Temperature-sensitive alleles are an example of conditional alleles; at the permissive temperature, the gene has normal function, whereas at the restrictive temperature, the gene has mutant function. You are studying the E2F pathway and you obtain a temperature-sensitive CDK4 mutant. At the permissive temperature, CDK4 functions normally. At the restrictive temperature, CDK4 is non-functional. Would you expect cells to continue growing or stop dividing when at the restrictive temperature? Explain your answer.

Answer: mitochondria

Explanation:Animals and plants are made up of many complex cells called eukaryotic cells. Inside these cells are structures that perform special functions for the cell called organelles. The organelle that is responsible for producing energy for the cell is the mitochondria And cellular respiration.

Contraction and relaxation of the muscle fibers of the Iris cause changes to the size of the pupil.

What is eye?

Parts of eye:

Hence, iris causes changes in the size of pupil

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Answer:

crust

Explanation:

Answer:

which liquid takes the longest to burn

Explanation:

the other options are talking about personal preference sort of things. this is the only one that has only one answer and is scientific

Photo emissive detection converts light energy into electrical signals using a photo cathode that emits electrons when photons strike it, allowing for light intensity measurement.

Light detection using photo emissive detection involves the conversion of light energy into electrical signals through a photo emissive material. This technique is based on the phenomenon of the photoelectric effect, where photons of light can cause the emission of electrons from a material's surface.

Photo emissive detectors typically consist of a photo cathode made of a material with low work function, such as cesium or potassium compounds. When photons of sufficient energy strike the photo cathode, they transfer their energy to the electrons within the material, causing some electrons to be emitted from the surface.

The emitted electrons are then accelerated towards an anode electrode by an electric field, creating a current flow. This current is directly proportional to the intensity of the incident light, allowing for the measurement of light levels.

To improve the efficiency of the photo emissive detection, a voltage bias can be applied between the photo cathode and the anode. This accelerates the emitted electrons and increases the overall sensitivity of the detector.

Photo emissive detection is commonly used in applications such as photomultiplier tubes (PMTs) and image intensifiers. PMTs are used to detect low levels of light and are widely employed in scientific research, medical imaging, and night vision devices. Image intensifiers amplify incoming light to produce brighter images in night vision goggles and other imaging systems.

In summary, photo emissive detection is a light detection technique that relies on the photoelectric effect to convert light energy into electrical signals. It utilizes a photo cathode, which emits electrons when exposed to photons, and an anode to collect these emitted electrons, resulting in a measurable current.

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Answer:

B. location

Explanation:

Smoking, X-rays, gamma rays, tobacco, certain chemicals like bromine, and sunbathing exposure to UVB radiation are significant variables that might promote mutations.

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Answer:

Combination 2

Explanation:

The statement which is not true for DNA in prokaryotes is that it is packaged as nucleosomes along with histones amd is therefore denoted as option D.

This is referred to as deoxyribonucleic acid and it is the genetic material of most organisms.

DNA is supercoiled in prokaryotic cells which meaning that the DNA is either under-wound or over-wound from its normal relaxed state. However, in the case of eukaryotic cells, the DNA is wrapped around proteins known as histones to form structures called nucleosomes which is therefore the reason why option D was chosen as the correct choice.

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Answer:

1 and 2

Explanation:

Enzymes play a crucial role in the process of absorption by breaking down large molecules of food into smaller, more easily absorbable molecules.

In the digestive system, enzymes are produced by specialized cells and secreted into various parts of the digestive tract. For example, enzymes such as amylase and lipase are secreted into the mouth and small intestine, respectively, to break down carbohydrates and fats.

Once the food molecules are broken down into their smaller components, they can be more easily absorbed through the walls of the digestive tract and into the bloodstream. Enzymes also help to facilitate the movement of these molecules across the cell membrane and into the cells of the body, where they can be used for energy or stored for later use.

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Answer:

Body systems. Our bodies consist of a number of biological systems that carry out specific functions necessary for everyday living. The job of the circulatory system is to move blood, nutrients, oxygen, carbon dioxide, and hormones, around the body. It consists of the heart, blood, blood vessels,arteries and veins.

Answer:

2 sister chromatids

Explanation:

Answer:

2 sister chromatids

Explanation:

Each chromosome composed of 2 sister chromatids . The daughter cells now close in to the 3rd and last phase of meiosis : meiosis II .

The letter written to show that "Honesty is the best policy." is shown below.

Dear Chero,

I wanted to take a moment to say how much I respect your unwavering dedication to being truthful. These days, integrity is a rare quality, thus I consider myself fortunate to have you in my life as a role model.

You have clearly followed your motto, "Honesty is the best policy," to the letter. Even when it's challenging, you always tell the truth, and you're never afraid to own up to your mistakes. In those circumstances, your bravery and humility are admirable.

The advantages of your honesty are clear to perceive. People know they can rely on you to always act morally because you have gained their respect and trust. In every area of your life, your integrity is a true value.

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The answer is C. P wave occurs after the QRS complex but before the T wave.

Answer:

The correct answer is option D. negative correlation.

Explanation:

Negative correlation is a correlation in where the relation between two variables is in such way that if one increases the other variable will decrease and if other variable will increase the first variable will decrease similarly.

In this case the first variable that is hours in driver education class shows increase than the chances of accidents decreases by that students which suggests there is a negative correlation.

Thus, the correct answer is option D. negative correlation.

A description of the compost bin that can be used for this experiment is that the bin is a rectangle-shaped container that is made of wood. This container is 150 cm wide and 30 cm deep. It can hold up decaying materials for up to one month.

The compost can be used to store decaying materials that will be used in a nearby farm for manure. Composting is the act of storing up decomposable materials that remain in a container until they are ready for use.

The compost so obtained can be used to improve the fertility of the soil where crops will be planted.

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Answer:

-Drone bees fertilize the queen.

-Their stinger is a modified egg container, so its not actually a stinger!

-Drone bees have half the chromosomes of a female, therefore they have 16.

Answer:

Hepatitis A

Explanation:

Hepatitis A refers to a liver disease or infection that results in mild to severe illness in humans and it is typically caused by the Hepatitis A Virus (HAV).

Generally, the main cause of Hepatitis A is as a result of the ingestion of food or consumption of water that has been contaminated by the Hepatitis A Virus (HAV) or getting in direct contact with fluids from an infected person.

Some of the symptoms of Hepatitis A are loss of appetite, feverish conditions, itching, nausea, fatigue, diarrhea, dark-colored urine, malaise, abdominal pains, yellowing of white portions of the eyes and skin (jaundice).

Hence, if a food handler reports to work with obvious yellowing of the eyes and skin. The sickness or illness that the food handler should be checked for as an adult is Hepatitis A.

Hepatitis A is a viral infection, which affects the liver. The person with obvious yellowing of eye and skin should be checked for Hepatitis A.

Hepatitis A is a viral infection caused by the Hepatovirus A. The virus affects the liver, which may lead to mild to severe illness in the patient. The disease is caused by the consumption of contaminated food and water, personal contact with the infected person, and using used drugs with other persons.

Some of the symptoms of Hepatitis A are:

Therefore, the person should be checked for Hepatitis A as he exhibits the symptoms of the disease.

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Both males and females can experience reproductive system disorders. These disorders can be caused by genetic factors, hormonal imbalances, structural issues, infections, or other medical conditions. In males, these disorders may include erectile dysfunction, infertility, testicular disorders, prostate problems, and hormonal imbalances. In females, they may include menstrual disorders, polycystic ovary syndrome, endometriosis, uterine fibroids, ovarian cysts, infertility, and hormonal imbalances. Treatment options vary depending on the specific disorder and may involve medication, hormonal therapy, surgery, or assisted reproductive technologies.

Answer:

B

Explanation:

Answer:

C. 55 is the answer.

Answer:

I would think the tree

Explanation:

The size of the proboscis helps the moth to consume the food (nectar) easily from Darwin's orchid.

Adaptation may be defined as the process of modifying one's characteristics to better suit a situation and survive more efficiently.

The size of the tube that produces nectar is just 27.9cm long, while the length of the proboscis of a moth is 30.5cm. It easily consumes the nectar and gets energy for survival as well as reproduction.

Therefore, the size of the proboscis helps the moth to consume the food (nectar) easily from Darwin's orchid.

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radiometric dating is the type of dating that both spouses are into each other genuinely while relative dating is the vice versa

Answer:

There is a high probability that the Pea plant will have a High phenotype!

Explanation:

Because both "parent plants" are tall, this will cause the offspring to also be tall, this will be because it in it's genes or in other words DNA too be strong.

Answer:

B

Explanation:

A solar system is just a few planets which are smaller than nebulae or galaxies.

Nebulae is pretty much a cloud of dust and gas but it's still smaller than a galaxy

And then the universe kind of includes everything so there's nothing bigger than that

Answer:

calf

Explanation:

the tibialis anterior muscle extends to allow the toe to point down, therefore the calf contracts

1. I think it is C

2. Possibly A, as shale is a sedimentary mineral

3. C possibly

4. C, obsibian, very glossy and fine, i have some at home, so i know the charactisitics

5. C