Biology Quiz

Given the results of the experiment above and anticipating that most other enzymes in cows would respond in a similar manner, what would be an expected response for a cow whose body temperature was too high?

• Most of the enzymes in a cow would work better and the cow would have improved fitness

• The cow would thermoregulate and find ways to decrease their body temperature back to normal to improve enzyme function.

• The cow would try to maintain a lower than average body temperature because cow enzymes appear to function best when cooled.

• All of the above are likely responses for the cow.

Proteins are composed of amino acids. What is the most likely source for the organic molecules that the cow uses to synthesize their amino acids?

• Photosynthesis

• Primary consumption of proteins from other animals

• Primary consumption of plants rich in organic molecules.

• Cellular respiration.

What can be determined about the structure of DNA given the information in the table?

• Adenosine and guanine are in equal amounts across all species

• The relative amounts of adenine and thymine are typically equal in each species

• The relative amounts of guanine and cytosine are typically equal in each species

• Both B and C are correct

What can be concluded about the amino acid sequence of a protein that is synthesized by each of the organisms in the above table?

• The sequence in the yeast and e.coli would be the most dissimilar.

• Bats and humans would have the most related sequence of amino acids based on the table.

• The amino acid sequence would be the same in each of the species.

• There is not enough information to tell the amino acid sequence of any protein in the table

A patient asks a doctor why fevers (body temperatures raised above normal) are helpful during infections with bacteria. Which of the following responses could be given that is related to the findings of the catalase experiment?

• The increase in temperature helps to change the shapes of bacterial proteins and enzymes and decreases their effectiveness.

• Catalase works best at increased temperatures and has an antibacterial effect.

• The liver's primary function is to fight invasive bacteria.

• Ice and cold are effective at fighting fevers.

When comparing the effect of blue light to green light on the elodea plants, which of the following is a probable conclusion?

• Plants that absorb green light are likely to produce more chemical energy in the form of sugars because they produce fewer bubbles.

• Plants that absorb green light are likely to produce less chemical energy in the form of sugars because they produce more bubbles.

• Plants that absorb blue light are likely to produce more chemical energy in the form of sugars because they produce fewer bubbles.

• Plants that absorb blue light are likely to produce more chemical energy in the form of sugars because they produce more bubbles.

The teacher points out that the plants (elodea) in the experiment have the same DNA in each of their cells, but that some of the cells have differentiated to become leaf cells, some are located in the stem, and others still are part of the root system. How is this differentiation possible?

• Different cells in the same plant express different genes that allow for differentiation.

• Mutations happen quickly in plant cells

• Viruses invade plants and allow for different cells to behave differently

• Plant endosymbiosis allows for chloroplasts to change the morphology of the plant cells they invade, which allows for plant cell differentiation.

During a neonatal visit a family has learned that their future twins will both inherit a rare genetic defect. When might the mutation that caused this defect have occurred?

• During meiosis when the gametes (sperm and eggs) were first produced

• During DNA replication in the skin cells of the father before fertilization.

• In the maternal environment (womb) due to exposure to harmful chemicals

• Both A and C are possible.

Muscle tissue requires more ATP, uses more oxygen, produces more carbon dioxide, and has more nuclei than other cells/ tissues. The additional nuclei allow muscle cells to produce more proteins that the muscle needs for contraction. Which byproduct of the respiration described above is also part of the carbon cycle that allows plants to undergo photosynthesis?

• ATP

• Oxygen

• Nuclei

• Carbon Dioxide

A student wants to know the average height of basketball players in the 2003 NBA draft. They predict that the average height will be above 6 feet 5 inches. They select the first player taken in the first round and use that height (6 feet 9 inches) as their answer to the question. They conclude that the average height of all players in the draft are higher than 6 feet 5 inches and accept their original hypothesis. What is the issue with the interpretation or design of this experiment?

• Not enough data was collected to interpret an average for weight

• Not enough data was collected to interpret an average for height

• The hypothesis was incorrect

• The graph used for data analysis was the wrong the for the data presented