The cell
The movement of ions or molecules across a membrane from a region of high concentration to a region of low concentration.
Passive transport
____________is the splitting of the cytoplasm in cell division.
cytokinesis
Simple molecules that form the basic units of proteins.
amino acids
The formula for photosynthesis
6CO2 + 6H2O —> C6H12O6 + 3O2
If the producers contain 10,000 Kcal how much energy do the secondary consumers receive
100 Kcal
The concept that organisms who are the best suited to their environment will be the most successful
What is natural selection
The stage of meiosis that crossing over occurs in.
Prophase 1
Three sources of genetic variation in sexual reproduction.
crossing over, independent assortment, mutation, random fusion of gametes from different parents.
What are the products of cellular respiration?
water, carbon dioxide and ATP
The vascular tissue of plants is made up of the...
xylem and phloem
An organelle found in eukaryotes where protein is synthesised.
rough endoplasmic reticulum
The failure of homologous chromosomes or sister chromatids to separate properly during cell division (mitosis/meiosis).
non disjunction
The nucleic acid that carries amino acids to the ribosomes.
t-RNA
A biomolecule that serves as a fast source of energy?
What are carbohydrates
Any inherited trait that increases an organism's chance of survival is known as this.
An adaptation
The part of the cell where proteins and lipids are modified, packaged, and transported to their eventual destination.
Golgi body
The part of the cell cycle when most point mutations occur.
DNA replication occurs during the S-phase (synthesis phase) of the cell cycle.
The name given to a gradual change in the allele frequency in a population due to a chance catastrophic event.
Bottleneck effect of genetic drift.
During anaerobic respiration, humans break down glucose, without the use of oxygen, to create what three products?
lactic acid, carbon dioxide and ATP
The three organelles contained in a plant cell but not an animal cell
Cell wall, large permanent vacuole, chloroplast
The net movement of dissolved molecules through a semipermeable membrane along the concentration gradient.
Osmosis
The random arrangement of homologous chromosomes during meiosis I that results in gametes with unique combinations of alleles is called...
Independent assortment.
A newborn baby is diagnosed with Down Syndrome. His karyotype shows three copies of chromosome 21. The name given to having missing or extra chromosomes is a condition called what?
aneuploidy
The product of photosynthesis that is produced during the light phase.
oxygen
Sickle cell anemia is a recessive disease. If you cross two parents with the alleles Aa x Aa, what are the chances their children will be carriers?
50%