Molecule shapes Study guides, Revision notes & Summaries

tbr- enzyme kinetics exam questions & answers 2024 allosteric enzyme - ANSWER-often have multiple inhibitor or activator binding sites to change conformation, switching between active and inactive shapes allosteric curve - ANSWER-sigmoidal shape ex. hemoglobin = allosteric protein transition state analogs - ANSWER-synthesized compounds that mimic the form of the transition state of a substrate molecule and binds to the enzyme to inhibit catalysis rxn transition state vs intermedi...

drugs do not create new responses but rather - alter existing physiologic activity in several different ways specific sites which the drug usually forms chemical bonds with - receptors a drug only forms a bond with a receptor if: - - the drug and the receptor have similar shapes - the drug has a chemical affinity for the receptor the study of the interactions between drugs and their receptors and the series of events that result in a pharmacologic response - pharmacodynamics T/F: the bett...

E. Ability to have a general effect on cellular signaling machinery - ANSWER Which of the following is NOT a key property of an effective signaling molecule? A. Ability to be synthesized rapidly B. Ability to be degraded rapidly C. Ability to be stored, released, and recovered D. Ability to be transported from the site of synthesis to a site of action E. Ability to have a general effect on cellular signaling machinery B. Different types of cells can have different signaling machinery c...

1. Which of the following tissues is always avascular? A) connective tissue D) epithelial tissue B) muscle tissue E) nervous tissue C) skeletal tissue Ans:  D Difficulty:  Medium 2. A scientist who examines tissue changes that might indicate disease is called a A) histologist. D) epidemologist B) radiologist. E) endocrinologist. C) pathologist. Ans:  C Difficulty:  Easy 3. The tissue lining body cavities is A) epithelial tissue. D) m...

(Brock University) BIOL 1P91 Midterm Test Questions With Answers | VERIFIED Three subatomic particles - ANSWER protons, neutrons, electrons what shape are s orbitals? - ANSWER spherical How many electrons can each orbital hold? - ANSWER 2 electrons what is an isotope? - ANSWER Atoms of the same element that have different numbers of neutrons What are radioisotopes? - ANSWER unstable isotopes what are the four most abundant elements? - ANSWER oxygen, carbon, hydrogen, nitrogen Thr...

ACS GEN CHEM 1 FINAL Exam 166 Questions with Verified Answers The physical material of the universe. It is anything that has mass and occupies space. - CORRECT ANSWER Matter is made up of relatively few elements. - CORRECT ANSWER Matter The smallest building block of matter. Smallest particle that retains the chemical property of the element (O, He, S). - CORRECT ANSWER Atom Each _______ is made of the same kind of atom - CORRECT ANSWER Element Combination of atoms held together i...

the physical material of the universe. It is anything that has mass and occupies space. - Answer Matter is made up of relatively few elements. - Answer Matter The smallest building block of matter. Smallest particle that retains the chemical property of the element (O, He, S). - Answer Atom Each _______ is made of the same kind of atom - Answer Element Combination of atoms held together in specific shapes - Answer Molecule No fixed volume or shape, conforms to volume an...

Which of the following factors influence the rate at which molecules can diffuse? A. Temperature B. Pressure differential C. Mass of molecule D. Gradient size - Answer-ABCD A red blood cells is placed in a solution that has a higher concentration of impermeable solutes than inside of the cell. What is the result? A. Cell will increase in size B. Cell will decrease in size C. Cell will swell and burst D. Nothing - Answer-B. Water flows from low to high concentration What prevents conce...

Portage Learning CHEM 210 exams 1-8 and final exam Question 1 3 / 3 pts True or False: According to the Module, a compound with a molecular mass of 1,000 g/mol is considered a macromolecule. True Correct! False Question 2 3 / 3 pts True or False: Biomolecules can have only two functional groups. True Correct! False Question 3 3 / 3 pts True or False: The following functional group is an alcohol. True Correct! False Question 4 3 / 3 pts True or False: In ...

Hydrogen Bonds correct answers- Specific type of dipole-dipole interaction - MUST have a H covalently bonded to F O or N Dipole-Dipole correct answers- Attractions between polar molecules - Weaker than covalent bonds - Stronger the dipole moment, the boiling point gets larger Dispersion Forces correct answers- Everything has these - Attractions arise from movement - Short-lived interaction; Very weak - Contribute to ALL intermolecular forces London Forces depend on: polari...