BIOL 1012 by Heather Robinson

Padlet 1

robinsonheather17 — 2025-01-16 23:56:05 UTC

The image shows a gradual shift from early primates to more advanced human forms, illustrating the concept of gradual changes over millions of years. This is a key component of evolution, where small changes accumulate over generations. The progression suggests that all species, including humans, share common ancestors. It visualizes the branching patterns of evolution, where species diverge from a common origin. he image often shows changes in features like posture, brain size, and bipedalism, reflecting how species adapt to their environments over time. These adaptations help organisms survive and reproduce in changing conditions. The image may include various species that are now extinct or that have evolved into modern humans, emphasizing biodiversity and the dynamic nature of evolution.

robinsonheather17 — 2025-01-16 23:56:43 UTC

robinsonheather17 — 2025-01-16 23:57:46 UTC

https://en.wikipedia.org/wiki/Human_evolution

https://padlet.com/robinsonheather17/biol-1012-q3qdsmjr8jkylnnd

Padlet 3

robinsonheather17 — 2025-02-01 18:15:35 UTC

Monocots are plants that have seeds with a single cotyledon, or seed leaf, inside. This means that when a monocot seed sprouts, only one leaf will appear initially. In terms of leaf structure, monocots generally have parallel veins, like those seen in grasses and lilies. The vascular bundles, which are the structures that transport nutrients and water within the plant, are scattered throughout the stem in monocots, rather than being arranged in a ring. This gives monocots a unique internal structure compared to dicots. Additionally, monocot plants typically have flower parts in multiples of three, such as three petals or six petals. The root system of monocots is fibrous, meaning it is made up of many thin, similarly sized roots that spread out. Common examples of monocots include grasses, corn, and lilies.

Dicots are plants that have seeds containing two cotyledons, which means that when the seed germinates, two seed leaves will appear. The leaves of dicots often show reticulate venation, where the veins branch out in a net-like pattern. This is different from the parallel venation found in monocots. Inside the stem, dicots typically have vascular bundles arranged in a ring, providing structural support to the plant. Flower parts in dicots usually occur in multiples of four or five, like the petals of a rose or a daisy. Dicots have a taproot system, which means they develop one large, central root from which smaller roots branch out. This type of root system is common in trees, shrubs, and many flowering plants. Examples of dicots include roses, sunflowers, and apple trees.

https://old-ib.bioninja.com.au/higher-level/topic-9-plant-biology/untitled-3/monocots-versus-dicots.html

Padlet 4

robinsonheather17 — 2025-02-02 15:05:15 UTC

Mollusca is a diverse phylum of invertebrates that includes animals such as snails, clams, squids, and octopuses. These organisms are characterized by a soft, unsegmented body and typically have three main body parts: the head-foot, visceral mass, and mantle. The head-foot region contains sensory organs and a muscular foot used for movement. The visceral mass contains most of the internal organs, and the mantle secretes the shell in many species. Many mollusks also have a radula, a specialized feeding structure that scrapes food. Mollusks have a complete digestive tract with a mouth, stomach, and anus. The digestive gland helps break down food. Many species also filter-feed, such as bivalves like clams. Mollusks generally have an open circulatory system, where blood flows freely in the body cavity, although cephalopods have a closed circulatory system for greater efficiency. Some mollusks have a heart that pumps blood, and their blood often contains hemocyanin, which carries oxygen. Mollusks usually have gills for respiration, especially aquatic species. Terrestrial mollusks often have a modified lung. The mantle cavity in some species aids in gas exchange. The nervous system ranges from simple to more complex. While most mollusks have a brain and nerve cords, cephalopods have well-developed brains and advanced sensory systems, making them highly intelligent. Mollusks are primarily dioecious, though some species are hermaphroditic. Fertilization can be external (in many marine species) or internal. Mollusks are found in nearly all environments, including marine, freshwater, and terrestrial ecosystems. They play key ecological roles as herbivores, filter feeders, and prey. Mollusks are also important economically, providing food, pearls, and shells.

https://animalfact.com/mollusk/

Padlet 5

robinsonheather17 — 2025-02-11 20:52:28 UTC

The PBS LearningMedia page provides an overview of homeostasis, emphasizing its role in maintaining a stable internal environment within the human body. It describes how the body regulates various physiological parameters, such as temperature, pH levels, and the concentration of ions, to ensure optimal functioning despite external changes. The resource also highlights the importance of feedback mechanisms in this regulatory process, illustrating how the body detects deviations from set points and initiates responses to correct them.

This resource offers interactive lessons and activities suitable for various educational levels, making it a valuable tool for understanding the concept of homeostasis.

https://gpb.pbslearningmedia.org/subjects/science/life-science/cells-and-cell-processes/homeostasis/?utm_source=chatgpt.com&rank_by=recency

Padlet 6

robinsonheather17 — 2025-02-14 16:55:42 UTC

I picked Celiac disease, I learned it is an autoimmune disorder in which the ingestion of gluten, found in wheat, barley, and rye, triggers an immune response that damages the lining of the small intestine. This damage affects the villi, the tiny hair-like structures in the intestine that help absorb nutrients, leading to malabsorption and nutritional deficiencies. The symptoms of celiac disease can vary greatly, including digestive issues like diarrhea, bloating, and abdominal pain, as well as fatigue, skin rashes, joint pain, and even neurological symptoms like headaches and numbness. It is a genetic condition, meaning that individuals with a family history of the disease are at higher risk.

Diagnosis of celiac disease usually involves blood tests to look for specific antibodies, followed by a biopsy of the small intestine to confirm the damage to the villi. The only treatment for celiac disease is a strict, lifelong gluten-free diet, which helps to heal the damaged intestine and prevent further complications. If left untreated, celiac disease can lead to serious health problems like osteoporosis, infertility, and an increased risk of certain cancers. Because its symptoms can resemble those of other conditions, celiac disease is often misdiagnosed, which makes early detection and management essential to prevent long-term damage. With proper management through diet, most people with celiac disease can live healthy, symptom-free lives.

Padlet 7

robinsonheather17 — 2025-02-27 21:12:30 UTC

The temperate deciduous forest biome is characterized by four distinct seasons: spring, summer, autumn, and winter. These forests are predominantly found in regions with moderate climates, experiencing both warm summers and cold winters. The climate temperate deciduous forests receive approximately 30 to 60 inches (75 to 150 cm) of precipitation annually, distributed fairly evenly throughout the year. This consistent rainfall supports a rich diversity of plant and animal life.

Dominant tree species include oak, maple, beech, and birch. These trees shed their leaves in autumn, creating a nutrient-rich layer on the forest floor. The forest floor is often covered with a variety of shrubs, ferns, and wildflowers, especially during the spring and summer months.

The biome supports a wide range of animals, such as deer, foxes, squirrels, raccoons, and various bird species like owls and woodpeckers. Many animals adapt to the changing seasons by hibernating during the winter or migrating to warmer climates.

The soil in temperate deciduous forests is typically fertile, enriched by the decomposition of fallen leaves and organic matter. This nutrient-rich soil supports the diverse plant life found in these forests.

These forests are primarily located in the eastern United States, much of Europe, and parts of Asia. They are situated in regions with a temperate climate, characterized by moderate temperatures and seasonal changes.

The temperate deciduous forest biome plays a crucial role in maintaining biodiversity and supporting various ecological processes, including nutrient cycling and carbon sequestration.

https://www.activewild.com/forest-biome/#:~:text=The%20forest%20biome%20encompasses%20any%20habitat%20on%20land,of%20forest%20are%20temperate%2C%20tropical%2C%20and%20boreal%20forest.

Padlet 8

robinsonheather17 — 2025-02-27 21:18:56 UTC

The video explains the concept of biodiversity, which refers to the variety of life on Earth, including different species, ecosystems, and genetic differences within species. It highlights the three key levels of biodiversity: species diversity, genetic diversity, and ecosystem diversity. Species diversity focuses on the variety of species in an ecosystem, genetic diversity emphasizes the variations within a species that allow for adaptation, and ecosystem diversity relates to the variety of ecosystems like forests, oceans, and deserts.

The importance of biodiversity is emphasized as it provides essential ecosystem services, such as pollination, water purification, and climate regulation, contributing to ecosystem stability and resilience. The video also discusses the threats to biodiversity, including habitat destruction, pollution, climate change, and the introduction of invasive species, all of which harm the balance of ecosystems.

Finally, the video touches on global conservation efforts, encouraging sustainable practices and the protection of habitats to prevent further loss of biodiversity and ensure the health of our planet's ecosystems for future generations.

https://www.youtube.com/watch?v=rclOz8Fsbmg