Sample Biology Tests/Quizzes
I'm curious to see what those at home think of the level of science I'm teaching out here, so test yourselves, if you like, with the sample exam below, administered to my 10th grade students today:
Biology
Form II Winter Term
Unit Test: Cells
February 2011
60 points
1.) In a typical cell placed into fresh water, osmotic pressure produces: (2 points)
a.) active transport
b.) a net movement of water out of the cell
c.) a net movement of water into the cell
d.) protein synthesis
e.) no change
2.) Which of the following is an example of active transport? (2 points)
a.) Facilitated diffusion
b.) diffusion
c.) osmosis
3.) Which of the following is an example of a prokaryote? (2 points)
a.) Plant
b.) Bacteria
c.) Red Blood Cell
Fill in the blank: (3 points)
4.) Osmosis is the diffusion of ________ through a selectively permeable membrane.
The _____________ regulates what enters and leaves the cell and also provides protection and support.
_________________ causes many substances to move across a cell membrane but does not require the cell to use energy.
5.) A substance that moves across a cell membrane without using the cell's energy tends to move (2 points)
a.) away from the area of equilibrium
b.) away from the area where it is less concentrated
c.) away from the area where it is more concentrated
d.) toward the area where it is more concentrated
6.) Proteins are polymers formed from: (2 points)
a.) lipids
b.) carbohydrates
c.) amino acids
d.) nucleic acids
Complete the following analogy:
7.) Amino Acids:Protein :: Fatty Acid Chains::_______?________ (2 points)
a.) lipids
b.) carbohydrates
c.) nucleotides
d.) bases
8.) Support : Cell wall : energy release : ________?_______ (2 points)
a.) cytoskeleton
b.) nucleus
c.) Golgi Apparatus
d.) ribosomes
e.) mitochondria
In an experiment, red blood cells were placed in salt solutions of varying concentrations. The rate at which the cells absorbed salt from the solution was then measured for the different concentrations. The results are summarized in the graph:
Rate of Salt Uptake
(micromol/g/L)
500 |
| |
|
| ********* | ******************** | ****************** |
300 | ******* |
|
|
******* |
|
|
|
0 ** |
|
|
|
0 10 20 30 40
Concentration of Salt (mmol/L)
9.) The graph shows that as the concentration of salt increases from 10 to 30 mmol/L, the cells: (2 points)
a.) take in salt more slowly
b.) take in salt more quickly
c.) fail to take in more salt
d.) lose salt more quickly
10.) Consider the following phrase, “The cell theory revolutionized the way biologists thought about living things.” Using your knowledge of cells and your own analytical skills, write a short essay to support or refute (disagree with) this statement. (10 points)
11.) Fill in the blank: (2 points)
“As a cell gets larger, its volume increases at a faster rate than its surface area.” This is a description of the _________ ______ to _________ ratio.
12.) Cells are small for practical reasons. Explain in a short essay (one paragraph). (10 points)
13.) Next to each organelle name, describe it's function: (9 points)
Nucleus:
Golgi Apparatus:
Endoplasmic Reticulum:
Ribosomes:
Lysosomes:
Mitochondria:
Cell Membrane:
Cytoplasm:
Chromatin:
14.) Short Essay (10 points): Compare a cell to a factory, as in the chapter, or to something else, such as a school. Use that analogy to describe the function of different parts of the cell.
***How would you have done?***
And here's another sample assessment, this one given to my 9th grade students last week:
Form 1 Week 5 Quiz – 15 points total
Four groups of organic compounds found in living things are: (4 points)
In polymerization, complex molecules are formed by the joining together of _________ (1pt)
Living things use ___________ as their main source of energy. (1 point)
Carbohydrates come in two forms: simple sugars, or __________________, like glucose, or more complex polymers, or ______________ like cellulose. (2 points)
Though a carbon atom has 6 total electrons, it has 4 ___________ electrons. The __________ electrons are those electrons available for _______________. (2 points)
Plants use carbohydrates for “structural purposes.” In other words, what does that mean? (2 points)
What are the two parts of a lipid's molecular structure? (2 points)
What is the difference between Acids and Bases? How do their numbers on the pH scale differ? (1 pt)
The challenge of starting up all of these classes and programs out here – (we now have 335 students in our programs from the boarding school, elementary-level tutoring, Adult English classes, Finance-University Classes, and Executive MBA classes, all run by a total of less-than 20 teachers) - while working to become completely financially self-sustaining, is the issue of what I guess might be classified as growing pains. The initial allotment of money the founder invested in this place has been stretched as far as it will go; more funding is needed simply to build the buildings we need on the campus – larger boy's dorms, an English-teaching building with a separate women's cafeteria and study space, additional teacher housing as well as funding to complete construction on the mosque, and additional structures for security, just to name a few of these expenses. Of course it seems that in the non-profit world as everywhere, there are always expenses adding up, but it is particularly frustrating for me to see this here, as I have never seen such an example of fiscal responsibility as I witness daily at AT. I am learning more about finance and the time value of money here than anywhere – even at the University of Chicago, with all the heady talk of the Milton Friedman school and the Graduate School of Business, I never saw an eye on money with such relentless persistence, such devotion to putting it to the best possible use, as here. And yet the school meets with resistance from those we thought we could rely on for the most support. Rather than offering up the share of support they could give to the school, many Somalis – from villagers to the wealthier Somalis involved with the school – simply look to take (and take, and take, and take) what they can get from its services. We have been doled out enormous bills, in several instances of late, rather than modicums of financial or social support. This does nothing to aid the school on its path to becoming financially self-sustaining, but behooves us to double down and dig in even deeper.
Teachers here are so motivated and dedicated; each teacher is taking on the role of advisor for 8-10 students, in addition to running clubs, supervising work-times, coaching sports, writing curriculums, coordinating standardized testing (SAT, TOEFL) programs, managing and writing policies, and that's only in the boarding school alone! There are the aforementioned university, MBA, tutoring, and adult English programs as well, all managed by our teaching staff of less-than-twenty. While we are as enthusiastic about these projects and driven-as-can-be to see success take shape here and serve these ever-so-deserving students, it is shocking that others (those in the local community, or whose businesses or families benefit from these services) do not share this same compulsion to invest at least a little bit of energy, effort, time, or money in the project.
As an example of the resistance I'm describing, consider this:
Some of the villagers demand that those we hire from their ranks be paid more and more, for poorly done or even incomplete work. While the other teachers and I put in 80+hours of work/week while making less than $3,000 for the year (we enjoy the work very much, and are proud to do it, but still), it is unnerving to see that those who do so little and yet benefit from the addition of educational and economic stimulus only demand more.
I attended a meeting with a collection of village council members a few weeks ago, with some of our best students serving as translators. The villagers were miffed that AT had fired the staff members we'd hired from the village, because these staff members were not doing their work (at all!) and were in fact causing more harm than good (these staff members were mainly responsible for managing the student kitchen, which was consistently understocked, and routinely left several students without food at the end of each meal! Abominable!)
So we had a meeting in which to negotiate new terms for hiring new workers and try to patch up the relationship of the school with the village. But rather than gratitude for the work we've done to educate their children and help their community, this group of villagers wanted more and more of us. Hire more workers, pay them better, paint all the buildings in the town, begin to run the village elementary school, provide electricity and running water, fix the road, etc etc. There's no end to this! Of course, in time we hope that AT will have the resources to accommodate all these demands, but we can never do it without the willingness of Somalis to work to accept and become part of these programs themselves, and their willingness to support us in these efforts. It was as if the cliches and stereotypes were coming true before my eyes. This group of villagers had come to expect that the white people from the West would do all the work for them, and this is precisely what has led to such a state of disarray in areas serviced by foreign aid – a dependence that leads to malaise and ennui rather than industrialism.
To add insult to the slight psychological pain this meeting caused, the villagers spent the entire meeting chewing qat (the stimulant) and smoking in front of us (this is seen as customary in some ways, though it is not accepted in higher Somali society, and is “haram” according to Islamic practice). The atmosphere was pungent with smoke and the smell of chew as well as the demoralizing attitude and pervasive lack of education, short-sighted, ignorant mentality, and mindlessness induced by a life of qat, poor nutrition, and lack of inspiration. Now this is not a knock on Somali society – every society and culture has its spectrum of struggling to successful individuals, and its own definition of success. But the aspect of this experience that most challenged me was seeing the undeniable truth that these people, after so many years of drug use and isolation, were incapable of sharing a vision for a future life, or a way in which things could be truly different. All they could manage to muster were demands for more money from those they perceived as “Haves.” They could not see that by their agreement, support, friendship, or willingness to work with us, that they could take part in something really great and constructive.
We used this meeting as a “teachable moment” for the students attending with us as translators – here, we explained, were the anti-role models. These people were the reason why we push our students to work so hard; we want our students to see that there is so much more to life than that lifestyle, and to see the difference education can make even in the interpretation of day-to-day activities. I also pointed out that one finds the same malaise and paralysis-of-ignorance in the US too, that it is a human problem, not one of this-culture or that.
Most of the Somali people I've met working with our school have been more than gracious, very intelligent, and it has been an honor for me to get to know them and work with them, and I feel blessed to know and be entrusted to educate their children. But I wanted to share this instance in order to foster better understanding of where we are.