Question

1. what is the purpose of cellular respiration?

1. what happens to energy in cellular respiration?

1. where does cellular respiration take place?

1. what kinds of cells do cellular respiration? why?

draw a model of the energy change that takes place during respiration

Explanation:

Question 1:

The purpose of cellular respiration is to break down glucose (and other organic molecules) to produce adenosine triphosphate (ATP), which is the energy - currency of the cell. Cells need ATP to carry out various metabolic processes such as active transport, synthesis of macromolecules, and muscle contraction.

Question 2:

In cellular respiration, the chemical energy stored in glucose (and other fuel molecules) is converted into the chemical energy of ATP. Some energy is also released as heat. The process involves the oxidation of glucose, and the energy released from the breakdown of glucose is used to phosphorylate ADP (adenosine diphosphate) to form ATP.

Question 3:

Cellular respiration has two main stages in terms of location. Glycolysis occurs in the cytoplasm of the cell. The Krebs cycle (also known as the citric acid cycle) and the electron transport chain, which are part of aerobic respiration, take place in the mitochondria. In eukaryotic cells, the mitochondria are the main site for the later stages of cellular respiration, while in prokaryotic cells, the processes related to cellular respiration (except glycolysis which is in the cytoplasm) occur in the cell membrane.

Question 4:

All living cells perform cellular respiration. This is because every cell needs energy (in the form of ATP) to carry out its essential functions. Whether it is a prokaryotic cell like a bacterium or a eukaryotic cell like a plant or animal cell, the cell must generate ATP to survive. For example, muscle cells need ATP for contraction, nerve cells need it for signal transmission, and plant cells need it for processes like active transport of nutrients.

Answer:

1.

The purpose of cellular respiration is to produce ATP (adenosine triphosphate) by breaking down glucose (and other organic molecules) to provide energy for cellular processes.

2.

In cellular respiration, the chemical energy in glucose (and other fuel molecules) is converted into the chemical energy of ATP, with some energy released as heat.

3.

Glycolysis occurs in the cytoplasm. The Krebs cycle and electron transport chain (in aerobic respiration) occur in the mitochondria (in eukaryotes); in prokaryotes, glycolysis is in the cytoplasm and other respiration - related processes are in the cell membrane.

4.

All living cells perform cellular respiration because all cells need ATP (energy) to carry out essential life functions (e.g., metabolism, transport, synthesis).