Review

• Crossing-over

  1. The exchange of genetic material between homologous chromosomes

  2. Occurs during the prophase phase of mitosis
• Metaphase

  1. Chromosomes align along a plate

  2. Plate is an imaginary plane equidistant between the two poles of the cell

  3. Alignment ensures each daughter cell will receive the correct number of chromosomes during cell division
• Mitosis is type of cell division result in the production of gametes
• In ecosystem producers trophic level contains organism that convert sunlight into chemical energy through the process of photosynthesis
• The primary source of energy for the most ecosystem on the earth is heat from the sun
• In a food web energy flow do arrows represent
• In a food chain trophic levels through successive move as it energy is decreases
• The unit of heat in the international system of units (SI) joules (J)
• The glass is an insulator
• When object balanced forces act on it it moves with constant velocity
• The net force acting on the object experiencing an object experiencing unbalanced force of 8 and to the right and 5 m to the left is 3n to the left
• The example of the unbalanced forces is a rocket launching into space
• The characteristic of a good conductor is high thermal conductivity
• Heat flows from region of higher temperature to the regions of lower temperature
• Energy transfer is best describes the relationship between trophic levels in an ecosystem
• Food web is used to describe a series of interconnected food chains in ecosystem
• Omnivore is used to describe an organism that feed on both plant and animal
• Organism can reproduce both sexually and asexually is plant
• Homologous chromosomes are pairs of chromosomes that carry the same genes inherited from each parent. Homologous chromosomes separate during anaphase 1
• A biological process by which new individual of a species are produced ensuring the continuation of the species is reproduction
• An egg cell units with a sperm cell to form a zygote is fertilization
• The primary reason for the typically large number of producers in an ecosystem compared to higher tropic level is they are more efficient at capturing energy from the sun
• When an object is unbalanced force act on it a celebrates in the direction of stronger force
• Balance forces result in no change in motion while unbalanced forces can cause acceleration