If a population had no phenotypic variation, why would we not expect natural selection to act on this population?.

A bilayer of self-arranging , tail-to-tail phospholipid molecules makes up the cell membrane (Option c).

The phospholipids make up the majority of the lipid bilayer.

Polar phosphate heads and hydrophobic non-polar fatty acid tails make up these phospholipids.

The arrangement of phospholipids in water is that their hydrophilic phosphate heads face the outward aqueous side and their hydrophobic fatty acid tails face each other inside the lipid bilayer.

In summary, phospholipid molecules that self-arrange tail-to-tail form a bilayer that makes up the cell membrane (Option c).

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The options to include in the explanation are:

The immune system is responsible for protecting our bodies from harmful substances and pathogens that enter the body. It has a remarkable way of adapting to the constantly evolving structure of pathogens

To do so, one of the roles of the immune system is to monitor bodily fluids for the presence of pathogens.

Another role of the immune system is for the cells of the immune system to interact with all of the tissues and organs of the body and to distinguish bodies' cells from those of invaders

The immune system cells may be non-specific and involved in the general immune response or are specific and capable of targeting a specific type of pathogen.

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The complete question is found in the attached image

Answer:

C

Explanation:

not all animals have backbones (ex. crabs, worms, insects and spiders), and while all animals are heterotrophs, not all animals are symmetrical. so by process of elimination it'd be C.

Answer:

c

Explanation:

not all animals have backbones

Chemosynthesis occurs in bacteria and other organisms and uses the energy released by inorganic chemical reactions to create food. All chemosynthetic organisms use the energy released by chemical reactions to produce sugars, but different species use different pathways.

For example, chemoautotrophs are organisms that participate in chemosynthesis. These include specific bacterial groups such as sulfur-oxidizing gammaproteobacteria, epsilon proteobacteria, neutrophilic iron-oxidizing bacteria, and specific archaea such as methanogenic archaea.

Chemosynthesis is the process by which bacteria make food glucose using chemicals rather than sunlight as their energy source. Chemosynthesis takes place near hydrothermal vents, and the methane seeps deep into the ocean where no sunlight hits. Chemosynthetic bacteria essentially consist of a group of autotrophic bacteria that use chemical energy to produce their own food.

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The atomic number consists of only the number of neutrons. Atomic mass also includes the number of protons. Option A.

The atomic number is the number of protons in an atom. On the other hand, the number of neutrons for a particular element can vary. Together, the number of protons and the number of neutrons determine the element's mass number. The main difference between atomic number and mass number is what the atomic number indicates.

Indicates the number of protons present in the atom, and the mass number indicates the total number of protons and the number of neutrons present in the atom. Since atoms are electrically neutral, the number of positively charged protons must equal the number of negatively charged electrons. Since neutrons do not affect the charge, the number of neutrons does not depend on the number of protons and varies even between atoms of the same element.

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It is true that the Zoysiagrass has greater low-temperature hardiness than centipedegrass.

Zoysia is a genus of creeping grasses widespread across much of Asia and Australia, as well as various islands in the Pacific. These species, which are also known as zoysia or zoysiagrass, can be found in grasslands or coastal areas. It is a popular choice for fairways and teeing areas at golf courses.

Zoysia grasses (Zoysia spp.) are severely limited in their growth by low temperatures. Zoysia grasses' low-temperature tolerance and, more specifically, the low-temperature tolerance of various organs were the focus of this investigation.

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Answer:

pipetide bond

Explanation:

two amino acids are always joined together by a pipetide bond

mental representations based on general characteristics and open to new definitions when describing cultures are called as stereotypes.

A stereotype is an established, overly generalized opinion about a specific group or class of persons in social psychology. When we stereotype, we imply that a person possesses a wide range of traits and skills that we presume all members of that group possess. A "hells angel" biker, as an illustration, wears leather clothing.

Since they minimize the amount of processing (i.e. thinking) required when meeting a new individual, stereotypes are a significant way in which we simplify our social world.

Stereotypes cause social categorization, which is one of the causes of prejudiced attitudes (i.e., a "them" and "us" mentality) and, ultimately, the formation of in-groups and out-groups.

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Without sufficient vitamin e, red blood cells in infants can rupture due to a condition called hemolytic anemia the infant can become anemic.

Anemia refers to a group of conditions and diseases in which the red blood cells are unable to transport sufficient oxygen to all body cells in order to perform cellular respiration, which is a severe problem because when can not metabolize foods.

Therefore, with this data, we can see that anemia is due to the lack of oxygen and damage in red blood cells, which is associated with the hemolysis of these cells.

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Prokarya was not one of the groups described in Woese's tree of life analysis.

Who was Carl Woese?

Carl Richard Woese was an American biophysicist and microbiologist born in 1928, famous and well known for defining the Archaea (a new domain of life) in 1977 through a pioneering phylogenetic taxonomy (tree of life) of 16S ribosomal RNA, a technique that has revolutionized microbiology. Woese’s tree was constructed from comparative sequencing of the genes that are universally distributed, present in every organism, and conserved (meaning that these genes have remained essentially unchanged throughout evolution).

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Answer:

If meiosis did not halve the number of chromosomes before gametes are made​, the union of the two gametes during fertilization would result in an offspring with twice the normal number of chromosomes.

Fireflies emit light using a similar process to how glow sticks do. The cause is chemiluminescence, a chemical reaction that results in light.

By supplying oxygen to the other chemicals required to make light, a firefly can control the start and stop of the chemical process, and therefore, the start and stop of its light emission. Inside the insect's lighting organ, this takes place. The light bulb turns on when there is oxygen available, and turns off when there isn't any. Since insects lack lungs, they use a complex network of progressively smaller tubes called tracheoles to carry oxygen from the atmosphere to their internal cells. Given the comparatively slow pace of a muscles that control oxygen transport, it has long been unknown how some firefly species manage such a high flash rate.

Fireflies presumably first developed the capacity to glow as a defense against predators, but they now primarily employ this ability to attract mates. It's interesting to note that not all fireflies emit light; some species fly throughout the day and appear to rely on pheromone scents to locate one another.

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Identical copies of DNA are known as O sister chromatids and they are attached at a structure called the  centromere.

A chromatid is described as one of the two identical halves of a chromosome that has been replicated in preparation for cell division.

Deoxyribonucleic acid(DNA) is a polymer composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses.

Generally the DNA and ribonucleic acid are nucleic acids.

In conclusion, the DNA is the hereditary material in humans and almost all other organisms.

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Same amounts of enzymes and different pH values alone affects an enzyme's ability to function.

The proteins known as enzymes aid in accelerating chemical processes in our bodies. Digestive health, liver health, and many other processes depend on enzymes. A certain enzyme might be unhealthy in excess or insufficient amounts. Our blood contains enzymes that can aid medical professionals in examining us for wounds and illnesses. Proteins known as enzymes assist our bodies' chemical reactions, or metabolism, to move more quickly. Others are broken down while others are built. Enzymes exist in every living organism.

The assistance in digesting that enzymes provide is one of its most crucial functions. When we consume, our food is converted into energy through the process of digestion. Our stomach, intestines, pancreas, and saliva, for instance, all contain enzymes. Proteins, lipids, and carbs are all broken down by them.

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The binomial nomenclature system of classifying organisms was developed by Linnaeus.

Binomial nomenclature- Binomial nomenclature is a method of naming biological entities that consists of two terms: the first one designates the genus of the organism, and the second one designates the species.

Genus- Genus is the biological categorization that comes after family & species, consisting of isolated species that demonstrate exceptional differentiation or a group of structurally and phylogenetically related species (monotypic genus).

Species- A species is a group of organisms made up of similar individuals that are potential of interbreeding or gene exchange. The most fundamental unit of classification in biology is the species, which also serves as a taxonomic rank.

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Answer: an organ donation is when you donate one of your organs to someone who needs it more than you

Explanation:

if you have a heart donation it usually happens right after you die so your heart is completely intact

The qualitative data in the example are -

Helicona

Throated carib

Eulampis jugularis

What is qualitative data ?

qualitative data is data which expressing a certain quantity, amount or range. Usually, there are so many measurement units associated with the data e.g. metres, in the case of the height of a person. It makes sense to set the  boundary limits to such as  data, and it is also very  meaningful to apply to the arithmetic operations to the data.

qualitative data describes the  qualities or characteristics. It is collected using the  questionnaires, interviews, or observation, and the  frequently appears in the  narrative form. For example, it could be notes taken by  during a focus group on to the quality of the food at Cafe Mac, or responses from an the open-ended questionnaire.

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A season refers to the subdivision of the year into different categories based on certain factors such as the length of day or night, the weather condition, and the growth pattern of some living organisms.

Seasons refer to the subdivision of the year into different categories based on certain factors. These factors include:

The revolution of the earth influences seasons. Rainy seasons are characterized by rainfall while dry seasons are characterized by the absence of rainfall.

Summer periods are characterized by longer days and shorter nights while winter periods have longer nights and shorter days.

Some plants complete their life cycle in a single growing season. Such plants are called annual plants. Some complete theirs in 2 years - biennial. Others complete their life cycle in more than 2 years. They are known as perennial plants.

Examples of annual plants include corn, potato, and onions. Examples of perennial plants include dates, orange, etc.

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CDKs and cyclin is the correct answer for your question

Boron is the metalloid that behaves as a metal. Metalloids like arsenic, antimony, and tellurium behave like non-metals.

Metalloids are the elements that are the intermediate of metals and non-metals. They exhibit the properties of both. They behave like semi-conductors. The examples include Boron, germanium, silicon, antimony, arsenic, tellurium and Pollanium. Boron is a metalloid that can behave as a metal because it has only three electrons on its outer shell and it can donate them like metals.

Non-metals are the elements that do not have metallic properties like conducting electricity, ductility, malleability, etc. Some metalloids that have more than four electrons on their outer shell can also behave like non-metals because they can gain electrons. Examples are arsenic, antimony, etc.

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The following structures are illuminated in the order listed.b).cornea, aqueous humor, lens, vitreous humor.

The human eye is a sensory organ designed to respond to light to enable vision. The structures in the eye enable it to distinguish between variations in color, movement, and light.

Our eyes serve as our light collectors and provide sight. Its precise structures allow for the conversion of incoming light energy into electrochemical energy. This activates the brain's visual centers, making us feel as though we are seeing. One of the five senses that serve as "gatekeepers" for our bodies is sight.

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Dinoflagellates are unicellular eukaryotic protists that are neither plants nor animals. Dinoflagellates are tiny, single-celled organisms with a long body and two arm-like flagella.

Dinoflagellates are unicellular protists with two flagella. Dinoflagellates are usually marine plankton, however they can also be found in freshwater settings. Apart from diatoms, photosynthetic dinoflagellates are the most numerous group of eukaryotic algae. Dinoflagellates have traits of both plants and animals. Gonyaulax is a genus of dinoflagellate algae that live in marine, fresh, or brackish water. Several planktonic species are toxic and are sometimes abundant enough to color the water and induce the phenomena known as red tide, which can kill fish and other creatures.

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Answer: The combining form for skull is crani/o.

Cranio refers to combining the form of a skull especially covering the brain.

In order to symbolize the term cranium, or the skull, specifically the portion that covers the brain, the combining form "Cranio-" is employed as a prefix.

It is regularly used in medical terminology, particularly in anatomy, sometimes referred to as the braincase the cranium is the portion of the skull that houses the brain.

The cranium is made up of facial bones and cranial bones, which surround and guard the brain spinal cord connects to the brain through a hole at the bottom of the skull.

Therefore covering the brain Cranio is a combined form of the skull made of certain facial bones.

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Respiration occurs through the joint action of the respiratory system and the circulatory system. Five organs involved in the respiratory system are B) lungs, C) diaphragm, D) trachea, E) larynx, and G) nose

Respiration refers to the gas interchange between the body and the environment. The body takes oxygen from the environment and releases carbon dioxide.

The whole process involves two systems, the circulatory system and the respiratory system, and goes as follows,

1) First, through Inhalation, the body intakes clear oxygenated air through the nose or the mouth.

This air moves toward the lungs, passing along the pharynx, larynx, trachea, bronchia, bronchiole, and alveoli.

Once in the alveoli, gas interchange occurs between the lungs and blood.

2) Oxygenated blood takes oxygen to the body tissues and removes carbon dioxide, becoming deoxygenated blood. It returns to the lungs and releases carbon dioxide there.

3) Finally, through exhalation carbon dioxide is released into the environment.

Inhalation and exhalation are possible due to the diaphragm motion.

According to this framework, the FIVE organs that are a part of the respiratory system are

B) lungs

C) diaphragm

D) trachea

E) larynx

G) nose

Notice that even when the heart has a significant role during respiration, it is part of the circulatory system.

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The amount of oxygen in the bloodstream of someone at high altitude will be higher than someone at lower altitude because the higher altitude provides less resistance to oxygen molecules.

The air pressure at high altitude is also lower, so the oxygen molecules have more space to move around and enter the bloodstream. The body also compensates for the lower oxygen levels by increasing the breathing rate and producing more red blood cells to carry oxygen to the cells.The amount of oxygen entering the bloodstream of someone at high altitude will be lower than someone at a lower altitude.

This is because the air pressure is higher at high altitudes, which makes it harder for oxygen to diffuse into the bloodstream. Additionally, the air is colder at high altitudes, which can cause the blood vessels to constrict, further reducing the amount of oxygen that enters the bloodstream.

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Lamellar bone is remodeled from woven bone and its matrix is arranged in distinct layers or sheets known as lamellae.

Lamellar bone is a secondary bone formed as a result of woven bone remodeling. Lamellar bone is mechanically robust and contains a consistent parallel alignment of collagen into sheets (lamellae). It is highly organized in concentric sheets, with osteocytes constituting a substantially lower fraction of the surrounding tissue. At the age of two or three years, woven bone is replaced by lamellar bone. Lamellar bone is a mature bone formed by modifying young braided bone. Lamellar bone is highly structured, and its anisotropic features are due to its stress-oriented collagen. These arrays' orientations differ in each sublayer with regard to both collagen fibril axis and crystal layers, resulting in a complicated rotational plywood-like structure.

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