The following are examples of extracellular enzymes produced by some bacteria are

Answer:

the main purpose of the primary election is to get new people in office with new rules

Explanation:

In the Awash River valley in the Afar region of Ethiopia, Bouri is the location of paleoanthropological digs. It is well known for its 2.5-million-year-old Australopithecus garhi bones.

Some of the oldest indications of stone tool use in the history of human evolution can be seen on animal bones discovered there that have cut markings. Approximately one million years old fossils may also be found in the Bouri site, including a well-preserved Homo erectus skull with a brain that is more than twice the size of A. garhi. Stone tools from the early Acheulean industry are widespread. The site's animal fossils provide evidence of an open grassland setting. Some of the earliest known stone tools and animal bones that have been cut and cracked apart using stone tools are linked to Australopithecus garhi fossils. Therefore, it's probable that this species was among the first to use stone tools and to devour enormous animals' meat and bone marrow.

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Answer:ok so um im doing this rn in middle school 8th grade and the #6 wavelength

#7 trought

#8 crest

#9 amplitude

#10 equilibrium

Answer:

Kinesthetic

Explanation:

Even with your eyes closed you can tell where your limbs are located and in which direction you are going, thanks to the kinesthetic nerve.

Answer:

B. Vestibular

Explanation:

edge 2022

Answer:

Belize Barrier Reef

Belize Barrier Reef, coral reef that is second in size after the Great Barrier Reef of Australia and is the largest of its kind in the Northern and Western hemispheres.

The ribbon eel (Rhinomuraena quaesita), also known as the leaf-nosed moray eel or bernis eel, is a species of moray eel, the only member of the genus Rhinomuraena. What is now known as R. quaesita also includes the former R. amboinensis. R. quaesita was used for blue ribbon eels and R. amboinensis for black ribbon eels, but these are now recognized as the same species. The ribbon eel is found in lagoons and reefs in the Indo-Pacific ocean, ranging from East Africa to southern Japan, Australia and French Polynesia.[1][2] This species is widely distributed and is frequently seen by divers in Indonesian waters with their heads and anterior bodies protruding from crevices in sand and rubble habitats from very shallow to about 60 m.[3] Although generally placed in the moray eel family Muraenidae, it has several distinctive features leading some to place it in its own family, Rhinomuraenidae....[1]

Answer:

glucose

Explanation:

correct me if I'm wrong

Assuming the genes are not linked nor interacting with each other, the expected number of long stemmed plants with purple flowers, producing wrinkled peas, L-P-rr, is 288.

Let us name te alleles as follows

Cross) heter0zyg0us plant is self-crossed

Parental) LlPpRr

Gametes) LPR, LPr, LpR, Lpr, lPR, lPr, lpR, lpr

Assuming that these genes are not linked nor interacting with each other, to make the calcs easier we will make crosses considering each gene separately.

Parental) Ll  x  Ll

F1) 1/4 LL, 2/4 Ll, 1/4 ll

     3/4 long stem, 1/4 short stem

Parental) Pp  x  Pp

F1) 1/4 PP, 2/4 Pp, 1/4 pp

     3/4 purple flowers, 1/4 white flowers

Parental) Rr  x  Rr

F1) 1/4 RR, 2/4 Rr, 1/4 rr

     3/4 round peas, 1/4 wrinkled peas

Now, we will get the proportion of individuals with long stems, purple flowers, producing wrinkled peas, L-P-rr

Note: The symbol - is representing either a dominant or a recessive allele.

From the crosses, we know that

To get the proportion of individuals expressing all these traits together, we just need to multiply these values.

3/4 L- x 3/4 P- x 1/4 rr = 9/64 L-P-rr

Knowing that  the total number of plants is 2,048 and that there are 64 possible gametes combinations from this cross, we will use the proportion 9/64 to get the number of plants with these traits.

64 ------------- 2,048 plants

9 -------------- X = (9 x 2048) / 64 = 288 plants.

We expect to find 288 long stemmed plants with purple flowers, producing wrinkled peas.

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Answer:

No.

Explicación:

No, la planta no podrá dar fruto en una caja oscura porque para su crecimiento la planta necesita luz solar y sin luz solar no se produce fotosíntesis y sabemos que en el proceso de fotosíntesis, las plantas preparan su propia comida y crecen en tamaño. Este proceso de fotosíntesis solo ocurre en presencia de luz solar, por lo que en la oscuridad no hay luz solar, por lo que no se produce la fotosíntesis y la planta morirá.

The gross feature that correlates with the shapes of the oxygen binding curves for hemoglobin from a variety of terrestrial mammals is their altitude of habitation.

Compared to animals that live at low elevations, those that live at high altitudes have haemoglobin with a higher affinity for binding oxygen.

The decreasing oxygen availability at high altitudes may be the cause of this decline in oxygen binding affinities.

Organisms may have evolved haemoglobin with a higher oxygen binding affinity in order to efficiently bind and transport the scarce oxygen present in their environment.

This would allow them to extract enough oxygen from the lower oxygen levels at high altitudes. As a result, their haemoglobin has a decreased affinity for binding oxygen.

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Answer: i think thats like a personal thought question but

Explanation: its. big, mutilple universes, depending on ur belifs talk abt how it was created. There are 9 planets, we cant go out of our amtospher into space beacause of no oxygen.

Answer:

A,T,G,C

Explanation:

all nucleartide are made by sticking a phosphate group

Answer: It's A!!

Explanation:

Answer:

diploid spores

In seedless plants, haploid gametophytes are produced from a diploid spores that undergo mitosis.

Explanation:

Cerebral Palsy is often classified by severity level as mild, moderate, severe, or no CP.

A series of conditions known as cerebral palsy (CP) have an impact on a person's mobility, balance, and posture. The most typical motor impairment in children is cerebral palsy. Cerebral refers to something involving the brain. Palsy refers to muscle weakness or functional issues.

Life expectancy of a person with cerebral palsy ranges from 30 years to 70 years.

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Answer:

C. Fats

Explanation:

Answer:

Early Cells Lab

Step by step

1. How much did the egg change in size? (answer should be in centimeter)

2. Was your hypothesis correct? Why or why not

Safety Notes

1.Wash your hands carefully after each time you touch the egg.

2.Be sure that you have permission and supervision from a guardian before completing this lab activity.

3.The egg and vinegar are safe for kitchen drains, but check with a guardian for the preferred method of disposal in your kitchen.

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Explanation:

In an Attenuated Total Reflection (ATR) instrument, the basis by which infrared (IR) radiation passes into the sample and back to the detector is through the principle of internal reflection.

Here's a description, along with some simplified drawings, to illustrate the basis of this process:

1. ATR Crystal: The ATR instrument consists of a special crystal, typically made of materials like diamond, germanium, or zinc selenide. The crystal has a high refractive index, allowing for efficient transmission and reflection of IR radiation.

2. Incident IR Beam: The first step involves the generation of an incident IR beam. This beam is emitted from the IR source and directed towards the ATR crystal surface. The incident beam consists of various wavelengths of IR radiation.

3. Reflection at the Crystal Surface: When the incident IR beam encounters the ATR crystal's surface, it undergoes partial reflection and partial penetration into the crystal. The exact angle at which this occurs is known as the critical angle.

4. Internal Reflection: Once the incident beam penetrates the crystal, it undergoes a phenomenon called total internal reflection. The beam propagates through the crystal material while continuously reflecting at the crystal's internal boundaries.

5. Sample Interaction: As the IR beam propagates through the crystal, it interacts with the sample that is in contact with the crystal surface. This interaction occurs at the interface between the crystal and the sample.

6. Absorption by the Sample: At the crystal-sample interface, some of the IR radiation is absorbed by the sample. The absorbed energy causes molecular vibrations and rotations within the sample.

7. Reflected Beam: After interacting with the sample, a portion of the incident beam is reflected back towards the crystal.

8. Exit from the Crystal: The reflected beam exits the crystal and travels back towards the detector.

9. Detection: The exiting IR beam is captured by the detector, which measures the intensity of the IR radiation at various wavelengths.

Here is a simplified drawing illustrating the basic process:

  +---------------------+

  |                          |   <--- Incident IR beam

  |   ATR Crystal   |

  |                          |   ---> Reflected beam

  +---------------------+

            |

            |  <--- Sample

            |

            |

         Detector

It's important to note that this description provides a simplified overview of the ATR technique, and the actual mechanism may involve additional factors and considerations. Nonetheless, it offers a general understanding of how IR radiation passes into the sample and back to the detector in an ATR instrument.

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Water pollution can be sourced from mining activities.

Hence, the correct option is D.

Water pollution can arise from various sources, including both point sources and nonpoint sources. Point sources refer to specific, identifiable locations where pollutants are discharged into water bodies, such as industrial facilities or wastewater treatment plants. Nonpoint sources, on the other hand, are diffuse and do not have a single point of discharge. They include activities like agricultural runoff, urban runoff, and atmospheric deposition.

While nonpoint pollution sources like fertilizer runoff from farmland (mentioned in option A) and organic matters from feedlots (mentioned in option B) can contribute to water pollution, they are not the only sources. Point sources, such as industrial discharges and wastewater from various activities, can also release pollutants into water bodies.

Option C is incorrect as water pollution is indeed a serious problem for residents and ecosystems. Contaminated water can have adverse effects on human health, aquatic life, and ecosystems, impacting water quality, biodiversity, and the availability of clean drinking water.

Option D is correct as mining activities can contribute to water pollution. Mining operations often involve the extraction of minerals and can generate various pollutants, including heavy metals, acids, and sediments, which can contaminate nearby water bodies if not properly managed. The discharge of mining wastewater, runoff from mine sites, and leaching from mining waste can all contribute to water pollution.

In summary, water pollution can originate from a variety of sources, including both point sources and nonpoint sources. It is a serious issue that can arise from activities such as mining, industrial discharges, agriculture, and other human activities.

Hence, the correct option is D.

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Explanation:

cells must be attached to a substrate or extracellular matrix of a tissue.

Most animal cells exhibit anchorage dependence, which means that in order to divide cells must be attached to a substrate or extracellular matrix of a tissue. Thus, the correct option for this question is D.

Anchorage dependence may be defined as the process of increase in proliferation that is observed when cells are permitted to attach to a solid surface. It ensures that each type of cell in the body survives and divides when only it is appropriately allowed to do the same.

The process of cell division is controlled through two processes which are known as mitosis and meiosis. The extracellular matrix of the tissues is directly connected to the cell that it completely surrounds. Some of the key connectors are integrins, fibronectin, etc.

Therefore, cells must be attached to a substrate or extracellular matrix of tissue in most animal cells that exhibit anchorage dependence. Thus, the correct option for this question is D.

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Plant and animal cells differe in some of their structures, like the cell wall, chloroplasts, and a big vacuole present in the plant cell but not the animal cell. D) Only organism 1 uses solar energy to make energy-rich compounds.

Both the animal and plant cells are eukaryotic. They carry their genetic material in the nucleus and mitochondria. Organelles are located in the cytosol, and both of them are surrounded by a protector cell membrane.

However, they have some differences:

Cell wall: A rigid structure that provides support and protection.

• Animal cells do not have a cell wall. They are only surrounded by the cell membrane, which is flexible so they can adopt different shapes.

• Plant cells have a wall, so their shape is usually prismatic and regular. The cell wall is composed mainly of cellulose.

Chloroplast: these are organelles that accumulate chlorophyll.

• Animal cells do not have chloroplasts because they do not photosynthesize.

• Plant cells have chloroplasts, and they are in charge of the photosynthesis process that allows plants to release oxygen. These organelles use solar light as the source of energy.

Vacuoles:

• Animal cells have many and small vacuoles whose function is to store water, ions, and waste intracellular substances.

• Plant cells have a unique big-sized vacuole that might occupy almost 90% of the cell. Their principal function is to store water and keep the turgidity. When the vacuole gets empty, the plant loses rigidity.

Other differences are:

The animal cell has centrioles, while the vegetable cell does not.

Plasmodium, chromoplasts, and glyoxysomes are present in the vegetable cell but not in the animal cell.

Option D is correct. Only organism 1 uses solar energy to make energy-rich compounds.

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Variations contributes to evolution through : ( D ) Variation produces a great variety of advantages for natural selection to select, through the process of Mitosis

Gene variants affect evolution, evolution is the process by which population changes over generations and these changes are caused by genetic variations which produces a great variety of advantages for natural selection to select through the process of mitosis. Gene alteration introduces different traits in organisms which are advantageous.

Hence we can conclude that Variations contributes to evolution through Variation produces a great variety of advantages for natural selection to select, through the process of Mitosis

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Answer:  C. Nick believes he did well on the exam because the exam was easy.

Explanation:

Nick is relating his performance on the exam to an external factor (the difficulty of the exam being easy).

All the other answers are relating the exam to internal factors such as intelligence, personal knowledge, and effort.

Answer:

C.

Explanation:

right on edg:))

The goal of DNA replication is to produce two identical copies of the original DNA molecule, this process occurs during the S phase of the cell cycle.

DNA replication is the process by which DNA is duplicated before cell division. It takes place in the nucleus of a cell, during the S phase of the cell cycle. The goal of DNA replication is to produce two identical copies of the original DNA molecule.There are three main steps in DNA replication:1. Initiation: During this step, the DNA double helix is unwound by enzymes called helicases. This creates a replication fork, which is the site where DNA replication occurs.2.

Elongation: During this step, new DNA strands are synthesized. This is done by adding complementary nucleotides to the original template strand, using the enzyme DNA polymerase.3. Termination: During this step, the replication forks meet at the end of the DNA molecule, and the process is complete. The result is two identical copies of the original DNA molecule.

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Answer:

B.

Explanation:

Have a nice day :),and hope this helps

Answer: B. insulin and human growth hormone.

Explanation:

Answer:

oxygen

Explanation:

The spines of a cactus are exactly not the leaves, but they are the solid hard part that reduces the rate of transpiration, so as to level the water constant in the cactus' body. They are important as it can reduce the animals from eating the cactus.

However, camels have thick jaws and can eat cactus easily .

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(Answered by Benjemin)

Answer:

A) Iron

Explanation:

Iron is the element that is important for the chemotrophs in the ocean because the plants used this iron for making different compounds necessary for plant's survival. Chemoautotrophs uses inorganic energy sources, of which hydrogen sulfide, elemental sulfur, ferrous iron, molecular hydrogen, and ammonia are most important. Chemoautotrophs are organisms that are able to use chemical energy obtained through the oxidation of reduced compounds.

Answer:

helium

Explanation:

i just got it right

Answer:

No.

Explanation:

Gut bacteria actually helps digest our food and creates a process that allows us to eat and stay alive. Without these crucial bacteria we might not be alive

Cohesion and adhesion are two properties of water that allow it to move up a plant. Cohesion is the ability of water molecules to stick together, creating a surface tension that allows water to move in a cohesive column.

Adhesion is the ability of water molecules to cling to other surfaces, such as the walls of a tube or the side of a plant stem. This allows water to move along the stem, rising against the force of gravity.The combination of these two properties creates a process known as capillary action, cohesive force which is the ability of water to move up a plant stem due to surface tension. This process is driven by the attraction between water molecules and the walls of the tube. As the water molecules move up the tube, they pull more water molecules up behind them, creating a continuous column of water that rises up the stem. Capillary action is the primary mechanism that allows plants to absorb water from the soil and transport it up to the leaves and other parts of the plant.

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