The following diagram is a model of the cell membrane. though small, nonpolar molecules are usually able to pass freely across the cell membrane, larger molecules and ions can only enter and exit cells through carrier proteins or channel proteins.

using the model above for reference, what effect would the removal of carrier proteins likely have on cell transport?
a.
the movement of sodium ions out of the cell would increase.
b.
the movement of glucose molecules into the cell would decrease.
c.
the concentration of glucose molecules outside of the cell would decrease.
d.
the number of protein channels in the membrane would increase.
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If the birth rate of a population of dolphins is 2.0, the death rate is 0.5, and the population size is 100, what is this dolphin's population growth?

1. emigration the movement of people from one place to another 2. immigration a situation in which resources are being used up at a faster rate than they can be replenished 3. migration the leaving of one's homeland to settle in a new place 4. overpopulation the movement of people to a new country 5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population 6. underpopulation the ability to meet current needs without reducing the ability to meet future needs 7. unsustainable development the increase in the population of a city 8. urbanization a situation in which the number of people exceeds the available natural resources in an area

Aresearcher designed an investigation to test what effect eating different types of food would have on blood insulin levels. she selected 10 male subjects who were all 25 years of age and in good health. the experiment took place over 3 days. at 8: 00 a.m. on each day, the subjects ate a meal consisting of only 1 type of food. they had their blood insulin levels measured after consuming the meal. on day 1 they ate a high fat diet, on day 2 they ate a high protein diet, and on day 3 they ate a high sugar diel what is the independent variable in this experiment? a the age of the subjects b the blood insulin level c the type of food consumed d the time of day the meal was consumed