Specialized cellular structures called _______ carry out necessary tasks to support life.
Answer: Organelles
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Biology Chapter 3
- The four major tissue types are _______, _______, _______, and _______.
- A gene segment of DNA contains the blueprint for building one _______.
- The main reason cells go through mitosis is to _______ and _______.
- Cells in a _______ solution will burst (lyse) as water rushes into the cell in an attempt to reach osmotic balance.
- Movement of solutes through cells from a higher to a lower concentration is called _______.
- The job of the Golgi apparatus is to package _______ for export from the cell.
- Microvilli and cell junctions are specializations of which major cell region?
- The essential nutrient _______ comprises over 60% of any living organism's cells.
- Cells build the majority of their components from _______.
- You have two beakers. One contains a solution of HCl at pH = 1.0. The other contains a solution of NaOH at pH = 13. Into a third beaker, you slowly and cautiously pour 20 mL of the HCL and 20 mL of the NaOH. After complete stirring, the pH of the mixture will be
- You have two beakers; one contains pure water, the other contains pure methanol (wood alcohol). The covalent bonds of methanol molecules are nonpolar, so there are no hydrogen bonds among methanol molecules. You pour crystals of table salt (NaCl) into each beaker. Predict what will happen.
- Equal volumes of vinegar from a freshly-opened bottle are added to each of the following solutions. After complete mixing, which of the mixtures will have the highest pH?
- A 100 mL beaker contains 10 mL of NaOH solution at pH = 13. A technician carefully pours into the beaker, 10 mL of HCl at pH = 1. Which of the following statements correctly describes the results of this mixing?
- Carbon dioxide (CO2) is readily soluble in water, according to the equation CO2 + H2O → H2CO3. Carbonic acid (H2CO3) is a weak acid. Respiring cells release CO2. What prediction can we make about the pH of blood as that blood first comes in contact with respiring cells?
- Pure, freshly-distilled water has a pH of 7. This means that
- Consider two solutions: solution X has a pH of 4; solution Y has a pH of 7. From this information, we can reasonably conclude that
- Research indicates that acid precipitation can damage living organisms by
- Assume that acid rain has lowered the pH of a particular lake to pH 4.0. What is the hydroxyl ion concentration of this lake?
- Buffers are substances that help resist shifts in pH by
- Which of the following statements is true about buffer solutions?
- One liter of a solution pH 9 has how many more hydroxyl ions (OH-) than 1 L of a solution of pH 4?
- One liter of a solution of pH 2 has how many more hydrogen ions (H+) than 1 L of a solution of pH 6?
- If the pH of a solution is increased from pH 5 to pH 7, it means that the
- If the pH of a solution is decreased from 9 to 8, it means that the