cells
To maintain homeostasis, what is the body's autonomic response to dust?
Producing tears
Which two purposes does mitosis serve in humans? (pick 2)
Replace dead cells and repair damaged tissues
Which of the following is the pigment responsible for releasing electrons in sunlight?
chlorophyll
Which process increases diversity by causing variation in genotypes?
meiosis
In which process does water change from liquid to vapor?
evaporation
Which would likely be found in unusually high numbers in heart muscle cells compared to bone cells?
mitochondria
Which provides the best evidence that two different species evolved from a common ancestor?
They share much of the same DNA
What is the overall purpose of cellular respiration?
Produce ATP
Why do sperm cells and egg cells contain only 23 chromosomes each?
so that when those 23 chromosomes duplicate themselves, there will be a total of 46 chromosomes in each cell
At which latitudinal coordinate would a desert most likely be located?
30 degree north
Which are responsible for almost all of the chemical reactions that occur in cells throughout the body?
Proteins
Changes in an organism's DNA sequence may alter its phenotype -- T/f
True
Assume that the producers have 1,000 KJ of energy. Approximately how much energy is transferred to the trophic level directly above the producers?
100k
Which process produces genetic variation?
independent assortment
Which best explains what happens to air just above earth's surface as it becomes heated?
it expands in volume and rises
As the concentration of oxygen inside a cell decreases, oxygen molecules outside of the cell freely pass through the membrane into the cell. Which type of cell membrane transport is indicated?
diffusion
Which statement best explains how phenotype variation affects the survival of a species?
It increases the odds that some individuals with a species will be able to survive changes in their environment
Which statement best describes the relationship between mutations and genetic diversity?
Mutations increase genetic diversity
Which most clearly contributes to genetic variation?
crossing over
Which process is the correct answer to the question (Which best explains what happens to air just above earth's surface as it becomes heated?)
convection
Which of the following is best described as pumping ions against the concentration gradient?
active transport
Which statement best describes the relationship between mutations and genetic diversity?
Mutations increase genetic diversity
An invasive fish species is introduced to a lake by mistake. The species reproduces quickly and has no natural predators in the lake. The invasive species competes with native fish for food and lives at the top of the food chain. Which is most likely to occur?
The invasive fish population will begin to increase, while native fish populations will decrease
A primary consumer is where on a food web
First one that consumes... right after the producers (2nd in the row)
Which statement best describes the relationship between convection currents and plate tectonics?
convection currents cause the movement of tectonic plates