Explain what is meant by polar molecule

Describe three ways that biology has impacted the health of people around the world.

Consider a closed ecosystem which contains only mosquitoes and frogs. the mosquitoes feed on the blood of the frogs, and the frogs eat the mosquitoes. this ecosystem is impossible because:

A colony of red bacteria is allowed to reproduce for 16 generations. A scientist examines the colony at the end of this time and notes that all the individuals are almost identical in all characteristics. This evidence suggests that the bacteria

What are the two major steps in passing genetic information?

Environments are covered with manmade structures like roads, buildings, and sewers. Green spaces such as parks, backyards, and undeveloped lots are scattered in among the developed areas instead of all connected together.

An example of a parallel choice on a dichotomous key is

Describe one way the human respiratory system degrades over our lifespans, and explain one environmental condition that could cause an unnatural degradation as someone ages, including why that environmental condition harms their respiratory system.

Which is the mechanism by which improper excision of a prophage from a bacterial chromosome results in packaging of bacterial genes near the integration site into a phage head?

The tundra biome has extremely cold temperatures during much of the year and a hard sublayer of permanently frozen soil called permafrost. Which of the following adaptations would plants in the tundra most likely have? A.

When plants of a particular species are growing too close to each other, crowding may eventually lead to mortality, known as self-thinning. this type of mortality is density-dependent. oscillating. exponential. density-independent. random?