Podcast
Questions and Answers
What is the primary source of nitrogen for heterotrophs?
What is the primary source of nitrogen for heterotrophs?
- Phosphoric acid (H₃PO₄)
- Nitrogen gas (N2) in the atmosphere
- Sulfur-containing amino acids
- Proteins, DNA, RNA, and ATP (correct)
Which of the following elements is essential for energy transfers in cells?
Which of the following elements is essential for energy transfers in cells?
- Oxygen
- Phosphorus (correct)
- Hydrogen
- Sulfur
What is the term for the transport of molecules against a gradient, requiring energy and carrier proteins?
What is the term for the transport of molecules against a gradient, requiring energy and carrier proteins?
- Passive transport
- Active transport (correct)
- Facilitated diffusion
- Osmosis
Which of the following organisms derives its energy from sunlight and produces oxygen as a byproduct?
Which of the following organisms derives its energy from sunlight and produces oxygen as a byproduct?
What is the term for the process by which substances are taken into a cell without being transported through the membrane, requiring energy?
What is the term for the process by which substances are taken into a cell without being transported through the membrane, requiring energy?
What is the primary function of micronutrients in microbial nutrition?
What is the primary function of micronutrients in microbial nutrition?
Which type of nutrient is composed of carbon and hydrogen atoms?
Which type of nutrient is composed of carbon and hydrogen atoms?
What percentage of a microbial cell is composed of six elements?
What percentage of a microbial cell is composed of six elements?
What is the primary characteristic of heterotrophs?
What is the primary characteristic of heterotrophs?
What type of autotroph derives energy from organic compounds and obtains its carbon source from inorganic compounds?
What type of autotroph derives energy from organic compounds and obtains its carbon source from inorganic compounds?
