Topic 1
Which of the following would not be a characteristics seen in all living organisms?
A. Reproduction
B. Respiration
C. Excretion
D. Photosynthesis
D
A yeast, glucose and water are mixed in a test tube. Bubles of gas were visible after one hour later. Which process causes this change?
A. Reproduction
B. Respiration
C. Growth
D. Sensitivity
B
Which vertebrate group typically gives birth to live young?
A. Mammals
B. Birds
C. Amphibians
D. Reptiles
A
Which of the following terms would be correct to describe a leaf, a root and stem?
A. Cell
B. Tissue
C. Organ
D. Organ system
C
Which of the following orders would be correct showing the size of structures from biggest to smallest?
A. Chromosome -> Red blood cell-> startch -> gene -> nucleus
B. Stomach -> red blood cell -> gene -> chromosome
C. Stomach -> red blood cell -> nucleus -> chromosome -> gene
D. Gene -> chromosome -> red blood cell -> stomach
C
Diffusion. Water molecules in the gaseous state. **All gas molecules move by diffusion**
Which of the structures below is the best adapted for diffusion?
A. Ileum (small intestine - food absorption takes place)
B. Bronchioles (respiratory system)
C. Atria (Blood vessels for the heart)
D. Capillary (tiny blood vessels)
A
Which test requires a heating step to test for sugars in food?
Benedict's test for reducing sugars
Correctly label functions to below components in a root hair cell
A. Cell wall : __________
B. Cell membrane: __________
C. Mitrochondria : ____________
A. Cell wall : support
B. Cell membrane: active transport
C. Mitrochondria : energy release
Which cell layer has the highest concentration of oxygen on a bright, sunny day?
Palisade mesophyll cell which is where most photosynthesis takes place (due to palisade mesophyll cells having the highest concentration of chloroplasts). The more photosynthesis occurring, the greater the amount of oxygen produced as a waste product. Some oxygen will be used up by each type of plant cell in the process of aerobic respiration, but the amounts are similar in each type of cell.
Write an effect of deficiencies of essential mineral, magnesium, for plant growth
Yello leaves
Write an effect of deficiencies of essential mineral, nitrate, for plant growth
stunted growth
The statements below correctly describes the importance of osmosis in plant. Complete the fill in the blank.
Plants are supported by the pressure of water inside the cells pressing outwards on the ____ _____ (2 words) because:
When plant cells become _____, the cell membrane pushes against the cell wall, this _______ the turgor pressure providing strength and support.
cell wall, turgid, increases
A student made a drawing of a bacteria. The actual length of the bacterial cell is 2 micrometeres. State the other information that the student needs in order to calculate the magnification of the drawing in the diagram.
length of the drawing/image/diagram
State the name of the group of chemicals the yeast uses to catalyze the breakdown of glucose molecules.
Enzymes