Biology, 23.09.2019 08:10 valdezavery9018
Amutation occurs in the brain cells of an elephant in the african savannah. which statement concerning the spread of this mutation through the elephant population is correct?
a. it will spread because it is beneficial
b. it will not spread because it is a recessive gene
c. it will spread because it is a dominant gene
d. it will not spread because it is not in a gamete
Answers: 1
Biology, 21.06.2019 22:40
Sea levels are rising due to climate change while increasing numbers of people are moving into coastal areas. to accommodate more people, there has been increased construction of beachfront resorts and condominiums. how is this impacting sea turtle numbers and biodiversity and why? a. the increased human population in coastal areas has meant that more food is available to the turtles (e.g., dropped food, waste from restaurants), which has led to an increase in the numbers and diversity of sea turtles. b. there has been very little change in the numbers and biodiversity of sea turtles because the planet is so vast that they can simply relocate to less crowded beaches. c. this has resulted in a decrease in numbers and diversity of sea turtles because it is restricting available nesting sites, and hence reproduction. d. this has resulted in an increase in numbers and diversity of sea turtles because people are around to protect them from natural predators.
Answers: 1
Biology, 22.06.2019 04:40
The cluster of developing cells from conception until birth is called an
Answers: 1
Biology, 22.06.2019 06:50
The kidney filters potentially toxic substances in the blood, and thus “clears” the blood of those substances. this clearance function is dependent upon and proportional to the diffusion gradient of the substance across filtering capillaries, i.e. if the concentration of the substance is doubled, twice as much will be cleared from each ml of blood that is filtered. suppose that the body produces a constant amount of a substance x per unit of time. the kidneys eliminate substance x at a rate directly proportional to the concentration of the substance and the volume of blood cleared each minute (c): elimination = c × [x], where [x] is the steady-state concentration of substance x. imagine an individual with an initial concentration of x equal to [x]0 who develops kidney disease. her baseline clearance c0 drops to one half of the original (½c0). what is the new steady state concentration of x? (for simplicity, assume that substance x is 100% filtered by the kidney).
Answers: 1
Biology, 22.06.2019 07:30
Which locations on the map are low-pressure areas? a b c d e
Answers: 1
Amutation occurs in the brain cells of an elephant in the african savannah. which statement concerni...
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