1.) What prevents digestive enzymes from digesting anything and everything in the cell?
a.) Very high specificity
b.) Intercellular communication
c.) Very short half life
d.) Energy requirements
e.) Compartmentalization
1.) What prevents digestive enzymes from digesting anything and everything in the cell? a.) Very high...
21. The ______ prevents plants cells from bursting when place in a ____ solution. a) centrioles-hypotonic b) chloroplasts-hypertonic c) plasma membrane-hypertonic d) vacuole-hypertonic e) cell wall-hypotonic 22. Specialized cells like your own lung cells each lack which of the following organelles which are commonly found in an onion. a) cell membrane b)cell wall c)ribosomes d)nucleolus e) none of the above ______ 23. White blood cells engulf and destroy foreign particles by a process known as phagocytosis which is actually a)...
37. In the lab cellular processes the dialysis tubing represented what? A. Cell wall B. Capsule C. Nucleus D. Plasma membrane E. Ribosome 38. A scientist is studying an unknown cell under the microscope. She observes that the cell has a nucleus, a cell wall, and a large central vacuole. Based on these observations she can conclude that the cell is most likely A. An archaea B. A bacteria cell C. An animal cell D. A plant cell E. A...
Bio 111 intro to cell
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1-3. Refer to the diagram shown below: 1. Use the terms/phrases in the list provided to fill in the blanks a4 points) Function Cell component Letter A plasma membrance B NeNucleolus c Nucleus D -Ribosome. E -Rough ER. F Mito chon Terms (not all terms/phrases will be used) Contains cell's DNA Cell Wall Contains digestive enzymes Chloroplast 6Generates ATP for the cell...
in cardiac 5. Cell-cell communication junctions in plants are called and muscle cells (animal). A. plasmodesmata, anchoring junction B. plasmodesmata gap junction C. stomata; anchoring junction D. stomata; conjunction junction Estomata; gap junction 6. Actin is found in A. cellulose B. intermediate filament C.microfilament D. microtubule E. cristae 7. Based on the endosymbiont theory which was once a free living prokaryote? A. nucleus B. Golgi C. Mitochondria D. rough endoplasmic reticulum E. B and D 8. Active transport A. occurs...
Thinking Through the Concepts Multiple Choice 1. Which of the following is True? a. Enzymes increase activation energy requirements. b. Activation energy is required to initiate exergonic reactions. Heat cannot supply activation energy. c. d. Stomach acid inactivates pepsin. 2. Which is not an example of an exergonic reaction? a. photosynthesis b. a nuclear reaction in the sun c. ATP → ADP + Pi d. glucose breakdown .3, which of the following is True? a. ATP is a long-term energy...
Enzymes are important to biology because they can be used to Select one: O a. Control when chemical reactions happen O b. Control where chemical reactions occur O c. Link different chemical reactions O d. Couple ATP hydrolysis to activity O e. All of the above Diffusion is the movement of solute propelled by collisions with water. Diffusion spontaneously transforms energy concentration gradients into energy equilibrium conditions just like any other spontaneous reaction. Select one: O a. high; high O...
1. A voltaic cell is constructed from a Al/Al half-cell (E'red -1.66 V) and a Fe/Fe? half- cell (Ered-0.44V) Give the oxidation half reaction and E"ox, the reduction half reaction and E'red, and the overall reaction and E"cell: Oxidation: Reduction: red E cell Overall Reaction: 2. For the cell Fe(s) Fe2+ | Pb* | Pb), the standard cell potential is +0.31 V. A cell using these reagents was made, and the observed potential was +0.37 V at 25°C. A) What...
Chapter 7 1. What is the main source of energy for most living organisms? 2. What are the laws that gover the life and death of cells called? 3. Why is an organism's ability to exchange energy with its environment referred to as an open system? 4. What is entropy? 5. What is the second law of thermodynamics? Does the conversion of energy require the use of energy? 6. Define: a. Catabolism b. Anabolism c. Metabolism d. Exergonic e. Endergonic...
1. In paracrine signaling, the signaling molecules affects only: Target cells close to the cell from which it was secreted a. b. Target cells distant from its site of synthesis in cells of an endocrine organ Both a. and b. с. d. None of these 2. Below are listed the events that occur in cell to cell communication. Signal transduction occurs 1. 2. Plasma membrane receptor binds with a ligand A cellular response is effected 3. 4. Ligand is released...
In what way is artificial selection different from natural selection? Question 1 options: A. There is no difference; both have caused evolution throughout the history of life on earth B. Artificial selection applies to changes in domestic animals only, while natural selection applies to all other species C. In artificial selection, human preference is the selecting force; in natural selection, environmental conditions are the selecting force. D. Artificial selection causes one species to change to another, while natural selection only modifies existing species. E. Artificial...