Question: An organism’s first line of defense against attack by an invader such as a virus or bacterium is usually [A]. to flee or hide [B]. its body wall [C]. a specific immune response [D]. a nonspecific immune response Answer:…

Question: Which of the following two organelles look most alike structurally? [A]. Nucleus and vesicle [B]. Golgi apparatus and smooth endoplasmic reticulum ER [C]. Vacuole and cytoskeleton [D]. Lysosome and chloroplast Answer: Option B Explanation: No answer description available for…

Question: Which of the following organelles is directly connected to the outer membrane of the nucleus in a eukaryotic cell? [A]. Mitochondrion [B]. Lysosome [C]. Golgi apparatus [D]. Endoplasmic reticulum Answer: Option D Explanation: No answer description available for this…

Question: Eukaryotic cells are more efficient than prokaryotes because their internal compartmentalization [A]. makes each compartment nutritionally independent of all others [B]. allows for specialization through the subdivision of particular tasks [C]. allows for specialization through merging of different tasks…

Question: According to the fluid mosaic model of cell membranes, [A]. the most common type of molecules in the membrane are proteins [B]. basic membrane structure results from how the proteins interact with water [C]. the membrane is a highly…

Question: Clearly defined nucleus, mitochondria in a large central vacuole and chloroplasts, indicate the group of organisms from [A]. bacteria [B]. fungi [C]. plants [D]. animals Answer: Option C Explanation: No answer description available for this question.

Question: Microtubules, motor proteins, and actin filaments are all part of [A]. the mechanism of photosynthesis that occurs in chloroplasts [B]. the rough ER (endoplasmic reticulum) in prokaryotic cells [C]. the cytoskeleton of eukaryotic cells [D]. the process that moves…

Question: In which of the following cell organelles, it is expected to find the biochemical reactions that harness energy from the breakdown of sugar molecules to synthesize large amounts of ATP? [A]. Lysosome [B]. Vesicles [C]. Mitochondria [D]. Plasma membrane…

Question: Lysosomes are specialized vesicles in __________ that contain digestive enzymes for the breakdown of food. A related organalle known as a vacuole, which is found in __________ , also contains enzymes but in addition may act as a storage…

Question: Which of the following statements about prokaryotes is false? [A]. Prokaryotic cells concentrate important materials for the cells survival [B]. The substance known as cytosol is found within the bacterial nucleus [C]. Prokaryotic cells are much smaller than most…