#1
Which organelle is responsible for producing energy in a cell?
Mitochondrion
ExplanationMitochondria are the powerhouse of the cell, generating energy through cellular respiration.
#2
What is the primary function of DNA?
Protein synthesis
ExplanationDNA serves as a template for protein synthesis, directing the formation of proteins in the cell.
#3
Which of the following is a function of the circulatory system?
Transporting oxygen
ExplanationThe circulatory system transports oxygen, nutrients, and hormones throughout the body.
#4
What is the basic unit of heredity?
Gene
ExplanationGenes are the basic units of heredity, carrying genetic information that determines traits.
#5
What is the name of the process by which cells divide to produce new cells?
Mitosis
ExplanationMitosis is the cell division process resulting in two identical daughter cells.
#6
Which of the following is NOT a kingdom in the classification of living organisms?
Mycelium
ExplanationMycelium is not a kingdom; it is a type of fungal structure.
#7
What is the name of the process by which plants make their food?
Photosynthesis
ExplanationPhotosynthesis is the process by which plants convert light energy into chemical energy to produce their own food.
#8
Which of the following is a function of the ribosome?
Protein synthesis
ExplanationRibosomes are cellular structures where protein synthesis occurs.
#9
What is the term for the process by which an organism develops from a fertilized egg?
Embryogenesis
ExplanationEmbryogenesis is the process of development from a fertilized egg to a fully formed organism.
#10
What is the primary function of the nervous system?
Transmitting signals
ExplanationThe nervous system's primary function is to transmit signals between different parts of the body.
#11
Which scientist is credited with discovering the structure of DNA?
James Watson
ExplanationJames Watson, along with Francis Crick, is credited with the discovery of the double helical structure of DNA.
#12
Which of the following is NOT a characteristic of prokaryotic cells?
Presence of membrane-bound organelles
ExplanationProkaryotic cells lack membrane-bound organelles, a characteristic of eukaryotic cells.
#13
What is the term for the process by which cells break down food molecules to release energy?
Respiration
ExplanationRespiration is the process where cells release energy from food molecules.
#14
What is the term for a group of organisms capable of interbreeding and producing fertile offspring?
Species
ExplanationA species is a group of organisms that can interbreed and produce fertile offspring.
#15
Which of the following is a characteristic of the cell membrane?
It regulates the passage of substances into and out of the cell
ExplanationThe cell membrane regulates the movement of substances in and out of the cell, maintaining internal balance.