication completed
4. Cell cycle stages - ANS ✓G1, S, G2, mitosis
5. Prophase - ANS ✓chromatin condenses into chromosomes
6. Metaphase - ANS ✓centromeres of chromosomes line up at metaphase
plate
7. Anaphase - ANS ✓centromeres of chromosomes split and sister
chromatids move toward opposite poles of cell
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8. Telophase - ANS ✓mitotic spindle dissolves, chromosomes regain their
chromatin appearance, and a new nuclear membrane forms
9. Stratum basale /stratum germinativum - ANS ✓-deepest layer of
epidermis
-mitotically active -> constantly dividing, attached to basal lamina (basement
membrane)
10. Stratum spinosum - ANS ✓-spiny layer of epidermis
-cells arranged in 8 to 10 layers with desmosomes that pull cells into spiny
shapes
11. Stratum granulosum - ANS ✓-granular layer of epidermis
-cells arranged in two to four layers and filled with keratohyalin granules for
dehydration and cross linking of keratin
12. Stratum lucidum - ANS ✓-clear layer of epidermis
-cells filled with keratin, absent in thin skin
13. Stratum corneum - ANS ✓-horny layer
-most superficial layer; dead cells filled with keratin
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14. Layers of epidermis from most superficial to deepest - ANS
✓Stratum corneum, stratum lucidum, stratum granulosum, stratum
spinosum, stratum basale/germinativum
15. Cells of the epidermis - ANS ✓keratinocytes, melanocytes,
intraepidermal (dendriditc/langerhans), tactile (merkel)
16. Keratinocytes - ANS ✓epidermal cells that produce keratin - a
tough fibrous protein that provides protection.
17. Melanocytes - ANS ✓-epidermal cells that produce the pigment
melanin
-solar shield to absorb UV rays from damaging keratinocytes
18. Intraepidermal (dendritic/langerhans) macrophages - ANS
✓epidermal cells involved in the immune responses
19. Tactile (Merkel) epithelial cells - ANS ✓epidermal cells that
function in the sensation of touch
20. Thick skin - ANS ✓-hairless skin
-covers palms, palmar surfaces of digits, and soles
BIOS 251
BIOS
BIOS 251 FINAL EXAM QUESTIONS WITH
CORRECT VERIFIED SOLUTIONS 100%
GUARANTEED PASS (LATEST UPDATE)
1. G1 phase of cell cycle - ANS ✓organelles and cytosolic components
copied, centrosome replication begins
2. S phase of cell cycle - ANS ✓DNA replicated
3. G2 phase of cell cycle - ANS ✓cell growth continues, enzymes and other
proteins synthesized, centrosome replication completed
4. Cell cycle stages - ANS ✓G1, S, G2, mitosis
5. Prophase - ANS ✓chromatin condenses into chromosomes
6. Metaphase - ANS ✓centromeres of chromosomes line up at metaphase
plate
7. Anaphase - ANS ✓centromeres of chromosomes split and sister
chromatids move toward opposite poles of cell
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BIOS
8. Telophase - ANS ✓mitotic spindle dissolves, chromosomes regain their
chromatin appearance, and a new nuclear membrane forms
9. Stratum basale /stratum germinativum - ANS ✓-deepest layer of
epidermis
-mitotically active -> constantly dividing, attached to basal lamina (basement
membrane)
10. Stratum spinosum - ANS ✓-spiny layer of epidermis
-cells arranged in 8 to 10 layers with desmosomes that pull cells into spiny
shapes
11. Stratum granulosum - ANS ✓-granular layer of epidermis
-cells arranged in two to four layers and filled with keratohyalin granules for
dehydration and cross linking of keratin
12. Stratum lucidum - ANS ✓-clear layer of epidermis
-cells filled with keratin, absent in thin skin
13. Stratum corneum - ANS ✓-horny layer
-most superficial layer; dead cells filled with keratin
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14. Layers of epidermis from most superficial to deepest - ANS
✓Stratum corneum, stratum lucidum, stratum granulosum, stratum
spinosum, stratum basale/germinativum
15. Cells of the epidermis - ANS ✓keratinocytes, melanocytes,
intraepidermal (dendriditc/langerhans), tactile (merkel)
16. Keratinocytes - ANS ✓epidermal cells that produce keratin - a
tough fibrous protein that provides protection.
17. Melanocytes - ANS ✓-epidermal cells that produce the pigment
melanin
-solar shield to absorb UV rays from damaging keratinocytes
18. Intraepidermal (dendritic/langerhans) macrophages - ANS
✓epidermal cells involved in the immune responses
19. Tactile (Merkel) epithelial cells - ANS ✓epidermal cells that
function in the sensation of touch
20. Thick skin - ANS ✓-hairless skin
-covers palms, palmar surfaces of digits, and soles
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