an NH2 group.
C, H, and O atoms. nucleotides.a PO4 group.
Question 4 5 / 5 points 4. Taxonomy is the: Question options: study of cells. naming and classifying of organisms. study of organisms and their interaction with the environment. study of genes. Question 5 5 / 5 points 5. 66An atom with an electrical charge is a(n): Question options: isotope. molecule. ion. compound. Question 6 5 / 5 points 6. __________ is an example of an element. Question options: Water Carbon Glucose Salt Question 7 5 / 5 points 7. A fat that is hydrogenated is: Question options: more unsaturated. easier to digest. more solid. less likely to cause strokes. Question 8 5 / 5 points 8. Sometimes when I have my morning coffee, which I drink black with no sugar, I notice a thin film floating on top of the coffee. Since I have just read Chapter 3 of the text, I now realize the nature of this substance and so I run to my friend screaming, “Look at this __________ in my coffee!” Question options: hydrophilic substance hydrophobic substance glucose nucleotide Question 9 5 / 5 points 9.How many oxygen atoms are in the products of the following reaction? C6H12O6 6 H2O 6 O2 → 6 CO2 12 H2O Question options: 18 6 12 24 Question 10 5 / 5 points 10. In what way(s) is the science of biology influencing and changing our culture? Question options: By helping us understand the relevance of evolution to human health By revealing how mutations in genes can lead to disease By providing new tools for forensic investigations All of the above Question 11 5 / 5 points 11. Science is: Question options: the inquiry-based effort to describe and explain nature. the search for truth. an organized set of principles for how to ethically and morally behave. All of the above Question 12 5 / 5 points 12. People with lactose intolerance do not have enough: Question options: galactose. lactase. glucose. fructose. Question 13 5 / 5 points 13. In the following reaction, what type of bond is holding the two atoms together? K Cl → K Cl- → KCl Question options: Hydrophilic Ionic Hydrophobic Covalent Question 14 0 / 5 points 14. Which of these is required for natural selection to occur? Question options: Inheritance Unequal reproductive success Individual variation All of the above (Incorrect) Question 15 5 / 5 points `15. Humans are composed of __________ cells. Question options: bacterial eukaryotic plant prokaryotic Question 16 0 / 5 points 16. The model on the left is not realistic in that: Question options: neutrons are not located in the nucleus. the electrons should be much farther away from the nucleus. electrons do not orbit the nucleus in a ring shape. (Incorrect) electrons do not have a negative charge. Question 17 5 / 5 points 17. Beryllium’s atomic mass is 9 and its atomic number is 4. How many neutrons are found in a beryllium atom? Question options: 9 13 4 5 Question 18 5 / 5 points 18. Which of the following is water hydrophilic? Question options: Cellulose Testosterone Butter Cholesterol Question 19 5 / 5 points 19. A base: Question options: removes H2O molecules from a solution.decreases the pH of a solution. removes OH— ions from a solution.