Describe the way in which DNA is replicated with reference to the following: (a) The formation of a replication bubble with 2 replication forks in opposite directions,the involvement of Okazaki fragments in replication, the synthesis of leading and lagging strand and the direction in which chain elongation occurs.

Please explain the following questions:

- What is the Calvin Cycle and what does it do?

- What is the fluid mosiac model?

Trace pathway for the digestive system for fat. Start at mouth end at heart.

The structure of chromatin at the centromeres is passed on to daughter cells through epigenetic inheritance, meaning without any input from the DNA sequence. Explain how this occurs.  

Please write in complete sentences. List the disease symptoms and virulence factors associated with Pseudomonas infections. Why can Pseudomonas be difficult to .control in a hospital environment?

You are studying a bacterial strain that is an obligate aerobe. The bacteria can do some fermentation and produce lactic acid as an end product, but normally only when starved for oxygen and can’t survive on fermentation alone. Your rival dumps a chemical into your prize culture. This chemical binds to the first protein in the electron transport chain, locking it into a fully reduced and inhibited state permanently. Describe the predicted consequences of this poison on the function of the following proteins or pathways. In each case, in 1-2 sentences describe: How the process normally works. How the process is affected by the poison initially (as the poison first acts) How the process is affected by the poison in the long term. Glycolysis: Krebs cycle: ATP Synthase: ( In the end, can this bacteria survive in the presence of this chemical? Yes or No

THIS LAB CORRESPONDS TO LAB TOPIC 11: POPULATION GENETICS:  THE HARDY-WEINBERG EQUILIBRIUM.

THE FOLLOWING NEEDS TO BE COMPLETED AND TURNED IN FOR LAB

1. Define and provide examples of the following terms:

1. Evolution:

2. Population:

3. Gene pool:

4. Gene flow:

5. Genetic drift:

6. Bottleneck effect:

7. Founder effect:

8. Natural selection:

9. Genetic fixation:

10. Genotypic frequency:

11. Allelic frequency:

12. Model:

THIS LAB CORRESPONDS TO LAB TOPIC 11: POPULATION GENETICS:  THE HARDY-WEINBERG EQUILIBRIUM.

THE FOLLOWING NEEDS TO BE COMPLETED AND TURNED IN FOR LAB

1. Define and provide examples of the following terms:

1. Evolution:

2. Population:

3. Gene pool:

4. Gene flow:

5. Genetic drift:

6. Bottleneck effect:

7. Founder effect:

8. Natural selection:

9. Genetic fixation:

10. Genotypic frequency:

11. Allelic frequency:

12. Model:

what type of tumor may cause metastasis?

a. a benign tumor

b. a malignant tumor

c. a cancerous tumor

d. none of above answers apply

A protein with a wild-type allele (P^wt) and protein with a mutant allele (P^m) are one amino acid in the position 12 of the protein chain. The mutant allele's sequence is 5'CTT whereras the wild-type allele's sequence is 5'CAT.

Using an amino acid chart, find :

P^wt in position #12

P^m in position #12

Which of the following accurately complete the sentence? Steroid hormones _______ Group of answer choices More than one answer is correct

Use a signal transduction system to deliver their ‘message’ to the nucleus of the target cell

Cannot pass easily through the outer cell membrane of the target cell

Delivery their ‘message’ to a receptor in the outer cell membrane of the target cell

Bind directly to a gene regulatory protein in the nucleus of the target cell

1. You cross two pea plants to create F1 progeny that are heterozygous for all 5 traits.

a. What is the probability of one F1 plant generating a gamete with alleles for green peas that are wrinkled OR smooth?

b. If you now cross two F1 plants, what proportion of offspring would have smooth, yellow peas with constricted pods, terminal flowers, and dwarf stems?

c. From this same cross, what proportion of offspring would have smooth, green peas with inflated pods, axial flowers and dwarf stems?

1. "Dr. Meyer wants to study the effect of Kava root on insomnia. She recruits 150 people who experience long term insomnia (more than 4 months experiencing insomnia) and divides them into two groups. One group of 75 individuals takes 125 mg of kavalactones one hour before bedtime. The other group of 75 individuals takes a placebo every day. For the duration of the study, the two groups follow two common guidelines: no added sugars or caffeine intake after 12pm and no screen time an hour before bedtime. Dr. Meyer follows the individuals during four weeks. She collects data on sleep patterns which include the number of hours slept each night and a scale of difficulty to fall asleep scored 1 to 5 (1 = feel asleep right away; 5 = more than one hour awake in bed)."

Answer Following:

What is the independent variable?

What is the dependent variable?

What is the experimental group?

Which is/are Dr. Meyer’s controlled variable(s)?

2. "“If Vitamin C supplementation shortens the length of the common cold, then adults taking 1g of Vitamin C a day will recover from the common cold faster than adults who aren’t taking Vitamin C supplementation.”

Is the following statement a prediction or a theory? How do you know?

Write a possible hypothesis for this experiment.

A plant is placed in a sealed box with sufficient air, water and sunlight for several months. A chemical is added to the chamber that immediately adds electrons to all the oxygen in the chamber. Assume plants cannot perform fermentation. Also remember that gas diffuses freely across membranes and cell walls.

Which of the following is most likely if the plant is left in the chamber