DNA is like the instruction manual for building and operating a cell.
Before a cell divides, its DNA is replicated (duplicated.) Because the two strands of a DNA molecule have complementary base pairs, the nucleotide sequence of each strand automatically supplies the information needed to produce its partner.
Answer: A) changing the rate at which greenhouse gases are released from Earth's surface into the environment.
Explanation: Without vegetation (For example trees) the rate at which greenhouse gases, like carbon dioxide, are released from Earth's surface into the environment would skyrocket. Vegetation uses carbon dioxide in photosynthesis and converts it into oxygen, helping to absorb some of the greenhouse gases that would otherwise accumulate in our atmosphere. It essentially reduces the rate at which greenhouse gases are released into our atmosphere.
If two heterozygous parents mate, the phenotypes of the resulting offspring will be 75% dominant and 25% recessive
What do the Gram stain, acid-fast stain, and endospore stain have in common?
A. used on a wet mount of the specimen
B. use heat to force the dye into cell structures
C. outcome based on cell wall differences
D. use a negative stain technique
E. are simple stains
Answer: Option C
Explanation:
The staining can be defined as a procedure which is carried out in order to make the study easy. As many of the bacterial species appear similar and are transparent so staining is done in order to see what bacterial species incorporates what color in them to make the study more easy.
Staining also depends on the type of chemicals present in the cell wall of the organism( cell wall composition). Different organisms have different staining techniques and stains by which they show color.
This ability tells alot about their characters. Like the fast stain bacteria are very hard to stain. They are mycobacterium on which normal stain do leaves any effect because of the cell wall composition. This property states that they are resistant to many of the chemicals . Likewise gram staining and endospore staining is also dependent on the type of chemical that is found in their cell wall.
Answer:
flower - reproduction
leaf - photosynthesis
stem - transport of water and minerals
root - absorption of water
Hope that helps.
