Q: Plasmodesmata and gap junctions are channels between adjacent cells of what respective types? Read this paragraph and choose the correct option from the provided answers: 4.6 Connections between Cells and Cellular Activities Animal cells communicate via their extracellular matrices and are connected to each other via tight junctions, desmosomes, and gap junctions. Plant cells are connected and communicate with each other via plasmodesmata. When protein receptors on the surface of the plasma membrane of an animal cell bind to a substance in the extracellular matrix, a chain of reactions begins that changes activities taking place within the cell. Plasmodesmata are channels between adjacent plant cells, while gap junctions are channels between adjacent animal cells. However, their structures are quite different. A tight junction is a watertight seal between two adjacent cells, while a desmosome acts like a spot weld. Choices: - healthy and sick - new and old - plant and fungus - plant and animal A:
plant and animal

Q: What type of archaea live in salty environments? Read this paragraph and choose the correct option from the provided answers: Archaea that live in salty environments are known as halophiles. Choices: - arthropods - sporozoans - amphibians - halophiles A:
halophiles

Q: Out of the four ways that allele frequencies of a population can be changed, which way is caused by individuals leaving or joining the population? Read this paragraph and choose the correct option from the provided answers: 11.2 Mechanisms of Evolution There are four factors that can change the allele frequencies of a population. Natural selection works by selecting for alleles that confer beneficial traits or behaviors, while selecting against those for deleterious qualities. Mutations introduce new alleles into a population. Genetic drift stems from the chance occurrence that some individuals have more offspring than others and results in changes in allele frequencies that are random in direction. When individuals leave or join the population, allele frequencies can change as a result of gene flow. Choices: - Allopatric speciation - spontaneous mutation - mass extinction - gene flow A:
gene flow