How Organisms obtain Energy

The 1st Law of Thermodynamics states that:

• Energy cannot be transformed from one form to another

• The Sun is the ultimate source of energy.

• ATP is the ultimate source of energy for cells.

• Energy cannot be created nor destroyed, only transformed.

This is lost towards the environment as one energy transforms to another form.

• Chemical Energy

• Heat Energy

• Light Energy

• Sound Energy

Which energy conversion occurs in the human body?

• Chemical Energy -> Light Energy

• Electrical Energy -> Light Energy

• Chemical Energy -> Mechanical Energy (work)

• Light Energy -> Mechanical Energy (work)

What do you call to those organisms capable of synthesizing its own food from substances using light or chemical energy?

• Autotrophs

• Heterotrophs

• Allotrophs

• Cyanotrophs

Which among the choices are considered "photoautotrophs"?

• Animals

• Fungi

• Humans

• Plants

Humans are classified as:

• Photoautotrophs

• Chemoautotrophs

• Chemoheterotrophs

• Photoheterotrophs

The sum of all the chemical reaction happening in our cell is called:

• Anabolism

• Catabolism

• Botulism

• Metabolism

In this metabolic pathway, large molecules are decomposed to smaller ones and energy is released.

• Anabolism

• Catabolism

• Botulism

• Metabolism

ATP means:

• Adenosine diphosphate

• Adenosine triphosphate

• Adenine diphosphate

• Adenine triphosphate

In animal cells, which organelles produce ATPs?

• Nucleus

• Mitochondria

• Chloroplasts

• Lysosomes