biology 1
This type of organism does NOT have a nucleus and membrane-bound organelles.
What is a prokaryote?
a movement of ions and other atomic or molecular substances across cell membranes without need of energy input
What is passive transport
____________is the splitting of the cytoplasm in cell division.
cytokinesis
During which stage in meiosis 1 does crossing over occur?
prophase 1
What is the purpose of DNA?
DNA contains the instructions needed for an organism to develop, survive and reproduce.
DNA sequences are converted into mRNA that are used to make proteins, which do most of the work in our bodies
A principal molecule for storing and transferring energy in cells
What is ATP?
What simple molecules are the basic units of proteins?
What are amino acids
ATP, NADPH and oxygen.
What are the products of the light reactions of photosynthesis?
What are the products of cellular respiration?
water and carbon dioxide
A long DNA molecule with part or all of the genetic material of an organism.
What is a chromosome
ALL cell types have these four features in common.
What are cytoplasm, DNA, ribosomes, and a cell membrane?
A biomolecule that serves as a fast source of energy?
What are carbohydrates
What is a nucleus and in what kind of cells is it found in?
A nucleus controls and regulates the activities of the cell and carries the genes. They are found in eukaryotic cells.
Human cells organize DNA into one or more of these linear structures that carry genetic material.
What are chromosomes?
This process produces four genetically unique cells, each with half the number of chromosomes as in the parent
meiosis
process by which organisms use oxygen to break down food molecules to get chemical energy for cell functions
What is cellular respiration
This type of reproduction involves two parents and offspring that are not genetically identical to either parents.
What is sexual reproduction?
Made of mostly phospholipids embedded with proteins, this flexible boundary separates life from nonlife.
What is the plasma membrane (cell membrane)?
What are the light reaction inputs for photosynthesis
Water, sunlight(light), NADP+ and ADP
What is active transport?
the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.
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 have sickle cell anemia?
25%