1) What is two types of hormones? a) Amino acid based (water soluble) and Steroids (lipid soluble) b) Red Blood Cell Hormones and Plant Hormones." 2) Which gland is often referred to as the "master gland" because it controls the functions of other endocrine glands? a) adrenal gland b) Pituitary gland c) Thyroid gland d) Pancreas 3) How do steroid hormones primarily exert their effects within target cells? a) Diffusing directly through the plasma membrane b) By activating ion channels on the cell surface c) By binding to cell surface receptors d) Through direct interaction with cytoplasmic proteins 4) How do amino acid-based hormones primarily initiate cellular responses within target cells? a) Activation of protein kinases via a second-messenger system b) By directly entering the nucleus c) Through binding to DNA d) Diffusing through the plasma membrane 5) How does hormonal stimulus primarily influence cellular processes within target cells? a) By inhibiting plasma membrane synthesis b) Through alterations in plasma membrane permeability or potential c) By changing the cell's shape d) By reducing enzyme activity

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