Biology Keystone Module 2

What is the role of ribosomal RNA (rRNA)?

• It carries genetic information from DNA to the ribosome.

• It is a type of RNA that helps in the synthesis of proteins by forming the ribosome.

• It catalyzes biochemical reactions in the cell.

• It is involved in the transport of amino acids to the ribosome.

What is complementary base pairing in DNA?

• Adenine (A) pairs with cytosine (C), and thymine (T) pairs with guanine (G).

• Adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G).

• Adenine (A) pairs with guanine (G), and thymine (T) pairs with cytosine (C).

• Cytosine (C) pairs with thymine (T), and adenine (A) pairs with guanine (G).

What is the process of DNA replication?

• DNA replication is the process by which a cell makes an exact copy of its DNA before cell division, involving unwinding the double helix and synthesizing new strands.

• DNA replication is the process of breaking down DNA into smaller fragments for analysis.

• DNA replication is the method by which RNA is synthesized from a DNA template.

• DNA replication is the process of repairing damaged DNA strands.

What are homologous structures?

• Anatomical features in different species that share a common ancestry, even if they have different functions.

• Structures that are similar in function but not in structure across different species.

• Features that arise from convergent evolution and serve similar purposes.

• Anatomical features that are identical in structure and function across different species.

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What is the significance of the original DNA strands during replication?

• They are discarded after replication is complete.

• They serve as templates for the synthesis of new complementary strands, ensuring that the genetic information is accurately copied.

• They are responsible for the mutation of DNA sequences.

• They help in the repair of damaged DNA strands.

What is the function of messenger RNA (mRNA)?

• It serves as a template for protein synthesis, carrying the genetic information from DNA to the ribosome.

• It helps in the replication of DNA during cell division.

• It acts as a structural component of ribosomes.

• It transports amino acids to the site of protein synthesis.

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What is a community in ecology?

• A community is a group of different species that live together in a specific area and interact with each other.

• A community is a single species that dominates a specific area.

• A community is a collection of abiotic factors in an ecosystem.

• A community is a random assortment of organisms that do not interact.

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What is the importance of studying genetics in biology?

• It helps in understanding the structure of cells.

• It is crucial for understanding heredity, variation, and the molecular basis of diseases, as well as for advancements in biotechnology and medicine.

• It focuses solely on the classification of organisms.

• It is mainly concerned with the study of ecosystems.

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What is an ecosystem?

• A community of living organisms interacting with their physical environment, including both biotic and abiotic components.

• A group of similar organisms that can breed and produce fertile offspring.

• A large area characterized by its vegetation, soil, climate, and wildlife.

• A system of interconnected food chains and food webs.

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What is a population in biological terms?

• A group of individuals of different species living in the same area.

• A group of individuals of the same species that live in a specific area and can interbreed.

• A collection of organisms that cannot interbreed.

• A random assortment of organisms in a habitat.

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