Quiz 3

What is normally considered the basic unit of life?

• Tissue

• Organ

• Cell

• Organism

Which of the following processes occurs in the mitochondria?

• Photosynthesis

• Cellular respiration

• Protein synthesis

• DNA replication

What is the function of ribosomes in a cell?

• Energy production

• DNA storage

• Protein Synthesis

• Lipid Synthesis

Which of the following is a characteristic of prokaryotic cells?

• Membrane-bound organelles

• Nucleus

• Circular DNA

• Multicellular

In genetics, what does the term "phenotype" refer to?

• The genetic makeup of an organism

• The physical appearance of an organism

• The location of a gene

• The number of chromosomes

What is the primary function of the xylem in plants?

• Transport of sugars

• Transport of water and minerals

• Photosynthesis

• Gas exchange

Which of the following is NOT a type of RNA?

• mRNA

• tRNA

• rRNA

• dRNA

What is the role of enzymes in biological reactions?

• They increase the temperature of the reaction.

• They provide energy for the reaction.

• They act as catalysts to speed up reactions.

• They change the pH of the reaction.

Which of the following best describes natural selection?

• The process by which organisms with favorable traits survive and reproduce.

• The random mutation of genes in a population.

• The intentional breeding of organisms by humans.

• The extinction of species due to environmental changes.

What is the main purpose of the human circulatory system?

• To transport oxygen and nutrients to cells

• To produce hormones

• To digest food

• To filter waste from the blood