bio unit 7

Front

What are antifreeze glycoproteins (AFGPs) and their role in fish?

Back

AFGPs are proteins produced by certain fish species that prevent the formation of ice crystals in their bodies, allowing them to survive in freezing temperatures.

Front

What is natural selection?

Back

Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.

Front

Define genetic variability.

Back

Genetic variability refers to the diversity in gene frequencies within a population, which is crucial for evolution and adaptation.

Front

What is the significance of membrane-bound organelles in eukaryotic cells?

Back

Membrane-bound organelles allow for compartmentalization of cellular processes, increasing efficiency and specialization in eukaryotic cells.

Front

Explain the concept of artificial selection.

Back

Artificial selection is the intentional breeding of organisms with desirable traits by humans, leading to changes in the traits of the population over generations.

Front

What is the role of mitochondria in cells?

Back

Mitochondria are known as the powerhouses of the cell, as they produce ATP through cellular respiration, providing energy for cellular activities.

Front

What is the difference between genetic drift and natural selection?

Back

Genetic drift is a random process that can lead to changes in allele frequencies in a population, while natural selection is a non-random process that favors traits that enhance survival and reproduction.

Front

Define selective pressure.

Back

Selective pressure refers to environmental factors that influence the survival and reproduction of organisms, leading to evolutionary changes.

Front

What is the importance of ribosomes in cells?

Back

Ribosomes are essential for protein synthesis, translating messenger RNA (mRNA) into polypeptide chains, which then fold into functional proteins.

Front

What is the impact of high reproductive rates on bacterial evolution?

Back

High reproductive rates in bacteria lead to rapid population growth and increased opportunities for mutations, contributing to genetic diversity and adaptability.