Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
List 3 human activity that affect the transfer of energy in earth's ecosystem.
Why is agar preferable to gelatin as a solidifying agent in culture media?
In animal cells and in the meristem cells of land plants the nuclear envelope disintegrates during mitosis. this disintegration does not occur in the cells of most protists and fungi. according to our
The figure above shows the distribution of pocket-mouse coat colors in several Arizona populations found either on light-colored granite substrate or on dark volcanic rock. Which of the following hypo
The genes IA, IB, and i contribute to the ABO blood antigens in humans. In two other traits, R (Rh+) is dominant to r (Rh-) and M and N are codominant alleles. If a mother with the blood type of A Rh+
Unlike squamous cells, cuboidal and columnar cells have large, open cytoplasms. Which of the functions of epithelial tissue are supported by having such big cells?
Find one example of convergent evolution among the Caminalcules. This means finding cases where two or more species have a similar characteristic that evolved independently in each lineage.
Reverse transcriptase may be present in cells that have not been infected by a retrovirus because of the presence of what?
Muscle cells, when an individual is exercising heavily and when the muscle becomes oxygen deprived, convert pyruvate to lactate. What happens to the lactate in skeletal muscle cells?
What are three systems that evolved from piggybacking on the digestive, circulatory, and respiratory systems?
If one paramecium is placed in a container of water and it could divide every hour, how many paramecia would you have in the container at the end of 24 hours?
Rank from highest osmotic pressure to lowest: 1M CaCl2, 1M KCl, 1M C6H12O6, and 2M CH3OH
What it is the receptor, afferent nerve, integration center, efferent nerve, and effector of the patellar and Aquilles reflex?
You are studying a plant from the arid southwestern United States. Which of the following adaptations is least likely to have evolved in response to water shortages?
Dwarf mistletoes are flowering plants that grow on certain forest trees. They obtain nutrients and water from the vascular tissues of the trees. The trees derive no known benefits from the dwarf mistl
Why do temperatures lower or higher than the optimum cause decreases in invertase activity?
How will the level of DNA compaction change over the life of a cell? Provide and explain at least three specific examples
Spiny species of diatoms are found both in warm subtropical waters as well as in colder areas. Because warm water is less dense than cold water, would you predict any differences between the spines of
How do species evolve from a common ancestor?
What are the differents between metacentric,submetacentric,holocentric,acrocentric and telocentric chromosomes?
What does the inner membrane of the mitochondria do in cellular respiration? What is it's function and relationship to cellular respiration?
Smooth muscle has some unique properties, such as low energy usage, ability to maintain contractions over long periods, and the stress-relaxation response. Tie these properties to the function of smoo
When given a sea hare and a clam together, it has been observed that a lobster will eat the clam first with the probability of .64. What is the probability that the lobster will eat the clam first in
How did Avery and his group determine which molecule was most important for transformation?
Compare the sizes of the different digestive organs in the earthworm. Which organ is the largest? How does its size make it well suited for its function?