<h3><u>Answer;</u></h3>
A) Size: universe -> galaxy -> solar system
Number of objects: universe ->galaxy -> solar system
<h3><u>Explanation;</u></h3>
- <em><u>The relative size and relationship between the solar system, galaxy and universe is such that; universe is the largest, followed by the galaxy and solar system the smallest.</u></em>
- <em><u>Similarly in terms of the number of objects, objects in the universe are more compared to those of the galaxy and the solar system.</u></em>
- In a nut shell, universe refers to everything that exists, galaxies are giant structures that are made up of billion of stars. The universe is made up of billions of galaxies. A solar system is a region of space where the gravitational force of a star influences all the other objects.
Redi and Pasteur I believe
I’m pretty sure it’s C if not A
Animals can be classified according to different physical characteristics, such as body covering (e.g., hair, fur, feathers, scales, shells), body shape (e.g., two main features, three main features), appendages (e.g., arms, legs, wings, fins, tails), and method of movement (e.g., walking, crawling, flying, swimming).
Answer:
It decreases the levels of cAMP in the cell, repressing transcription from the lac operon.
Explanation:
When glucose is absent, cAMP serves as coactivator binds to CRP, the catabolite gene activator protein. The CRP-cAMP complex binds to the site near the lac promoter and stimulates the expression of the operon by RNA polymerase many folds.
Catabolite repression refers to inhibition of the synthesis of enzymes of lactose catabolism when glucose is present as an energy source. In the presence of glucose, synthesis of cAMP is inhibited resulting in its lower cellular concentration. The lower cAMP levels do not allow the binding of cAMP and CRP. The result is reduced expressed of lac operon.
