Why do plant cells have chloroplasts and cell walls?
the answer of this question is The cell wall surrounds the plasma membrane of plant cells and provides tensile strength and protection against mechanical and osmotic stress. and
this answer is for the cell wall
Answer:
0.5 or 50% = 2/4 First box on the bottom
Answer:
Zygote is a answer to the question of
If you do not perceive a color change, or the emission of light or heat, it is still possible a chemical reaction has taken place.
A chemical change involves a change in the composition of a substance. It leads to the rearrangement of atoms and formation of a new substance.
Some cues may help us to know when a chemical change has taken place such as;
- Change in color
- Formation of a solid
- Evolution of heat
- Evolution of a gas
It is possible for a chemical change to occur without noticing these cues. For instance, two colorless solutions may react with each other and the product of the reaction remains colorless.
In this case, there is no physical cue signifying that a chemical change has taken place even though it actually happened.
Learn more: brainly.com/question/6284546
Answer:
Cytosine nucleotides
Explanation:
In most organisms, the methylation of DNA exists in three different sequence motifs. These include: CG (or CpG), CHG or CHH (H represent A, T or C). In plants, cytosine can be methylated at CpG, CpHpG, and CpHpH regions (H represents any of these nucleotide A, T or C except guanine. DNA methylation is almost majorly found in CpG dinucleotides, with the cytosines on both strands usually always being methylated in mammals.
