Primordial germ cells form in the early mammalian embryo. For either
males or females, describe the events between the formation of the
primordial germ cells and their subsequent release as mature gametes.
What molecular factors are important during the early embryonic
stages, and how are hormones involved post-puberty?(500words)

A patient is found to have the following blood results:
TSH 14 mU/L (Normal range 0.35-5.0mU/L)
Free Thyroxine 57pmol/l (Normal range 9-22pmol/l)
Explain the relationship between TSH and free thyroxine and state
why this is an unusual pattern of thyroid results.
State the possible causes of this pattern of results and how they
may be differentiated .

1. Is thelacoperon a repressible or an inducible operon? What happens in the absence of lactose? What happens in the presence of lactose? Is the trp operon a repressible or an inducible operon? What happens in the absence of tryptophan? What happens in the presence of tryptophan?

State if each of the following processes produce or consume ATP:

a. pyruvate forms acetyl CoA

b. First six reactions of glycolysis

Create columns as shown below: Name of Disease, Causative Agent(s), Virulence factors , Pathogenesis for the following skin diseases Erysipelas, and Cutaneous candidiasis.

Focus your discussion on ONE of the following topics:

1. Describe at least 2 benefits and 2 drawbacks there might be for animal cells (including humans) to make their own food through photosynthesis.
2. Explain which cells, tissues, or organs should be modified to lead to successful photosynthesis in animals or humans. Discuss how these compare to a plant's leaves.
3. Describe the process of photosynthesis to explain at least 1 requirement for photosynthesis that would need to be considered for chloroplasts to function in an animal or a human.

(a) Do a summary on FOUR (4) of the latest contraceptive methods for birth control explain what they are, indicate their mode of actions, advantages and disadvantages for each of the 4 examples you choose. The details of summary should be concise and informative. The length of the summary should be less than 500 words and plagiarism no more than 25%.

(b) In your own words explain how people’s ability to control birth influences the evolution processes.

In a scientific essay, Identify and explain the key characteristics that divide organisms into prokaryotes and eukaryotes referencing journal articles.

Describe the life cycle of a presynaptic vesicle, and explain the
mechanism by which the synaptic vesicle releases its content.(500words)

all of the following are required for natural selectional to give rise to evolution expect

a)traits must be variable

b)trait must affect fitness

c)trait must be heritable

Mr Ojomu is a 42 year male of African origin. He has a demanding desk-based job and frequently has to work long hours. He rarely eats regular meals and so has developed a habit of snacking on foods with high salt, fat and sugar contents. He routinely drinks at least 4 cups of coffee a day and at least one bottle of coca cola. Recently he has noticed that he has put on weight and easily gets out of breath when walking, he feels tired on waking, often suffers muscular aches and pains and experiences bouts of anxiety over his workload.

Using four of the systems from the list below, explain what steps Mr Ojomu should take to improve his overall physical and mental health. Include in your answer how the body systems you have selected work together to normalise body functions. 500 words

Human body systems
• The endocrine system
• The nervous system
• The cardio-vascular system
• The respiratory system
• The urinary system
• The lymphatic and immune system

This is the whole question, i didn't leave anything out. Help me solve this.

What if you wanted to test the effect of sucrose containing media on lac operon expression?

Design an experiment that would allow you to accomplish this.

1. The bacterium Micrococcus luteus lives on mammalian skin where it feeds on amino acids and lactic acid found in sweat. Answer the following questions about carbohydrate metabolism[1] in M. luteus.

1. M. luteus lacks any hexokinase orthologs (e.g. any enzyme catalyzing the reaction glucose + ATP ⇌ glucose-6-phosphate + ADP) as well as any phosphohexose isomerase homologs (e.g. any enzyme catalyzing the reaction glucose-6-phosphate ⇌ fructose-6-phosphate), but they express all other enzymes involved in glycolysis. Are M. luteus bacteria capable of catabolizing glucose via glycolysis? (1 point)

2. M. luteus expresses glycogen phosphorylase as well as phosphoglucomutase; i.e. these bacteria can convert glycogen to glucose-6-phosphate. Assuming M. luteus bacteria can transport glycogen into their cytoplasm, can M. luteus catabolize glycogen (e.g. via glycolysis) and, if so, how many ATP molecules can M. luteus produce (via glycolysis) for each 6 carbons of glycogen? (3 points)

3. Given your answer to the previous question, how many ATP molecules can an M. luteus bacterium produce (via glycolysis) from one 30,000 carbon molecule of glycogen? (2 points)

Which pathway enables M. luteus to produce sugars (e.g. for oligosaccharide biosynthesis) from glucogenic amino acids: glycolysis, gluconeogenesis, the Calvin cycle or the pentose phosphate reactions?

in response to comment: ok..so take time then