(Question)
Q: In amniotes that lay eggs, the shell of the egg provides protection for the developing embryo while being permeable enough to allow for the exchange of carbon dioxide and this? Choices: - gas - tissue - Protein - oxygen A:
(Answer)
oxygen

(Question)
Q: What is the name of the protein that is found in hairs and nails? Choices: - cellulose - chromatin - Skin - keratin A:
(Answer)
keratin

(Question)
Q: Chloroplasts, chromoplasts, and leucoplasts are all plastids, organelles found in what kind of cells? Choices: - animal cells - lung cells - heart cells - plant cells A:
(Answer)
plant cells