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Bio Ch 1

QuestionAnswer
The partial negative charge at one end of a water molecule is attracted to the partial positive charge of another water molecule. What is this attraction called? a hydrogen bond
What kind of bonds are responsible for the unique cohesion, surface tension, and adhesion properties of water molecules? hydrogen bonding
The many blood vessels in elephants’ ears help them cool their bodies by radiating heat. Which statement about this radiated energy is accurate? The original source of the energy is the sun
Which answer best describes why does ice float in liquid water? Stable hydrogen bonds keep water molecules of ice farther apart than water molecules of liquid water.
A friend of yours calls to say that his car would not start this morning. He asks for your help. You say that you think the battery must be dead. If so, then jump-starting the car from a good battery will solve the problem. In doing so, you are... stating a hypothesis and using that hypothesis to make a testable prediction
What kind of bond is formed between the two hydrogen atoms and the single oxygen atom? polar covalent bonds
Imagine that you have just discovered a new multicellular microscopic organism in a pond. It is propelled by external cilia. What can you say about the evolutionary relationships of this organism? The presence of cilia shows that it shares a common ancestor with Paramecium and humans.
Which of the following is the quality of a good scientific hypothesis? It should be testable in a valid period of time
Why is a scientific topic best discussed by people of varying points of view, from different subdisciplines, and representing diverse cultures? Robust and critical discussion between diverse groups improves scientific thinking.
Following a scientific method, which of the following is the correct order of steps? Observation → Hypothesis → Experiment → Analysis → Conclusion → Communicate results
Which of these provides evidence of the common ancestry of ALL life? near universality of the genetic code
Agrobacterium infects plants and causes them to form tumors. You are asked to determine how long a plant must be exposed to these bacteria to become infected. Which of the following experiments will provide the best data to address that question? Measure the number of tumors formed on plants, which are exposed to Agrobacterium for different lengths of time.
Which of the following is true of natural selection? It requires genetic variation, results in descent with modification, and involves differential reproductive success.
Which of the following instructions contribute to a productive experimental design? alter only one condition between the control and the experimental condition
Which of the following can be attributed to water's high specific heat? A lake heats up more slowly than the air around it.
Which could have occurred due to evolution? different kinds of algae having different kinds of chlorophyll
Which bond or interaction would be difficult to disrupt when compounds are put into water? covalent bonds between carbon atoms
About 25 of the 92 natural elements are known to be essential to life. Which 4 of these 25 elements make up approximately 96% of living matter? carbon, hydrogen, nitrogen, oxygen
A change in which level of biological organization would probably have the farthest-reaching consequences? biosphere
How many electrons does one atom of carbon share to complete its valence shell? 4
The cities of Portland, Oregon, and Minneapolis, Minnesota, are at about the same latitude, but Minneapolis has much hotter summers and much colder winters than Portland. Why? The ocean near Portland moderates the temperature.
Which of the following properties of water is responsible for the formation of raindrops? cohesion property
When your body temperature rises on a hot day, the neural and hormonal mechanisms activate sweating. Evaporation of sweat leads to cooling of the body surface. This is an example of... negative feedback regulation
To understand the chemical basis of inheritance, we must understand the molecular structure of DNA. This is an example of the application of which concept to the study of biology? reductionism
All of the striped skunks hat inhabit an oak forest is an example of a(n)... population
Cohesion, surface tension, and adhesion are the properties of water molecules that.. are a result of hydrogen bonding
Created by: laxgirl
 

 



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