GOOD
Which organelle controls the activities of the cell?
Nucleus
What is the cell wall from plants made from?
Cellulose.
Hypotonic = more water/less solutes.
Hypertonic = more solutes/less water.
What is the difference between excretion and egestion?
- Excretion = removal of metabolic wastes.
- Egestion = removal of feces.
What happens to enzymes as you move away from the optimum pH?
They denature.
Group of different tissues working together to perform a particular function.
What is the cell wall of fungi made from?
Chitin.
Which kingdoms have eukaryotic cells?
Animals, plants, fungi, and protoctists.
What are autotrophs? What are heterotrophs?
- Autotrophs = make their own food.
- Heterotrophs = have to eat other organisms.
What are the monomers of proteins?
Amino acids.
Describe 2 differences between virus and bacteria.
- Virus are not made from cells (acellular).
- Viruses are smaller than bacteria.
- Viruses have genetic material that is either DNA or RNA. Bacteria's genetic material = DNA.
- Viruses have protein capsid/envelope (bacteria don't).
Which organelle exerts turgor pressure?
Permanent Vacuole.
There are two sides: A and B. B has more solutes. Which direction will water move.
Move to side B.
Which leaf layer has increased surface area for diffusion?
Spongy mesophyll layer.
What are triglycerides made of?
MRS C GREN.
Which organelle withstands internal pressure in the plant cell?
Cell Wall.
Define osmosis.
Moving from high water potential to low water potential through partially permeable membrane.
Describe surface area:volume ratio in multicellular and unicellular organisms.
Unicellular organisms = large surface area: volume ratio.
Multicellular organisms = small surface area: volume ratio.
What is the test for reducing sugars? What is the positive test result?
Benedict's solution (change to green/brick red).
What is homeostasis? Give an example.
Maintaining internal conditions in the body.
- Thermoregulation = maintaining constant body temperature.
Name a unicellular organism in fungi kingdom.
Yeast.
What is the balanced equation for photosynthesis?
6CO2 + 6H2O. -----------> C6H12O6+ 6O2
- light/chlorophyll on the arrow.
Describe how light intensity and carbon dioxide affect the rate of photosynthesis.
Light intensity = rate continues to increase until something else runs out.
Carbon dioxide = rate continues to increase until something else runs out.
What happens to the rate of photosynthesis as we go above the optimum temperature?
Enzymes denature > so rate of photosynthesis decreases > less sugar produced.