Biology Exam I Key Concepts

<p>It has hydrophilic heads and hydrophobic tails. (D)</p> Signup and view all the answers

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

<p>Hydrophobic and hydrophilic interactions, as well as disulfide bonds (B)</p> Signup and view all the answers

<p>Trans-fats have higher melting points. (D)</p> Signup and view all the answers

<p>It is the sum of the number of protons and neutrons in the nucleus. (B)</p> Signup and view all the answers

<p>Ionic bonds are formed by the attraction between oppositely charged ions, while covalent bonds involve sharing of electrons. (D)</p> Signup and view all the answers

<p>Possession of a nucleus. (C)</p> Signup and view all the answers

<p>To confirm that the experimental setup is capable of producing a result. (A)</p> Signup and view all the answers

<p>It retains the same number of protons but has a different number of neutrons. (C)</p> Signup and view all the answers

<p>Ice forms a solid lattice structure that is less dense than liquid water. (A)</p> Signup and view all the answers

<p>Create a hypothesis based on observations before conducting an experiment. (D)</p> Signup and view all the answers

<p>Prokaryotic cells lack a true nucleus. (A)</p> Signup and view all the answers

Three main classifications: Archaea, Bacteria, Eukarya.

A systematic process for experimentation and analysis.

A testable prediction made before an experiment.

A group in an experiment that receives a treatment expected to show results.

A group in an experiment that does not receive treatment, ensuring results are due to the experimental variable.

The smallest unit of an element that retains its properties.

A bond formed when atoms share electrons.

Atoms of the same element with different numbers of neutrons.

Carbon is vital for organic molecules due to its ability to form four bonds.

Specific groups of atoms that determine the characteristics of organic compounds.

Provide energy and structural support within living organisms.

A simple sugar with a six-carbon chain, critical for energy production.

Saturated fats have no double bonds; unsaturated fats contain one or more double bonds affecting health.

A covalent bond formed between amino acids during protein synthesis.

Proteins have four levels of structure: primary, secondary, tertiary, and quaternary, essential for function.