BIOLOGY

  8. Oxidation of the 10 molecules of NADH produced from each glucose therefore accounts for almost 80 percent of the total energy released from the sugar. What does the ETC do with all this energy?  answer : Introduction: The metabolism of glucose is a complex process that involves a series of chemical reactions that convert the sugar into energy that can be used by cells. One of the key steps in this process is the oxidation of NADH, a molecule that is generated as a byproduct of glucose metabolism. This oxidation generates a significant amount of energy, which is then used to power other cellular processes. Content: During the breakdown of one glucose molecule, it produces 2 molecules of NADH. The oxidation of these 10 NADH molecules, which occurs in the electron transport chain (ETC) of the mitochondria, accounts for nearly 80% of the total energy released from the sugar. The ETC is a series of protein complexes that transport electrons from NADH to oxygen, generating a ...

    9.  Discuss the discovery of ATP synthase complex and its role in high-energy molecule production. answers: ATP synthase is a complex enzyme that catalyzes the synthesis of ATP from ADP and inorganic phosphate. It was first discovered by Paul D. Boyer and John E. Walker in the late 1960s and early 1970s. They were awarded the Nobel Prize in Chemistry in 1997 for their work. ATP synthase is found in the inner membrane of mitochondria in eukaryotic cells and in the plasma membrane of prokaryotic cells. It consists of two main parts: the F0 complex, which is embedded in the membrane and acts as a proton channel, and the F1 complex, which sits on top of the F0 complex and contains the enzymes that catalyze the actual synthesis of ATP. ATP synthase works by using the energy from the flow of protons across the inner membrane to drive the rotation of a ring of subunits within the F1 complex. This rotation causes the subunits within the F1 complex to change conformation and c...

  6.  Discuss genetics of human diseases with suitable examples. answer : Introduction: Genetics is a field of study that investigates the role of genes in the development of different traits and characteristics in living organisms. In the case of human diseases, genetics plays a significant role in the development of many conditions. This paper will discuss the genetics of human diseases and provide examples to illustrate the genetic causes of these disease. content : Genetics plays a significant role in the development of many human diseases. Some examples of genetic diseases include: Cystic fibrosis: This is an inherited disease caused by mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene, which leads to the accumulation of thick mucus in the lungs, pancreas, and other organs. Sickle cell anemia: This is a blood disorder caused by a mutation in the HBB gene, which codes for hemoglobin, the protein in red blood cells that carries oxygen. The mut...

  5.   Do alleles of different genes segregate together or independently? answer : Introduction: The inheritance of genetic traits is determined by the distribution of alleles, which are different versions of a gene. During the formation of gametes, the segregation of alleles plays a crucial role in determining the genetic makeup of the offspring. The question of whether alleles of different genes segregate together or independently is a fundamental concept in genetics. Content: Alleles of different genes generally segregate independently during meiosis, due to the process of independent assortment. This means that the distribution of alleles for one gene during the formation of gametes is not affected by the distribution of alleles for another gene. However, there are some exceptions to this rule, such as linkage, where certain genes are located close together on the same chromosome and may be inherited together more frequently than would be expected by chance. Conclusion: ...

  4.  Mendel performed a dihybrid cross experiment to confirm whether the principle of segregation would hold true when individuals had two different traits instead of just one. answer : Introduction: Gregor Mendel, an Austrian monk and scientist, is known as the "Father of Genetics" for his pioneering work in the study of inheritance. His experiments on pea plants helped to establish the basic principles of genetics and laid the foundation for our understanding of how traits are passed down from one generation to the next. One of his most notable experiments was the dihybrid cross, which aimed to confirm whether the principle of segregation would hold true when individuals had two different traits instead of just one. Body: Mendel chose to study the inheritance of seven different traits in pea plants, including seed color, seed shape, flower color, flower position, pod color, pod shape, and stem length. He chose these traits because they were easy to observe and had distin...

  3.  Mendel performed a monohybrid cross using the round and wrinkled seeds; with our classroom discussion, write on proving the inheritance of seed shape in peas. amswer : Introduction: Gregor Mendel, an Austrian monk, is known for his pioneering work in the field of genetics. He conducted a series of experiments on pea plants to understand the inheritance of certain traits. One of the experiments he performed was a monohybrid cross using the round and wrinkled seeds. In this experiment, Mendel aimed to understand the inheritance of seed shape in peas. Main Content: Mendel performed a monohybrid cross by breeding a true-breeding pea plant that produced round seeds with another true-breeding pea plant that produced wrinkled seeds. He found that all of the offspring produced in the first generation (F1) had round seeds. However, in the second generation (F2), he observed that some of the offspring had round seeds while others had wrinkled seeds. He found that the F1 generati...

  2.  Tabulate any ten vocabularies used in Mendelian genetics with its definition and example. answer : Vocabulary Definition Example Allele One of two or more versions of a gene A gene that controls flower color can have the alleles R (red) and W (white). Dominant An allele that is expressed when present in a heterozygous individual The R allele is dominant, so an individual with the genotype Rr will have red flowers. Recessive An allele that is only expressed when present in a homozygous individual The W allele is recessive, so an individual with the genotype WW will have white flowers. Genotype The genetic makeup of an individual An individual with the genotype Rr has one copy of the R allele and one copy of the W allele. Phenotype The physical or observable traits of an individual The phenotype of an individual with the genotype Rr is red flowers. ...

  1.  The chromosome theory launched the study of genetics, the branch of biology that focuses on the inheritance of traits. What are the rules of inheritance that Mendel discovered?  answer : Mendel's Laws of Inheritance Inheritance can be defined as the process of how a child receives genetic information from the parent. The whole process of heredity is dependent upon inheritance and it is the reason that the offsprings are similar to the parents. This simply means that due to inheritance, the members of the same family possess similar characteristics. It was only during the mid 19th century that people started to understand inheritance in a proper way. This understanding of inheritance was made possible by a scientist named Gregor Mendel, who formulated certain laws to understand inheritance known as Mendel’s laws of inheritance. Mendel’s laws The two experiments lead to the formulation of Mendel’s laws known as laws of inheritance which are: Law of Dominance Law of Se...

  9.  Biologists study anatomy and physiology at many levels; from your classroom discussion, elaborate on the levels of organization within an organism.  answer : Order the levels of organization for living organisms Key Points Cells are the most basic unit of life at the smallest level of organization. Cells can be prokaryotic (without nucleus) or eukaroyotic (with nucleus). The four categories of tissues are connective, muscles, epithelial, and nervous tissues. Organs are made of different types of tissues and perform complex functions. They can be hollow or solid. Organ systems are groups of organs that perform similar functions or perform functions together. Many physiological functions are carried out by multiple organ systems working in tandem. Key Terms cell : The smallest unit of life capable of independent reproduction. Generally contains nucleic acid, cytoplasm, a cell membrane, and many other proteins and structures. organ : A structure made of different tissu...

8. Discuss the structure-function relations at the molecular and cellular levels of animal tissue or organs in detail.  answer : At the molecular level, animal tissues and organs are composed of different types of molecules that perform specific functions. For example, proteins are responsible for structural support, enzymes catalyze chemical reactions, and nucleic acids store and transmit genetic information. These molecules are organized into complex, hierarchical structures that perform specific functions. At the cellular level, animal tissues and organs are composed of different types of cells that perform specific functions. For example, muscle cells contract to produce movement, nerve cells transmit electrical signals, and epithelial cells form the lining of organs and glands. Cells are organized into tissues, which are groups of similar cells that perform a specific function. For example, muscle tissue is composed of muscle cells, nervous tissue is composed of nerve cells, a...

  7.   Discuss the role of fitness trade-offs of "Crickets," and its adaptation derives from the pre-existing traits.  answer : Crickets are insects that have evolved a variety of traits that help them survive and reproduce in their environments. These traits, or adaptations, have likely arisen as a result of fitness trade-offs. A fitness trade-off occurs when an organism must choose between investing resources in one trait that increases its chances of survival, and another trait that increases its chances of reproduction. For example, a cricket may invest more resources in developing strong legs for jumping, which increases its chances of escaping predators, but this investment may come at the cost of investing less resources in developing large testes, which increases its chances of reproducing. Crickets are known to have a variety of adaptations that help them survive and reproduce in their environments. For example, many crickets have developed large hind legs that a...

  6.  The plant tissues are grouped into broader categories, referred to as tissue systems. Elaborate on the kinds of tissue systems found in plants and their function.  answer: A collection of  cells  performing a specific function is called tissue. Plant tissues can be grouped into plant tissue systems each performing specialized functions. A plant tissue system is defined as a functional unit, connecting all organs of a plant. Plant tissue system is also grouped into various tissues based on their functions. Plant Tissues are categorized broadly into three tissue systems: the epidermis, ground tissue and the vascular tissue. Classification of Plant Tissues – Based on its location in the Plant Epidermal tissues – It covers the outside of a plant in a single layer of cells. Ground tissues – It covers the interiors of a plant. Vascular tissues – Transports water and dissolved substances inside the plant. Classification of Plant Tissues – Based on the kind of cel...