a. What is fluid mosaic model of cell membrane and what is its functional importance?

b. Describe the differences between active and passive transport of material across membrane with examples.

1. Some enzymes, require other molecules, co-factors, to become activated and/or to function.

a. In general, describe what type of molecule a co-factor typically is, what it does and the common types of chemical interactions it forms with the enzyme. In your explanation, include the terms: apoenzyme and holoenzyme, and describe how a cofactor affects the enzyme-substrate affinity.

b. Compare/contrast the two main classes of cofactors, and describe an example of each (other than the ones presented in lecture). PS: “describe” means to explain how the cofactor interacts with the enzyme and what the effects are

Septicemia is a serious bloodstream infection, can quickly become life-threatening. Describe the causes, pathogenies, epidemiology, signs and symptoms, diagnosis and treatment. Include how it can be prevented. NOT bullet points, paragraph form please!

What is one metabolic process that would be affected by a plant having deficiencies in both manganese and chloride?

Research the chemical components of the air we breathe. Indicate the percentages of each chemical in our air. (10 points). Why can’t humans breathe in outer space? How about on the moon or on Mars

From the list below, choose two organisms or cell types and discuss what makes them unique compared to the cells Oscillatoria, Gloeocapsa, Lactobacillus, Chara, Onion cells and for animal cells: muscle, kidney and liver cells . Please limit your responses to one paragraph each. You must choose one prokaryote and one eukaryote. Make comparative statements describing unique cellular features, identify features by name, and accurately describe cell.

Prokaryotes:

Acinetobacter baumannii

Paenibacillus polymyxa

Spirilum vultans

Eukaryotes:

Valonia ventricosa

Pyramidal neuron

Erythrocyte

Describe 2 ways that energy and matter flow in the tropical rain forest ecosystem.    

1) Draw and explain why the conformation freedom of peptides is limited.

2) Discuss the roles of hemoglobin and myoglobin in transporting oxygen and carbon dioxide

DNA: How many spacing base pairs between two double-crossover units so that the two double-crossover units are parallel to each other?

Hello! I have no idea what my professor is asking here, any help is greatly appreciated. Thank you so much!

Is RNA directly used in DNA replication?

1.RNA is not involved during the process of genome replication

2.RNA is needed to provide the 3' -OH groups at the start of construction of new DNA

3.tRNA is matched to the codons on the genome during DNA replication

4.All of the monomers used to construct the new DNA molecule are first constructed as RNA and then a -CH3 group is added

What chemical you use to induce cell competent for transformation? What are three important features a vector should have?  Why it is important to have the recovery process during transformation? What is the next step after recovery process?

Bar eye (B) is a dominant and sex-linked trait of Drosophila. Curved wings (cu) and black body (bl) are recessive traits, both found on chromosome 2, separated by 24 map units. A homozygous Bar-eyed, black-bodied female is crossed to a true-breeding male expressing curved wings. The heterozygous F1 female is then crossed to a male expressing all three traits. At what frequency among the F2 would you expect to find a completely wild type male?

How often would you find a Bar eyed, curved wing female?