In the 1940s, proteins were thought to be the more likely molecules to house genetic information. what was the primary reason that dna was not originally believed to be the genetic material

Answers

Answer 1
DNA was found to contain only four different chemical building blocks. 

Related Questions

He ___________ nervous system transmits information from receptors to the cns, while the ___________ nervous system transmits information from the cns to the rest of the body.

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Hello There!

The sensory nervous system transmits information from receptors to the CNS, while the motor nervous system transmits information from the CNS to the rest of the body.

Hope This Helps You!
Good Luck :) 

- Hannah ❤

which would you pick

Play dough

or

Kinetic sand?

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Kinetic sand because kinetic sand can't get hard if you leave it out

What nursing diagnosis would be most appropriate for a client admitted with heart failure?

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The most appropriate nursing diagnosis for a client/patient that has heart failure would be "ineffective tissue  perfusion." A patient that is suffering from heart failure will experience pain, being fatigued more than regular, and activity intolerance. The patient may also begin to have low blood pressure, confusion, and slow capillary refill. To be diagnosed there are several tests that must be taken by a licensed professional. 

Pcr is used to amplify a segment of dna and the enzyme responsible for the replication of dna is

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practis coloring right

List and describe the four common passageways for non water molecules entering or exiting the cell

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The list of  four (4) common passageways for non-water molecules for entering and exiting the cells are the following; 

Endocytosis
Exocytosis
Facillitated Diffusion
Active Transport

Endocytosis is a form of active transport  in which a substance gains entry into a cell without passing through the cell membrane. Exocytosis is a form of active transport by which a cell transports secretory products through the cytoplasm to the plasma membrane. Facilitated Diffusion also called as facilitated transport is a form of transport of spontaneous passive transport (as opposed to active transport) of molecules or ions across a biological membrane via specific transmembrane integral proteins.Active Transport is a mechanisms that require the use of the cell's energy, usually in the form of adenosine triphosphate (ATP)

Final answer:

The cell membrane utilizes four main passageways for non-water molecules: passive osmosis and diffusion for gases and small molecules; transmembrane protein channels and transporters for small organic molecules; endocytosis for large molecules or cells; and exocytosis for removing or secreting substances.

Explanation:

The cell membrane controls the movement of substances into and out of the cell, utilizing different passageways for non-water molecules. These include:

Passive osmosis and diffusion: These processes allow for the transport of gases (such as O₂ and CO2) and other small molecules and ions without the requirement of energy input from the cell.

Transmembrane protein channels and transporters: Specific proteins facilitate the movement of small organic molecules, such as sugars or amino acids, across the cell membrane.

Endocytosis: This pathway enables the transportation of large molecules or even whole cells into the cell by engulfing them through the cell membrane.

Exocytosis: Conversely, exocytosis involves the removal or secretion of substances, such as hormones or enzymes, from the cell.

The cell membrane's selective permeability ensures that only specific substances can pass through, maintaining the cell's internal environment.

Which of these body parts is dorsal to your eyes?

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Your back is dorsal (or behind) your back

Two brown eyed parents have produced three blue eyed sons if they have another child what are the chances that it will also have blue eyes
A) blue eyes are dominant in this family so there is a 75 percent chance the next will be blue eyed
B) after having three blue eyed children there is a 0 percent chance of having another
C) both parents carry a recessive allele for blue eyes so there is a 25 percent chance of having another
D) since all their children are blue eyed there is a 100 % chance the next will too

Answers

Since blue eyes are dominant, the answer that would make the most sense is A. Hope this helped! :)
I did the test and answer was C. Both parents carry a recessive allele for blue eyes, so there is a 25 percent chance of having another.

While conducting a physical examination of the cardiovascular system, the nurse hears fine crackles on auscultation of the lungs. this finding is most likely a manifestation of which problem?

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The answer to this question would be: congestive heart failure
The crackles from lung auscultation are caused if there are fluid inside the alveoli of the lungs. There are a few reasons why fluid can enter the alveoli space. Infection can cause increased permeability of the lungs capillary vessel so the fluid might go outside. But the crackle sound will be coarse, not fine crackles.
The reason that was correlated with the cardiovascular system is congestive heart failure. Congestive heart failure will cause the fluid to be stuck up, make the hydrostatic pressure increased. Increased hydrostatic will cause the fluid to move from the capillary vessels into alveoli space.

A certain type of diploid organism has 38 chromosomes. how many chromosomes would a gamete of this organism have?

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a gamete will have exactly half the number of chromosome ,that is haploid,therefore ,19

Evidence for the theory that an atom is mostly empty space was supported by research of which of these scientists

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energy change occurring in the atom?

Part d true or false? biologists studied the effects of forest fragmentation by calculating the difference between the amount of plant biomass in the edges of forest fragments and the interiors of unfragmented forest.

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I think the answer is true

Why are radioisotopes important to biologists?

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because they can helps biologists date fossils and past life OR tracers to follow atoms through metabolism.

How do factors, such as trade, war, migration, and inventions, affect cultural change

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I think these factors affect cultural change because it affects the way people live their lives.  In the past, trade is one of the ways how people learn to barter and introduce their culture to other nations. Through trade, people were able to experience the food and products of the people from the other side of the world. While war affects culture in a way where people believe that their culture is superior compared to other culture. 


Organic matter in soil is also called _____.


loam

talus

humus

regolith

Answers

Answer:

The correct answer would be humus.

Humus is the organic material of the soil formed by the decomposition of the dead plants and animals. It is thick and dark in color (brown or black) and can also be produced by the process of composting.

It is very for the soil as it adds moisture to the soil, enhances the structure of the soil which increases the aeration and drainage.

It favors the growth of organisms (such as earthworm) helpful for the growth of plants and adds lots of nutrients to the soil, specially nitrogen.

In contrast, loam is a type of soil which is composed of silt, sand, and clay in 40-40-20 ratio. Regolith referred to the superficial layer covering the solid rocks or bedrock. It is formed by the accumulation of soil, dust, broken rocks etc on the bedrock.

Lastly, talus referred to the slope which is formed by deposition of shattered rock debris at the base of a cliff.

The highly conserved sequence element present within homeotic genes is called the __________.

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The highly conserved sequence element present within homeotic genes is called the homeobox.

A(n) _____ is anything that causes an increase in the frequency of a behavior.

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behavior-altering effect- either (a) an increase in the current frequency of behavior that has been reinforced by some stimulus, object, or event, called an evocative effect; or (b) a decrease in the current frequency of behavior that has been reinforced by some stimulus, object, or event, called an abative effect.

i believe the behavior altering effect

It is so important in our everyday lives to be able to evaluate if a claim is truly scientifically reliable or not. Often, advertisements will claim to have “proven results”. Can you evaluate if this is a reliable claim or not?

Give an example of 3 questions you can ask yourself to determine if a claim is scientifically reliable or not:

1
2
3

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What is their source? 
- they could be a part of a marketing scam 
- the key question is: how do they know? 
-  Who produced it and what background do they have?
- what other studies could the group have produced?

Is the main point of the claim proven by evidence? 
- In order to figure out if something is reliable or not, you have to ask whether it makes sense and whether the conclusions were proven
- do the conclusions follow logically from what has been cited, or are they being drawn from evidence that doesn't support them at all? 

Do the sources have a bias? 
- That doesn’t necessarily mean what they have to say isn’t reliable
- But think about whether they are a witness to facts or are just describing their opinion

The neurons that carry messages from the central nervous system to the muscles of the body are the

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That would be ur motor neurons

The sensory neurons carry messages to the central nervous system. The motor neurons are the ones that transmit messages from the central nervous system to the muscles

The sun is the ultimate source of energy for terrestrial ecosystems. approximately how much of the potential energy available from the sun s rays hitting the earth is used in photosynthesis? 50% 25% 10% 1%

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its 50% thinvs that eat the plants get 25% and so forth

Cells are largely made of organic compounds that contain carbon. Which property of the carbon atom makes it an essential component of organic compounds?

Carbon is solid at room temperature.

Carbon can form four covalent bonds.

Carbon is a nonmetal.

Carbon oxidizes to carbon dioxide.

Answers

carbon is a non metal

Answer:

I think it might be B

Explanation:

If you search if Carbon can from four covalent bonds it can. And it wont matter if its a non metal and if its solid at room temperature so I think its B. Please correct me if im wrong.

A client has been prescribed timolol eye drops. what are three (3) possible adverse effects of this medication and nursing interventions/client education related to these effects?

Answers

The three (3) possible adverse effects of this medication and nursing interventions/client are the following;
First is Prevention of nocturnal enuresisSecond is Maintenance of appropriate body water content in diabetes insipidus And the last is Control of bleeding in certain types of hemophilia or von Willebrand's disease(Davis's Drug Guide for Nurses 14th Edition)

The use of timolol eye drops involves side effects such as irregular heartbeat, vision changes, and trouble while breathing. During such visible effects, a person must not drive and inform the doctor beforehand about their medical history related to lung or heart diseases.

Further Explanation:

When high pressure is build up inside the eye as a result of glaucoma or ocular hypertension, it is being treated by a medication called timolol eye drop. It lowers the pressure and helps in the prevention of blindness. This eye drops work by reducing the fluid content of the eye, thus stabilizing the pressure. Timolol comes under the class of beta-blocker drugs.

Before using the eye drop, one must read the information leaflet carefully. The hands must be washed before applying the eye drop, and one must not touch the tip of the dropper to avoid contamination. The people who use contact lenses must remove them to apply the eye drop and wait about 15 minutes before wearing the contact lenses again.

There are certain common and adverse side effects linked to the use of this medication. The common side effects are:

Blurred vision Itching or redness in the eye Watery or dry eyes Headache

The adverse effects include:

Irregular or slow heartbeat Vision changes Troubled breathing Chest pain Dizziness and fainting

When the doctor prescribes the timolol, the patient must inform the doctor regarding any of the medical histories he or she might have. This is because the prescribed medication contains some inactive ingredients which might be allergic to the patient. A person with medical conditions such as lung disease, heart disease, sinus bradycardia (a type of irregular heartbeat) must inform the doctor as the serious side effects of this medication might elevate the symptoms of these diseases.

Learn More:

Learn more about meiosis https://brainly.com/question/1600165 Learn more about the process of molecular diffusion in a cell https://brainly.com/question/1600165 Learn more about human sperm and egg cell https://brainly.com/question/1626319

Answer Details:

Grade: High School

Chapter: Medicine

Subject: Biology

Keywords:

Timolol, irregular heartbeat, trouble breathing, blurred vision, vision changes, lung disease, heart disease, sinus bradycardia, dizziness, itchy eyes, headache.

Which of these is an important part of the scientific process?

Answers

Observation is an important part of the scientific process. :))

Answer:

A. Observation

Explanation:

The scientific process starts with observation as a tool to acquire information.

The objectives are to get new knowledge based on observing, experiment, and creation of new theories.

Science is objective, and don't care about religion, nationality, and phrenology.

An enzyme known as amylase is found in the saliva of humans. This enzyme helps to begin the process of digesting starch molecules in the foods we eat. Which of these BEST describes how enzymes like amylase help in the process of digestion?

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An enzyme known as amylase is found ins the saliva of humans. This enzyme helps to begin the process of digesting starch molecules in the foods we eat. The best description of how enzymes like amylase help in the process of digestion would be that Amylase is a catalyst that speeds up the chemical process of breaking down food molecules.

What is an abnormal heart rhythm that makes the heart unable to pump blood effectively?

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Arrhythmia is probably the term you're looking for.

The prefix "a-" means "not" and the suffix/root "-rhythmia" means "rhythmic."
We usually refer to these terms as either arrhythmia or dysrhythmias. Under most normal circumstance however, Dysrhythmias are the term I hear most thrown around, but both are the same. Two very dangerous and common dysrhythmia's which are responsible for what we call "Cardiac Arrest" include V. Fib (Ventricular Fibrillation) and PVT/VT (Pulseless Ventricular Tachycardia/Ventricular Tachycardia).

If photosynthesis captures only 1-2% of the energy from sunlight, what happens to the other 98-99% of energy

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It is used to produce carbohydrate molecules (Carbohydrates are molecular compounds made from just three elements: carbon, hydrogen and oxygen. Monosaccharides are relatively small molecules.). The energy from the light is shuttled from the light reaction to the dark reaction (Calvin Cycle). The energy goes into generating the intermediary ATP and another chemical called NADPH.

The injection temperature causes vaporization. true or false: 400 °c is a good injection temperature for a sample that decomposes at 350 °c.
a. True
b. False

Answers

The statement above is FALSE.
The injection temperature refers to the temperature at which a substance is injected into a medium during a chemical process. Injection of substances are usually done at temperature range which is below the vaporization temperature of the substance been injected. This is necessary in order to guard against the loss of the substance as vapors

The most abundant element in the atmosphere can also be found in ?

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The most abundant element in the atmosphere can also be is nitrogen since nitrogen gas accounts for about 78% of the atmospheric gases. Beans and whey protein are, of course, high in protein, and a fundamental component of proteins at the molecular level is a nitrogen-containing group called an amine group.

The most abundant element in the atmosphere can also be found in


Of all the forms of electromagnetic radiation, the one with the lowest frequency is: question 9 options:

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Radio waves are the lowest frequency.

How do activities in the large intestine maintain homeostasis?

Answers

Activities in the large intestine that is absorption of water from feaces maintain the water level in the body

"what percentage of primary energy is used for transportation in developing countries"

Answers

I think it is concrete.
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