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3 years ago

How do rock types contribute to the rate of weathering?

Biology

2 answers:

alukav5142 [94]3 years ago

3 0

The correct answer is that porous minerals weather faster.

The process of weathering alter and disintegrates the rocks and minerals closer to or at the surface of the Earth. This process shapes the Earth's surface. The three kinds of weathering comprise biological, mechanical, and chemical. Weathering dissociates apart and erodes rocks and minerals.

The rocks are the symbols of strength and durability. The rocks are usually resilient to weathering. This confrontation relies on the mineral composition and mineral porosity. The physically soft or porous minerals are easily crushed and dissociated, while in case of harder minerals it is quite tough.

Sholpan [36]3 years ago

3 0

Answer:

Explanation:

i took the test

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Give one example of a parasitic fungi and explain how it affects human health.

Zarrin [17]

Answer: Many pathogenic fungi are parasitic in humans and are known to cause diseases of humans and other animals. In humans, parasitic fungi most commonly enter the body through a wound in the epidermis (skin). Such wounds may be insect punctures or accidentally inflicted scratches, cuts, or bruises. One example of a fungus that causes disease in humans is Claviceps purpurea, the cause of ergotism (also known as St. Anthony’s fire), a disease that was prevalent in northern Europe in the Middle Ages, particularly in regions of high rye-bread consumption. The wind carries the fungal spores of ergot to the flowers of the rye, where the spores germinate, infect and destroy the ovaries of the plant, and replace them with masses of microscopic threads cemented together into a hard fungal structure shaped like a rye kernel but considerably larger and darker. This structure, called an ergot, contains a number of poisonous organic compounds called alkaloids. A mature head of rye may carry several ergots in addition to noninfected kernels. When the grain is harvested, much of the ergot falls to the ground, but some remains on the plants and is mixed with the grain. Although modern grain-cleaning and milling methods have practically eliminated the disease, the contaminated flour may end up in bread and other food products if the ergot is not removed before milling. In addition, the ergot that falls to the ground may be consumed by cattle turned out to graze in rye fields after harvest. Cattle that consume enough ergot may suffer abortion of fetuses or death. In the spring, when the rye is in bloom, the ergot remaining on the ground produces tiny, black, mushroom-shaped bodies that expel large numbers of spores, thus starting a new series of infections.

8 0

2 years ago

1. Suppose the synthesis of an amino acid was accomplished by four enzymes encoded by four genes that formed an operon. Draw a m

vivado [14]

I have attached lac operon model having 4 genes. See attachment for better understanding.

Answer:

The Lac operon is controlled by two signals.

Initiation

Glucose and lactose concentrations control the initiation of transcription of the Lac operon through their effects on the Lac repressor protein and Cap.

Lactose absent (Repression)

When lactose is absent, the Lac repressor binds the Lac operator and shuts off expression of the operon.

Lactose present (Transcription)

Addition of lactose increases the intracellular concentration of a related compound, allolactose. allolactose binds to the Lac repressor, causing it to undergo a conformational change that releases its grip on the operator DNa.

Glucose absent (Repression)

When glucose is absent, cyclic aMp (red triangle) is produced by the cell and Cap binds to DNA.

Glucose present (Transcription)

LacZ, the first gene of the operon, encodes the enzyme b-galactosidase, which breaks down lactose to galactose and glucose.

7 0

3 years ago

Which zone within the open-ocean zone is home to the most organisms?Which zone within the open-ocean zone is home to the most or

BabaBlast [244]

Answer:

epipelagic zone

Explanation:

The epipelagic zone is home to most organisms because it is the sunlit upper layer of the ocean. it is also know as the photic or euphotic zone

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2 years ago

Many organelles contribute to the proper functioning of eukaryotic cells. Identify and describe four organelles that contribute

Hatshy [7]

Answer:

The four organelles that contribute to the synthesis, transport, packaging, and export of proteins to the extracellular environment are Nucleus, RIBOSOMES, rough endoplasmic recticulum and Golgi apparathus.

Explanation:

The nucleus is the organelle that produced RIBOSOMES.

RIBOSOMES are organelles responsible for protein synthesis production of proteins.

The protein produced by the RIBOSOMES are then gathered in the rough endoplasmic recticulum . It then export and transport the protein to Golgi apparatus. The Golgi apparatus modifies and package the protein.

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3 years ago

What are the structures of a villi?

daser333 [38]

What the other person said!

3 0

3 years ago

Read 2 more answers