H Bio - Unit 2 Metabolism & Survival

Metabolic pathways are controlled by the presence or absence of _______.

• Proteins

• Substrates

• Enzymes

• Homeostasis

Catabolic reactions break down large molecules down into smaller smaller molecules, releasing energy.

• True

• False

Anabolic reactions results in larger molecules being produced from smaller molecules. This process creates energy.

• True

• False

What is x?

• Phospholipid molecule

• Protein pump

• Channel forming protein

• Amino acid

Molecules move through channel proteins in the cell membrane by

• diffusion

• osmosis

• active transport

• ATP

Acetyl-coenzyme A combines with ____________to form Citrate.

• citric acid

• acetyl

• pyruvate

• oxaloacetate

At the electron transport chain, oxygen combines with which two molecules to form water?

• Hydrogen and electrons

• NADH and carbon dioxide

• Synthase and electrons

• Hydrogen and water

The Citric acid cycle takes place in the cristae of the mitochondria.

• True

• False

Glycolysis occurs in the cytoplasm and does not require oxygen. This is the only stage in respiration that is the same as Fermentation.

• True

• False

For regulators internal body temperature is controlled by the ?

• Brain

• Effectors in the skin

• The Hypothalamus

• External factors