Prokaryotes are single-celled organism that are the earliest and most primitive forms of life on earth.
what is a prokaryotic cell?
100
Plant cells DO NOT have:
Lysosomes, centrioles or cillia
Animal cells DO NOT have:
Cell walls, central vacuoles, plastids or chloroplasts
List the organelles that are NOT present in the plant and animal cell.
100
A.They both result in a net production of ATP and NADH.
B.They both require an net input of ATP.
C.They both result in a release of oxygen.
D.They both take place within the cytoplasmic matrix.
E.They are both carried out by enzymes located within an organelle matrix.
Which of the following statements is true about the Krebs (citric acid) cycle and the Calvin (light independent) cycle?
100
E. coli poisoning occurs when food, particularly meat, isn't cooked thoroughly enough.
how e.coli poisoning occurs
100
a ribosome is a small organelle consisting of RNA and protiens. it is critical in the processes of translation and gene expression.
What is the function of a ribosome?
200
Features of prokaryotic cells
- the cell wall
- the plasma membrane
- flagella
- ribosomes
- the nucleoid
What is the features of prokaryotic cell?
200
Both produce energy in mitochondria, though the 'ingredients' come from different sources.
Where is energy produced in the cell?
200
There are many differences between prokaryotes and eukaryotes, but the defining difference is the the membrane bound nucleus in eukaryotic cells (eukaryote is Greek for "true nucleus"). Prokaryotes lack a nucleus.
What is the difference between a prokaryote and eukaryote?
200
Bacteria come in all shapes and sizes. Bacterial cells tend to be about one tenth the size of a eukaryotic cell
What do bacteria look like?
200
When the DNA is being replicated during "S interphase
at what stage is a mutagenic agent most likely to damage the DNA?
300
the plasma membrane is just inside the cell wall and has a composition similar t the membrane of eukaryotic cell.
define the cell wall and plasma membrane
300
By means of cytolysis the cell is broke and genetic material is off. It occur in any cell. So animal as plant.
Which cells do cytolysis occur in?
300
Cilia
Lysosomes
DNA
None of the above
Which of the following can be found inside the nucleus?
300
The type of bacteria greatly depends on how fast it will reproduce. Some reproduce sexually which means it could take a while.
How quickly do bacteria reproduce?
300
A change in a sequence of DNA which either codes for, or regulates the expression of, a gene.
define the term gene mutation and explain how it results in an inborn error of matabolism
400
a cell without a membrane bound nucleus, like bacteria or archaea
which type of organism is classified as a prokaryote?
400
Leucoplasts are a category of plastid and as such are organelles found in plant cells. They are non-pigmented, in contrast to other plastids such as the chloroplast.
Does it have leukoplasts or chromoplasts?
400
Ribosome
Chloroplast
Lysosome
None of the above
Which cell organelle, responsible for helping build proteins, is also found in prokaryote cells because it is not surrounded by a membrane?
400
A bacteria will use its flagella to move in its environment. They must obtain food, break the food down, and protect themselves from their environment
How do bacteria take in their food?
400
The epithelial cells that line the inside of your cheeks, for example. These are constantly being sloughed off, and so there must be frequent mitotic cell division occurring to replace them.
name a cell type that continues to divide by mitosis throughout life
500
made of nucleotide which is 5 carbon sugar, phospahte group, and ring-shaped nitrogenus base
what do nucleic acids include?
500
In cell biology, an organelle is a specialized subunit within a cell that has a specific function, and is usually separately enclosed within its own lipid membrane.
Are they membrane bounded organelles?
500
a cell or organism composed of cells that have a membrane-bound nucleus and organelles (mitochondria, chloroplasts; see cell , in biology) and genetic material organized in chromosomes in which the DNA is combined with histone proteins.
What is a eukaryote?
500
The three main shapes for bacteria are coccus, bacillus, and spiral.
What are the three basic shapes of bacteria?
500
A protein is a polypeptide (a type of polymer, or macromolecule made up of repeating subunits) made of dozens or hundreds of amino acids bound together by covalent bonds.