1. The table below is the experimental pH values for the solutions of 0.1M. Use the table to answer the following questions:

a)Which set of solutions that you measured are strong acids? Explain your choice based on the observed pH.

b)Which set of solutions that you measured are the cconjugate bases of strong acids? Explain your choice based on the observed pH.

c)Which set of solution are the weak acids? Explain your choice based on the observed pH.

d) Which set of solutions that you measured are the conjugate bases of the weak acids? Explain youe choice based on the observed pH.

When glucose is transported into liver cells, it is modified.

A. Name the type of modification to glucose. ________________________________________________________________________

B. In which part of liver cell does this modification occur? ________________________________________________________________________

C. Name the enzyme in liver cells responsible for this modification. ________________________________________________________________________

D. Name the enzyme in brain and muscle cells with the same activity. ________________________________________________________________________

E. What is the significance of this type of modification? ______________________________________________________

please answer all 15 questions if u cant answer all then please let someone else answer it. thanks.

Histones are proteins associate with which of the following?

Blood

Hair Follicle

DNA

Sperm

2. Skip
3. Which of the following organs releases Bicarbonate as a response release of secretine by duodenum?

Liver

Pancreas

Gall Bladder

Spleen

4. Which of the following describes a process that occurs along the proximal tubules of nephron?

Toxins in the filtrate are detoxified

Glucose, lactate, and amino acids are reabsorbed

Altered filtrate leaves the urinary system in the body

Urea is actively reabsorbed

5. Using the equation PH = -log (H+) a solution with a (H+)=10^-9M has a PH of which of the following?

1

10

5

9

6. Which of the following central nervous system releases chemical that regulate the pituitary gland?

Cerebellum

Spinal cord

Thalamus

Hypothalamus

7. Which of the following organic molecules contain both amine and carboxyl group?

Proteins

Lipids

Cellulose

Chitin

8. Which of the following pathways best represents the expected follow of blood from the human heart to an organ?

Blood pumped from the heart first enters arteries that than narrow to form arterioles that deliver blood to capillaries of the organ.

Blood pumped from the heart first enters the arterioles that than merge to form arteries that deliver blood to organ.

Blood pumped from the heart first enters veins that than narrow to form venules that deliver blood to arteries of the organ.

Blood pumped from the heart first enters arteries that than form veins that deliver blood to organ.

9. Which of the following occurs during inhalation?

The volume of the thoracic cavity decreases

The ribcage lowers

Air moves areas of the low pressure to areas of high pressure

The diaphragm moves downward

10. Sunlight can damage epithelial cells of the skin, but limited exposure of uv radiation results in the beneficial of production of which of the following?

Vitamin D

Vitamin B

Vitamin A

Vitamin k

11. Which of the following skin layers contains dead cells?

Stratum corneum

Stratum basale

Reticular Layer

Papillary layer

12. Which of the following describes the function of neuron?

Stores potassium ions

Creates electrical impulses

Provide electro light

Transmit Sensory

13. skip
14. The process by which gamtes combine to form a zygote is called which of the following?

Parthenogenesis

Meiosis

Fertilization

Mitosis

15. In plant and which Fuzzy leaves F are dominate over smooth leaves f, which of the following crosses will produce only offspring with smooth leaves?

Ff x Ff

FF X FF

Ff x ff

Ff x ff

1. Histones are proteins associate with which of the following?

Blood

Hair Follicle

DNA

Sperm

2. Skip
3. Which of the following organs releases Bicarbonate as a response release of secretine by duodenum?

Liver

Pancreas

Gall Bladder

Spleen

4. Which of the following describes a process that occurs along the proximal tubules of nephron?

Toxins in the filtrate are detoxified

Glucose, lactate, and amino acids are reabsorbed

Altered filtrate leaves the urinary system in the body

Urea is actively reabsorbed

5. Using the equation PH = -log (H+) a solution with a (H+)=10^-9M has a PH of which of the following?

1

10

5

9

6. Which of the following central nervous system releases chemical that regulate the pituitary gland?

Cerebellum

Spinal cord

Thalamus

Hypothalamus

7. Which of the following organic molecules contain both amine and carboxyl group?

Proteins

Lipids

Cellulose

Chitin

8. Which of the following pathways best represents the expected follow of blood from the human heart to an organ?

Blood pumped from the heart first enters arteries that than narrow to form arterioles that deliver blood to capillaries of the organ.

Blood pumped from the heart first enters the arterioles that than merge to form arteries that deliver blood to organ.

Blood pumped from the heart first enters veins that than narrow to form venules that deliver blood to arteries of the organ.

Blood pumped from the heart first enters arteries that than form veins that deliver blood to organ.

9. Which of the following occurs during inhalation?

The volume of the thoracic cavity decreases

The ribcage lowers

Air moves areas of the low pressure to areas of high pressure

The diaphragm moves downward

10. Sunlight can damage epithelial cells of the skin, but limited exposure of uv radiation results in the beneficial of production of which of the following?

Vitamin D

Vitamin B

Vitamin A

Vitamin k

11. Which of the following skin layers contains dead cells?

Stratum corneum

Stratum basale

Reticular Layer

Papillary layer

12. Which of the following describes the function of neuron?

Stores potassium ions

Creates electrical impulses

Provide electro light

Transmit Sensory

13. skip
14. The process by which gamtes combine to form a zygote is called which of the following?

Parthenogenesis

Meiosis

Fertilization

Mitosis

15. In plant and which Fuzzy leaves F are dominate over smooth leaves f, which of the following crosses will produce only offspring with smooth leaves?

Ff x Ff

FF X FF

Ff x ff

Ff x ff

Which are the Brønsted–Lowry acids in the following equilibrium?Which are the Brønsted–Lowry acids in the following equilibrium? CH3COOH(aq) + NaOH(l)⇌ NaCH3COO(aq) + H2O(l)CH3COOH(aq) + NaOH(l)⇌ NaCH3COO(aq) + H2O(l)

Select one:

a. CH3COO–and OH––

b. H2O and OH–

c. H2O, CH3COOH, and OH–

d. CH3COO–and CH3COOH

e. H2O and CH3COOH

Part 2 – Comparing the reactivity of some metals with acids Many metals react with acids, via an electron-transfer (oxidation-reduction) reaction that transforms the metal into dissolved metal ions. A co-product of this reaction is hydrogen gas, formed when hydrogen ions in the acid solution take up electrons from the metal and couple. Your task here is to test a few different metals to see how their reaction intensities compare. 1. Obtain 12 clean small test tubes (they can be slightly wet). Divide them into three sets of four tubes, and label the sets as: “HCl”, “acetic acid” and “water”. 2. To the four “water” test tubes, add about 1 mL of water. To the four “HCl” test tubes, add about 1 mL of 3 M hydrochloric acid using the 1 mL graduated pipette that goes with the reagent bottle. To the four “acetic acid” tubes, add 1 ml of 3 M acetic acid. (Do not mix up the droppers!) Carefully note the smells of the two acids. Do this by wafting air over the sample towards your nose with your hand - never smell a chemical directly. Exp.2: OBSERVATIONS 2 - 4 3. Now divide the tubes into four sets, one of each kind. Label them (or place them on a labeled sheet of paper) as: “steel wool”, “Mg”, “Al sheet” and “Al foil”. 4. To each “steel wool” tube: add a small loosely packed ball of steel wool about 3 mm in diameter. Make initial observations and note the time, then push the steel wool down into the liquids with a clean glass stir rod. Record your observations immediately after mixing and again as time passes: colour changes, gas formation, solid formation (cloudiness), odours, and heat evolution all provide evidence of chemical reaction. [Make notes on Observations/Data page.] Note: compare the acid-treated samples to the “control” water-treated sample – only then can you determine whether any chemical reactions observed are caused by the acid or simply by the water also present. 5. Repeat step 4 with the other metals: ~5 mm strip of magnesium ribbon, 5 mm square of aluminum sheet, and 5 mm diameter loose ball of aluminum kitchen foil.

Regarding Part 2: Consider the physical nature of the metals you tested, their positions on the periodic table, and the different strengths of the acids you used. What conclusions can you draw from your observations of the action of the acids on the different metals you tested? Be careful to explicitly distinguish between speculations you cannot back up and speculations based on any chemistry you may already have learned.

What is the role of amino-acyl-tRNA-synthetases?

A nonstandard amino acid has three ionizable groups, with pKa values of 2.6, 7.4, and 10.13. A 0.1 M solution of this amino acid is made, 100 ml total, at pH 2.6. To this solution is added 10 ml of 1 M NaOH. What is the final pH of this solution after the addition?

A) 3.2
B) 8.0
C) 7.4
D) 6.8
E) 10.13

In an agricultural experiment, the effects of two fertilizers on the production of oranges were measured. Seventeen randomly selected plots of land were treated with fertilizer A. The average yield, in pounds, was 457 with a standard deviation of 38. Twelve randomly selected plots were treated with fertilizer B. The average yield was 394 pounds with a standard deviation of 23. Find a 99% confidence interval for the difference between the mean yields for the two fertilizers. (Round down the degrees of freedom to the nearest integer and round the final answers to two decimal places.)

How does the enzyme-substrate complex actually work to lower the activation energy? I understand that that when the enzyme and substrate combine to form a complex, this is known as the transition state and in this state, the complex is unstable however it lowers the activation energy required. I just don't understand what about this complex lowers the activation energy