aids in seed dispersal
The spotted touch-me-not, a flowering plant, has seed pods that burst open when touched and forcefully eject their seeds. Why is this adaptation favorable?
natural selection
Darwin's theory of evolution is based on the concept of what?
variation
What term describes small changes in an organism that may help it survive?
natural selection
What term best describes the survival of organisms with traits best suited to their environment?
white fur in the winter
What variation in the color of a rabbit's fur might help protect it from an arctic fox? Which season during the year would this be the most favorable adaptation?
to classify organism
Why do scientists use a dichotomous key?
genus and species
In binomial nomenclature, what two classifications are used as an organism's scientific name?
heterozygous round seed
Round seed is dominant over wrinkled seed in peas. If homozygous, round seeded peas are crossed with wrinkled seeded peas, what is phenotype(s) of the resulting offspring?
1/4
When you cross two heterozygous organisms, what is the probability that the offspring will show the recessive phenotype?
allele
What is the name of an alternative form of a gene?
Gregor Mendle
Who is considered the father of genetics?
sexual
When offspring show characteristics of both parent organisms, it is a result of what type of reproduction?
they're already adapted to the environment
Asexual organisms, as compared to sexual organisms, tend to be smaller, have shorter life spans, and produce little or no genetic variability between generations. This makes it harder for an individual asexual organism to survive and reproduce. What are t
budding
What type of asexual reproduction occurs when an offspring grows out of the body of the parent and then pinches off to become a new organism? (example: hydra)
organ
The brain would be included in which level of organization?
chloroplasts, cell wall
Which structures are present in plant cells, but not in animal cells?
lysosomes
Which structures would be found in animal cells, but not plant cells?
cell-tissue-organ-organ system-organism
Arrange the levels of organization in order from least complex to most complex.
nucleus
Which organelle controls most of the cell processes and contains the hereditary information of DNA?
cell membrane
Nutrients and oxygen enter cells through which organelle?
turgor pressure
When plant cells absorb a lot of water, this increases their internal cytoplasm pressure. When this happens the cells are said to have high....
cytoplasm
Where does light energy conversion take place inside the cell?
vacuole
Which organelle is responsible for turgor pressure in a plant?
golgi complex, cytoplasm, ribosomes, mitochondria, nucleus, vacuole, cell membrane, ER
There are many different types of cells with many different types of organelles. Which organelles are in both plant and animal cells?
negative
Which type of feedback response counteracts the changes to which they respond?
negative
During a 5K race, the body temperature of a runner increases. The runner's body responds by perspiring, which lowers the runner's body temperature. What is this an example of?
stress
What term is described as a reaction of your body and mind to threatening, challenging, or disturbing events?
homeostasis
What term describes the process by which an organism's internal environment is kept stable in spite of changes in the external environment?
temperature
During the fall, many trees shed their leaves. What stimulus lets the trees know that it is time to shed their leaves?
immune system
What is the body's protection against infection and disease?
skeletal tissue
Which type of muscle tissue is found in the muscles that move your arms and legs?
involuntary movement
Which action does not require you to think about it in order to make it happen?
circulatory and respiratory
The lungs and heart represent which two systems?
excretory and digestive
Which pair of systems is responsible for absorbing nutrients and removing wastes?
circulatory and respiratory
Which two systems work together to provide oxygen to cells?
reproductive
Which system plays a key role in allowing organisms to have offspring and pass on their unique genetic information?
nervous
Which body system is responsible for receiving a stimulus, interpreting the information, and causing a reaction?
muscular and nervous
Carpal tunnel syndrome is a condition caused by excess pressure on a nerve in the wrist. The symptoms include tingling and numbness in the hand, pain, and a weak grip. Which two body systems are most affected by carpal tunnel syndrome?
protect internal organs
What are the functions of the skin?
force acting over a distance
What is work (in terms of science) and provide an example.
remain motionless
If a force of 10,000 Newton's was exerted on an object and no work was done, is the object going to gain momentum, accelerate rapidly, decrease its velocity, or remain motionless?
too close to the sun
What about the location of the planet Mercury makes it hard for life to exist?
no gravity and pressure
What causes deterioration in astronaut's bones and muscles during space travel?