Biology Homework Solutions

REproduction

A. nutrition B. infections C. prescription drug D. alcohol E. cocaine f. cigarette smoke G. anti-acne drugs H. all of the preceding threats 1. About 60-70 percent of newborns of these women have FAS. 2. In the case of rubella, there is a 50 percent chance of some organs won't form properly. 3. In cases of exposure to ...continues

REproduction

10. Can severely damage the brain and spinal cord in ways leading to general paralysis A. AIDS B. Chlamydial infection C. Genital herpes D. Gonorrhea E. Pelvic inflammatory disease F. Syphilis 11. Has no cure. A. AIDS B. Chlamydial infection C. Genital herpes D. Gonorrhea E. Pelvic inflammatory disease F. ...continues

REproduction

Which of the following statements is NOT true of STDs? a. STDs are extremely widespread. b. STDs are easy to track. c. Billions of dollars are spent every year battling STDs. d. Most people are unaware of the risks and consequences of STDs. Of the 15 million new cases of STDs in the US every year, what percentage of these ...continues

Endocrine

Matching: Match the following hormones to the correct descriptions. a. steroid hormones b. peptide hormones 1. ___ lipid-soluble molecules derived from cholesterol; can diffuse directly across the lipid bilayer of a target cell's plasma membrane. 2. ___ various peptides, polypeptides, and ...continues

Endocrine

Matching: Match the following conditions to their correct characteristics. 1. ___ pituitary dwarfism A. affected adults are proportionally similar to average-size people but larger. 2. ___ gigantism B. affected adults are proportionally similar to average-size people but much smaller. 3. ___ diabetes insipidus C. excessive ...continues

Endocrine

Every time you take a breath, you are (1) _____ the respiratory surfaces of your lungs. Each lung has approximately 300 million tiny thin-walled outpouching air sacs called (2) ____. Inhaled air dead-ends in these (2), each of which is surrounded by a network of pulmonary (3) _______ into which oxygen from air diffuses and is ...continues

Urinary System

The body gains water by absorbing water form the slurry in the lumen of the small intestine and from (1) ______ during condensation reactions. The mammalian body loses water mostly by excretion of (2) ____, evaporation through the skin and (3) ____, elimination of feces from the gut, and (4) _____ as the body is cooled. (5) __ ...continues

Nervous System

Nerve cells that conduct messages are called (1) ____. (2) _____ cells, which support and nurture the activities of neurons, make up less than half the volume of the nervous system. (3) _______ neurons respond to specific kinds of environmental stimuli, (4) ______ connect different neurons in the spinal cord and brain, and (5) ...continues

Nervous System

The junction specialized for the transmission between a neuron and another cell is called a (1) _____ ______. Usually, the signal being sent to the receiving cell is carried by chemical messengers called (2) _____. (3) _____ is an example of this type of chemical messenger, which diffuses across the synaptic cleft, combines with ...continues

Cardiac

1. What digestive enzyme is secreted by the salivary glands and begins the breakdown of polysaccharides? a. protease b. amylase c. lipase d. bile 2. Would a 170 pound person who is 5ft 8inches, be at a high risk for obesity related health problems? a. yes b. no 3. How many calories would a 37-year old, who is m ...continues

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