B1 + B2

B1 (7 Life processes)

Movement

Reproduction

Sensitivity

Respiration

Growth

Excretion

Nutrition

Action or part of organism change in position/place

Chem reactions in cells that break down nutrient molecules and release energy

To detect and respond to change in environment

Permanent increase in size

Process making more of same kind of organism

removed of waste products of mentabolism

Taking in of materials for energy, growth + development

B2.1 (Structure of plants

Cell wall (plant only)

Structure + support, provides shape of cell

Cell membrane

Allows material to enter and exit cell

Nucleus

control center and control genetic material

Vacuole

stores water (large in plants, small in animals)

Chloroplasts (plants only)

Produce glucose + photosynthesis

Mitochondria

break down glucose into carbon dioxide for energy

Diagram of animal cell, plant cell

B2.2

Cell structure

Ciliated cells

Root hair cells

Red blood cells

Sperm and egg cells

Carry oryxgen

Movement of mucus in trachea and bronchi

Absorption

Reproduction

Palisade mesophyll cells

Photosynthesis

Diffusion

If organism have some/carries out some, but not all, cannot be considered alive, non living things are NEVER ALIVE

Calculate magnification.

Magnification = image size (with ruler) / actual size (According to scale bar)
Actual size = Image size (with ruler) / magnification

  • Net movement of particles
  • from region of higher concentration to lower concentration
  • down a concentration gradient
  • as a resultant of random movement

Factors affecting diffusion

Surface area increase

Temp increase

Diffusion increase

Diffusion increase

Concentration gradient increase

Diffusion increase

Diffusion distance increase

Diffusion decrease

Substances move in and out of cells by diffusion through cell membrane

Osmosis

Water moves in and out of cells by osmosis through cell membrane

Water diffuses through partially permeable membrane by osmosis

  • Net movement
  • of water molecules from region of higher water potential (dilute solution) to region of lower water potential (concentrated solution)
  • through a partially permeable membrane