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Explanation for multiple biological questions

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1) Are your conclusion about membrane structure and stress valid only for beet cells? Why or why not?

2) What characteristics of beets make them useful as experimental models for studying cellular membranes?

3) Explain why phospholipids have a natural tendency to self assemble into a bilayer. Why is this biologically important?

4) Freezing temperatures are often used to preserve food. considering the results of this experiment, which qualities of food are preserved and which are not?

5) Movement of water through membranes has long puzzled scientists. Why would you not expect water to move easily through a membrane?

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Solution Preview

Hi there,

1) Are your conclusions about membrane structure and stress valid only for beet cells? Why or why not?
No. there is a possibility that these conclusions also work for many cell types derived from various organisms. Though cell structure is different from cell type to cell type depending on the specific functions for that type of cells, all cells are vulnerable to stress.

2) What characteristics of beets make them useful as experimental models for studying cellular membranes?

In the vacuoles within the cell, beets ...

Solution Summary

The solution provides detailed explanation for some biological questions.

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Anthropology multiple choice questions

1. Which of the following is characteristic of the anthropological approach?
a. an emphasis on biological explanations of cultural variation
b. ethnocentrism
c. an emphasis on shared customs and institutions
d. an emphasis on the individual
e. all of the above

2. Anthropologists generally consider cultural elements to be __________ in nature.
a. technological
b. artistic
c. material
d. symbolic
e. innate

3. The attempt to evaluate and understand a custom in the context of the meaning system and morality of the culture in which it is present is called:
a. ethnocentrism
b. ethnography
c. cultural ecology
d. cultural relativism
e. the etic approach

4. The practice of understanding and evaluating a custom in the context of one's own culture is called:
a. ethnocentrism
b. ethnography
c. cultural ecology
d. cultural relativism
e. the etic approach

5. Which statement about the relationship between environment and human behaviour best summarizes the anthropological approach
a. Human behaviour can be understood as a biological conditioned response to environmental stimulate
b. Human behaviour can be understood as a direct response to environmental conditions and stimulae.
c. Human behaviour can be understood as a culturally conditioned response to environmental stimulae.
d. Human behaviour can be understood without any reference to environmental conditions at all.

6. Which statement about human races best summarizes anthropological findings?
a. Popular racial categories are biologically significant units of anthropological analysis
b. Popular racial categories need to be further refined to formulate biologically significant units
c. Popular racial categories are socio-cultural constructs of no potential biological significance.
d. Popular racial categories have no biological or socio-cultural significance.

7. Which statement about the evolution of culture and the human brain is the most accurate
a. Evidence of cultural behaviour does not appear until human brain size attained its current dimensions
b. Evidence of cultural behaviour appears soon after an initial spurt in brain size growth.
c. Evidence of cultural behaviour appears immediately before an initial spurt in brain size growth
d. Human brain sizes can be expected to increase dramatically in the wake of the recent "information revolution."

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