1A: Intro to Bio
1B: Mitosis
1C: Cell Differentiation
1D: Homeostasis
Organ Systems
100
Give an example of something that is biotic
Sunflower, dog, tree, etc.
100
What can happen when a cell's DNA is damaged? (two answers accepted)
Die (apoptosis) or cancer
100
All organisms begin as how many cells?
One
100
What does homeostasis mean?
same state of equilibrium
(maintaining stable internal conditions despite changing external conditions)
100
What organ system helps you digest and absorb nutrients from the food you eat?
Digestive system
200
Which needs more organization - unicellular or multicellular organisms?
Multicellular
200
What is the result of mitosis?
2 identical daughter cells
200
Why do hair cells and heart cells act and look so different if they both have the exact same DNA (instructions)?
certain genes are turned on or off
200
Give an example of the body maintaining homeostasis
Sweating when hot, shivering when cold, feeling thirsty after working out, urination (pee), pupils in eyes dilating or constricting
Also dogs panting or stomata opening and closing in plants
200
What organ system provides support to your body?
Skeletal system
300
What is one of the characteristics of all living things?
Made of cells, reproduces, grows and develops,
300
What is the purpose of mitosis?
To grow and repair
300
Multicellular organisms are more or less complex and more or less efficient than unicellular organisms?
More complex and more efficient
300
Why would the body need to increase heart rate and the rate of breathing?
During physical exercise
(the respiratory and circulatory systems to supply more oxygen and nutrients to the body)
300
What organ system helps your body move?
Muscular system
400
List the levels of organization from smallest (at the top) to largest (at the bottom).
Cell, tissue, organ, organ system, organism
400
A polar bear has 22 chromosomes in a fur cell. When the polar bear's fur cells divide to make new cells, how many chromosomes will be in each fur cell?
22
400
Why is a white blood cell and a liver cell different if they both contain the same DNA?
they express different genes
400
What is a segment of DNA that codes for a specific trait or characteristic?
a gene
400
The organ system that TRANSPORTS nutrients and gases (like oxygen and carbon dioxide) in the body is the what?
Circulatory (Cardiovascular) system
500
Are wood chips considered biotic or abiotic? Give 1 reason to back up your answer
Biotic - they are made of cells
500
Draw the end result of this cell going through mitosis.
500
Describe (give an example of) how a specific cell specializes to increase its efficiency in carrying out the tasks of life
Nerve cells are long and slender to transmit impulses
Red blood cells have a flattened shape to allow diffusion of materials to occur faster
The small intestine has villi to increase surface area for the absorption of nutrients
500
The stomata and guard cells help a plant regulate homeostasis. What is the difference in how desert plants and rainforest plants maintain homeostasis?
Desert plants close stomata during the hottest part of the day to prevent water loss while rainforest plants open their stomata much more with all the water
500
One type of organ system in the body that plays a role in gas exchange by bringing in oxygen and removing excess carbon dioxide from the body is the ___________ system.
Respiratory system