Genetics: The Science of Heredity and Variation

Posted by on Jun 5, 2024 in Biology | 0 comments

  1. Genetics: The branch of biology that deals with the study of genes, genetic variation, and heredity in organisms.

  2. Heredity: The passing on of traits from parents to offspring through genetic information.

  3. Phenotype: The observable physical or biochemical characteristics of an organism, influenced by both genetic makeup and environmental factors.

  4. Genotype: The genetic makeup of an organism, referring to the specific combination of alleles present in its DNA.

  5. Mutation: A change in the DNA sequence of an

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Understanding Health, Diseases, and Healthy Living

Posted by on Jun 3, 2024 in Biology | 0 comments

Health and Its Determinants

Health is a state of equilibrium resulting from the combination of physical, mental, and social well-being. Health and illness are influenced by genetic, biological, environmental, and personal factors.

Causes of Aging

Aging is a complex process driven by:

  • Errors in DNA replication and transcription, and unrepaired mutations.
  • Cellular aging and death, leading to organ degeneration.
  • Exhaustion of the neuroendocrine and immune systems.
  • Formation of free radicals within cells.

Cancer

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Sterilization Methods and Pyrogen Testing

Posted by on Jun 2, 2024 in Biology | 0 comments

Qualitative vs. Quantitative Analysis

Qualitative Analysis: Results are expressed descriptively or in terms of presence/absence.

Quantitative Analysis: Results are expressed numerically.

The interpretation of an analysis can only be completely correct if the sample is representative. Both sampling and sample preparation are different for each type of analysis and each type of material to be analyzed. However, all methods must:

  • Reflect the microbiological conditions of the lot.
  • Be collected aseptically
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Photosynthesis: Process, Requirements, and Factors Affecting Its Rate

Posted by on Jun 2, 2024 in Biology | 0 comments

Photosynthesis

Process of Photosynthesis

Photosynthesis is the process by which plants manufacture carbohydrates from raw materials using energy from light.

Equation:

carbon dioxide + water → glucose + oxygen

in the presence of light and chlorophyll

Chemical Equation:

6CO2 + 6H2O —> C6H12O6 + 6O2

Role of Chlorophyll

What is the function of chlorophyll in photosynthesis?

Chlorophyll transfers light energy into chemical energy in molecules, which is then used for the synthesis of carbohydrates.

Use and

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Plant Biology: Vascular Plants, Angiosperms, Gymnosperms, and More

Posted by on Jun 2, 2024 in Biology | 0 comments

Vascular Plants

Vascular plants are those that have a system of vessels inside that allow the movement of substances and nutrients throughout the plant. Two examples of vascular plants are ferns and Ficcus, a woody plant with no flowers. There are also vascular plants with flowers such as sunflowers, and there are woody plants such as apricot that have a vascular system, yet also have flowers in a process of reproduction.

Angiosperms and Gymnosperms

Angiosperms have covered seeds by fruit (orange,

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Cellular and Molecular Biology: Energy, Cells, and Membranes

Posted by on Jun 1, 2024 in Biology | 0 comments

CH6: Energy

Kinetic, Thermal, Potential, Chemical Energy

  • Kinetic: motion
  • Thermal: random movement of atoms
  • Potential: matter possesses due to location/structure
  • Chemical energy: potential energy available for release in chemical reaction

Organisms are Open Systems

  • Thermodynamics: study of energy transformations
  • 1st law: energy is constant
  • 2nd law: every energy transfer increases disorder

Entropy

  • Increases from liquid to gas

Spontaneous and Non-Spontaneous Reactions

  • Spontaneous: without energy input
  • Non-spontaneous:
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