#Question id: 12705
#Unit 8. Inheritance Biology
#Question id: 11580
#Unit 7. System Physiology – Animal
Melatonin is secreted by the ________.
#Question id: 56
#Unit 1. Molecules and their Interaction Relevant to Biology
Trace elements are those required by an organism in only minute quantities. Which of the following is a trace element that is required by humans and other vertebrates, but not by other organisms such as bacteria or plants?
#Question id: 324
#Unit 1. Molecules and their Interaction Relevant to Biology
Why are hydrocarbons insoluble in water?
#Question id: 3529
#Unit 8. Inheritance Biology
Mendel crossed tall and round seeded pea plants with dwarf and wrinkle seeded pea. The F1 plants were all tall and round seed. What is the probability of tall plant with wrinkle seed in F2 generation?