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19 Cards in this Set
- Front
- Back
True or false: the “master” plant hormones that influence structure, development & behavior in various ways are most accurately referred to as gibberellins.
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FALSE; real answer is auxins
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Molecules that directly influence cellular responses are most accurately referred to as ___ while ___ transmit signals from activated sensors.
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effectors & messengers
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Marine fishes avoid water balance problems by ______.
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PRODUCING SMALL VOLUMES OF CONCENTRATED URINE.
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Steroids are derived from:
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cholesterol and bind intracellular receptors.
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Which one of the following statements about phototropism is incorrect? Phototropism:
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IS A RESPONSE TO A PATHOGEN.
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The material that passes through the filter and enters the excretory organ for either further processing or secretion is called: .
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FILTRATE
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True or False: Signal transduction in plants begins when an effector causes a cellular response (e.g. switching off a particular gene):
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FALSE; that’s when it ends.
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Which one of the following is not a hormone secreted by the anterior pituitary gland:
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OXYTOCIN.
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Water that is generated as a by-product of cellular respiration (i.e. ATP production) is known as:
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METABOLIC WATER.
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True or False: Steroid hormones are packaged and stored in vesicles until the cell is stimulated to release them.
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FALSE; Protein & Peptide hormones are.
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Which of these endocrine glands secretes hormones that are especially important to metabolism and energy balance:
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THYROID.
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Which of the following responses is not part of the plant hypersensitive response to attack by a pathogen:
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CAUSE NEIGHBORING PLANTS TO PRODUCE DEFENSIVE COMPOUNDS.
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Which one of the following is a red light receptor molecule: .
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PHYTOCHROME
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Salts dissolved in water known as electrolytes can cross from one side of a biological membrane to the other via:
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ACTIVE TRANSPORT & PASSIVE TRANSPORT.
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Which one of the following hormones is produced by the pancreas:
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GLUCAGON & INSULIN.
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A plant’s ability to measure and respond to light amounts and day length is most accurately referred to as:
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PHOTOPERIODISM.
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Birds, insects and most reptiles primarily excrete which nitrogenous waste:
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URIC ACID
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True or False: The endocrine system is composed of a small number of physically connected tissues and organs:
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FALSE.
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Which of the following is not part of the urinary system of mammals:
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LIVER
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