Answer: Option E
Explanation:
During conducting the experiment, it was performed in control conditions. In this case the top predators were removed.
There were limited number of organism left at the place which compete with each other for the same resources.
Mussel and Barnacle were the two species left there which feed on the same resources for their needs. This is the reason there was loss of diversity.
Answer:
There are multiple answers for a strong or weak base
For a strong one, you can put sodium hydroxide
and for a weak one, you can put methylamine
what makes an acid or base weak or strong is if the acid or the base has a high conductivity of electricity
pH is the measurement of hydronium
You have to have both the pL promoter as well as a second system of the cI repressor which controls the pL promoter.
When the cI repressor is expressed it will bind onto the operator region of the pL promoter and prevent expression.
When the cI repressor is not expressed it can't bind to its operator and the pL promoter (which is very strong) can express whatever gene it is upstream of.
So you need to have both for transcriptional control. you don't need the rest of the phage!
Answer:
Double fertilization produces a diploid sporophyte and a triploid endosperm. (Ans. C)
Explanation:
Angiosperm are plants which is known for flowering plant on the earth. The flower is reproductive parts of the angiosperm plant. They are including 4 basic parts of the flower: Carpel, Stamens, Sepals and Petals.
During angiosperm plant reproduction, 2 structure are formed which are known as the Endosperm and a Zygote. Later a Zygote will grow and form a embryo and the endosperm is known for food source of plant embryo. Endosperm and Zygote forming process is known as double fertilization and it is a unique process found in angiosperms.
Steps involved in double fertilization are:
1) The pollen tube processing to release 2 sperm cells into an unfertilized ovule.
2) When one sperm cell fuses with the eggs to the formation of zygote and another sperm fuses with the 2 polar nuclei to the formation of endosperm this process is known as double fertilization.
3) After the completion of double fertilization, a fruit and seed develop.
Assuming both packages are the same size and shape, and neither will be affected by wind resistance, both packages will fall at the gravitaional constant of 9.86 m/s/s, and C) they will both strike the ground at the same time.
