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HESI Prep
Biology
141
Biology
Undergraduate 1
06/02/2013

Additional Biology Flashcards

 


 

Cards

Term
The order of hierarchic system of organization in order from the most inclusive to the least
Definition

Kingdom

Phylum 

Class 

Order 

Family 

Genus 

Species 

Term
Whi is the first scientist that introduced the notion of evolution as the core theme in biology (1859)
Definition
Charles Darwin
Term
What is the book where Darwin introduced the notion of evolution?
Definition
On the Origin of Species 
Term
Darwin proposed that current species arose from a process called ______
Definition
descent with modification
Term
The steps that must be followed before perform any experiments are
Definition

1. Hypothesis 

2. Experiment 

3. Conclusion 

Term
What is Hypothesis
Definition
Statement or explanation of certain events or happenings
Term
What is experiments in scientific method?
Definition
repeatable procedure of gathering data to support or proof hypothesis
Term
What is the composition of water?
Definition
two hydrogen atoms bond covalently to one oxygen atom
Term
What kind of bond is water?
Definition
covalent
Term
What is the most significant aspect of water?
Definition
The polarity of its bond
Term
With the polar nature of water that allows for hydrogen bonding between molecules, this give several benefits to intermolecular bonding. Such as
Definition

1. Water's high specific heat 

2. Stong cohesive and adhesive properties 

3. act as versatile solvent 

Term
What is the specific heat of a molelecule?
Definition

the amount of heat necessary to raise the temperature of 1 gram of that molecule by 1 C. 

 

 

* water has relatively high specific heat value that allows them to resist shifts in temperature. 

Term
What is one of the most powerful benefit of water specific heat?
Definition
the ability of oceans or large bodies of water to stabilize climates
Term
Cohesion
Definition

the ability of a molecule to stay bonded or attracted to another molecule of the same substance 

 

* ex/ water tends to run together on a newly waxed car 

Term
Adhesion
Definition

the ability of water to bond or attracted other molecules or substances 

 

* when water is sprayed on a wall, some of it sticks to the wall 

Term
when water freezes, it forms ___, whcih actually causes the molecules to spread apart, resulting in the phenomenon of ___
Definition
Lattice, floating
Term
Do most solid molecules in solid form do not float on the liquid form of the substance
Definition
True
Term
The polatiry of water also allows it to act as a vesatile solvent. What does this means?
Definition
Water can be used to dissolve a number of different substances
Term
What are the significant molecules to biology?
Definition

Carbohydrates

lipids

proteins

nucleic acid 

Term
What are carbohydrates?
Definition
long chains / polymers of sugar
Term
What are the main function of Carbohydrates?
Definition

Storage

Structure

Energy 

Term
What is other name for lipids, and some types of lipids
Definition

fats

 

Fatty Acids, 

Phospholipids 

Steroids 

Term
two groups of Fatty Acids
Definition
Saturated and Unsaturated
Term
Saturated Vs. Unsaturated fats
Definition

Saturated: contain no double bonds in their hydrocarbon tail

They are solid

Unsaturated: have one or more double bonds

They are liquid at room temperature 

Term
Which fats that general public considers detrimental. Such as cardiovascular problems that are likely develop with diets that contain high quantities of these fats
Definition
Saturated
Term
What are phospholipids?
Definition
Two fatty acids of varying lenth bonded to a phosphate group
Term
in Phospholipids, the phosphate group (head) is charged therefore it is _____, whereas the hydrocarbon (tail) is _____
Definition

Polar 

Non polar 

Term
The polar head and nonpolar tail in phospholipids is important in the function of _____ to create _____
Definition

Cell membrane 

 

barrier that protects the cell 

Term
What is steroids?
Definition
component of membranes, but more important and many of them are precursor to significant hormones
Term
The type of molecules that are significant contributor to cellular function
Definition
Proteins
Term
Protein are polymers of 20 molecules called
Definition
amino acid
Term
_______ are particular types of proteins that act to catalyze diferent reactions or processes
Definition
Enzymes
Term
What are components of the molecules of inheritance
Definition
Nucleic Acid
Term
_____ is a unique molecule specific to a particular organism and contains the code that is necessary for replication
Definition
DNA
Term
_____ is used in transfer and as a messenger in most species of the genetic code
Definition
RNA
Term
What is DNA and RNA stands for simultaneously
Definition

DNA - Deoxyribonucleic Acid

Ribonucleic Acid 

Term
The sum of all chemical reactions that occur in an organism
Definition
Metabolism
Term
the series of steps of reaction in a cell is called _____ that progressing from a standpoint of high energy to low energy
Definition
metabolic pathways
Term
the catalyze of all reactions are
Definition
enzymes
Term
The fundamental unit of biology
Definition
Cell
Term
What are the two different types of cell
Definition
Prokaryotic and Eukaryotic
Term
Cells consist of many components, most of which are reffered as
Definition
Organelles
Term
What type of cell that lack of nucleus and do not contain membrane-bound organelles?
Definition
Prokaryotic
Term
What type of cell that have nucleus (membrane-enclosed) and a series of membrane bound organelles?
Definition
Eukaryotic
Term
What organelles contain DNA of the cell
Definition
Nucleus
Term
in nucleus, DNA of the cell is organized in ______
Definition
chromosomes
Term
what do Chromosomes consist of
Definition

material for the regeneration of the cell 

instructions for the function of the cell

Term

T/F

Does every organism has a characteristic number of chromosomes specific to the particular species?

Definition
True
Term
Organelles that read the RNA produced in the nucleus and translate the genetic instruction to produce proteins
Definition
Ribosomes
Term

T/F

Cell with high rate of protein synthesis generally have a large number of ribosomes 

Definition
True
Term
Where are the location of ribosomes?
Definition

Bound ribosome attached to endoplasmic reticulum (ER)

free ribosomes found in the cytoplasm

Term

True or false 

Both free ribosome and bound ribosome are interchangeable and have identical structures even though they have slightly different roles 

 

Definition
True
Term
what is the membranous organelle found attached to nuclear membrane and consists of two continuous parts?
Definition
Endoplasmic Reticulum
Term
The part or ER that covered with ribosomes are called
Definition
Rough ER
Term
The function of Rough ER
Definition
Protein synthesis and membrane production
Term
type of ER that lack of ribosomes
Definition
smooth ER
Term
The function of smooth ER
Definition
detoxification and etabolism of multiple molecules
Term
the packaging, processing, shipping organelle inside the cell is called
Definition
Golgi Apparatus
Term
the function of Golgi Apparatus
Definition
Transport materials from ER thoughout the cell
Term
Intracellular digestion takes place in ______
Definition
Lysosomes
Term
The function of lysosomes
Definition
hydrolyze proteins, fats, sugars, and nucleic acids since they are packed with hydrolitic enzymes
Term
membrane enclosed structures that have various functions, depending on cell type are called
Definition
vacuoles
Term
What is the term for a process of uptake food through the cell membrane, creating a fod vacuole?
Definition
Phagocytosis
Term
Two distinct organelles that produce cell energy are _____
Definition
Mitochondria and Chloroplast
Term
Where do Mitochondria and Chloroplast located?
Definition

Mitochondria - Eukaryotic cell 

Chloroplast - Prokaryotic cell (plants)

Term
What is the function of Mitochondria
Definition
the site of cellular respiration
Term
What is the function of Chloroplasts?
Definition
the site of photosynthesis
Term
What is the most important component of the cell contributing to protection, communication, and the passage of substances into and out of the cell?
Definition
Cellular membrane
Term
The function of Cellular membrane
Definition

Protection 

Communication

Passage of substances in and out of the cell 

Term
The composition of a cell membrane are_____
Definition

Phospholipids with protein 

Cholesterol 

Glycoproteins 

Term
Because phospholipids are _____ molecules, this bilayer creates a hydrophobic region betwee the two layers of lipids, aking it selectively permeable
Definition
Amphipathic
Term

T/F

cellular respiration produces far more energy than anaerobic fermentation 

Definition
True
Term
What is the equation balance for cellular respiration
Definition
C6H1206 + 6O2 --> 6CO2 + 6H2O
Term
the molecule that is used as the currency of the cell is
Definition
adenosine triphosphate (ATP)
Term
another compound that act as a reducing agent in cell respiration and is a vehicle of stored energy is
Definition
nicotinamide adenine dinucleotide (NADH)
Term
What is the function of NADH
Definition
precursor to produce greater amount of ATP in the final steps of respiration
Term
What is the first step of respiration
Definition
glycolysis
Term
during glycolysis _____ transformed into ____
Definition
glucose to pyruvate
Term
where does glycolysis take place and what is the product?
Definition

in the cytosol of the cell 

 

2ATP, 2 pyruvate, 2 NADH 

Term
what is the second step of respiration where pyruvate transported to mitochondrion and used in the first series of reaction called _____
Definition
Krebs Cycle
Term
where does Krebs Cycle takes place
Definition
in the mitochondria
Term
What is the precursor and product in Krebs Cycle?
Definition

Precursor: glucose, 2 ATP, 6 CO2

 

Product: 6NADH

Term
What is the third step of respiration that begins with the oxidation of the NADH molecules to produce oxygen and finally produce water in a series of steps called
Definition
electron transport chain
Term
Which steps produce the most energy?
Definition
electron transport chain
Term
What is the product in electron transport chain for every glucose molecule?
Definition
28-32 ATP
Term
What is the overall ATP production numbers of ATP for every glucose molecule consumed in cellular respiration?
Definition
32-26 ATP
Term
a precursor to the glucose moleculeis produced in a process called
Definition
photosynthesis
Term
What is the chemical reation for photosynthesis?
Definition
6 CO2 + 6H20 + light -> C6H12O6 + 6O2
Term
What are the two different stages of photosynthesis?
Definition
light reactions and Calvin cycle
Term
What is the function of light reaction?
Definition
convert solar energy to chemical energy
Term
How does photosynthesis works in light reaction?
Definition
the cell absorb light and using that energy to split a water molecule and transfer the electron to create NADPH and producing ATP that is needed for the cell to start the Calvin cycle to produce sugar
Term
The sugar in phososynthesis is polymerized and stored as a ______
Definition
polymer of glucose
Term
What is the purpose of storing sugar in polymer of glucose?
Definition
to be consumed by the organism or plant to produce energy by cellular respiration
Term
Cell reproduce by three different process, all of which fall into two categories which are _____
Definition
sexual and asexual
Term

Two types of asexual reproduction 

 

Definition
binary fission and mitosis
Term
The process where the chromosome bind to plasma membrane, where it replicates and grows, pinches in two, produce two identical cell is called ___
Definition
binary fission
Term
the process of cell division occurs in five stages before pinching in two is called
Definition
cytokinesis
Term
What are the five stages of cytokinesis?
Definition

Profase 

prometaphase

Metaphase

Anaphase

Telophase 

 

Term
The process where the chromosomes are visibily separate and each duplicated chromosome has two noticeable sister chromatids called ____
Definition
pr
Term
The nuclear envelope begins to disappear and the chromosomes begin to atttach to the spindle phase follows with all the chromosome aligning along
Definition
prometaphase
Term
during metaphase, all the chromosomes aligning along what is it called?
Definition
metaphase plate or the center of the cell
Term
_____ begins when the chromosomes start to separate. in this phase, chromatids are consider separate chromosomes
Definition
Ananphase
Term
in this phase, the chromosomes gather on either side of the now separating cell. and this phase is the end of mitosis
Definition
Telophase
Term
what is the second process associated with cell division?
Definition
cytokinesis
Term
What happen during the cytokinesis phase which is separate from the mitosis
Definition
the cell pinches into two, forming two  separate identical cell
Term
What is the difference between sexual and asexual reproduction
Definition

 asexual: the offspring come from a single cell, and all produced cell will be identical 

sexual: two cell contribute genetic material to the daughter cell, that results in greater variation. these two cell find and fertilize each other randomly, that makes the cell impossible to be alike 

Term
the process that determines how reproductive system divide in sexually reproductive organism is _____
Definition
meiosis
Term
What is the two distinct stage in meiosis and the product of it
Definition

meiosis 1 and 2 

 

four daughter cells 

Term
each of these daughter cells contain how many choromosmes as the parent?
Definition
half
Term
during this phase, the chromosomes are duplicated and the cell prepare for division
Definition
interphase
Term

meiosis vs mitosis 

the significant difference between meiosis and mitosis occur in 

Definition

prophase 1 

 

Term
Using garden peas, _____ discovered the basic principle of genetics
Definition
Greor Mendel
Term

T/F

from Mendel's studies, scientists have found that for every trait expressed in a sexually reproducing organism, there would be at least two alternative version of a gene

Definition
true
Term
two alternative version of gene is called
Definition
alleles
Term
for simple traits, the version can be one of two types
Definition
dominant and recessive
Term

if both of the alleles are the same type, the organism will be called _____. 

if they are different types, the organism will be called _____

Definition

homozygous

 

heterozygois 

Term
what is the name of the device that can predict genotype (combination of alleles) and phenotype (what traits will be expressed) of the offspring of sexual reproduction
Definition
Punnett square
Term
other methods that can be used to do genetic expression are
Definition

multiple alleles, 

pleiotropy

epistasis

polyenic inheritance 

Term
a method that use family tree to traces the occurrence of a certain trait through several generation is ______. it is also useful to understand the gentic past as well as the possible future
Definition
pedigree
Term
____ is the genetic material of a cell and is the vehicle of intheritance
Definition
DNA
Term
in 1953, ____ and ____ described the structure of DNA
Definition
Watson and Crick
Term
They described a double helix structure contain 4 nitrogenous bases which are _____
Definition

Adenine

Guanine

Thymine

Cytosine 

Term
What are the bonding for all the four nitrogenous bases to form a specific bonding pattern?
Definition

A-T

G-C

Term
During this process, the strands are separated. Then with several enzymes, new strands created that gives two new double-stranded segment of DNA identical to the original
Definition
Replication
Term
Each gene along a strand of DNA is a template for ____
Definition
protein synthesis
Term
the production of protein synthesis starts where RNA strand, a complementary strand of DNA is being produced  This process is called
Definition
Transcription
Term
during transcription, the piece of genetic material produced that is called ____
Definition
messenger RNA (mRNA)
Term
In RNA, Thymine is being subtitute with ____
Definition
Uracil
Term
what is the function of mRNA?
Definition
messanger from the original DNA helix in the nucleus to the ribosomes in the cytosol or on the rough ER>
Term
the ribosome in mRNA act as ____
Definition
the site of translation
Term
every group of three bases along the RNA is called ___ and each of these codes for a specific amino acid
Definition
codon
Term
Where does the anticodon located?
Definition
Transfer RNA (tRNA)
Term
where does the chain of amino acids ended?
Definition
stop codon
Term
what happen in stop codon?
Definition
the chain is transported into cytoplasm and pretein folds onto itsef and form its complete conformation
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