Nervous System
What is a stimulus?
A change in the environment
What is the word equation for Aerobic Respiration?
Oxygen + Glucose --> Carbon Dioxide + Water
Which layer of the leaf contains the most chloroplasts?
Palisade Mesophyll
What are stem cells in a plant called?
Meristem Cells
What are the products of lipid digestion?
Fatty acids and glycerol
What area of the brain is associated with thermoregulation?
Hypothalamus
Why is Respiration an exothermic reaction?
Because it releases heat
What was the independent variable in the photosynthesis required practical?
The light's distance from the plant/Light intensity
List the 3 digestive organs that are involved with Bile. In order!
Liver, Gall Bladder, Small Intestine.
What is a convex lens used for?
To correct hyperopia/long sightedness.
Why do root hair cells have large amounts of mitochondria?
Because they require large amounts of energy for active transport of minerals.
(Have to mention active transport)
What is the word equation for photosynthesis?
Carbon Dioxide + Water --> Glucose + Oxygen
The pacemaker cells control the rhythm of the heart. Where are these cells located?
Right atrium
Why does the stomach contain hydrochloric acid?
To create the optimal pH/acidity for enzyme function
What do the two iris muscles do in response to dim light?
(need to correctly name them both too)
Circular muscles relax. Radial muscles constrict.
What is the balanced symbol equation for aerobic respiration?
C6H12O6 + 6O2 --> 6CO2 + 6H2O
Because carbon dioxide is a reactant of photosynthesis.
What would happen to a cell that is placed into a hypotonic solution?
It would swell up due to water moving into it via osmosis.
Explain the test method for a positive test for sugars in food.
(3 key points needed)
1. Benedict solution
2. Heat up mixture
3. Positive test = orange/red/brick red
What happens in the eye when we begin to look at something close up?
Need 3 points of information.
1. Cillary muscles contract.
2. Suspensory ligament relaxes.
3. Lens becomes thicker.
Why does animal respiration depend so heavily on plant photosynthesis?
Because the reactants of respiration are the products of photosynthesis.
Why is it called Photosynthesis?
Photo means light
Synthesis means creation of something
So it is the creation of glucose/food using light.
How do stomata in plants open?
1. Sunlight causes influx of potassium ions.
2. Which causes a concentration gradient for water to move into guard cells via osmosis.
What 3 adaptations of Villi make them efficient at absorbing nutrients.
1. Large Surface Area
2. Thin walls/diffusion distance
3. Rich/large blood supply.
(Need all 3 correct)