Question

1. you respond automatically to many different stimuli, such as a car honking. why might a quick response to a sound be important?
2. in the reading, it discusses homeostasis at the level of an organism. do you think homeostasis is necessary at the level of a single cell? explain.
3. dna evidence shows that whales and hippos are closely related organisms. how might evolution and adaptation account for the similarities and differences between them?
4. all organisms share certain characteristics. circle the characteristics that are shared by all living things and cross out the characteristics that are not. needs sunlight made up of one or more cells needs energy needs sleep can reproduce feels pain reacts to the environment has dna

Explanation:

Question 5:

A quick response to a sound like a car - honking can be important for safety. It allows organisms to react promptly to potential threats or important signals in their environment, which can increase their chances of survival.

Question 6:

Homeostasis is necessary at the single - cell level. Single - cells need to maintain a stable internal environment for proper functioning of enzymes and biochemical reactions. For example, they need to regulate ion concentrations and pH levels.

Question 7:

Evolution and adaptation can account for similarities and differences between whales and hippos. Similarities are due to a common ancestor, from which they inherited certain genetic traits. Differences are a result of adaptation to different environments over time. Whales adapted to an aquatic environment, while hippos adapted to semi - aquatic environments.

Question 8:

Shared characteristics: Made up of one or more cells, Needs energy, Can reproduce, Reacts to the environment, Has DNA.
Not shared characteristics: Needs sunlight (some organisms like deep - sea bacteria don't), Needs sleep (not applicable to single - celled organisms), Feels pain (not applicable to simple organisms like bacteria).

Answer:

Question 5:

A quick response to sound is important for safety and survival as it helps in reacting to threats or signals.

Question 6:

Yes, homeostasis is necessary at the single - cell level to maintain stable internal conditions for biochemical reactions.

Question 7:

Similarities are from a common ancestor, and differences are due to adaptation to different environments.

Question 8:

Circle: Made up of one or more cells, Needs energy, Can reproduce, Reacts to the environment, Has DNA.
Cross out: Needs sunlight, Needs sleep, Feels pain.