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