Question
This word names a layer of the epidermis that is present in the thick skin of palms and soles. For 10 points each:
[10h] Give this word that names a thin layer of the epidermis that can appear below the stratum corneum. This is the second word in the name of an iridescent layer of the eye that improves night vision in nocturnal animals.
ANSWER: lucidum (The structures are the stratum lucidum and the tapetum lucidum.)
[10m] The epidermis is primarily composed of cells named for this protein, which can differentiate into corneocytes. The intermediate filaments formed by this protein are rich in disulfide bridges.
ANSWER: keratin [or alpha-keratin]
[10e] Keratinocytes of the epidermis receive this polymer from the stratum basale. This pigment drives the coloration of human skin.
ANSWER: melanin
<Science - Biology>
Data
Summary
| Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|---|
| 2025 PACE NSC | 06/07/2025 | Y | 42 | 16.43 | 100% | 43% | 21% |