BIO 141 Common Assessment Questions and Answers | Latest Update | 2024/2025 | 100% Verified
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BIO 141 Common Assessment
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BIO 141 Common Assessment
BIO 141 Common Assessment
Questions and Answers | Latest Update |
2024/2025 | 100% Verified
What is the process by which cells communicate with one another using signaling molecules?
Cells communicate through signal transduction pathways, utilizing hormones and
neurotransmitters to rela...
BIO 141 Common Assessment
Questions and Answers | Latest Update |
2024/2025 | 100% Verified
What is the process by which cells communicate with one another using signaling molecules?
✔✔ Cells communicate through signal transduction pathways, utilizing hormones and
neurotransmitters to relay messages and coordinate responses.
How does the arrangement of amino acids in a protein affect its final structure?
✔✔ The specific sequence of amino acids determines how a protein folds into its three-
dimensional structure, which is crucial for its functionality.
What adaptations do aquatic plants have to photosynthesize efficiently under water?
✔✔ Aquatic plants often have flattened leaves to capture more light and specialized gas
exchange structures to facilitate buoyancy and photosynthesis.
What is the primary role of the nucleolus within the nucleus of eukaryotic cells?
✔✔ The nucleolus is responsible for synthesizing ribosomal RNA (rRNA) and assembling
ribosomes, which are essential for protein synthesis.
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, How does the structure of the alveoli facilitate gas exchange in the lungs?
✔✔ Alveoli have thin walls and a large surface area, allowing for efficient diffusion of oxygen
and carbon dioxide between the air and bloodstream.
What role do the different types of RNA play in protein synthesis?
✔✔ Messenger RNA (mRNA) carries the genetic code from DNA, transfer RNA (tRNA) brings
amino acids to the ribosome, and ribosomal RNA (rRNA) forms the core of the ribosome.
What mechanisms do cells use to maintain osmotic balance in varying environments?
✔✔ Cells utilize osmoregulation, employing processes such as active transport and the opening
and closing of aquaporins to manage water and solute concentrations.
What is the significance of telomeres in cellular aging?
✔✔ Telomeres protect the ends of chromosomes from deterioration and prevent fusion with
other chromosomes; their shortening during cell division is associated with aging.
How do plants adapt their stomatal openings to minimize water loss during drought conditions?
✔✔ During drought, plants can close their stomata to reduce water loss, while still allowing for
gas exchange, utilizing abscisic acid as a signaling molecule to trigger this response.
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