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Biology

If a body cell of a chimpanzee contains 48 chromosomes, a gamete produced by a chimpanzee will contain how many chromosomes?

which trophic level is there the least energy available? asecondary consumer bprimary consumer ctertiary consumer dproducer

Name the eight terrestrial biomes and provide a brief description of each.

Which activity is a function of blood?

In an alternate version of the universe, the earth rotates around its axis at the same speed with which it revolves around the sun (ie. 365 of our days for one rotation/r). Think about what this means for the time period of day and night in "alter-Earth". What would be the approximate value of the period of the rhythm that would evolve in most species in this world? a. 365 days b. 182.5 days c. 730 days d. There will be no rhythms based on the light cycle

Drag the tiles to the correct boxes to complete the pairs. Match the invasive species to their effects: clogging engine cooling systems, causing the extinction of bandicoots, and blocking waterways.1. Feral cats 2. Water hyacinths 3. Zebra mussels

Explain how a mutation causing resistance to pyrethrins and pyrethroids would spread through a population of bed bugs that are being treated with the pesticide. A) In a population of bed bugs, variation exists. Some variation provides resistance to the pesticides. Those bed bugs survive to reproduce, passing the resistance on to offspring. Eliminate B) Mutations happen randomly to change the gene pool of a population. The mutations are favored when a population of organisms winds up in an environment in which the mutations happen to be useful. C) When a population of insects, like bed bugs, is subjected to pesticides, some of the bed bugs alter their genetic make-up and they are able to survive. They then pass the new genes on to offspring. D) In any population of organisms, sexual reproduction provides for variation in the gene pool. Such variation allows some insects to be resistant to pesticides. When sexual reproduction occurs again, the resistance is passed to offspring.

DNA replication or repair occurs in a cell in all of the following situations, EXCEPT when

Genetic drift happens in a population A. by chance. B. because of survival of the fittest.

Wind is related to the movement of warm and cold air masses. Which kind of heat transfer does this represent

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