Introduction to Biology

Chemotaxis is the movement of organisms toward or away from chemicals, while phototaxis is the movement toward or away from light.

Single-celled organisms duplicate their DNA first, then the cell divides to form two new cells.

Homeostasis is the ability of an organism to maintain constant internal conditions.

<p>Macromolecules are large molecules formed by polymerization, combining smaller units called monomers.</p> Signup and view all the answers

<p>The four elements common to all living organisms are oxygen, carbon, hydrogen, and nitrogen.</p> Signup and view all the answers

<p>Order, sensitivity to the environment, and movement in response to stimuli</p> Signup and view all the answers

<p>In the last 200,000 years</p> Signup and view all the answers

<p>The study of living organisms and their interactions with one another and their environments.</p> Signup and view all the answers

<p>Zoology</p> Signup and view all the answers

<p>The study of the structure and function of microorganisms.</p> Signup and view all the answers

<p>Chemotaxis is the movement of an organism toward or away from chemicals. An example of an organism that exhibits chemotaxis is bacteria moving towards nutrients.</p> Signup and view all the answers

<p>Plants capture energy from the sun through photosynthesis and convert it into chemical energy in food.</p> Signup and view all the answers

<p>Organelles are small structures within cells that perform specific functions. Examples of organelles include mitochondria and chloroplasts.</p> Signup and view all the answers

<p>Macromolecules are large molecules formed by polymerization. They are different from regular molecules as they consist of many smaller units called monomers.</p> Signup and view all the answers

<p>The four elements common to all living organisms are oxygen, carbon, hydrogen, and nitrogen. These elements form the fundamental components of nucleic acids, proteins, carbohydrates, and lipids.</p> Signup and view all the answers