Biology Study Guide 1
What would be the ultimate effect on an ecosystem if decomposers were eliminated?
All life would eventually cease due to a lack of available nutrients.
To which phylum do humans belong?
Chordata
An organism that is neither prokaryotic nor photosynthetic, and must obtain its nutrients by secreting digestive enzymes into the environment, belongs to which group of organisms?
Fungi
Which is a characteristic of a good hypothesis?
It is falsifiable.
Which statement concerning a scientific theory is FALSE? Group of answer choices
It is unchangeable.
Which scenario best describes a double-blind study?
Neither the investigator nor the subjects know who is in the experimental or control groups.
Which is a byproduct of photosynthesis?
Oxygen
Which cells do not have a nucleus?
Prokaryotic
You discover an organism that is eukaryotic, unicellular, and photosynthetic. Based on this evidence, to which group would you assign this organism?
Protists
Which is a benefit of sexual reproduction over asexual reproduction?
The interaction of the genes from both parents allows genetic variation.
What statement best describes "biology"?
The science of life
What is the purpose of the cilia and flagella of cells?
They provide movement for the cell.
What is an end product of cellular respiration?
carbon dioxide
What is a branching diagram that depicts the relationships among organisms based on shared characteristics?
cladogram
A falsifiable hypothesis cannot be tested.
false
Adaptation involves changes in ecosystem rather than in individual organism.
false
What are units of hereditary information? Group of answer choices
genes
Information in living organisms is transmitted by which mechanism(s)?
genes, hormones, and neurotransmitters
Suppose a particular protein is produced in excess of the cellʼs needs. What kind of mechanism will intervene to stop production?
homeostatic
The primary purpose of homeostasis is to:
maintain a constant internal environment
Using the Linnaean system of nomenclature, corn is named Zea mays. What is the specific epithet in this name?
mays
In living organisms, chemical reactions responsible for growth, repair, and nutrition are collectively referred to as: Group of answer choices
metabolism
DNA molecule is made up of:
necluotidees
Similar families of organisms are next grouped together in the same:
order
When tissues organize, what do they form?
organ
One of the conclusions drawn from Darwinʼs theory of evolution is that:
organisms living today descended from previously existing forms
All members of the same species occupying the same area at the same time constitute a(n):
population
By definition, an organism that is eukaryotic:
possesses a nucleus
Which sequence represents the pattern of energy flow within an ecosystem?
producers → consumers → decomposers
What is a subspecialty of systematics and is the science of naming and classifying organisms?
taxonomy
Which stimulus most directly causes the Venus flytrap to catch an insect?
touch
All of the genes present in a population make up its gene pool.
true
Autotrophs synthesize macromolecules from CO2, water, and energy.
true
The scientific name for coffee is Coffea arabica. More specifically, the species name is arabica.
true