By McGraw-Hill Education
A finished, inquiry-based method of biology BSCS Biology: A Molecular procedure (Blue model) demanding situations talented and honor scholars to imagine scientifically, to combine ideas, to investigate info, and to discover advanced concerns. This research-based application, constructed with investment from the nationwide technology starting place, helps an inquiry method of biology. It presents scholars with the historical past info had to ask their very own examine questions and to behavior their very own investigations. Over 60 in-text labs create confident possibilities for college kids to have interaction in inquiry studying.
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Extra info for BSCS Biology: A Molecular Approach, Student Edition
Oxygen is a gas needed by most life forms. People with breathing problems are often given concentrated oxygen to breathe (b). Both elements behave very differently from water. 24 UNIT 1 Energy, Matter, and Organization (bl)Hulton-Deutsch Collection/CORBIS, (br)Larry Mulvehill/Photo Researchers that indicated every element is made of minute particles. Dalton believed these particles could not be broken into smaller particles, so he named them atoms. Atoms are the smallest unit of an element that still has the chemical properties of that element.
In contrast, the electrons in a molecule of hydrogen gas are shared equally, and the resulting covalent bond is said to be nonpolar. 9). Such a molecule is known as a polar molecule. The polar nature of water is biologically significant. Most cells and tissues UNIT 1 Energy, Matter, and Organization contain large amounts of water—up to 95% in some, with an average of 70–80% water throughout all organisms. Molecules must dissolve in water in order to move easily in and between living cells. Polar molecules, such as sugar, and ions, such as Na+, dissolve in water because of the electric attraction between them and the water molecules.
Check and Challenge 1. 2. 3. 4. 5. How are chemical reactions important in cells? Distinguish among the various types of chemical bonds. Describe the law of conservation of matter. Why is pH important to living organisms? How does the polarity of water assist the movement of molecules? Try Investigation 1A and pH. Organisms Try Investigation 1B of Living Things. 6 Organic Compounds and Life Many chemical compounds besides water are needed for life to exist. The most important are organic compounds, in which carbon atoms are combined with hydrogen and usually oxygen.
BSCS Biology: A Molecular Approach, Student Edition by McGraw-Hill Education