BIOLOGY HIGH SCHOOL

describe the three steps in urine formation. include a definition of the molecules involved during each step, as well as the process involved (active or passive transport)/

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Answer 1
Answer: Urine forms as some of the blood plasma spills out, some of these spilled plasma components are taken back up into the blood, and other material is selectively sent out to be added to the urine. In other words, there are three main things happening to form urine. 
glomerular filtration (blood plasma spills out) bullet tubular reabsorption (some items are selectively reabsorbed into the blood) bullet tubular secretion (some blood plasma items are selectively sent out into the tubules)

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Please help!High School Earth and Space Science Semester B (EdOptions Academy users)Course Activity: Comparing Energy Resources Part DManagement of natural resources can affect the sustainability of human populations. For example, consider an effort to decontaminate a small village’s water supply. This effort is projected to increase the carrying capacity from an initial population of 400 people (P = 400) to 450 people (K = 450) during the course of 10 years (x = 10). Use the simulation to determine the growth rate r of the population in this village. Round your answer to the nearest whole number. (Hint: Use the tool's zoom feature to get a closer look at the curve.)(view image for graph)Part ETechnological advancements can help make consumption and management of natural resources more sustainable, as discussed in part C. As technology enhances renewable, sustainable energy sources, how will this likely affect the carrying capacity and growth rate of the human population over time?Part FRead this below about biodiversity, and then answer the following question.“The Midwest is helping to pioneer the biofuel movement in the United States. Burning biomass—a natural resource—for fuel doesn’t emit additional CO2 into the atmosphere. However, biofuel production reduces the area’s biodiversity because corn, which is a primary source of biomass, is overplanted. Grasslands and fields once inhabited by a large variety of flowers, grasses, insects, and pollinators are being cleared as the demand for corn increases. The impact of eliminating these species and decreasing the area’s biodiversity then spreads as other plants and crops that relied on the insects and pollinators are threatened. These negative consequences can then magnify throughout the ecosystem.”If an ecosystem is no longer able to sustain its biodiversity, what potential impact could that fact have on the carrying capacity and growth rate of the human population over time? As you answer, think about how the energy is transferred through an ecosystem.Part GWrite one to two paragraphs describing the relationship between the management of natural resources, the sustainability of the human population, and biodiversity. Use your work from parts A through F to guide you.

The villi decrease the surface area of absorption. (True or False)

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The answer is false.
Villi actually increase the surface area.

Final answer:

False.

Villi actually increase the surface area for absorption in the small intestine.

Explanation:

The statement 'The villi decrease the surface area of absorption' is False.

In fact, the villi in the small intestine increase the surface area available for absorption. Villi are small finger-like projections that line the inner surface of the small intestine. They are covered with tiny microvilli, which further increase the surface area. This increased surface area allows for more efficient absorption of nutrients from digested food in the small intestine.

Without the villi, the surface area for absorption would be significantly reduced, making the digestion process less efficient.

Learn more about villi here:

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The bones that make up forelimbs of monkeys cats whales and birds are similar. Which of the following statements best support the evolutionary relationship of these animals

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B.) The animals sharea common ancestry but have adapted to different environments. 

Answer:

How fossils of species that lived on Earth for short periods of time and were abundant and were widespread geographically ?

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Answer:

Index fossils represents the fossils of the organisms that lived in a particular geological time zone. The index fossils defines a geological time of a dead  organisms. Index fossil ensures that a correct order of geological time appears in a fossil record. The index fossils of organisms that lived for a short period, were abundant and widespread geographically.

In what phases is the genetic material in the cell correctly referred to as chromatids?a. interphase and prophase
b. metaphase and telophase
c. anaphase and metaphase
d. metaphase and prophase E. interphase and telophase

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The answer is c. anaphase and metaphase.

Mitosis consists of four phases - prophase, metaphase, anaphase, telophase and cytokinesis.1. Prophase: Chromatin in the nucleus condenses and chromosomes pair up. Mitosis consists of four phases - prophase, metaphase, anaphase, telophase and cytokinesis

1. Prophase: Chromatin in the nucleus condenses and chromosomes pair up

2. Metaphase: Chromosomes line up at the center of the cell. The sister chromatids are joined together.

3. Anaphase: The sister chromatids separate from each other to the opposite sides of the cells.

4. Telophase and Cytokinesis: Membrane forms around each set of chromosomes on two opposite sides of the cells and cell divides into two identical daughter cells.


Therefore, chromatids are present in metaphase and anaphase. In prophase structures are called chromonema.
The genetic material in the cell is correctly referred to as chromatids in D) metaphase and prophase. 

What are the main organs of the CNS? brain spinal cord peripheral nerves pituitary gland

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The brain and spinal cord are the main parts of the CNS.

What type of weathering do you think is more rapid in your area

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chemical weathering, because it causes the redness in the soil.
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