Chloroplasts and mitochondria
are subcellular bioenergetic organelles with their own genomes and genetic systems. DNA replication and transmission to daughter organelles produces cytoplasmic inheritance of characters associated with primary events in photosynthesis and respiration.
What is the function of a vacuole?
A vacuole is a membrane-bound cell organelle
Do vacuoles DNA?
B is correct. Although the nucleus is similar to a vacuole,
it is the organelle that contains the DNA
. … A and C are both functions of a vacuole.
What organelle does not contain DNA?
Lysosomes and Vacuoles
do not have DNA.
What is the role of vacuole in plant cell?
A vacuole is a membrane-bound cell organelle
Which has own DNA?
Mitochondria
are structures within cells that convert the energy from food into a form that cells can use. … Although most DNA is packaged in chromosomes within the nucleus, mitochondria also have a small amount of their own DNA. This genetic material is known as mitochondrial DNA or mtDNA.
Does ribosome contain DNA?
Ribosomes do not contain DNA
. Ribosomes are composed of 2 main sub-units – the large subunit joins together the mRNA and the tRNA forming polypeptide chains whereas the smaller RNA subunits reads RNA. … DNA is seen in the nucleus, chloroplasts of a cell and mitochondria.
Is DNA an organelle?
The three organelles that contain DNA are
the nucleus, mitochondria and chloroplasts
. … The nucleus is the control center of the cell, and houses genetic information.
Do lysosomes have DNA?
No, lysosomes lack DNA
. Lysosomes are referred to as suicide bags of the cells, they have proteins breaking down the waste. Lysosomes have close to fifty different degradative enzymes which can hydrolyze RNA, proteins, DNA, lipids, and polysaccharides.
Do all organelles contain DNA?
| Type of DNA Organism size in base pairs | chloroplast DNA green alga 180 x 10 3 |
|---|
Where is the vacuole located?
Vacuoles are distributed
throughout the cell’s cytoplasm
. Most are spaced equidistantly between the cell membrane, the nucleus, and the cell’s other large organelles.
What are two functions of a vacuole?
The main functions of vacuoles include
maintaining cell acidity and turgor pressure
, regulating the storage and transport of substances, controlling the transport and localization of key proteins through the endocytic and lysosomal-vacuolar transport pathways, and responding to biotic and abiotic stresses.
Why do plant cells have large vacuoles?
Vacuoles are membrane-bound sacs within the cytoplasm of a cell that function in several different ways. In mature plant cells, vacuoles tend to be very large and are
extremely important in providing structural support
, as well as serving functions such as storage, waste disposal, protection, and growth.
Do all humans have the same mitochondrial DNA?
They point out that although
all humans alive today have mitochondrial DNA passed on from
a common ancestor—a so-called Mitochondrial Eve—this is just a tiny fraction of our total genetic material.
What DNA is Heteroplasmic?
Mitochondrial DNA
(mtDNA) mutations that have occurred within approximately three human generations are usually heteroplasmic, and the same cell can contain varying proportions of mutated and wild-type mtDNA.
What does DNA actually code for?
The DNA code contains
instructions needed to make the proteins and molecules essential for our growth, development and health
. DNA
?
provides instructions for making proteins
?
(as explained by the central dogma
