BIOA01H3 Chapter 2: BIOA01 Chapter 2 notes

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ochregiraffe543

14 Apr 2012

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Seven characterizes that all forms of life share: display order: All forms of life are arranged in a highly ordered manner, with the cell being the fundamental of life: harness and utilize energy: All forms of life acquire energy from the environment and use it to maintain their highly ordered state: reproduce: All organisms have the ability to make more of their own kind. Organisms can make adjustments to their structure, function, and behaviour in response to changes to the external environment. Example: plant can adjust the size of the pore of leaf surface to regulate gas exchange: exhibit homeostasis: Organisms are able to regulate their internal environment such that conditions remain relatively constant. Example: sweating is a way the body attempts to remove heat to maintain constant temperature: growth and development: All organisms increase their size by increasing the size and/or number of cells. Many organisms also change overtime: evolve:

Related Questions

part 1

Homeostasis: Response to Stimuli

From the examples below, select the examples of cells or organisms responding to stimuli in order to maintain homeostasis.

1.)A plant bending toward a light source

2.)A cell bursting because it takes up too much water

3.)A person shivering when their body temperature is low

4.)A unicellular organism beating microscopic hairs to escape a chemical pollutant in its environment

5.)A cell dying due to a chemical poison

6.)An animal growing larger

7.)Ants moving within their mounds depending upon the time of day

8.)Iguanas laying in the sunlight if their body temperature is low

9.)Birds migrating when seasons change

10.)A person or animal getting sick because of infectious bacteria

part2 fill in the blank

A state of biological balance, or ____________ , is important for the survival of individual cells and ____________ alike.

Physiological factors such as ____________ , water levels, and pH must remain within a certain ____________ for cells and organisms to remain healthy and functional.

Regulation of the ____________ environment of cells and organisms is carried out through ____________ and other control ____________ .

choice of words:

location

external

hormones

mechanism

homeostasis

internal

groups

feedback

oganisms

temperature

range

In order to survive in a constantly changing environment, the aerobic metabolism of organisms must be tightly regulated to maintain a constant state of homeostasis. List and explain one way that aerobic metabolism is regulated within cells.

goldbeaver376

what do the regulatory mechanisms of the body do? a) maintain absolute constancy of the internal environment b) function to accelerate changes in the internal environment c) operate independently of the internal condition of the body d) work to maintain a dynamic constancy of the internal environment

BIOA01H3 Chapter 2: BIOA01 Chapter 2 notes

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