Chemical composition of the foods we eat

Our bodies break down food through the digestive process. Let’s investigate the chemical composition of the foods we eat. The USDA Nutrient Data Laboratory has posted a resource through which we can investigate the chemical composition of foods. Assignment: (1) Choose a food, (2) analyze the nutritional components that food ...continues

Prokaryotic and Eukaryotic Cells

Prokaryotic and eukaryotic cells share many similar features, developed and fine-tuned through years of evolution. Interestingly, the majority of prokaryotic cells exist as simple unicellular organisms, and only on rare occasions can grow together in colonies or demonstrate any type of intercellular communication. Eukaryotic cel ...continues

How you think the further evolution of antibiotic resistance can or cannot be prevented.

The evolution of antibiotic resistance in bacterial populations is a direct consequence of natural selection applied by widespread use of antibiotic drugs. When a new antibiotic is first introduced, it kills the vast majority of bacteria exposed to it. The surviving bacterial cells, however, may include individuals whose genomes ...continues

Biotechnology

Biotechnology allows us to use living organisms or their processes for human needs or purposes. Research how biotechnology is used today. Describe one use of biotechnology, answering the following questions: What biotechnology application did you choose? Briefly describe this process or application. What benefits are ...continues

Taxonomic Classification

Animals are placed in taxonomic classifications based on differences and similarities of their traits. If you know what critical traits to look for, it is possible to separate any animal into a taxonomic category. Download the document. (See attached file) The document contains a table with images. The images are examples ...continues

Find an angiosperm that has modified leaves, stems, roots or flowers that do not function in the normal manner, or that function in an unusual manner.

Angiosperms (flowering plants) are the largest Phylum in the plant kingdom (Angiospermophyta is also called Anthophyta or Magnoliophyta). These plants have true roots, stems, leaves and flowers. The roots grow into the soil to anchor the plant in place and take up water and nutrients. The leaves are above ground and act as the m ...continues

Find an angiosperm that has modified leaves, stems, roots or flowers that do not function in the normal manner, or that function in an unusual manner

Angiosperms (flowering plants) are the largest Phylum in the plant kingdom (Angiospermophyta is also called Anthophyta or Magnoliophyta). These plants have true roots, stems, leaves and flowers. The roots grow into the soil to anchor the plant in place and take up water and nutrients. The leaves are above ground and act as the m ...continues

What intermediates of nucleotide biosynthesis would accumulate?

The diazo compound O-(2-diazoacetyl)-L-serine is a powerful inhibitor of glutamine amidotransferases. If growing cells are treated with this compound, what intermediates of nucleotide biosynthesis would accumulate. Please explain your answer.

Propose a possible mechanism for growth hormone signaling.

Human growth hormone binds to a cell surface membrane protein that is not a receptor tyrosine kinase. The intracellular domain of the receptor can bind other proteins inside the cell. Furthermore, studies indicate that the receptor is monomeric in the absence of hormone but dimerizes on hormone binding. Propose a possible me ...continues

What positions are labeled in the two nucleotides?

Purine biosynthesis is allowed to take place in the presence of [N15]aspartate, and the newly synthesized GTP and ATP are isolated. What positions are labeled in the two nucleotides?