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Exam 1
Review
67
Biology
Undergraduate 1
02/18/2010

Additional Biology Flashcards

 


 

Cards

Term
In methane what is the bond angle between the Carbon and Hydrogen atoms?
Definition
- 109.5
Term
The type of bond between the Carbon and Hydrogen atoms is a(n) _________ bond.
Definition
Covalent
Term
What part of the cell is a phospholipid molecule found
Definition
cell membrane
Term
The building blocks of proteins
Definition
amino acids
Term
The element that forms the backbone of organic molecules
Definition
Carbon
Term
The process that causes water in a narrow tube to rise above the surrounding water
Definition
capillary action
Term
It does not alter the reactions equilibrium between reactants and products, but it does alter the time needed to reach equilibrium, often dramatically
Definition
Catalyst
Term
What is the monomer that makes up chromosomes
Definition
nucleotides
Term
Atoms of an element that posses different numbers of neutrons
Definition
Isotopes
Term
The bond that links nucleic acids
Definition
phosphodiester bond
Term
Adenine: Purine or Pyrimidine?
Definition
Purine
Term
Guanine: Purine or Pyrimidine?
Definition
Purine
Term
Nitrogen containing base is unique to DNA
Definition
Thymine
Term
The energy currency of the cell.
Definition
[image]
Term
The scientist who used x-ray crystallography to help identify the DNA molecule
Definition
Rosalind Franklin
Term
These are attached to the glycerol backbone in a phospholipid molecule
Definition
fatty acids
Term
A given fatty acid with more than one double bond
Definition
triglycerol
Term
Two monosacharides joined by a covalent bond
Definition
dissacharide
Term
They have the same empirical formula, but their atoms are arranged in different ways
Definition
Isomers
Term
It is an insoluble polysaccharide containing branched amylose chains, usually found in animals
Definition
glycogen
Term
The final folded shape of a globular protein, which positions the various motifs and folds the non-polar side groups into the interior
Definition
tertiary structure
Term
Conditions where a protein may lose its shape or even unfolds
Definition
denaturation
Term
Proteins that help proteins fold correctly
Definition
Chaperones
Term
Uracil: Purine or Pyrimidine?
Definition
Pyrimidine
Term
Thymine: Purine or Pyrimidine?
Definition
Pyrimidine
Term
Cytosine: Purine or Pyrimidine?
Definition
Pyrimidine
Term
An explanation of some natural phenomenon that has strong supporting evidence is a(n) ____________.
Definition
Theory
Term
This usually involves the design of an experiment or set of observations in which the scientist predicts the expected results.
Definition
Testing
Term
The hereditary information of all cells is encoded in molecules of ________________.
Definition
DNA
Term
According to the Inquiry Wheel, the focal point of any scientific investigation is the: _________
Definition
Question
Term
This scientist developed, independent from Darwin, a hypothesis of natural selection.
Definition
Alfred Russel Wallace
Term
What are the domains of life?
Definition
Bacteria, Eukarya, Archaea
Term
To evaluate the effectiveness of an experiment that is concerned with one of many variables scientists use a(n) _________________.
Definition
A control
Term
Biological molecules that contain only hydrogen and carbon are called _____________.
Definition
Hydrocarbons
Term
This is the type of reaction that occurs between building block subunits to create proteins, lipids, nucleic acids, and carbohydrates.
Definition
dehydration
Term
The simplest hydrocarbon is ____________.
Definition
Methane
Term
The _______________ is the semifluid matrix found in the interior of a cell.
Definition
Cytoplasm
Term
What is occurring at the nucleolus?
Definition
Ribosomal assembly
Term
The "9+2" arrangement refers to:
Definition
the arrangement of microtubules in flagella and cilia
Term
What is the name for the region of a prokaryotic cell where the DNA is located?
Definition
Nucleoid
Term
The organelle closest to the nucleus is the _______________________.
Definition
Endoplasmic Reticulum
Term
What is the name for the region of a eukaryotic cell where the DNA is located?
Definition
Nucleus
Term
_____________________ is defined as the minimum distance two points can be apart and still be distinguished as separate points.
Definition
Resolution
Term
The net movement of a substance down a concentration gradient is called ________
Definition
Diffusion
Term
In __________________ signaling, molecules cross a short distance between the tips of nerve cells and a target cell.
Definition
Synaptic Signaling
Term
The diffusion of water across a semi-permeable membrane is called __________
Definition
Osmosis
Term
The polar heads of the lipid bilayer interact with water and are said to be ________
Definition
hydrophilic
Term
The lipid tails of the lipid bilayer interact with each other, and not the surrounding water, because they are ____________________.
Definition
Hydrophobic
Term
__________________ is the process of expelling molecules from the cell through fusion of vesicles with the cell membrane.
Definition
exocytosis
Term
In __________________ signaling, secreted molecules enter the bloodstream and affect cells throughout the organism.
Definition
endocrine signaling
Term
What happens to a cell when it is placed in a hypotonic solution?
Definition
Additional water will enter the cell.
Term
__________________ involves the pinching off of a vesicle from the cell membrane to bring particles or liquid into the cell.
Definition
Endocytosis
Term
This type of reasoning applies specific observations to construct general principles.
Definition
Inductive
Term
This scientist first described the cell.
Definition
Robert Hooke
Term
An approach used by scientists to study the natural world is the ___________________.
Definition
Scientific Method
Term
How many covalent bonds can be formed by carbon?
Definition
4
Term
Which of the following fiber types is the largest in diameter?
Definition
Microtubules
Term
What is the purpose of the Golgi body?
Definition
sort and distribute proteins
Term
What is the name of the polysaccharide that makes up the cell wall of bacteria?
Definition
peptidoglycan
Term
A _____________________ electron microscope can visualize the interior structure of a cell by passing electrons through a small cross-section.
Definition
transmission
Term
A newly-synthesized protein is directed to the appropriate cellular location due to the presence of a ________________________________.
Definition
Signal
Term
A _____________________ electron microscope visualizes the surface of an object by looking at reflected electrons.
Definition
Scanning
Term
What happens when a cell is placed in an isotonic solution?
Definition
There is no net movement of water.
Term
What happens when a cell is placed in a hypertonic solution?
Definition
Water leaves the cell.
Term

[image]

 

What is happening?

Definition
Dehydration
Term

[image]

 

What is this molecule?

Definition
Cholesterol
Term

[image]

 

What is this?

Definition
Micelle
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