TEAS Science Questions and Correct Answers Rated A+

A _____ reaction results in a loss of water when two molecules are joined together - condensation A _____ reaction is the opposite of a condensation reaction. During ____, what is added - hydrolysis water is added. -H is added to one of the smaller molecules and OH is added to another molecule being formed Amino acids are formed by the partial ____ of ____, which forms... - partial hydrolysis of protein which forms an amide bond Hydrolysis is a reaction in which water is broken down into - hydrogen cations (H or H+) and hydroxide anions (OH or OH-) Oligonucleotides are broken down into smaller sugar nitrogenous units called Why can nucleosides be digested by cells? - nucleosides because the sugar is divided from the nitrogenous base Lipids are molecules that are soluble in ____ solvents, but are - nonpolar, but are hydrophobic Macromolecular nucleic acid polymers, such as RNA and DNA, are formed from _____, which are monomeric units joined by - formed from nucleotides monomeric units joined by phosphodiester bonds _________ is used to synthesize nucleotides for DNA and amino acids for proteins _________ uses the enzyme ____ in the reduction of - Nitrogen fixation (x2) uses the enzyme nitrogenase in the reduction of dinitrogen gas (N2) to ammonia (NH3) ATP is an ____ nucleotide - RNA What are Mendel's laws? - Law of segregation - states that there are two alleles and that half of the total number of alleles are contributed by each parental organism Law of independent assortment - traits are passed randomly and are not influenced by other traits What is a Punnett square used for? - It shows how alleles combine from the contributing genes to form various phenotypes When two different alleles are present in a pair, the dominant one is expressed Select a property of alkali metals such as lithium (Li), sodium (Na), and potassium (K) A. they are commonly used in fireworks B. They are harder than other metals C. They are extremely reactive and do not occur in a free form in nature. D. They are poor conductors of electricity - C. They are extremely reactive and do not occur in a free form in nature. The purpose of the renal system is to support homeostasis through regulation of... - Through regulation of water balance and removal of harmful matter from the blood How many spinal nerves does the human body have? - 31 PAIRS 62 total Epithelial tissue A. is avascular B. is composed of loosely packed, compressed cells C. forms between the basement membrane and connective tissue D. lines external organs - A. is avascular What type of bone replaces cartilage on the outside of bone? A. articular B. Compact. C. epiphyseal D. Ossification - B. compact Functions of the large intestine include all of the following EXCEPT: A. absorption B. bacterial digestion C. peristalsis D. storage - D. storage All of the following are commonly accepted functions of the cardiovascular system EXCEPT A. protect B. regulate C. Storage D. transport - C. Storage The diaphragm A. aids in respiration B. Compresses the abdomen during respiration C. elevates the ribs during respiration D. stimulates respiration - A. aids in respiration Which of the following is a monosaccharide? A. Fructose B. Glycogen C. Sucrose D. Starch - A. Fructose Which of the following would be the best device to aid in determining the heart rate for one minute from an ECG? A. Calipers B. Chronograph C. Measuring tape D. Ratometer - A. Calipers A person with elevated eosinophilic leukocytosis is commonly suffering from A. bacterial/viral infection B. chronic infection C. leukemia D. seasonal allergies - D. seasonal allergies Which of the following receptors, located in the walls of the bronchi/bronchioles, are activated when the lungs expand to their physical limit? A. Apneustic B. Inspiratory C. Pneumonic D. Stretch - D. stretch The duodenum neutralizes acidic... - chyme What are the three stomach secretions? - pepsinogen HCl Mucus Parts of the small intestine - duodenum, jejunum, ileum What is the purpose of the villi and microvilli in the small intestine? - to absorb nutrients What does the common hepatic duct do? - takes bile made in the liver to the gallbladder for storage common bile duct carries bile to duodenum What is the vermiform appendix - outpouching of cecum