2. The evolutionary history of plants is studied through 1) comparative studies of living plants and 2) examination of the fossils of extinct plants. What information has the study of fossils contributed to our understanding of plant evolution?

1. Prepared slides of a hyacinth root tip specimen was also examined with a microscope. C The number of cells per zone and the total number of mitotic figures per zone (that is, cells that are in prophase, metaphase, anaphase, or telophase) were recorded. Calculate the length of each zone (in mm and to two decimal places) and the Mitotic Index (M.I.) to one decimal place. Your lab manual shows how to determine the length of each zone in the root tip. 4 marks

          M.I. = number of mitotic figures x 100

                                                           total number of cells

2. Comment on whether there is a difference in mitotic activity as you move through the zones (from Zone 1-4). Is there more activity in one zone compared to another? Why or why not? 4 marks

Answer: Click here to enter text.

Glycolysis (and its sister pathway gluconeogenesis) and the citric acid cycle are often referred to as the Central metabolic Pathways. Identify at least 3 other metabolic in aerobic organisms (animal and or plant) that interact with these two central pathways. Briefly describe the connections and conditions that govern the flow of energy and shared intermediates

Tom [cheek dimples] and Cindy [not] are having a child, and are curious whether their child will have dimples in its cheeks. Dimples is thought to be an autosomal dominant trait.

• What is the chance their first child will have dimples? Explain your reasoning.

• If their first child does not have dimples, what would the chance their second child has dimples? Again, explain your reasoning.

There are different kinds of isomers, describe them.

Name FIVE functional groups and list a property of each one.

Why is carbon so important to life on earth?

an outline on Aging and How it is Related to the Cardiovascular System

A young woman in a suspected breast cancer family takes the BRCA1 and BRCA2 genetic tests. As a genetics counselor, you are asked to meet with her.

Prior to receiving the results she want to meet with you to see if you can give her more information as to what are the different cancer types she is at higher risk for if in fact she test positive for a BRCA-1 or BRCA-2 mutation? What would these be?

Introduction
Through a series of activities we will examine some of the principles of genetics and techniques developed by geneticists to predict mating outcomes and understand how genetic information is passed from generation to generation.
Before coming to lab, refer to your textbook or other references and write definitions for the following words on a separate sheet of paper: chromosome, genes, locus, allele, dominant allele, recessive allele, genotype, phenotype, gamete, haploid, diploid, monohybrid, dihybrid, homozygous, heterozygous, linked genes, autosomal chromosomes, sex chromosomes, sex-linkage, and homologous chromosomes. Turn in these definitions next week with your report sheet.

6. What are the levels of the respiratory system, starting with the trachea as the ‘first level.’ Make the last level the smallest unit of the lungs. What major process/function happens at the smallest level?

Describe the evidence for the fact that DNA is the genetic material and the sequence of events leading from the sequence of nucleotides of DNA to the sequence of amino acids in proteins and their secretion. Include in your answer:

a. the early evidence for the location of genes on chromosomes, the first evidence that DNA was the genetic material, and that genes determined the structure of proteins

b. a description of the mechanisms and structures involved in of transcription and translation c. a description of the cellular structures involved in protein synthesis and secretion

As the cancer expert in the Biology Department at your school, NBC news contacts you to discuss the effects of bisphenol A (BPA) exposure on cancer risk. The reporter is very interested as she has read several articles on this topic. In particular she wants you to explain the following:

The reporter has read that in utero exposure increases the risk of mammary cancers in offspring. She wants you to explain the mechanism by which BPA may be increasing the risk of mammary cancers in the offspring.

As the cancer expert in the Biology Department at your school, NBC news contacts you to discuss the effects of bisphenol A (BPA) exposure on cancer risk. can cure leukemia can cure leukemiaThe reporter is very interested as she has read several articles on this topic. In particular she wants you to explain the following:

Is there sufficient evidence linking BPA to cancer? If so, is the risk the same of all types of cancer or are their particular types of cancer that are know to be associated with BPA exposure?

Describe the structure and roles of enzymes in metabolic pathways. Include in your answer: a. the structure of proteins, enzyme function, and the roles of coenzymes, cofactors and allosteric regulators b. a description of coupled reactions that drive metabolic pathways and the reasons that some molecules are unstable c. a description of the structure of ATP, the reasons for which it is unstable, and the role(s) of the phosphate group once transferred to another molecule.