SJI 11- ELS CHAPTER 2

Which organelle is known as the "powerhouse of the cell" because it produces energy in the form of ATP?

• Nucleus

• Chloroplast

• Mitochondria

• Ribosome

What do photoautotrophs use to synthesize chemical energy in the form of carbohydrates?

• Oxygen

• Sunlight and carbon dioxide

• Water and nitrogen

• Proteins and fats

What is the primary function of chloroplasts in plant cells?

• Break down food molecules

• Store nutrients

• Trap light energy and convert it into chemical energy

• Produce ATP through cellular respiration

Which of the following organisms are considered heterotrophs?

• Plants

• Algae

• Humans

• Bacteria that perform photosynthesis

Which pigment found in chloroplasts is responsible for absorbing light energy during photosynthesis?

• Hemoglobin

• Chlorophyll

• Melanin

• Carotene

What characteristic do both mitochondria and chloroplasts share?

• They produce food for the cell

• They both have an outer and inner membrane and their own DNA

• They contain chlorophyll

• They are only found in animal cells

Marine algae living in the ocean are one of the world’s largest producers of what substance?

• Nitrogen

• Oxygen

• Carbon dioxide

• Glucose

Which type of organism is capable of photosynthesis?

• Heterotrophs

• Animals

• Photoautotrophs

• Fungi

Mitochondria are involved in which cellular process?

• DNA replication

• Harvesting energy from sunlight

• Breaking down carbon-containing molecules to release energy

• Storing nutrients for the cell

What is the role of ATP in the cell?

• It stores genetic information

• It provides energy for cellular processes

• It helps in the transport of oxygen

• It serves as a structural component of the cell