QUESTION 27
What entity can infect cells and take control over transcription and translation?

Bacteria: are single-celled microscopic organisms that are characterized by the presence of incipient nucleus and few membrane-less cell organelles.

Fungi: are eukaryotes that are characterized by the presence of chitin in the cell wall.

Cell Type: All bacteria are prokaryotes. All fungi are eukaryotes.

Answer:

photosynthesis removes carbon dioxide from the atmosphere, and cellular respiration puts it back. Photosynthesis releases oxygen into the atmosphere, and cellular respiration uses that oxygen to release energy from food

Explanation:

My response would be "lazy." It suggests that the subject lacks motivation to finish the current work.

Motivation is the cause of a behavior's initiation, continuation, or termination in both humans and other animals at a certain time. Motivational states are frequently interpreted as internal forces that produce a disposition to participate in goal-directed activity in the agent. Different mental states are said to compete with one another, and only the strongest state can determine behaviour. This implies that we can be inspired to act even when we don't. Desire is the classic example of a motivating mental state. However, several other states, such as goals or views about what one should do, can also serve as motivation.

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Answer: 13 is a trisomy

Explanation:

Answer:

Both studies support the concept that species operate within a narrow optimum temperature range and are coupled to enzymatic activity.

Explanation:

The studies shown in the question above started from the same concept to establish the scientific experiment and had the same objective related to the investigation as temperature changes in the environment where these organisms live influences the enzymatic activity and, therefore, the functioning of their organism, being able to including modifying the environment around them. In summary, we can say that the studies sought to support the concept that species operate within a narrow range of optimal temperature and are coupled with enzymatic activity.

Answer:

Explanation:

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The 6 adaptations of camel are : long legs, drinks large amount of water, excrete less urine,hump stores fat,padded feet and long eyelashes.

1. Camel have lengthy legs to keep your body out of the hot sand.

2. Camel consumes a lot of water when it is available and then stores it in its body.

3. Camel have much less urine in their excretions, and their dung is dry. None of them perspire. A camel can go for several days without drinking water since it loses very little water.

4. A camel's hump is where fat is stored. The hump functions as a fat or energy reserve in times of need.

5. The camel has padded feet, which are big and flat and make it easier for it to move around on the sand. The padded feet prevent it from sinking into the sand in opposition to the weight of its own body and the load it is carrying.

6. Camel have long eyelashes and hairs to shield their eyes and ears from flying dust particles.

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Answer:

Epithelial tissue

Explanation:

Epithelial tissue is one of the four basic types of tissue, whereas the other ones are muscle tissue, nervous tissue, and connective tissue. Epithelial tissue is composed of cells that make up the covering of the body surfaces and blood vessels throughout the body. This tissue plays many critical roles including, among others, protection (coverage), filtration, diffusion, absorption, secretion, excretion, etc. An example of epithelial tissue is the epidermis, the outermost of the three layers that form the skin.  Epithelial cells can be arranged in a single layer (i.e., simple epithelium) or in multiple (stratified) layers.

Answer:

2.5 x 10¹⁰ ppt

5.0 x 10¹⁰ ppt

1.0 x 10¹¹ ppt

Explanation:

The notation ppt refers to parts per trillion units, that is, how many parts of enzyme are there in 1 trillion parts. Percentage refers to the number of parts per 100 units. Converting the given values from percentage to ppt:

\(\frac{2.5}{100}=\frac{a}{1,000,000,000,000}\\a=2.5 *10^{10}\ ppt\\\\\frac{5.0}{100}=\frac{b}{1,000,000,000,000}\\b=5.0 *10^{10}\ ppt\\\\\frac{10}{100}=\frac{c}{1,000,000,000,000}\\c=1*10^{11}\ ppt\)

The concentration in ppt are:

2.5 x 10¹⁰ ppt

5.0 x 10¹⁰ ppt

1.0 x 10¹¹ ppt

1 Percent [%] = 10 000 000 000 Parts per trillion [ppt]

1%  = 10 000 000 000 ppt

2.5% = ?

Cross multiply

2.5% x 10 000 000 000 ppt / 1 %

= 25, 000 000 000 ppt

1%  = 10 000 000 000 ppt

5% = ?

Cross multiply

5% x 10 000 000 000 ppt / 1 %

= 50, 000 000 000 ppt

1%  = 10 000 000 000 ppt

10% = ?

Cross multiply

10% x 10 000 000 000 ppt / 1 %

= 100, 000 000 000 ppt

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Using the Glastier equation, the approximate time of death of the victim is 4:53 am.

The Glaister equation is a method for estimating the time of death based on the body's core temperature.

It states that the body temperature drops at a rate of about 1.5 degrees Fahrenheit per hour after death, until it reaches the ambient temperature.

To use the Glaister equation, we can subtract the rectal temperature of the body from the normal core body temperature of 98.6°F (37°C) and divide the result by 1.5°F per hour to estimate the number of hours since death.

In this case, the rectal temperature of the body is 89.4°F, so we can calculate the time of death as follows:

Time since death = (98.6°F - 89.4°F) / 1.5°F per hour

Time since death = 6.07 hours

Therefore, based on the Glaister equation, the approximate time of death would be around 4:53 am.

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Volcanoes and earthquakes occur in so many of the same areas because they are a consequence of plates movements. They occur at different plate boundaries.

First of all, by looking at both images, we can see that volcanoes and earthquakes are not randomly distributed around the world.

We can also see that, although they are distributed all around the globe, there is a notorious concentration of volcanoes and earthquakes in the pacific region.

There is an occurrence tendency in continuous areas.

If we pay attention to the white lines in the map, we will notice that the continuous areas where volcanoes and earthquakes occur coincide with plate boundaries.

For instance,

Although they occur in other areas too, volcanoes and earthquakes occur at plate boundaries.

Volcanoes occur at convergent and divergent boundaries

Earthquakes occur at transforming, convergent and divergent boundaries.

I. Divergent:

II. Convergent.

III. Transforming.

In coclusion, volcanoes and earthquakes distribution coincides with plate's boundaries.

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Answer:

Nucleotides

Explanation:

Nucleotides are what we refer to as "The building block of DNA" Nucleotides are made of phosphate and a sugar group.

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The correct answer for this question will be option D.

Calcium-41 = 3.12×\(10^8\) atoms

Potassium-41 = 4.69×\(10^9\) atoms

As stated in the question,

Half life of isotope of Ca-14 which decays into K-14 = 1.03 × \(10^5\) years

Therefore, after 1.03 × \(10^5\) years (1 half life)

Ca-41 will be 50%

and, K-41 will be 50%

After 2.06 × \(10^5\) years (2 half lives)

Ca-41 will be 25%

K-41 will be 75%

After 3.09 × \(10^5\) years (3 half lives)

Ca-41 will be 12.5%

K-41 will be 87.5%

After 4.12 × \(10^5\) years (4 half lives)

Ca-41 will be 6.25%

K-41 will be 93.75%

After 4.12 × \(10^5\) years,

Ca-41 = 6.25/100 × 5×\(10^9\)

= 3.12 × \(10^8\) atoms

K-41 = 93.75/100 × 5×\(10^9\)

= 4.69 × \(10^9\) atoms

Therefore, option D is correct.

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Answer: D. The reproductive cells have half as many chromosomes as the body cells.

The correct answer is B. He himself wrote the 20-page paper.

Explanation:

Pronouns such as himself, yourself, themselves, or myself, which are known as intensive pronouns, are used to emphasize the subject of a sentence, usually by placing the pronoun right the subject or main pronoun. This can be seen in the sentence "He himself wrote the 20-page paper" because the pronoun "himself" emphasizes the action "wrote" performed by "he", which is the main subject of the sentence. According to this, it is in the second sentence a pronoun creates emphasis.

Answer:

the answer is d.

Explanation:

i don't think there has ever been a virus named after the place they isolated anyone or anything.

All mutations will result in a change in phenotype, regardless of whether the DNA sequence, amino acid sequence, or mRNA sequence altered.

An organism's hereditary genes determine its phenotype, or physical characteristics and behaviours. Genes are specific DNA sections that encode for the creation of proteins and specify unique features.

New phenotypes are rarely created. Mutations may be inherited and hence transmitted from one person to another. If a mutation produces a novel phenotype that makes an organism more suited to a certain environment, it can swiftly change the attributes of the individuals in a species.

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According to the research, the correct option is frontal lobe. The frontal lobe of the cerebral cortex is MOST directly involved in speaking.

It is the area of the brain that is located in the most anterior part of the head, and it is essential for the human being since it works to plan and coordinate the speaking and social behavior of each individual.

In this sense, working memory, speaking and the articulation of words, movement or self-awareness depend on the frontal lobe, also the prefrontal cortex is located, which is broader and has relationships with many brain structures.

Therefore, we can conclude that according to the research, the correct option is frontal lobe. The frontal lobe of the cerebral cortex is MOST directly involved in speaking.

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Answer:

i believe the answer is "General transcription factor" or "GTF" for short

Explanation:

...

hope this helps :)

Explanation:

Nitrogen is a fairly inert gas at room temperature and is the most abundant element in Earth's atmosphere.

Or

Beans and whey protein

Answer: sunspots spike about every 10 years

Explanation:

took the test and got it right

Answer:

Sunspots spike every ten years

Explanation:

Answer:

A) scanning tunneling microscope (STM)

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The major regulatory center of the autonomic system is, according to many scientists, the hypothalamus since this brain region has functions, such as control of body temperature, that require appropriate activation of sympathetic and parasympathetic nerves.

The brain region of the hypothalamus, which performs a variety of functions, contains a large number of tiny nuclei. Constructing a link between the neurological and endocrine systems is one of the pituitary gland's most significant roles. A component of the limbic system is the hypothalamus, which is situated below the thalamus. It is referred to as the diencephalon's ventral portion in terms of neuroanatomy. The hypothalamus is a part of the brain that is present in all animals. Its dimensions are comparable to those of an almond. The hypothalamus regulates the operations of the autonomic nerve system as well as a number of metabolic processes.

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A cell is placed in a saltwater solution. The water inside the cell will leave the cell, decreasing the size of the cell, meaning that the saltwater solution is hypertonic to the cell (option A).

Osmosis is the net movement of solvent molecules, usually water, from a region of lower solute concentration to a region of higher solute concentration through a partially permeable membrane.

If a cell is placed in a saltwater solution, it means the concentration of the solute outside the cell is more than that of the cell.

As a result, water will leave the cell (higher concentration) to the extracellular salt solution. It can be said that the salt solution is hypertonic.

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Answer:

it looks like a villi to me

Answer:

A is the answer

Explanation:

I'm just guessing

Genetic variation exists in a population. Some of the genetic variation results in different phenotypes. The phenotypes that enhance survival are called adaptations. So, the correct option is A.

Genetic variation among members of the same species is called genetic variation. This variation may be due to variations in gene expression, DNA sequence and epigenetic changes. Mutation, genetic recombination, and genetic drift are causes of genetic variation, which can be altered by environmental variables including exposure to chemicals or climate changes.

Genetic diversity is important because it gives natural selection a starting point to work from, helping organisms to adapt and change over time. There is genetic diversity within a population. Different phenotypes are the result of some genetic variation. Adaptations are traits that improve survival.

Therefore, the correct option is A.

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Your question is incomplete, most probably the complete question is:

Natural selection, adaptations, genetic variation, and population evolution are all related in terms of changes in phenotypes over time. Evaluate which statement appropriately describes the relationship between the concepts of natural selection, adaptations, genetic variation, and population evolution and select the best choice.

1. Genetic variation exists in a population. Some of the genetic variation results in different phenotypes. The phenotypes that enhance survival are called adaptations. Individuals with well-adapted phenotypes are more likely to survive and reproduce, leading to population evolution over generations.

2. Adaptations exist in certain individuals in a population. The increase in adaptations causes an increase in genetic variation. The adaptations that enhance survival lead to larger populations, which further increases genetic variation. Individuals with well-adapted phenotypes are more Likely to survive and reproduce, leading to population evolution over generations.

3. Genetic variation is high in a population, but random events cause it to decrease. Populations with fewer individuals and lower genetic diversity are able to undergo natural selection when selective pressures are high. The increase in selective pressure causes an increase in adaptations that are better suited for survival This results in an evolutionary change of a population.

4. Selective pressures exist in nature and cause changes in a population. Populations with high selective pressures have higher rates of genetic change, leading to an increase in genetic variation, Increased genetic variation leads to some individuals having well-suited adaptations. The presence of these new adaptations is evidence that the population haschanged, or undergone evolution.

The DNA fingerprinting procedure includes:

DNA fingerprinting is considered as a chemical test, which displays the genetic makeup of a person or other living organism. This method was developed by Alec Jeffrey in 1984. This method is used as a paternity and maternity test, criminal identification, and for personal identification.

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