HESI A2 BIOLOGY QUESTIONS AND ANSWERS

HESI A2 BIOLOGY QUESTIONS AND ANSWERS In the hierarchic system of classification which is the least inclusive? Species After observing an event, you develop an explanation this is: Hypothesis A molecule of water is bonded with another molecule of water by what type of bond? Hydrogen Which is a benefit of the intermolecular hydrogen bonding of water: 1- Water has a relatively high specific heat value. 2- Water has strong cohesive and adhesive properties. 3- Polarity of water allows it to act as a versatile solvent. Of all molecules that are significant to biology which are considered important: nucleic acids Lipids are better known as fats but what are they specifically? Fatty acids, phospholipids, steroids What are the 2 categories of fatty acids? saturated fats and unsaturated fats How do phospholipids function in cells? They are integral components of plasma membrane Which of the biologic molecules are considered the most significant contributor to cellular function? Proteins Proteins are polymers of which? Amino Acids Which of the following proteins catalyze different reactions or processes? Enzyme Which of the biologic molecules are components of the molecules of inheritance? Nucleic Acids What is the sum of all chemical reactions that occur in an organism? Metabolism In a cell, reactions take place in a series of steps called: