Sem 2 Exam

Question 1

Aggression and submission are examples of responses organisms show to a conflict situation. Collectively animal behavior lists refer to these as:

Answer 1

Agnostic behavior

Question 2

when an organism moves directly toward or away from a stimulus, the movement is referred to as:

Answer 2

Taxis

Question 3

The bond that forms between monosaccharides as a result of condensation synthesis is called:

Answer 3

Glycosidic link

Question 4

One beta-link to monosaccharide, ______, is used in the formation of cellulose, a molecule that is the primary component in the structure of the ______

Answer 4

Beta-glucose/cell wall

Question 5

Which of the following statements is/are not a primary function of the carbohydrates?

Answer 5

Carbohydrates are used as identifiers for cell to cell communication

Question 6

Which of the following are examples of disaccharides?

Answer 6

Maltose and galactose

Question 7

Common table sugar is composed of or contains which of the following?

Answer 7

Alpha-glucose
Fructose
Sucrose
(all of the above)

Question 8

Although we can’t digest cellulose, it does playing important role in our diet, how?

Answer 8

Cellulose is referred to as dietary fiber, it helps keep our colon healthy
Cellulose absorbs fat and moves them through the digestive track and out of the body
Cellulose helps to cleanse the digestive track moving undigested or indigestible material through the digestive track

Question 9

According to class discussion, fructose is especially problematic in our diet because…

Answer 9

Not utilized directly by our cells, gets stored in liver
Fructose is converted into fat in the liver
Excess fat in liver absorbs insulin, required to maintain homeostasis of blood sugar levels
Fatty liver can lead to type-II diabetes

Question 10

In the Korup Forest of Cameroon a black ant species lives in the hollow branches of the barteria tree. The ants clear algae and fungus from the leaves of the tree, and cut creeping vines away. This would be an example of what form of symbiosis?

Answer 10

Mutualism

Question 11

A highly branched starch, _____, may be found as an energy storage carbohydrate in anti al tissues

Answer 11

Glycogen

Question 12

The carbohydrates most responsible for energy storage in nature tend to be composed of…

Answer 12

Alpha-linked monosaccharides

Question 13

The carbohydrates most responsible for structural and strengthening components in nature tend to be composed of…

Answer 13

Beta-linked monosaccharides

Question 14

Probably the most significant source of fructose in the American diet is…

Answer 14

High fructose corn syrup used as the sweetener in most soft drinks

Question 15

Many animals, including man, are not capable of utilizing cellulose produced by the plants. This is because…

Answer 15

They do not have the enzymes capable of breaking beta-bonds

Question 16

The alpha-linked polysaccharides have a tendency to form which of the following secondary structures

Answer 16

Alpha-helices

Question 17

A derivative carbohydrate that functions as an intermediary in energy transfer

Answer 17

Fructose-1,6-diphosphate
Sugar phosphate3

Question 18

Amino sugars are usually used as structural components in nature. The polymer chitin, for example, is used in the _____ of the ______

Answer 18

Exoskeletons/arthropods
Skeletal structures/platyhelminthes

Question 19

The bond that forms from the synthesis that produces a triglyceride from fatty acid tails and a glycerol molecule is called

Answer 19

Ester linkage

Question 20

In general, which of the following foods would be rich in saturated fats?

Answer 20

Animal fat
Whole milk
Butter
Lard
Foods containing partially hydrogenated soybean oil, like Debbie’s Snack Cakes
(all of the above)

Question 21

So, if you were to decide to go on a really long hike and had to pack your food in with you, which of the following foodstuffs would provide the greatest source of energy with least mass?

Answer 21

A pound of margarine

Question 22

Specialization of the type we see among organisms in The Korup leaves organisms in such communities highly susceptible to…

Answer 22

Any alteration of the ecosystem, like human incursion, decoration, and global climate change
Extinction

Question 23

Which of the following can contribute to density-dependent regulation of populations?

Answer 23

Intraspecific competition for nutrients

Question 24

Which of the following are important abiotic factors that can affect the structure and organization of biological communities?

Answer 24

Precipitation, wind
Nutrient availability, soil pH
Temperature, water
Light intensity, seasonality

Question 25

Which of the following is true with respect to oligotrophic lakes and eutrophic lakes?

Answer 25

Oligotrophic lakes are relatively high in O2 levels
Rates of photosynthesis are higher in eutrophic lakes initially as algal colonies grow
Eutrophic lake water contains higher concentrations of nutrients, especially N, P, K
Sediments in oligotrophic lakes contain low levels of decomposable organic matter
Sediments in eutrophic lakes contain high levels of decomposable organic matter

Question 26

What would be a likely entry for box A?

Answer 26

Fertilizers washed into the lake