A food that is high in Calories and could be used for energy storage in animals is MOST LIKELY high in
lipids
100
Unlike other organelles, chloroplasts and mitochondria contain their own genetic information in the form of
DNA
100
Living cells use ____________ as their main source of energy
carbohydrates
100
_____are cellular macromolecules containing hydrogen, oxygen, nitrogen, carbon and phosphorous
nucleic acids
100
All BUT one of the following is a component of nucleic acids. Nucleic acids DO NOT contain
amino acids
200
____ fats, such as olive oil and sesame oil, are produced in plants and are liquid at room temperature
polyunsaturated
200
In cells, __________ are proteins that are needed to lower the amount of energy required to start chemical reactions
enzymes
200
How do enzymes speed up chemical reactions? Enzymes
lower the activation energy of chemical reactions
200
Lipids are important to living things for all of the following reasons, EXCEPT that they are
chained together to form proteins
200
Which statement best describes the composition and function of proteins in organisms
long chains of amino acids used for building, repair, and maintenance
300
Why will salivary amylase NOT break down proteins
Proteins will not fit into the active site of the amylase enzyme
300
Enzymes, such as the one shown in the picture, work by fitting onto the substrate molecule like a lock-and-key action. Which statement is true, with regard to the enzyme and the substrate
The substrate reacts with the enzyme in the active site to produce a product. Both the enzyme and the substrate combine and change into a product
300
The graph MOST LIKELY represents which type of relationship between the two fish species
competition
300
Animals store most of their excess energy reserves as _______ because
fat; they store twice as much energy per gram
300
The biomolecule described is a
lipid
400
The rapid growth of the human population during the last two centuries is INDIRECTLY responsible for which environmental concern, that in turn, will lead to future species extinction
decreased biodiversity
400
On a farm, there has been a sudden spike in the rodent population, causing an increase in crop damage and, as a result, loss of income. What practice might have contributed to the spike in the rodent population
hunting and killing snakes on farm
400
In the cell, which organelle has the function of using oxygen in the breakdown of glucose, releasing energy and carbon dioxide
mitochondria
400
The red-cockaded woodpecker is found in the pine forests of Georgia. It eats insects found in the barks of the pine trees and nests in the trees.
How will a reduction in the number of pine trees MOST LIKELY affect the red-cockaded woodpecker?
it will decrease in number
400
All the biological macromolecules contain Carbon, hydrogen and oxygen. However, most do not contain nitrogen. The category that contains nitrogen are
proteins
500
Fats are broken into saturated fats and unsaturated fats. Which of these explains the difference between saturated and unsaturated fats
Saturated fats have only single bonds on all the carbon atoms
500
One difference between carbohydrates and lipids is that
Carbohydrates will dissolve in water but not lipids