*Question*
Q: What is the type of cell division that produces gametes called? Read this paragraph and choose the correct option from the provided answers: During sexual reproduction, two haploid gametes join in the process of fertilization to produce a diploid zygote. Meiosis is the type of cell division that produces gametes. It involves two cell divisions and produces four haploid cells. Choices: - mitosis - electrolysis - fertilization - meiosis A:
**Answer**
meiosis

*Question*
Q: Prokaryotic cells can only regulate gene expression by controlling the amount of what? Read this paragraph and choose the correct option from the provided answers: Evolution of Gene Regulation Prokaryotic cells can only regulate gene expression by controlling the amount of transcription. As eukaryotic cells evolved, the complexity of the control of gene expression increased. For example, with the evolution of eukaryotic cells came compartmentalization of important cellular components and cellular processes. A nuclear region that contains the DNA was formed. Transcription and translation were physically separated into two different cellular compartments. It therefore became possible to control gene expression by regulating transcription in the nucleus, and also by controlling the RNA levels and protein translation present outside the nucleus. Some cellular processes arose from the need of the organism to defend itself. Cellular processes such as gene silencing developed to protect the cell from viral or parasitic infections. If the cell could quickly shut off gene expression for a short period of time, it would be able to survive an infection when other organisms could not. Therefore, the organism evolved a new process that helped it survive, and it was able to pass this new development to offspring. Choices: - folding - translation - RNA processing - transcription A:
**Answer**
transcription

*Question*
Q: How is the radioactive decay measured? Read this paragraph and choose the correct option from the provided answers: The rate of radioactive decay varies from one radioisotope to another. The rate is measured by the half-life. This is the length of time it takes for half of a given amount of a radioisotope to decay. Choices: - carbon dating - quarter-life - alpha emission - half-life A:
**Answer**
half-life

*Question*
Q: Metal detectors used for airport security work on which principle? Read this paragraph and choose the correct option from the provided answers: One common application of inductance is used in traffic lights that can tell when vehicles are waiting at the intersection. An electrical circuit with an inductor is placed in the road under the place a waiting car will stop over. The body of the car increases the inductance and the circuit changes sending a signal to the traffic lights to change colors. Similarly, metal detectors used for airport security employ the same technique. A coil or inductor in the metal detector frame acts as both a transmitter and a receiver. The pulsed signal in the transmitter coil induces a signal in the receiver. The self-inductance of the circuit is affected by any metal object in the path. Such detectors can be adjusted for sensitivity and also can indicate the approximate location of metal found on a person. (But they will not be able to detect any plastic explosive such as that found on the "underwear bomber. ") See Figure 23.43. Choices: - electricity - inertia - conductivity - inductance A:
**Answer**
inductance