What type of cell is responsible for immune responses?
Neutrophil
Erythrocyte
Lymphocyte
Macrophage
How many pairs of chromosomes are in a human cell?
23
24
26
46
What is the process by which plants use light to create energy?
Cellular respiration
Photosynthesis
Fermentation
Metabolism
What organelle contains enzymes that break down waste materials?
Nucleus
Mitochondria
Lysosome
Ribosome
What is the outermost layer of cells in plants called?
Epidermis
Mesophyll
Endodermis
Cuticle
Which of these is an example of asexual reproduction?
Fertilization
Parthenogenesis
Pollination
Meiosis
What is the most abundant element found in living organisms?
Carbon
Hydrogen
Oxygen
Nitrogen
What is the main function of proteins in the body?
To provide energy
To store genetic information
To act as hormones
To build and maintain structures
What are the two major components of DNA?
Phosphate and sugar
Adenine and thymine
Glucose and fructose
Ribose and uracil
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