A/an _____ is used to enlarge the opening of any body canal or cavity to facilitate the inspection of its interior.

My experiment is based on whether certain mice choose either cheddar cheese or bananas

Elenna [48]

Answer:

The independent variables would be the maze and the cheder cheese and banana the dependent variable would be the different mice

Explanation:

The food and maze doesn't change so this is independent

You are using different types of mice so this is dependent

Independent variables do not change

dependent variable do change and are dependent on the independent variable

Ex different mice(dependent) Like the (Independent) note the food you use does not change

8 0

3 years ago

Researchers isolated a yeast phosphofructokinase mutant in which a serine at the fructose-2,6-bisphosphate (F26BP) binding site

ivann1987 [24]

Answer:

Explanation:

a.

Phosphofructokinase-1, also known as the glycolysis stimulator, is among the most important glycolysis regulatory enzymes. It's an apoptotic enzyme with effectors (activators/inhibitors) that control its activity. Fructose 6-phosphate and ATP are converted to fructose 1,6-bisphosphate and ADP by PFK-1.

Suppose the serine in PFK's active site is substituted with aspartic acid, the enzyme's active site would be devoid of phosphorylation sites. The enzyme PFK contributes to the transferase family since it has kinase activity. It serves as an acceptor by transferring phosphorus groups to an alcohol group (serine).

Insulin stimulates protein phosphatase, which eliminates the phosphate group from the serine residue, stabilizing the kinase role and promoting F26BP formation. The phosphorylation reaction will not take place provided the serine is substituted with aspartic acid. Therefore, the PFK's kinase activity will be lost. Similarly, F26BP will not form PFK, and it will not be aborted in the future.

b.

Their decline reveals that:

F26BP increases the overall net flow of glucose by glycolysis modulates PFK production and induces Fructose 1,6 bis phosphatase, which also catalyzes the glycolysis reverse process.

Fructose-2,6-bisphosphate transcriptionally activates the rate-limiting process of glycolysis catalyzed by PFK 1.

Increased levels of Fru-2,6-P2 located in the liver raise PFK1's propensity and resistance for fructose 6 phosphate while lowering its affinity for its' inhibitors ATP and citrate.

Fructose 2,6-bisphosphate supersedes the inhibition of ATP and promotes greater sensitivity of the eukaryotes to be regulated by hormones (glucagon and insulin).

8 0

3 years ago

How are dna and rna molecules alike?

ryzh [129]

B). They both contain nitrogenous bases.

4 0

3 years ago

Read 2 more answers

Plz help i need the answers

Kipish [7]

Newton's universal law of gravitation states that all objects attract each other with a force directly proportional to their masses and inversely proportional to the square of the distance between their centers. When considering objects on the surface of the Earth, the force is directly proportional to the product of the mass of the object and the acceleration due to gravity at the Earth's surface. Since the Earth is larger than any other object under consideration, the object is drawn toward the Earth.

Explanation:

The magnitude of the gravitational force between two objects is given by Newton's universal law of gravitation:

$F=G\frac{m_1 m_2}{r^2}$

where :

$G=6.67\cdot 10^{-11} m^3 kg^{-1}s^{-2}$ is the gravitational constant

m1, m2 are the masses of the two objects

r is the separation between them

This force is always attractive.

At the Earth's surface, this can be rewritten as

$F=mg$

with

$g=\frac{GM}{R^2}$

where M is the mass of the Earth, R is its radius, and m the mass of the object.

g is called acceleration due to gravity and it is the value of the acceleration due to the force of gravity of any object near the Earth's surface (its value is approximately $9.81 m/s^2$ . Since the Earth is much more massive than any other object, the object is attracted towards the Earth (so, it accelerates towards it); the Earth is also attracted by the object, however, being its mass so large, its acceleration is negligible.

Learn more about gravitational force:

brainly.com/question/1724648

brainly.com/question/12785992

#LearnwithBrainly

8 0

4 years ago

The concentration of the solute in the solution is the same as in the cell

goblinko [34]

If the solute concentration is equal both inside and outside of the cell it is isotonic

5 0

3 years ago

A/an _____ is used to enlarge the opening of any body canal or cavity to facilitate the inspection of its interior.​

A/an _____ is used to enlarge the opening of any body canal or cavity to facilitate the inspection of its interior.