Myoglobin & Adaptation in Semi-Aquatic Shrews

How does the altered tertiary structure of myoglobin in semi-aquatic shrews contribute to their adaptation to diving?

Which statement accurately describes the role of myoglobin in the adaptation of semi-aquatic shrews to their environment?

How might natural selection lead to the evolution of a higher myoglobin concentration in semi-aquatic shrews?

What is the most likely first step in the evolution of semi-aquatic shrews with increased myoglobin levels?

What evolutionary advantage does the altered tertiary structure of myoglobin provide to semi-aquatic shrews?

If a new species is introduced to pond A, and after some time, the 'n(n–1)' value for this species is calculated to be 56, what is the number of individuals, 'n', of this species?

Pond B contains two species of flowering plant: Juncus effusus and Polygonum amphibium. If one individual of each species was removed from pond B, how would the total n(n–1) value change?

Based on the data, which statement best compares the species diversity between pond A and pond B?

How would the value of total n(n-1) change in Pond A if eight further individuals of Lemna minuta colonised pond A?

Suppose a researcher observes that the population of Azolla filiculoides in pond A doubles each week. What would be the total n(n–1) value for Azolla filiculoides after 3 weeks, assuming the initial population is 5?

Shrews, moles, and hedgehogs share a common characteristic of being:

What is the primary basis for classifying shrews, moles, and hedgehogs into the same taxonomic group?

If a new species of mammal is discovered with a diet primarily consisting of insects, which taxonomic group would it most likely be classified into?

Considering the dietary habits of shrews, moles, and hedgehogs, which of the following habitats would likely support a diverse population of these mammals?

How does the classification of shrews, moles, and hedgehogs as insectivores reflect their ecological role?

Which anatomical adaptation would you expect to find in insectivorous mammals like shrews, moles, and hedgehogs?

If a population of shrews, moles, and hedgehogs experienced a significant decline in their insect prey due to pesticide use, what would be the most likely consequence?

How does understanding the taxonomic classification of animals, such as grouping shrews, moles, and hedgehogs together, aid in conservation efforts?

Which of the following best describes an ecological niche?

Shrews maintain a high body temperature and lose heat rapidly. Which adaptation of their lungs most effectively facilitates rapid oxygen uptake?

Which of the following is the most direct consequence of a shrew's high metabolic rate related to its body size?

Which of the following best describes biodiversity within a habitat?

If a population of shrews were introduced to an environment with a significant decrease in insect prey, what would be the most likely initial outcome?

Which of the following best explains why shrews need a constant, high supply of oxygen?

A habitat initially contains a high level of biodiversity. Which of the following environmental changes would most likely lead to a decrease in biodiversity?

Which cellular components listed are exclusively found in bacterial cells?

How might climate change, leading to warmer average temperatures, impact shrew populations in northern latitudes?

Bacteriostatic and bactericidal antibiotics are used to treat diseases caused by which type of organism?

Which of the following human activities generally leads to a decrease in the biodiversity of habitats?

Consider a habitat where several species of plants and animals coexist. Which of the following scenarios would most likely lead to an increase in the habitat's biodiversity?

What is the relationship between a shrew’s surface area to volume ratio and its heat loss?

A new drug inhibits the function of bacterial flagella. What is the most likely effect of this drug?

A conservationist is trying to restore a degraded habitat to increase its biodiversity. Which approach would give the best long-term results?

If scientists discovered a new species of shrew with significantly fewer alveoli in its lungs compared to other shrew species, what would be the most likely consequence?

A researcher discovers a new bacterial species that lacks a cell wall. Which antibiotic would likely be least effective against this species?

Which of the following characteristics is LEAST likely to contribute to the pathogenicity of a bacterium?

Which of the following is the least sustainable approach to managing human impact on a habitat to preserve its biodiversity?

A remote island's ecosystem is being threatened by a newly introduced disease that is decimating the population of a keystone herbivore. What action would, in the long run, be least effective in preserving the island's biodiversity?

A scientist is studying a bacterium and observes that it can survive treatment with lysozyme (an enzyme that breaks down peptidoglycan). What is the most likely explanation for this resistance?

A bacterial strain is found to be resistant to multiple antibiotics. Which mechanism is most likely responsible for this resistance?

Habitat fragmentation, where large habitats are divided into smaller, isolated patches, poses a significant threat to biodiversity. Which of the following strategies is most effective in mitigating the negative impacts of habitat fragmentation?

Which of the following structures is NOT directly involved in the survival and proliferation of bacteria during infection?