Bio Unit 3

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

<p>It helps them to float and maintain their position in water. (B)</p> Signup and view all the answers

<p>It increases the resistance fish face while swimming. (A)</p> Signup and view all the answers

<p>To regulate buoyancy and floatation. (A)</p> Signup and view all the answers

<p>Viscosity increases. (D)</p> Signup and view all the answers

<p>Charge and size (D)</p> Signup and view all the answers

<p>To facilitate passive movement of specific molecules (A)</p> Signup and view all the answers

<p>The irreversible change in the functional shape of a protein (C)</p> Signup and view all the answers

<p>Towards areas of higher solute concentration (C)</p> Signup and view all the answers

<p>They can interact with both polar and non-polar parts of the bilayer (B)</p> Signup and view all the answers

<p>Facilitated diffusion involves channel proteins (C)</p> Signup and view all the answers

<p>It requires energy to move molecules against their concentration gradient (C)</p> Signup and view all the answers

<p>Cell recognition and joining cells together (D)</p> Signup and view all the answers

<p>As a dynamic mix of lipid layers and mobile proteins (B)</p> Signup and view all the answers

<p>It can easily release heat from metabolic processes. (D)</p> Signup and view all the answers

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

<p>Cellulose (D)</p> Signup and view all the answers

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

<p>Presence of single bonds (C)</p> Signup and view all the answers

<p>Trans has hydrogen atoms on opposite sides, while cis has them on the same side. (B)</p> Signup and view all the answers

<p>Storing energy long-term (C)</p> Signup and view all the answers

<p>Two fatty acids, a glycerol backbone, and a phosphate group (C)</p> Signup and view all the answers

<p>To split larger molecules into smaller ones (A)</p> Signup and view all the answers

<p>Containing both hydrophobic and hydrophilic regions (D)</p> Signup and view all the answers

<p>They lack the ability to synthesize 11 out of 20 amino acids. (C)</p> Signup and view all the answers

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

<p>It regulates temperature stability in water bodies. (D)</p> Signup and view all the answers

<p>Phospholipid tails (A)</p> Signup and view all the answers

<p>Non-polar steroid molecules (A)</p> Signup and view all the answers

Water molecules sticking together due to hydrogen bonds. This creates surface tension and is important for water transport in plants.

Water molecules sticking to other substances, like plant cell walls (xylem).

Water can dissolve many substances (hydrophilic solutes).

Substances that dissolve well in water (polar molecules or ions).

Substances that do not dissolve in water (non-polar molecules).

Water moves up plants through cohesion-tension and capillary action, crucial for nutrient and water absorption.

The upward force exerted by a liquid on an object.

Water's resistance to flow.

Polypeptides fold into specific 3D shapes to become functional proteins. This shape is determined by interactions between amino acid R-groups.

A permanent change in a protein shape, disrupting its function, often caused by heat or extreme pH.

A two-layered structure of phospholipids forming the cell membrane, controlling what enters and leaves the cell.

Passive movement of molecules from high to low concentration, driven by random motion.

A membrane that allows some molecules to pass through but not others, crucial for cell control.

The passive movement of water molecules across a semi-permeable membrane, towards a higher solute concentration.

Passive transport across the membrane via a protein channel, helping polar/charged molecules move.

Movement of molecules against their concentration gradient, requiring energy (ATP).

Transmembrane proteins embedded within the lipid bilayer, often involved in transport.

The model describing the cell membrane as a fluid structure with various protein components.

The ease with which heat passes through a material.

Energy required to raise the temperature of 1 gram of a substance by 1 degree Celsius.

A substance that releases heat quickly from metabolic reactions in the body.

A substance that doesn't easily conduct heat.

A reaction where molecules combine by removing water molecules.

The splitting of a molecule by adding water.

A single sugar molecule.

Many monosaccharides linked together.

A polysaccharide that stores energy in animals.

A polysaccharide that forms plant cell walls.

A protein with a carbohydrate chain attached.

Long carbon chains with a carboxyl group.

A glycerol molecule with three fatty acid chains.

A lipid with a glycerol, two fatty acids, and a phosphate group.

The building blocks of proteins.

Long chains of amino acids.