Cell Reproduction
Humans have __ chromosome pairs.
What is 23?
Fill in the blank:
In nature, animals overproduce _______; the surviving _______ have variations.
What is offspring?
Can reproduce and produce fertile offspring.
What is species?
Fill in the blank:
_______ is also released as decomposers break down dead organisms and recycle them into the soil. ______ is released in animal urine and waste. Animals take in _______ from their food. The _______ is continuously recycled.
What is nitrogen?
Bones and their connections that allow movement.
What is the skeletal system?
Reproduction of somatic cells.
What is mitosis?
Fill in the blank:
Over time, variations can become ________.
What are adaptations?
Migration, mating dances, mating calls, mating seasons.
What are behavioral adaptations?
Fill in the blank:
_________ is used by plants for photosynthesis.
What is carbon dioxide?
Involves the mechanical and chemical breakdown of food so that it can be transported to the cells.
What is the digestive system?
Reproduction of gametes.
What is meiosis?
Theory of natural selection through survival of the fittest. Survival of the fittest doesn’t always mean the biggest and strongest survive. It’s which organisms that are best suited to survive in the environment.
What is Charles Darwin?
Chemicals, venom, antibiotic-resistant bacteria.
What are physiological adaptations?
Fill in the blank:
_______ can fix nitrogen to make it available for plants.
What is bacteria?
Involves the exchange of oxygen and carbon dioxide.
What is the respiratory system?
Includes interphase, mitosis, and cytokinesis.
What is the cell cycle?
Fossils, homologous (similar) structures, vestigial (no longer used) structures, DNA, Embryos
What is evidence of evolution?
Body parts- ex-shell, mimicry, camouflage.
What are structural adaptations?
Carbon is released during respiration, the burning of fossil fuels, the burning of trees, and as decomposers break down dead organisms.
What is the carbon cycle?
Involved in transporting oxygen and picking up carbon dioxide as waste. Also transports nutrients to the cells and picks up wastes.
What is the circulatory system?
Prokaryotes such as bacteria divide by the process of ___________.
What is binary fission?
The organisms with the best variations will __________.
What is "successfully reproducing and passing down these good traits"?
New species can develop as a result of:
1. physical separation of a species into two groups.
2. divergent evolution- one species divides into two.
1. What is geographic isolation?
2. What is adaptive radiation?
Nitrogen makes up most of the air (78%) it is not a usable form for plants.
What is the nitrogen cycle?
Involved in the production of hormones.
What is the endocrine system?