Bio Ch 1 Flashcards
What is the smallest unit of matter,
atom
All individuals of a given species living in an area at a defined time are a ______,
population
The process by which the sun’s energy is trapped by plants as the source of energy,
Photosynthesis
Do human cells have a cell membrane?,
yes
Does Bacteria have DNA,
yes
What structure controls what enters and leaves the cell,
membrane
What structure contains the “instructions” on how the cell functions,
DNA
What kind of cell doesn’t have DNA in the nucleus and is typically very small,
Prokaryotic
What kind of cell has DNA in the nucleus and an enclosed membrane,
Eukaryotic
What are 2 things the Prokaryotic and Eukaryotic cells have in common,
Cell membrane and DNA
What 4 things contribute to DNA being the blueprint for life,
- All cells have DNA
- DNA can be replicated and passed on
- DNA can be modified over time, allowing adaptation
- DNA translates into physical traits
In DNA the _______ face towards the inside of the twisted ladder,
nitrogenous pairs
Cytosine pairs with _____,
Guanine
Adenine Pairs with ___,
Thymine
The organisms within domain Eukarya have ______ cells,
eukaryotic
order of classification from most general to most specific (8)
Domain-Kingdom-Phylum-Class-Order-Family-Genus-Species
A group of college students order a pizza with mushrooms, ham, and pineapple. The mushrooms belong to the kingdom ________,
fungi
The organisms found within domain Bacteria have _______ cells,
prokaryotic
Which of the kingdoms contains primarily multicellular, larger-celled, photosynthetic organisms?,
Plante
Some members of a species have a genetic change that causes them to be better suited to their environment. These members survive to reproduce and pass these genetic changes to their offspring. This is,
Adaptation, natural selection, the driving force for evolution
T/F Unequal reproductive success leads to evolution of adaptations in populations,
TRUE
T/F The members of a population that are best suited for their environment will live long enough to pass on their genes (traits) to their offspring,
TRUE
In an experiment, the outcomes that will be recorded (data) or the variable that changes because of the experiment is the,
dependent variable
A proposed explanation for a set of observations is a(n),
hypothesis
A scientist is performing an experiment on a group of four mice to test a new artificial sweetener. Each mouse is given a different amount of sweetener. Which mouse is considered to be the control,
The mouse given no sweetener
What kingdom(s) contain multicellular organism that ingest their food,
Animalia
All living things can be arranged into ‘levels with increasing organizational complexity. Biologist refer to this as:,
Hierarchial Organization of life
Living organisms are characterized by what 3 characteristics,
adaping to the environment, evolving, and displaying homeostatic mechanisms
Are bacteria in domain Eukarya or Prokarya,
Prokarya
what domain contanins common advanced plants, animals, and fungi,
Eukarya
Is an hypothesis always true,
no
Charles Darwin determined the mechanism for evolution by observing what phenomonons (3),
Individuals in a population vary in their traits, Many traits are passed on from parent to offspring, a population can produce more offspring than an environment can support
At which level of organization would a protein, such as hemoglobin be placed?,
molecule
As complexities increase, new properties that did not exist in lower levels of organization are observed. What is this called?,
Emergent Properties
do thoughts require cells?,
yes
Is the sun the ultimate source of energy on earth,
yes
What is the process by which changes occur in the characteristics of species of organisms over time,
evolution
When many similar cells are grouped together, what is formed?,
tissue
What term is based on the greek root words for “laws” of “classification”,
taxonomy
What are composed of multiple organs working together for a common function for the life of an organism,
organ system
All Cells have these 4 things,
DNA, Ribsomes, Plasma membrane, Cytoplasm
Which is larger, DNA or carbon,
DNA
Which is more complex, eukariotic or prokariotic,
Eurkariotic
what are the 4 nitrogenous bases,
Adenie, Thymine, Guanine, Cyosine
Do humans share genetic code,
no
What are teh four kingdoms in domain eukarya,
protista, plante, fungi, animalia
Explain the cycle of nutrience,
Sun gives producers (plants) energy, plants give consumers (animals energy), Consumers give decomposers energy when they die, and decomposers give plants energy
What is teh general structure of DNA,
Composed of nucleotide which are made of 3 parts; Nitrgeneous base, sugar, and phosphate group
What does DNA do,
Make celluar products that direct delvelopment and growth of the organism, Reproduce itself without error, pass hereditary information(genes) from parent ot offspring, be modified over a long period of time to allow evolution
What are the 3 domains of life and what kingdom are they in,
Bacteria (Prokariotic), Archaria (Prokariotic), Eukarya (Eukariotic)
What is a major feature of the Protista kingdom,
unicellular
What is a Scientific Theory,
A hypothesis supported by a large & growing body of evidence and is accepted to be fact
