EDPUZZLE 1
Organisms were originally categorized into just two kingdoms. How many are there today?
6 1. Archaebacteria 2. Eubacteria 3. Protists 4. Plants 5. Animals 6. Fungi
WHATS THE ANSWER ?
A
pseudopod
A "false foot" or temporary bulge of cytoplasm used for feeding and movement in some protozoans.
genus
A group of similar species
Natural selection
A process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits. (Darwin's Theory)
hypertonic solution
A solution in which the concentration of solutes is greater than that of the cell that resides in the solution - presents less water
WHATS THE DNA SEQUENCE FOR PHENY-GLYCINE-THREONINE???
AAA CCC TGG
analogous structures
Body parts that share a common function, but not structure
How are cells differentiated in organisms ?
Each cell contains the same DNA but gene expression is different
restriction enzymes
Enzyme that cuts DNA at a specific sequence of nucleotides
Hypotonic
Having a lower concentration of solute than another solution - presents more water
King Philip Came Over For Good Soup
Kingdom, Phylum, Class, Order, Family, Genus, Species
introns
Noncoding segments of nucleic acid that lie between coding sequences.
punctuated equilibrium
Pattern of evolution in which long stable periods are interrupted by brief periods of more rapid change
convergent evolution
Process by which unrelated organisms independently evolve similarities when adapting to similar environments
a new organism is discovered. It is multicellular, autotrophic, and does not move on its own. To which kingdoms could the organism belong ?
Protista and plantae
Which of the following statements about rough endoplasmic reticulum (ER) is accurate ?
Rough ER indirectly helps with the production of protein because it is covered with ribosomes
homologous structure
Structures in different species that are similar because of common ancestry.
radial symmetry
Symmetry about a central axis.
Which DNA strands would produce the amino acid sequence below? ISOLEUCINE TYROSINE HISTIDINE (REMEMBER TOO LOOK IF IT'S ASKING FOR DNA OR RNA)
TAA ATG GTA
plasmolysis
This happens when a cell shrinks inside its cell wall while the cell wall remains intact.
Stem cells differentiate into a variety of specialized cell types. Stem cells in adult organisms function as repair system. Based on this information, future stem cell research will MOST likely be focused on which?
Using stem cells to cure disease
The enzyme hexokinase binds to glucose and ATP during chemical reactions. At what location do they connect?
active site - enzymes bond w substrates at the active site
the scientific name
always start w a capitalized Genus and is followed by an adjective while being italicized
Which biomolecule does not have any carbon-nitrogen bonds ?
carbohydrates - C6H12O6 (carbon are present but not nitrogen
polyploidy
condition in which an organism has extra sets of chromosomes
which concept explains the fact that many forms of aquatic animals look alike, even though they have very diverse ancestors
convergent evolution
the presence of large quantities of which protein determines when mitosis will occur ?
cyclin
which is true of the DNA produced by replication ?
each new molecules is half new DNA and half original DNa
Extrons
expressed sequence of DNA; codes for a protein
which organelles will a photosynthetic unicellular organism use to find the light ?
eyespots
which would provide the least genetic evidence of a crime ?
fingerprints (fingerprints has no dna present)
protista are considered probable ancestors of what other kingdoms ?
fungi, plants, and animals
which explains how buffers help cells to maintain homeostasis ?
help keep the pH within a cell constant
if a solution outside a cell is more concentrated than the environment inside the cell, what is the term given for the solution outside the cell?
hypertonic
fraternal twins may or may not share similar characteristics due to
independent assortment
why is natural selection, as a scientific model, applied at the population level and NOT at the individual level ?
individuals cannot change inheritable traits
which is created by transgenic organism and utilized by humans ?
insulin
which is true concerning the polyploidy condition ?
it is often lethal in mammals but beneficial in plants
in which of the following taxonomic groups would organisms have the LEAST number of similarities ?
kingdom - since it's the broadest
Sickle cells anemia provides advantage to
malaria
which of these would be a model of diffusion? - diffusion = things moving from high concentration to lower concentration
many students pass from a crowded room into an empty hallway
which adaptations enable primates to reside in trees better ?
opposable thumbs
which organism uses a pseudopod for feeding and to escape from danger ?
organism 1 (amoeba)
why is pH within the cell so important to cellular function ?
pH affects protein shape, so most enzymes have a small, functional pH range
which would most likely to be able to cross the phospholipid bilayer (2) of the cell membrane ?
protein - protein is way bigger than water
SPC. EBB
species, population, community, ecosystem, biome, biosphere
Cytolysis
the bursting of a cell
if a cell is exposed to a chemical that inhibits the production of spindle fibers as the cell is preparing for mitosis, what would MOST likely happen? - inhibits = hinder/restrain
the cell would not divide
which statement BEST explain how RNA polymerase knows where to start and stop making an RNA copy of DNA?
the enzyme only binds to regions of DNA known as promoters, which have specific base sequences - promoters = substrates
primitive always starts
the last specie has all of the characteristics in the graph
what occurs when a ribosome reaches a stop codon ?
the newly formed polypeptide chain is released
two organisms mate and produce infertile offspring. Which of the following statements BEST explains why the offspring are unable to reproduce ?
the parents are of a different species, but of a same genus
how does each person's DNA differ?
there are different orders of nitrogenous based
what can a geneticist conclude about the bands of DNA closest to the wells within an agarose gel?
these are the largest fragments - big fragments are slow & does not have much movement
which property supports the hypothesis hat eukaryotic mitochondria were once prokaryotic organisms?
they have nucleotides in their DNA
what is the purpose of gel elecyrophoresis
to separate DNA fragments by SIZE (REMEMBER BY SIZE)
which statement describes the MOST likely effect of transformation on bacteria such as E.Coli?
transformed bacteria express new protein products
placing salt water on injury. what will happen to the bacteria?
water will rush out of the cells passively causing them to undergo plasmolysis - plasmolysis: shrivel and die
divergent evolution
when two or more species sharing a common ancestor become more different over time