Answer:
A
Explanation:
Due to the hot weather the plants moisture start to decrease until they wilt.
<span>The
answer is metaphase. It is marked by the arrangement of chromosomes at the
center of the cell, half way between each of the mitoic spindle poles. Movement
is intermediated by the kinetochore microtubles, which push and pull on the
chromosomes to align them into what is called the metaphase plate. The chromosomes
on the metaphase plate are held there firmly by pushing and pulling forces from
the microtubules. Cells can stop in metaphase for days until the chromosomes
are properly aligned and the cell go in anaphase.</span>
Fatty acids are the building blocks of lipids
WHAT ARE LIPIDS?
- Lipids are one of the four major biological molecules in nature (the other three are proteins, carbohydrates and nucleic acids).
- Lipids are organic compounds that are generally characterized by their insolubility in water.
MONOMERS OF LIPIDS:
- Lipids, like every other biological molecule, are polymeric compounds i.e. they are made up of smaller monomeric units. The monomers that make up lipids are called FATTY ACIDS.
Therefore, fatty acids are the building blocks of lipids.
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38) I believe the correct answer would be letter D: ions are moved against the concentration gradient.
39) I believe the correct answer is letter A: the DNA information for development was silenced in differentiated cells. This is because the frog did not go through <span>embryonic development.</span>
Answer:
Presence of an enzyme
Explanation:
Enzymes are the biomolecules present in cells. The enzymes serve to catalyze the chemical reactions that occur inside the cells. Enzymes speed up the rate of the chemical reaction and allow the formation of products at a fast rate. This is done by lowering down the activation energy that is required to begin a chemical reaction. This energy breaks down the older bonds present in substrates so that new bonds can be formed. Enzymes lower down the activation energy to speed up the reactions.
