A very useful term to describe Bacteria that can't synthesize their own food energy is called a Heterotroph. A Heterotroph relies on other organisms for nutrition, whether plant or animals. There are two types of Heterotrophs: <em><u>Photoheterotroph</u> and <u>Chemoheterotroph.</u></em><em><u /></em><u /> Photoheterotrophs use light for energy,but can't use carbon dioxide as their carbon source. They get their carbon from compounds such as carbohydrates, fatty acids, and alcohol. Chemoheterotrophs get thteir energy by oxidation of preformed organic compounds such as animals, fungi, bacteria and almost all pathogens.
Answer:
a. two plant species flowering at different times.
Explanation:
<em>The only option that is not a post-zygotic reproductive isolation mechanism would be option a, when two plant species flower at different times.</em>
Post-zygotic reproductive isolation mechanisms are those mechanisms that act to ensure that the product of fertilization remains invalid. This is as opposed to pre-zygotic isolation mechanisms that act to prevent fertilization and hence, formation of zygotes.
In option b, c, d and e; the zygote has been formed already and all the forces are just acting to ensure that it remains invalid. whereas in option a, there is no fertilization yet.
<u>Two plant species flowering at different times will ensure that there is no cross pollination between the two species. Without pollination, there cannot be a zygote formation.</u>
Hence, the correct option is a.
The answer is A.
the researchers would not be able to compare the samples and cut the DNA when samples from the waterway are not collected.
Answer:
This question is asking for the polymer and monomer of nucleotide and protein respectively.
The answer is:
Protein - monomer is AMINO ACID
Nucleotide - polymer is NUCLEIC ACID
Explanation:
There are four major biological molecules found in nature namely: protein, carbohydrates, fats and oil, nucleic acid. These biological molecules are, however, complex and polymeric in nature and like every other polymer, they must contain monomers that make up their structure.
- PROTEINS are made up of monomers called AMINO ACIDS.
- CARBOHYDRATES are made up of monomers called MONOSACCHARIDES.
- LIPIDS are made up of monomers called FATTY ACIDS.
- NUCLEIC ACIDS are made up of monomers called NUCLEOTIDES.
