Shortened Title: Biology Questions Answer Key

Sure, I'll help you with your questions. 1. **Giraffes (Giraffa camelopardalis) have 30 chromosomes in their somatic cells. How many chromosomes will each daughter cell have after the final step of meiosis?** In meiosis, the chromosome number is halved. Since giraffes have 30 chromosomes in their somatic cells, which are diploid (2n), their gametes (which result from meiosis and are haploid, n) would have half this number. Therefore, each daughter cell will have: \[ \text{30 chromosomes} \div 2 = 15 chromosomes \] **Answer: 15 chromosomes** 2. **A cell is exposed to a pathogen, and its contractile vacuole is damaged. What function will the cell have difficulty performing?** A contractile vacuole is an organelle found in many freshwater protists that helps to maintain water balance and homeostasis within the cell by expelling excess water. **Answer: C. The cell will have problems maintaining homeostasis.** This disruption can lead to an inability to regulate water balance, causing potential issues with cell stability and function. 3. **A student produces a labeled drawing of a virus for a presentation. The student states that the capsid has a function similar to the nuclear membrane found in animal cells.** **Which of these describes the similar functions of capsids and nuclear membranes?** Both the capsid of a virus and the nuclear membrane in animal cells play crucial roles in protecting the genetic information contained within them. **Answer: D. Both protect genetic information for the structures.** Capsids enclose the viral genetic material, protecting it from the external environment, while nuclear membranes encase the cell's DNA, protecting it within the nucleus.