Question 1

Which of the following best illustrates the biological theme of 'structure and function' as described in the study materials?

Accepted Answer

The similarity in molecular composition between insect exoskeletons and plant cellulose, despite their different roles.

Question 2

Which equation correctly represents the exponential growth of a population under ideal conditions?

Accepted Answer

$$G = rN$$

Question 3

A population of deer in a forest is limited by the availability of food and nesting sites. Which type of population regulation is this an example of?

Accepted Answer

Density-dependent regulation

Question 4

Which of the following is NOT one of the seven properties of life described in the study materials?

Accepted Answer

Photosynthesis

Question 5

Which of the following statements about the Central Dogma of Molecular Biology is correct?

Accepted Answer

Information flows from DNA to RNA to protein.

Question 6

Which survivorship curve is most likely to be observed in large mammals that produce few offspring but provide extensive parental care?

Accepted Answer

Type I

Question 7

Which of the following best describes an emergent property?

Accepted Answer

A property that arises from the interaction and arrangement of parts within a system, such as life emerging at the level of the cell.

Question 8

Which of the following is a correct statement about the three domains of life?

Accepted Answer

Bacteria and Archaea are both prokaryotic, while Eukarya includes all eukaryotic organisms.

Question 9

Which of the following best explains why tropical rainforests are not ideal for long-term agriculture after being cleared?

Accepted Answer

Nutrients are quickly washed away or taken up by trees, leaving the soil poor.

Question 10

Which process is illustrated by the following sequence: Population with varied inherited traits → Elimination of individuals with certain traits → Increasing frequency of traits that enhance survival?

Accepted Answer

Natural selection

Question 11

A scientist observes that a certain species of fish only survives in water with high oxygen content. Which abiotic factor is most likely limiting the distribution of this species?

Accepted Answer

Oxygen availability

Question 12

Which of the following equations describes logistic population growth?

Accepted Answer

$$G = rN \left(\frac{K-N}{K}\right)$$

Question 13

Which of the following is an example of an adaptation to a biotic factor?

Accepted Answer

Specialized teeth in pronghorn antelope for eating grasses and shrubs.

Question 14

Which of the following best describes the role of decomposers in an ecosystem?

Accepted Answer

They return chemicals to the soil, making nutrients available to producers.

Question 15

Which of the following is a characteristic of prokaryotic cells?

Accepted Answer

They lack a membrane-bound nucleus.

Question 16

Which of the following best explains why the carrying capacity ($$K) of an $$environment is not a fixed value?

Accepted Answer

It can change with environmental conditions such as resource availability and climate.

Question 17

Which of the following is an example of a density-independent factor affecting population growth?

Accepted Answer

A severe drought reducing water availability for all individuals.

Question 18

Which of the following best describes the concept of population momentum?

Accepted Answer

Population growth continues even after birth rates decline due to a large number of individuals in reproductive age.

Question 19

Which of the following is a correct statement about the flow of energy and cycling of chemicals in an ecosystem?

Accepted Answer

Energy flows through an ecosystem and is eventually lost as heat, while chemicals are recycled.

Question 20

Which of the following is a real-world example of the application of Mendel’s law of independent assortment?

Accepted Answer

A pea plant with yellow, round seeds can produce offspring with green, wrinkled seeds.

Unit 1 (1,34,36,37)

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