<span>Proteins are large bio-molecules that contains
one or more long chains of amino acid remains. Its source is meat, poultry, seafood
and such; the amount of protein that is recommended for the endurance of
athletes on a relative basic is 1.2-1.4 grams per day.</span>
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Answer:
When the required direction of transport is opposed to concentration levels, a cell <u>will </u> expend energy to force<u> ions</u> across its membrane.
Explanation:
If the concentration gradient is opposite to the direction of transport of minerals, then the cell will use energy to transport mineral ions from a lower concentration to a higher concentration. The most common process through which this happens is termed as the active transport.
The process of active transport is opposite to passive transport. In passive transport, molecules move from a higher concentration to a lower concentration.
Answer:
1 True 2 false 3 false 4 true 5 true
Explanation:
1 The Lac I gene makes repressor protein True
2 The structural genes encoded by lac operon are involved in lactose synthesis false
3 The CAP protein is an activator protein that binds to the operator false
4 The product of Lac I is an allosteric protein that can undergo conformational change when allolactose binds to it True
5 CAP binding causes DNA to bend facilitating RNA polymerase binding True
Answer:
The question: Do mice live longer when they are fed high sugar diets?
Hypothesis: There are two hypothesis the null hypothesis which we assume is correct, it states that a high sugar diet will have no effect on the life span of a mouse and an alternate hypothesis that we accept if evidence shows that sugar does increase the life span if mice. It says a high sugar diet does incerease the life span of mice.
Prediction: Assume that the null hypothesis is correct. High sugar diets will not increase the life span of the mice.
Collect data through experimentation. Use some mice as a 'control'. These mice will not undergo any changes but will be kept for comparison. Expose some other mice to high sugar diets and the compare the outcome with the 'control' mice.
Analyzing: From the experiment this you can choose which hypothesis you are going to accept. I.e. null: no change or alternate: there was a change and do some extra research to back up your hypothesis.
Hope this helps :)
