Answer: D. All living cells come from other living cells.
Explanation:
A is incorrect because organisms like bacteria and amoebas are unicellular, or have 1 cell.
B is incorrect because cells are specialized: nerve cells and muscle cells do not share the same function.
C is incorrect because inanimate objects are not alive and do not have cells.
D is correct because cells reproduce by mitosis, creating copies of themselves.
Answer: Substrate of Amylase enzyme is starch.
Explanation: Amylase enzyme is used to speed the chemical reaction of hydrolysing starch, a polymer of glucose, to maltose. Starch is a polysaccharide so basically the amylase enzyme breaks down this polysaccharide (many sugars) with the aid of water to disaccharide (two sugars).
When chromosomes do not separate during meiosis is called nonjurisdiction.
Sometimes during anaphase, chromosomes will fail to separate properly.
Answer:A, B and E
Explanation: lipid:fatty acid, protein: amino acid and carbohydrate: monosaccharides
(Did this in UsaTestPrep)
The answer is true.
DNA methylation is a process by which methyl groups are added to the DNA, more precisely to its nucleotides adenine or cytosine (they are methylated) via enzymes called DNA methyltransferases. This process as a result can change the activity of a DNA. For example, if DNA of gene promoter is methylated gene transcription is repressed. The opposite process is DNA demethylation.
So, DNA methylation is an epigenetic mechanism meaning that gene activity can be changed and inherited that way, but the sequence of DNA remains the same.
