Question

what is the term called when referring to a stack of thylakoids?
your answer

which of the organic compounds is composed of amino acids joined by peptide bonds; a primary building block of organisms?
○ nucleic acid
○ proteins
○ carbohydrates
○ lipids

during a school field trip, students observe a fox hunting rabbits in the forest and later eating berries from a bush. which statement best describes the fox?
○ the fox is a heterotroph because it obtains energy by consuming other organisms.
○ the fox is a decomposer because it eats dead organisms.
○ the fox is a producer because it helps control the rabbit population.

Explanation:

First Sub - Question (Term for stack of thylakoids)

In the context of chloroplast structure in plant cells (a topic in Biology, a subfield of Natural Science), a stack of thylakoids is called a granum (plural grana). Thylakoids are membrane - bound structures within chloroplasts where the light - dependent reactions of photosynthesis occur, and when they are stacked, the structure is named a granum.

Nucleic acids are made of nucleotides, carbohydrates are made of monosaccharides (sugars), lipids are made of fatty acids and glycerol (or other components for different lipids), while proteins are polymers made of amino acids joined by peptide bonds. So the correct option is the one labeled "proteins".

Producers are organisms (like plants) that can make their own food through photosynthesis or chemosynthesis. Decomposers break down dead organic matter (like fungi or bacteria). Heterotrophs are organisms that cannot make their own food and obtain energy by consuming other organisms. The fox hunts rabbits (consumes other animals) and eats berries (consumes plant material), so it is a heterotroph. The option saying it is a decomposer is wrong because it doesn't eat dead organisms in the described scenario, and the option saying it is a producer is wrong as it doesn't produce its own food.

Answer:

granum

Second Sub - Question (Organic compound made of amino acids)