FREE BIOLOGY AND STUDY GAMES ABOUT BIO 181 EXAM

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FREE BIOLOGY AND STUDY GAMES ABOUT BIO 181 EXAM

1 Qs and Ans Expert- Explanation

This Exam contains:

-Guarantee passing score -67 Questions and Answers -format set of multiple-choice -Expert- Explanation

Question 1: Buffer

Answer:

Substance that resists a change in pH by absorbing or releasing hydrogen and hydroxide ions.

Question 2: Element

Answer:

Group of all atoms that have the same number of protons

Question 3: Eukaryote

Answer:

Organism with cells that have nuclei and membrance-bound organsims

Question 4: Ion

Answer:

Atom or chemical group that does not contain equal numbers of protons and electrons.

Question 5: Prokaryote Cell

Answer:

Unicellular organism that lacks a nucleus or any other membrane-bound organelle

Question 6: Ionic Bond

Answer:

Chemical bond that forms between ions with opposite charges (cations and anions).

Question 7: Electrons

Answer:

Negatively charged subatomic particle that resides outside of the nucleus in the electron orbital; lacks functional mass and has a negative charge of -1 unit.

Question 8: Multicellular

Answer:

Organisms that are composed of more than one cell, with groups of cells differentiating to take on specialized functions.

Question 9: Atoms

Answer:

Smallest stable units of matter

Question 10: Smooth Endoplasmic Reticulum

Answer:

Region of the endoplasmic reticulum that has few or no ribosomes on its cytoplasmic surface and synthesizes carbohydrates, lipids, and steroid hormones; detoxifies certain chemicals ), and stores calcium ions.

Question 11: Bacteria

Answer:

Type of cell that has a large domain of prokaryotic microorganisms

Question 12: Hydrolysis Reaction

Answer:

Causes a breakdown of larger molecules into smaller molecules by utilizing water.

Question 13: Mass Number

Answer:

Protons + Neutrons

Question 14: Isotopes

Answer:

Atoms whose nuclei contain different numbers of neutrons

Question 15: Evolution

Answer:

The process of gradual change in a population or species over time

Question 16: Polymers

Answer:

Many molecules are part of a chain

Question 17: Neutrons

Answer:

Uncharged particle that resides in an atom's nucleus; has a mass of one amu

Question 18: Protein

Answer:

Biological macromolecule comprised of one or more amino acid chains

Question 19: Amino Acids

Answer:

A protein's monomer; has a central carbon or alpha carbon to which an amino group, a carboxyl group, a hydrogen and an R group or side chain is attached: R group is different for having 20 common amino acids.

Question 20: Prokaryote

Answer:

Single-celled organism that lacks organelles and does not have nuclei surrounded by a nuclear membrane.

Question 21: Glucose

Answer:

Similar sugar which is an important energy source in living organisms and is a component of many carbohydrates

Question 22: Hydrophobic

Answer:

Describes uncharged nonpolar molecules that do not interact well with polar molecules such as water.

Question 23: Archaea

Answer:

Any of a group of single-celled prokaryotic organisms that have distinct molecular characteristics separating them from bacteria as well as from eukaryotes

Question 24: Dehydration Synthesis Reaction

Answer:

A reaction that links monomer molecules, releasing a water molecule for each bond formed.

Question 25: Nitrogenous Base

Answer:

A molecule that contains nitrogen and has the chemical properties of a base.

Question 26: The Golgi Apparatus

Answer:

Eukaryotic organelle comprised of a series of stacked membranes that sorts, tags, and packages lipids and proteins for distribution

Question 27: Disaccharide

Answer:

Two sugar monomers that a glycosidic bond links

Question 28: Cohesion

Answer:

Intermolecular forces between water molecules caused by the polar nature of water, responsible for surface tension.