Cell Structure and Function

During which phase of meiosis does crossing over occur?

• Metaphase II
• Anaphase I
• Telophase II
• Prophase I

What term is used to describe a cell with the normal paired set of chromosomes?

• Haploid
• Diploid
• Homologous
• Chiasma

Which of the following structures is present in plant cells but absent in animal cells?

• Plasma membrane
• Mitochondria
• Ribosomes
• Cell wall

What is the primary role of ribosomes in the cell?

• Lipid synthesis
• Cell division
• Energy production
• Protein synthesis

Which of the following best describes the function of the endoplasmic reticulum (ER)?

• Site of ATP production
• Site of protein and lipid synthesis
• Site of waste degradation
• Site of photosynthesis