Biology Answers

Which statement explains the most realistic way to model energy flow in an ecosystem?

1. A food chain is most realistic because many organisms eat one type of food, and energy moves through a single pathway
2. A food chain is most realistic because many organisms eat a variety of foods, and energy moves through different pathways
3. A food web is most realistic because many organisms eat one type of food, and energy moves through a single pathway
4. A food web is most realistic because many organisms eat a variety of foods, and energy moves through different pathways

The energy provided by the sun is captured in the cells of this organism.

• Algae
• Shrimp
• Bacteria
• Water

This organism helps other organisms in multiple ways because of its outputs from cellular respiration and digestive waste.

• Algae
• Shrimp
• Bacteria
• Water

Which of the following statements is TRUE about energy in an ecosystem?

• Energy can be recycled in the same way as matter
• All energy disappears from the Earth when used, which is why we need the sun
• Every 1 pound an organism consumes creates about 10 pounds of biomass for the next organism
• About 10% of energy in living things is transferred to the next living thing when eaten

Which statement best reflects what would most likely happen if shrimp were removed from the ecosphere?

• Everything would die
• Bacteria would experience an exponential increase in population
• Bacteria and algae would both decrease, and the water would become dirty
• Algae population would increase until it reaches its carrying capacity

What statement is most true about MATTER in the ecosphere?

• It must be continuously supplied from the outside
• It is constantly being cycled within the ecosphere by the inputs and outputs of each organism
• It is cycled within the ecosphere, but organisms aren’t involved - it’s only from the environment
• It is being cycled both in and out of the ecosphere

• True/False: If autotrophs were destroyed, it would not have as great of an effect on the food web because heterotrophs would have more food for themselves.

How do skin cells replace itself after an injury?

You have access to the sequence genomes for moss and the lycophyte

Selaginella. Your goal in analyzing the data is to write a ground-breaking paper that

answers an important question about the evolution of plants. What questions

would you try?

Definition of mendalslaw, monohybridcrossing,dihybridcrossing

punot squares incomplete dominance cod inaction

multiple allele

How might your senses help in the diagnosis of urinary system conditions?