Body Systems and Homeostasis

Homeostasis can be defined as the dynamic constancy of the internal environment.

False (B)

To maintain internal consistency, the human body must have sensors that are able to measure each condition of the internal environment.

<p>The control center maintains the 'set point'.</p> Signup and view all the answers

<p>The integrating center sends a message to increase or decrease the activity of particular effectors.</p> Signup and view all the answers

<p>Effectors are generally muscles or glands and can change the value of the condition in questions back to the set point. This is called the response.</p> Signup and view all the answers

<p>Negative feedback loops maintain a state of homeostasis, or dynamic constancy of the internal environment, by correcting deviations from a set point.</p> Signup and view all the answers

<p>Carbon, Hydrogen and Oxygen (D)</p> Signup and view all the answers

<p>Essential short and long term energy for living organisms.</p> Signup and view all the answers

<p>Monosaccharides (B)</p> Signup and view all the answers

<p>All of the above (D)</p> Signup and view all the answers

<p>Two monosaccharide molecules are bonded by dehydration synthesis reaction.</p> Signup and view all the answers

<p>Sucrose is made up of glucose and fructose</p> Signup and view all the answers

<p>Polymers of monosaccharides are joined by dehydration synthesis.</p> Signup and view all the answers

<p>Polysaccharides.</p> Signup and view all the answers

<p>Molecules that build cell membranes, build steroids and hormones and are used for insulation.</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>One glycerol and 3 fatty acid molecules called a triglyceride</p> Signup and view all the answers

<p>Saturated fats have single bonds between carbons in the fatty acid chains while unsaturated fats have double bonds between carbons in the fatty acid chain.</p> Signup and view all the answers

<p>Saturated fats are solid</p> Signup and view all the answers

<p>Phospholipids</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Progesterone, cholesterol, testosterone or estrogen</p> Signup and view all the answers

<p>Waterproof feathers/fur/leaves or lubricate ear drum.</p> Signup and view all the answers

<p>The main material that make up cell parts, which serve many functions in the body.</p> Signup and view all the answers

<p>The 3D shape.</p> Signup and view all the answers

<p>Their shape.</p> Signup and view all the answers

<p>42°C (C)</p> Signup and view all the answers

<p>A sequence of amino acids in the polypeptide chain.</p> Signup and view all the answers

<p>Proteins (C)</p> Signup and view all the answers

<p>Nucleic acids.</p> Signup and view all the answers

<p>All can affect enzyme activity (A)</p> Signup and view all the answers

<p>35°C-40°C</p> Signup and view all the answers

<p>Competitive inhibitors or non-competitive inhibitors.</p> Signup and view all the answers

<p>Enzyme, Catalyst (2 Benefits),Active SIte and Substrate</p> Signup and view all the answers

The dynamic constancy of the internal environment in an organism.

A brain or spinal cord region that maintains internal conditions by processing sensor information.

Muscles or glands that react to signals from the control center to restore balance.

A process that reverses a deviation from a set point to maintain homeostasis.

Large organic compounds essential for life, including carbohydrates, lipids, proteins, and nucleic acids.

The process of joining two molecules by removing water to form a larger molecule.

The chemical breakdown of a compound due to a reaction with water.

Organic compounds made up of sugars, used for energy storage and supply.

Polymers made of amino acids that perform essential functions in the body.

Fats and oils used for energy storage, insulation, and making hormones.

Deoxyribonucleic acid that carries genetic information in living organisms.

Ribonucleic acid that plays a crucial role in the synthesis of proteins.

Proteins that act as catalysts to speed up chemical reactions in the body.

The specific region of an enzyme where substrate molecules bind.

The reactant molecule that an enzyme acts upon.

Inorganic substances that assist enzymes in catalyzing reactions.

Organic molecules that help enzymes catalyze reactions, often vitamins.

Substances that block the active site of an enzyme, slowing down reactions.

Substances that attach to an enzyme and change its shape, preventing substrate binding.

Long chains of monosaccharides that store energy, like starch.

The simplest form of carbohydrates, like glucose.

Two monosaccharides combined through dehydration synthesis.

A polysaccharide used by plants to store energy.

A polysaccharide stored in animal muscles and liver for energy source.

A polysaccharide that forms the structure of plant cell walls.

Covalent bonds that link amino acids to form proteins.

The process where proteins lose their shape and function due to environmental changes.

A method to test for the presence of proteins using a biuret solution.

A label on food packaging that provides information on nutrient content.