In which changes of state do atoms lose energy? Check all that apply

We need 7,000 kg of grain to produce 70 kg of human biomass, given the ecological transfer efficiency of 10 percent. The answer is d. 7,000 kg.

First, let's define what ecological transfer efficiency is. It refers to the amount of energy that is transferred from one trophic level to the next. In this case, we are given that the ecological transfer efficiency between each trophic level is 10 percent. This means that only 10 percent of the energy from one level is passed on to the next level.

Now, let's look at the question. We are told that grain is eaten by cows, and cows are eaten by humans. We need to calculate how much grain is required to produce 70 kg of human biomass, given the ecological transfer efficiency of 10 percent.
To start, we need to figure out how much cow biomass is required to produce 70 kg of human biomass. Since we know that only 10 percent of the energy is transferred from one trophic level to the next, we can use the following calculation:
70 kg human biomass / 10 percent ecological transfer efficiency = 700 kg cow biomass
So, we need 700 kg of cow biomass to produce 70 kg of human biomass. Now, we need to figure out how much grain is required to produce 700 kg of cow biomass.
Assuming that cows have a similar ecological transfer efficiency to humans (i.e. only 10 percent of the energy from grain is passed on to the cow), we can use the following calculation:
700 kg cow biomass / 10 percent ecological transfer efficiency = 7,000 kg grain

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The answer to your question is D.

The appendicular musculature of the chicken forelimb and hindlimb is similar to that of other vertebrate groups in terms of their general anatomical arrangement and function, but there are also some differences.

Similarities:

1.The forelimb and hindlimb of chickens, like other vertebrates, consist of muscles that are responsible for movement and locomotion.

2.Both limbs have muscles that act upon the various joints, such as the shoulder joint and hip joint, to produce flexion, extension, abduction, and adduction movements.

3.Muscles in both the forelimb and hindlimb are organized into compartments or groups based on their specific functions and attachments.

4.The basic muscle types, such as flexors and extensors, are present in both limbs, allowing for coordinated movements.

Differences:

1.The forelimb of chickens is modified for flight, so it contains specific flight-related muscles like the pectoralis major, which is responsible for powering the downstroke of the wing.

2.The hindlimb of chickens is adapted for walking and perching, so it has muscles that aid in these activities, such as the gastrocnemius, which helps with leg extension during walking.

3.The relative size and strength of certain muscles may vary between the forelimb and hindlimb, reflecting their different functional demands.

4.The arrangement and attachment sites of some muscles may differ between the forelimb and hindlimb due to their different roles in movement and support.

5.The forelimb and hindlimb may exhibit variations in muscle proportions and overall muscle mass, reflecting the specific locomotor requirements of the chicken.

In summary, while the appendicular musculature of the chicken forelimb and hindlimb shares similarities with other vertebrate groups in terms of general organization and function, there are distinct differences due to the chicken's flight and walking adaptations. These differences highlight the adaptations and specialization of muscle groups to suit the specific needs and locomotor capabilities of the chicken.

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Zoologists extracted a chemical that Japanese beetles use to attract mates and used it in traps to reduce beetle populations. Scientists used pheromones.

Pheromones are substances released by one individual and ingested by another individual of the same species. Examples abound in animals, but their role in humans remains unclear because adults do not have a functioning vomeronasal organ to process animal pheromone signals. Pheromones are essentially a covert form of communication. They send signals from one individual to another of the same species. This elicits a response from anyone who receives these signals. Hormonal changes or certain behaviors. 

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Cellular respiration describes the process of oxygen and glucose and converting into water and carbon dioxide. Homeostasis is a term which refers to biological processes in which living things must maintain stable and equal conditions for survival. Cellular respiration which uses oxygen and glucose must be able to sustain life by releasing energy which is called ATP, the ATP which is produced enables many biological processes that keeps organisms alive. Cells need energy to grow, move, and function. The process of homeostasis enables cellular respiration to produce enough molecules which can sustain the development of the cell. Without homeostasis cellular respiration would cease to function and without cellular respiration the process of homeostasis would not occur. Homeostasis regulates how much molecules have to be expended in order to produce energy for the process of cellular respiration.

spinal cord cells are induced to develop as motoneurons under the influence of notochord.

What is a notochord?

The notochord is the defining structure of the phylum chordates; a group of animals that include humans. It has essential roles in vertebrate development as it is the primitive beginning to the backbone. It serves as a source of midline signals that pattern surrounding tissues and as a major skeletal element of the developing embryo. It appears in embryos as a small flexible rod made from cells from the mesoderm, which is one of the three layers of cells of embryos.

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Transcription and translation are processes that happens in both prokaryotes and eukaryotes, but in eukaryotic cells they take place in different sites than in prokaryotic cells. Therefore, C is incorrect.

In eukaryotic cells, the mRNA is extensively processed before it is ready to be translated, not in prokaryotic cells. Therefore, D is incorrect as well.

In eukaryotic cells, transcription and translation are separate processes, transcription takes place in the nucleus and translation takes place in the cytoplasm. In prokaryotic cells, transcription and translation both takes place in the cytoplasm, being a continuous process. Therefore, A is incorrect, E is wrong too and the correct answer is B. Transcription and translation are continuous processes in prokaryotes but not eukaryotes.

Answer:

Water moving across the earth in streams and rivers pushes along soil and breaks down pieces of rock in a process called erosion. The moving water carries away rock and soil from some areas and deposits them in other areas, creating new landforms or changing the course of a stream or river.

Explanation:

The peristaltic contractions of ureteral smooth muscle are primarily responsible for the flow of urine from the renal pelvis to the bladder.

The ureter is a muscular tube that contracts and relaxes in a coordinated manner, creating a wave-like motion that propels urine towards the bladder. Gravity can also play a role in urine flow, particularly when a person is in an upright position, but it is not the main driving force.

Osmotic gradients, which regulate the concentration of solutes in the urine, do not directly contribute to the flow of urine through the ureters. Similarly, pressure in the renal pelvis, while important for maintaining proper kidney function, does not actively propel urine through the urinary tract.

Overall, the peristaltic contractions of the ureteral smooth muscle are essential for moving urine from the kidneys to the bladder.

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Answer:

b

Explanation:

During extended, intense exercise, a person begins to tire and breathe heavily. If this person continues to exercise, his muscles will soon switch from aerobic respiration to anaerobic respiration

Answer:

D I think

Explanation:

An engineer might need to use passive construction when designing a heating and cooling system for a home in cooler climate and hot climates.

The engineers should ensure that he constructs a passive housing system. Windows in the living room must face true south or within 30 degrees of it according to passive design.

Any way of heating or cooling a home that doesn't involve energy input from the occupants or a mechanical device is considered passive heating and cooling.

To use passive heating, all of your doors and windows must be absolutely airtight. You should have double-paned or triple-paned windows since badly built ones will allow the heat from the sun to just flow back out. The ability of the window to retain internal heat and keep out outside air improves with the number of layers of glass.

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Actuator: A power mechanism used to effect motion, or maintain position of the robot, by conversion of different energy types, such as electrical or mechanical processes, using liquid or air (for example, a motor which converts electrical energy to effect motion of the robot).

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The statement "Organisms that have had foreign genes inserted into them are called transgenic organisms." is True.

Transgenic organisms are organisms that have had foreign genes inserted into their genetic material. This process involves introducing a specific gene from one species into another, resulting in a new characteristic that was not present in the original organism.

Scientists use genetic engineering techniques to create transgenic organisms, which can provide various benefits, such as improved crop resistance to pests, enhanced nutritional content, and increased production of pharmaceuticals. However, there are also concerns regarding the potential risks associated with the release of transgenic organisms into the environment and their impact on ecosystems.

In summary, transgenic organisms are those that have had foreign genes deliberately inserted into their genomes, resulting in new traits or characteristics that can offer advantages in agriculture, medicine, and other fields.

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Answer:

A  

C

D

NOT SURE IF CORRECT

SORRY

Explanation:

Answer:

D.

Explanation:

Animal cells have a cleavage furrow which will pinch the cytoplasm into two nearly equal parts. While plant cells have a cell plate that forms halfway between the divided nuclei.

Answer:

When creating proteins from mRNA templates .

Explanation:

The nucleotide sequence on the RNA is translated into amino acid sequence of proteins. This is carried out by ribosomes.

Answer:

Human skin colour is so different around the world, and children do not always inherit the exact same colour as their parents it varies in colour, shade and tone. It is an example of polygenic inheritance because the human skin colour has multiple genes hence the name polygenic inheritance.

Explanation:

Answer:

its an example of polygenic inheritance

Explanation:

Answer:

This phenomenon is known as Exaptation.  

Explanation:

This phenomenon occurs in both anatomy and behavior and serves to provide an advantage to the organism or specie that undergoes exaptation. It is a process that can be considered as an opposite to adaptation.

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The most common bacteria found under fingernails are Staphylococcus and Streptococcus species, while the most dominant bacteria found in hair are Propionibacterium and Malassezia species.

This observation can be explained by the fact that these bacterial types are part of the normal flora of human skin and are commonly found in these areas. Staphylococcus and Streptococcus species are commonly found in moist environments and can easily thrive under fingernails due to the accumulation of dirt and sweat.

On the other hand, Propionibacterium and Malassezia species are commonly found in hair follicles and feed on skin oils, which can accumulate on the scalp and hair.

It's important to note that the presence of these bacteria does not necessarily indicate poor hygiene or health. However, proper hand and hair hygiene can help to reduce the buildup of bacteria and prevent the spread of infection.

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Answer:

I believe it is b,

Both viruses and bacteria can create large populations in a short time period.

The statement which correctly compares viral and bacterial reproduction is that both viruses and bacteria can create large populations in a short time period. Thus, the correct option for this question is B.

Virus replication may be defined as a type of process that involves the formation of biological viruses during the infection process in the target host cells. It is the mechanism by which a virus makes copies of itself.

It can lead to thousands of new viral particles being released into the host's body, infecting new cells and leading to the symptoms of the disease. The mode of reproduction for bacteria and viruses may absolutely different in each aspect.

Bacteria reproduce using binary fission. While Viruses reproduce through the use of host cells. But both can create large populations in a short time period.

Therefore, the correct option for this question is B.

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Answer:

a) Cats show incomplete dominance which means the kitten can be born with full length tails, short length tails and without tails.

b) The genotype of the parent will be heterozygous (Tt ) and the kittens will be:

Genotype | Fenotype

-TT | (long tail)

-Tt | (short tail)

-tt | (no tail).

Answer:

The correct answer is homeostasis.

Explanation:

A self-regulating procedure taking place within an organism, which permits them to sustain a stable internal condition level is termed as homeostasis. In case, if an organism fails to sustain homeostatic balance, the eventual result would be death. Water balance, temperature, salt concentration, and pH are some of the several internal conditions, which are required to maintain comparatively stability.

Some of the single-celled pond organisms like paramecium comprise contractile vacuoles, which remove additional water out of the cell. As water balance is a part of sustaining homeostatic balance for an organism, thus one can study homeostasis by witnessing the modifications within the contractile vacuole when the species is placed in distinct solutions.

Answer:

Explanation: Base is the lowest part or edge of something, especially the part on which it rests or is supported. Acid salts are a class of salts that produce an acidic solution after being dissolved in a solvent. Its formation as a substance has a greater electrical conductivity than that of the pure solvent.

The rate of change of the volume of the balloon (sphere) is 150π cubic cm/min. The formula for the volume of a sphere is given by; V = (4/3)πr³.

Given that the circumference of a balloon (sphere) is increasing at a rate of 3π cm/min and the radius is 5 cm, we have to find the rate of change of the volume of the balloon. We know that the formula for the volume of a sphere is given by; V = (4/3)πr³. Differentiating with respect to time gives; dV/dt = 4πr² × dr/dt

We know that the circumference of a sphere is given by; C = 2πr

Differentiating with respect to time gives; dC/dt = 2π × dr/dt

Now we can find the value of dr/dt from the above expression; dr/dt = dC/dt ÷ 2πPutting the given value in the above expression, we have ;dr/dt = 3π ÷ 2πdr/dt = 3/2 cm/min

Now substituting the value of r and dr/dt in the expression for dV/dt; dV/dt = 4πr² × dr/dt dV/dt = 4π(5)² × (3/2) dV/dt = 150π

Therefore, the rate of change of the volume of the balloon (sphere) is 150π cubic cm/min.

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Answer:

piwi-interacting RNAs (piwi-RNAs)

Explanation:

The piwi-interacting RNAs (piRNAs) are small non-coding RNAs (from 21 to 31 nucleotides) that are abundantly expressed in the animal germline in order to control the expression of target sequences. The piRNAs associate with PIWI proteins from the Argonaute family (AGO) to form an effector complex that binds to complementary target DNA/RNA sequences. These small ncRNAs target Transposable Element (TE) transcripts to suppress TE expression and thus maintain genome integrity. The piRNAs can also guide epigenetic remodeling complexes that suppress gene expression by methylation of target DNA sequences in the nucleus.

Horse tail (Equisetum) and Mucor  are not kept in the same kingdom as they belong to different kingdoms because they exhibit distinct characteristics and are classified based on their evolutionary history, cellular organization, and reproductive strategies.

Horse tails, also known as horsetails or Equisetum, are members of the plant kingdom, specifically the division Equisetophyta.

They are vascular plants that reproduce by spores.

Horse tails have a unique appearance, with jointed stems, whorls of tiny scale-like leaves, and reproductive cones at the tips of their stems.

They have a complex life cycle with alternation of generations, including both a sporophyte (dominant diploid phase) and a gametophyte (haploid phase).

Their cells have a rigid cell wall composed of cellulose, a characteristic feature of plant cells.

On the other hand, Mucor belongs to the kingdom Fungi.

Mucor is a genus of fungi within the phylum Zygomycota.

Fungi are eukaryotic organisms that lack chlorophyll and obtain nutrients through absorption.

They have a filamentous body structure called mycelium, composed of thread-like hyphae.

Mucor reproduces asexually through the production of spores, which are formed by the fusion of genetically distinct hyphae.

Fungi are heterotrophic, meaning they obtain their nutrients by breaking down organic matter in their environment.

The differentiation of horse tails (plants) and Mucor (fungi) into separate kingdoms is based on fundamental differences in their cellular organization, nutritional strategies, and reproductive mechanisms.

While both horse tails and Mucor are multicellular organisms, they belong to distinct lineages of life with diverse evolutionary histories, leading to their classification in separate kingdoms.

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The  properties of silicon and other metalloids include the following below:

This is referred to as chemical elements whose physical and chemical properties are in between or a mixture of those of metals and nonmetals and examples include the following below:

This elements are known to conduct electricity and heat  in a moderate manner which is why they are referred to as semiconductors and they also have metallic luster in which all are solids.

Other properties of metalloids include being brittle and easily broken which is a property of nonmetals which is why they are referred to as intermediates.

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