The lac repressor prevents the lac genes in the DNA of E. coli from being expressed most of the time. The answer to your question is A. I hope this is the answer that you are looking for and it comes to your help.
Answer:
Your answer would be A. GENES
Explanation:
Answer:
transport nutrients and water from below-ground tissues to above-ground tissues and grow taller.
absorb nutrients from the soil
Explanation:
The vascular tissues of plants is made of specialized conducting tissues the xylem and phloem.
This tissues form a continuous systems through the plant body and provide pathways for the transport of water, nutrients, signaling molecules and also provide support for plant body against mechanical stresses. The xylem transport water and nutrients from the roots to other parts of the plant while the phloem transport photosynthate the product of photosynthesis from the source where it is produced to other plant part.
Answer:
Because they are yet to perform photosynthesis, which requires sunlight
Explanation:
The leaves of plants are the site of a unique process called PHOTOSYNTHESIS. Photosynthesis is the process by which plants synthesize their food in form of glucose in the presence of sunlight. The glucose they synthesize is however, stored as STARCH (a carbohydrate polymer) in the leaves. This is why the leaves of a plant will naturally test positive for starch at certain times.
However, the leaves of plants will not test positive for starch early in the morning but do so at the end of the day because the leaves of that particular plant is YET to undergo photosynthesis due to lack of light from sun. However, at the end of the day, it would have performed photosynthesis and synthesize sugar and hence, test positive.
I believe the answer would be false.
