Answer the following question given this paragraph: Most protist diseases in humans are caused by protozoa. Protozoa make humans sick when they become human parasites. Q: What are most protist diseases in humans caused by? Choices: - eukaryots - lice - ticks - protozoa A:
protozoa

Answer the following question given this paragraph: Sex hormones are chemical messengers that control sexual development and reproduction. The male reproductive system consists of structures that produce male gametes called sperm and secrete the male sex hormone testosterone. Q: What are chemical messengers that control sexual development and reproduction? Choices: - lipids - proteins - neurotransmitters - sex hormones A:
sex hormones

Answer the following question given this paragraph: Endocrine system: A high concentration of sugar in the blood triggers secretion of insulin by an endocrine gland called the pancreas. Insulin is a hormone that helps cells absorb sugar from the blood. Q: Which hormone helps cells absorb sugar from the blood? Choices: - estrogen - cortisol - adrenaline - insulin A:
insulin