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13. Explain the difference between a light microscope and an electron microscope.
Live things, dead things and more magnification

The organ that regulates the levels of glucose is the Pancreas thanks to its insuline secretion. (option A)

Studying the relationships between organisms and their life processes can help scientists gain a better understanding of the history of life on Earth. They both undergo transcription and translation, which evolutionary scientist believe suggests they share a common origin- describes the relationship between protists and prokaryotes.

What is transcription?

A DNA segment is copied into RNA during transcription. Messenger RNA is created when specific DNA sequences are translated into RNA molecules that can encode proteins (mRNA). Non-coding RNAs are RNA molecules that contain copies of other DNA sequences (ncRNAs). Only 1% to 3% of all RNA samples are mRNA. A minimum of 80% of mammalian genomic DNA can be actively transcribed (in one or more types of cells), with the bulk of this 80% being ncRNA. In contrast, less than 2% of the human genome can be transcribed into mRNA (see Human genome Coding vs. noncoding DNA).

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A researcher who focuses on the interactions between organisms and their environments ecology.

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Genetic advantages are not absolute because a given genotype may be adaptive in an environment and deleterious in another condition, an example of this is the allele associated with sickle cell anemia that confers adptation to malaria.

An adaptive genotype is any gene combination such as a given allele that confers a certain adaptive advantage to the individual who carries such a mutation for a given environment.

Therefore, with this data, we can see that adaptive genotypes depend on the environment in which the individual lives and develops.

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The statement that genetic advantages are not absolute means that possessing certain advantageous genes or traits does not guarantee success or superiority in all circumstances or environments. While certain genetic traits may provide an advantage in specific conditions, their effectiveness can be influenced by various factors such as environmental changes, interactions with other organisms, or the presence of alternative strategies.

An example of genetic advantages not being absolute can be seen in antibiotic resistance in bacteria. Some bacteria possess genetic mutations that confer resistance to certain antibiotics. In environments where these antibiotics are present, the resistant bacteria have an advantage over non-resistant bacteria and are more likely to survive and reproduce. However, in the absence of antibiotics, these resistant bacteria may not necessarily have a significant advantage and may even be at a disadvantage compared to non-resistant bacteria. They might require additional energy or resources to maintain the resistance mechanism, making them less efficient in resource-limited conditions.

Furthermore, the effectiveness of genetic advantages can also change over time due to various factors such as evolutionary pressures, emergence of new threats, or shifts in the environment. For example, in response to the widespread use of pesticides, certain insect populations may develop genetic resistance to these chemicals. However, as the use of stronger or alternative pesticides increases, the previously advantageous resistance may become less effective or even detrimental, leading to a decline in the population.

These examples illustrate that genetic advantages are context-dependent and influenced by various factors. What may be advantageous in one situation or environment may not necessarily be advantageous in another. Evolutionary processes constantly shape and modify genetic traits, and the effectiveness of these traits can vary depending on the specific conditions and challenges faced by organisms.

Answer:

D

Explanation:

Makes sense, blue light gets reflected back to our eyes

When light waves hit an object, they interact with the matter that makes up that object. The properties of the matter determine how the light is absorbed, transmitted, or reflected.

What is Wave?

In physics, a wave is a disturbance that travels through space and time, usually accompanied by the transfer of energy. Waves can take many forms, including mechanical waves such as sound waves, water waves, and seismic waves, and electromagnetic waves such as radio waves, microwaves, infrared waves, visible light, ultraviolet rays, X-rays, and gamma rays. All waves have a characteristic frequency, wavelength, amplitude, and velocity, which determine their properties and behaviors. Waves can be described mathematically using wave equations, and their properties can be studied through experiments and observations. Waves play a fundamental role in many areas of science and technology, from communications and entertainment to medical imaging and materials science.

When you look at a window, some of the light is transmitted through the glass, while some is reflected off the surface of the glass. The amount of light transmitted and reflected is determined by the properties of the glass, such as its thickness and composition.

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Answer:

When we breathe, we inhale oxygen and we exhale carbon dioxide.    

Explanation:

1. For the cellular respiration, the body cells are provided with oxygen during gas exchange in respiration.

2. Oxygen gas diffuses from alveoli to the capillaries in our lungs.

3. Carbon dioxide is always transported in plasma or bounded to the hemoglobin or in some form of bicarbonate.

4. Carbon dioxide gas diffuses from our body tissues to the blood.

5. In our lungs, carbon dioxide gas diffuses from capillaries in to alveoli. Carbon dioxide leaves the body when we exhale.

6. During cellular respiration, we give give out and removes carbon dioxide from our body which is a waste product.

7. When we inhale, both oxygen and carbon dioxide gases enters the alveoli,

8. All the oxygen present in blood is bounded by hemoglobin and it is carried to all the body tissues and body and diffuses from our blood to our body tissues.

Assuming complete dominance for both genes, the parents genotypes are bbEe and Bbee. Among the offpring, the Expected genotypes are: 1/4 BbEe, 1/4 Bbee, 1/4 bbEe, 1/4 bbee. And the Expected phenotypes are: 1/4 brown eyes and normal vision, 1/4  brown eyes and express extremenearsightedness, 1/4 blue eyes and normal vision, 1/4 blue eyes and express extremenearsightedness.

Complete dominance is the inheritance pattern in which the dominant allele can hide the expression of the recessive allele when both of them are together in heterozygous individuals. In these cases, only the dominant phenotype can be expressed.

In the exposed example, we will assume complete dominance for both genes.

Gene for eye color

Gene for extremenearsightedness

Available data:

- blue eyed (bb)

- normal vision (E-)

- his mother was affected (ee)

The fact that his mother was affected suggests the man is heterozygous because he received one recessive allele from his mother. So he has normal vision but is heterozygous for the trait, Ee.

- Brown eyes Bb

- Affected by extremenearsightedness, ee.

Man and woman's Genotypes

Cross: blue-eyed man with normal vision with and affected brown-eyed woman

Parentals) bbEe   x   Bbee

Gametes) bE bE be be  

                Be Be be be

Punnett square)    bE        bE        be        be

                    Be    BbEe   BbEe   Bbee   Bbee

                    Be    BbEe   BbEe   Bbee   Bbee

                    be    bbEe   bbEe    bbee   bbee

                    be    bbEe   bbEe    bbee   bbee

F1) Genotypes

4/16 = 1/4 = 25% of the progeny is expected to be dihybrid, BbEe

4/16 = 1/4 = 25% of the progeny is expected to be Bbee

4/16 = 1/4 = 25% of the progeny is expected to be bbEe

4/16 = 1/4 = 25% of the progeny is expected to be bbee

    Phenotype

Parents genotypes: bbEe and Bbee

Expected genotype: 1/4 BbEe, 1/4 Bbee, 1/4 bbEe, 1/4 bbee

Expected phenotype: 14 brown eyes (Bb) and normal vision (Ee), 1/4  brown eyes (Bb) and express extremenearsightedness (ee), 1/4 blue eyes (bb) and normal vision (Ee), 1/4 blue eyes (bb) and express extremenearsightedness (ee).

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Complete question:

A heterozygous brown eyed (B) woman marries a blue eyed (b) man.The woman has extremenearsightedness, a condition that required her to wear glasses at a very young age.

Nearsightedness is recessive.

The man has normal vision, but his mother had extremenear-sightedness.

Determine the parents’ genotypes. Then, show the Punnett square

Answer:

During DNA packaging, long pieces of double-stranded DNA are tightly looped, coiled, and folded so that they fit easily within the cell. Eukaryotes accomplish this feat by wrapping their DNA around special proteins called histones, thereby compacting it enough to fit inside the nucleus

Answer: I do not know

Explanation:

There are no choices. Please complete your problem.

Answer:

What the actual truck

Explanation:

Answer:

The answer is A and C

Explanation:

A) Environmental factors can directly and indirectly lead to disease.

C) Pollution in the air and water are environmental factors.

Then the second part is C The water is the indirect cause of disease.

Answer:

A & C

Explanation:

The statement that is not true among these is; animals are not all descended from a common ancestor.

When one species is the ancestor of two or more other species later in time, the evolutionary biology concept of common descent applies. Modern evolutionary biology holds that the last universal common ancestor (LUCA) of all life on Earth, from which all living things are descended, is the true ancestor of all living things.

Multiple species descended from a single ancestral population through the process of speciation, which is known as common descent. The closer two species are linked, the more recent the ancestral population that they share. The last universal ancestor, which lived roughly 3.9 billion years ago, is the most recent common ancestor of every living thing today.

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Answer:

A.Photosynthesis

Explanation:

Because,it's main function is to produce Oxygen and Glucose by taking in CO2 instead of giving out...with H2O..

The answer is photosynthesis

- Burning of fossil fuels(these are the bones/particles of animals that have died thousands of years ago). When these fossil fuels are burned they lead to the production of carbon dioxide.

- Animal respiration- the cells in the body of animals helps in the production of carbon dioxide which is released into the atmosphere

- Plants decaying- when plants wither off due to lack of nutrients, they decay with time and then produce carbon dioxide.

- Photosynthesis- the end product of photosynthesis is glucose.

Hence the answer is photosynthesis

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1. The exocrine function is stimulated by this hormone produced in the anterior pituitary: follicle-stimulating hormone (FSH), and produces ova (eggs) in the female.

2. The endocrine function is stimulated by this hormone in the anterior pituitary: luteinizing hormone (LH), and produces estrogen and progesterone in the female.

3. The exocrine function is stimulated by this hormone produced in the anterior pituitary: luteinizing hormone (LH), and produces sperm in the male.

4. The endocrine function is stimulated by this hormone in the anterior pituitary: follicle-stimulating hormone (FSH), and produces testosterone in the male.

1. The exocrine function of the reproductive system in females is stimulated by the hormone produced in the anterior pituitary called follicle-stimulating hormone (FSH), which promotes the production of ovarian follicles. The exocrine product in females refers to the release of eggs or oocytes from the ovaries during ovulation.

2. The endocrine function of the reproductive system in females is stimulated by the hormone luteinizing hormone (LH) produced in the anterior pituitary. LH triggers the release of estrogen and progesterone from the ovaries, which regulate the menstrual cycle, promote the development of the uterine lining, and prepare the body for pregnancy.

3. The exocrine function of the reproductive system in males is stimulated by the hormone produced in the anterior pituitary called luteinizing hormone (LH), which stimulates the production of testosterone in the testes. Testosterone is the primary male sex hormone and is responsible for the development of male reproductive organs and secondary sexual characteristics.

4. The endocrine function of the reproductive system in males is stimulated by the hormone follicle-stimulating hormone (FSH) produced in the anterior pituitary. FSH promotes the production of sperm cells (spermatogenesis) in the testes.

Overall, the reproductive system has both endocrine and exocrine functions, with the anterior pituitary gland playing a crucial role in regulating these functions through the production of specific hormones.

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Answer:

D Solution

Explanation:

took the quiz on Flocab

Although it is typically the most expensive feed material, if used appropriately, it is also the one that has the highest chance of producing profitable outcomes.

As is the case with the majority of fruits, bananas only contain carbs and no protein or fat. Bananas have a negative image for not being "helpful" for weight loss because they have a higher energy content when compared to other fruits, such berries.

Over time, eating excessive amounts of protein can result in symptoms including foul breath, indigestion, and dehydration. It can also exacerbate kidney conditions.

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Answer:

False

Explanation:

A molecule can be defined as a particle that comprises of two or more atoms of an element that are bound together by a chemical bond. Molecules are usually electrically neutral. An example of a molecule is O2 (oxygen molecule); it comprises of two atoms of oxygen

A compound can be defined as a substance that is made of two or more different chemical elements that are bound together by a chemical bond which could either be an ionic bond or a covalent bond. An example of a compound is NaCl which is table salt; NaCl is a compound that is made up of one sodium element (Na) and one chlorine element (Cl) bound together by ionic bonds.

Therefore, when atoms combine, they form molecules, while a compound is a molecule that comprises of atoms of different elements. So we can say that not all molecules are compounds, but all compounds are molecules, hence molecule and compound can't be used interchangeably.

Explanation:

A manipulated variable is a variable that is changed by the researcher. A manipulated variable is also called an independent variable. A responding variable is a variable that the researcher predicts will change if the manipulated variable changes.

Answer:

Manipulated Variable: In a process that is intended to regulate some condition, a quantity, or a condition that the control alters to initiate a change in the value of the regulated condition.

Eg: The number of hours spent studying. This is the variable that the teacher manipulates to see how it affects exam scores. Response variable: The exam scores. This is the variable that changes as a result of the manipulated variable is changed.

Answer:

Pink snapdragons are a result of incomplete dominance

Answer:

Because roots get more water then the stem does, it absorbs at least 60% of the water, and if you use a nail that goes into water, it rusts, so that means that it's darker than others.

Explanation:

If you take a nail and place it under water, that means its getting 100% of the water, so it's the same thing with plants. Another reason that this is happening is that its a sign that a plant is unhealthy. So make sure to give it a lot of water( but not too much or it will drown) so it stays a healthy and happy plant. Hope this helps :3

Answer: Its true

Explanation: The order of fermentation rate using these substrates is arranged from highest rate to lowest (left to right) Glucose---sucrose---fructose--starch True False

It is true that the order of fermentation rate using these substrates is arranged from highest rate to lowest Glucose, sucrose, fructose, and finally starch.

Fermentation is a biological process that involves the action of enzymes to produce chemical changes in organic substrates.

It is narrowly defined in biochemistry as the extraction of energy from carbohydrates in the absence of oxygen.

Fermentation is a chemical process that breaks down molecules such as glucose anaerobically.

Fermentation is a chemical process that breaks down carbohydrates such as starch and glucose anaerobically.

Fermentation has numerous health benefits and is used to make alcoholic beverages, bread, yogurt, apple cider vinegar, and other products.

Fermentation serves many purposes, including adding new flavors and textures to food, extending food shelf life, making some nutrients more easily absorbed by the body, and providing a habitat for probiotics to grow and reproduce.

The fermentation rates for these substrates are listed in the following order: glucose, sucrose, fructose, and finally starch.

Thus, the given statement is true.

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Answer:

A. a single cell

Explanation:

Answer:

e the reason why because it's right

The fossil of an organism with a sprawling gait and middle ear bones, found in a 250-million-year-old rock layer.

historically, non-mammalian synapsids were believed to have advanced from reptiles, and consequently defined as mammal-like reptiles in classical systematics, and primitive synapsids were also known as pelycosaurs, or pelycosaur-grade synapsids.

Mammals belong to a larger institution of animals referred to as synapsids. these are vertebrate animals that produce amniotic eggs and have a single hole, or temportal fenestra, in the back of their eye socket. The sister organization to the synapsids are the sauropsids, all cutting-edge 'reptiles' (which includes birds) and their fossil family.

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The fossil that provided the strongest evidence for the discovery of a transitional species between early non-mammalian synapsids and mammals is: the fossil of an organism having a sprawling gait and middle ear bones, that was found in a rock layer that was 250-million-year-old.

Synapsids were the earliest known reptiles that were present during the Carboniferous period. The term synapsid refers to the fused arch. They evolved from the basal amniotes along with the Sauropsids.

Gait refers to the way of movement of any animal. Various animals have different types of gait or locomotion. These can be crawling, flying, walking, creeping, slithering or swimming.

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Answer:

Kettles form when ice detaches from a glacier. Eventually, it becomes wholly or partially buried in sediment and slowly melts, leaving behind a pit.

Answer:

A kettle lake is formed when an inactive block of ice breaks off of a glacier, as time goes on it gets buried sediment and begins to melt, as it melts it leaves behind a pit. Where eventually water will fill it up and the pit will become a body of water.

The options are;

A) biology; theory of relativity

B) geology; theory of continental drift

C) ecology; discovering new elements

D) astronomy; developing quantum mechanics

Answer:

B) geology; theory of continental drift

Explanation:

Looking at the options;

-theory of relativity is a topic in physics originated by Einstein. Thus, it is matched to physics and not biology.

- theory of continental drifts are related to plate tectonics where it explains how continents shift position on Earth's surface. This is a branch of Geography and is thus correctly matched.

- discovering new elements is a topic under chemistry and not ecology. Thus, this is not matched correctly.

-developing quantum mechanics is a topic in physics that deals with the relationship between energy and matterwith respect to atomic and subatomic scale. Thus, it is not well matched.

Therefore correct answer is option B

Answer:

the heart stops pumping as much blood to the brain which will lower the amount of funtion.