Cnidarians were the first phylum that scientists saw tissue level organization in. Tissue level organization meaning cells all of one type start to function in a unified way.
During human gestation, rudiments of all organs develop in the first trimester.
<h3>What is the first trimester?</h3>
- Most people (including your doctors and midwives) divide a full-term pregnancy, which lasts about 9 months, into three 'trimesters'.
- The first trimester of pregnancy is measured from the first day of your last period to week 12, even though you are pregnant from the moment of conception, when a male sperm fertilizes your ovum (egg), when you become pregnant.
- This is so that the majority of women who conceive naturally won't be aware of the conception date.
- Because the changes that occur to you and your unborn child fall into the three general categories of early, middle, and late pregnancy first, second, and third trimesters are a useful way to think about pregnancy.
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It refers to the idea the prehistoric oceans combined with lightning formed the building blocks of life.
Explanation:
The primordial soup refers to the idea that prehistoric oceans combined with lightning to form the building blocks of life.
The soup can be regarded as the soup of life through which the first nuclei acids were synthesized.
- It was a hypothesized set of conditions available when the earth was initially formed about 4.5 billion years ago.
- The miller-urey experiment was set up in 1930's to demonstrated this soup of life.
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Answer
An acid that breaks down completely and gives off many ions, or protons, is considered to be a strong acid. ex H₂SO₄
If you place strong acid into water it dissociate acid into H⁺ ions
Water is polar solvent(H⁺ and OH⁻), which has partial positive charge on one side and partial negative charge on the other side.
Strong acids readily dissociate in polar solvents to give H+ ions.
Where as Oil is a non polar solvent it has same charge all over so no dissociation of strong acid will take place.
Answer: the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.
Explanation:
Requires energy input from a cell and enables A cell to move a substance against its concentration gradient