If DNA were to be discovered today, what might have been different?

Answers

Answer 1

Answer:

everything is the same, but more slowly

Explanation:


Related Questions

ok the role of the cell membrane in regulating how nutrients are gained and waste products lost.​

Answers

Answer:

The cell membranes controls what goes in and out by having protein channels that perform their role accordingly sometimes like funnels and like a pump in different cases.

When a channel open in the plasma membrane it allows molecule to pass through, in this case there is no requirement for energy so it is a passive transport.

Gases and food particles broke down in water must be assimilated and waste or harmful substance and molecules must be remove. For most cells, this type of selective transport of all materials all through the cell must happen through the plasma membrane.

how can we use the scientific method to make observations, pose questions, develop hypotheses, design and conduct investigations, and analyze data to draw conclusions?​

Answers

Answer:

Scientific method is scientific process that is used to find the answers about the questions or observation of a natural phenomenon for experimentation. It involves several steps and processes-

Make an observation - observing the phenomenon or problems,

Ask a question - form a question,

Form a hypothesis - making a possible explanation,

Make a experiment based on the hypothesis - design the investigation to test explanation,

Test the prediction

collecting investigation data,

Analyze the data and

Iterate - find the result or conclusion and required to repeat it with other possible explanation.

Which of the following pathways best represents the expected follow of blood from the human heart to an organ?
A. Blood purced from the heart first enters arteries that the narrow to form arterioles that deliver blood to capillaries of the organ .
B. Blood pumped from the heart first enters veins that the narrow to form venules that deliver blood to arteries of the organ.
C. Blood pumped from the heart first enters arterioles that the merge to form artenes that liver blood to the organ.
D. Blood pumped from the heart first enters artenes that the narrow to form veins that deliver blood to the organ.

Answers

Answer:

A.

Explanation:

Human heart is an organ that is responsible for the circulation of blood throughout the body and works in a systematic pathway.

The human heart recieves blood from two large veins, the superior and inferior venae cavae and enters through different chambers in the heart that is first at right atrium to right ventricle, from right ventricle to left atrium, then from  left atrium pumped into the left ventricle.

The blood first enters into arteries and than move to narrorwer to arterioles that deliver blood to capillaries of the organ where the oxygen and nutrients from blood are supplied to body cells for metabolism and the deoxygenated blood enters into veins.

Hence, the correct option is "A".

Multiple Select Question
Select all that apply
Select all of the following that are characteristics of matter.
- Has mass
0 Takes up space
Present only in a solid form
I Always visible to the human eye

Answers

Answer:

The answer is has mass and takes up space.

Explanation:

Matter is any substance that has mass and takes up space. However, matter can be present in forms other than solids (liquids are also made of matter) and matter is not always visible to the human eye (gases are made of matter, but many gases cannot be seen with the human eye).

Hope this helps!


If the cell were a factory, this part of the cell would be the packaging for export center,
What is the answer ?

Answers

Answer:

yes

Explanation:

because fectory so duty

The Golgi Complex

The Golgi Complex basically functions as a "packaging center" for the cell, attaching "address labels" (functional groups) to various cell

You can distinguish a prokaryote apart from a nucleus by--
The presence of a cell membrane
The presence of DNA
presence of a nuclear membrane

Answers

Nucleus at membrane of the presence dna

An accelerated idioventricular rhythm is characterized by all of the following, except:___________.
A) QRS complexes greater than 0.12 seconds in duration.
B) irregular R-R intervals and a rate less than 40 beats/min.
C) wide QRS complexes with P waves buried in the T waves.
D) regular R-R intervals and a rate between 40 and 100 beats/min.

Answers

Answer: B) irregular R-R intervals and a rate less than 40 beats/min.

Explanation:

Accelerated idioventricular rhythm is simply defined as a ventricular rhythm that has a rate which is between 40 to 120 beats in every minute.

It should be noted that idioventricular had to do with things relating to cardiac ventricle.

An accelerated idioventricular rhythm is characterized by:

• QRS complexes greater than 0.12 seconds in duration.

• wide QRS complexes with P waves buried in the T waves.

• regular R-R intervals and a rate between 40 and 100 beats/min.

Therefore, the correct option is B.

Which of the following is the long notation for 3.45 x 10^10? A 3,450,000,000 B 345,000,000,000 C 34,500,000,000

Answers

Answer:

C. 34,500,000,000

Explanation:

Firstly, 3.45 x 10^10 is said to be in a standard form, which is a simpler way to write relatively large or small numbers. Standard forms make use of powers of ten, which means that how many tens can be found in such number.

The power of ten of a small number is written with a negative sign. For example; 0.004 is written as 4 × 10^-3 while the power of ten of a large number is written with a positive sign. For example; 3.45 x 10^10 means the number is large.

In order to convert a standard notation to an expanded notation, one moves the decimal point to the right by the number of times indicated on the index. For example, 3.45 x 10^10 is written as 34,500,000,000 in long notation form by moving the decimal point to the right 10 times (as indicated on the index). A zero (0) is used to fill the blank spaces when moving the decimal point.

Hence, a standard notation of 3.45 x 10^10 can be written as 34,500,000,000 in long or expanded notation. This figure is 34 trillion, 500 million.

How can a mother with the B blood type, having A antibodies in her plasma, carry a baby full-term that inherits the A blood type from his father

Answers

Answer:

The mother can carry a full-term baby with A blood type because the mother's blood does not mix with the baby's blood, so the mother's immune system does not activate attacking the baby.

Explanation:

The reason why a mother with B blood type and A antibodies in her system can carry a full-term pregnancy is thanks to the placenta. The placenta is a shared organ between the mother and the baby. Its function is to protect the baby and produce the necessary exchanges of nutrients and wastes between the maternal blood and the baby's blood. As the two types of blood are separated, and they never get in contact during pregnancy, the immune system of the mother does not recognize the baby as a treat. The mother can have A antibodies in her plasma due to a previous pregnancy where during delivery, the two types of blood mixed, also it can be due to any contact with the A blood type. When the foreign blood enters the body, the immune system forms antibodies for it.

It holds water and other nutrients for the cell. What characteristic of a living thing is this?

Answers

Answer:

cytoplasm consists of up to 90% water and Its main function is to hold together the organelles which make up the cytoplasm.

A 24-year-old G1P1 woman comes to the office requesting contraception. Her past medical history is unremarkable, except for a family history of ovarian cancer. She denies alcohol, smoking and recreational drug use. She is in a monogamous relationship. She wants to decrease her risk of gynecological cancer. Of the following, what is the best method of contraception for this patient?
A. Female condoms
B. Male condoms
C. Copper containing intrauterine device
D. Progesterone containing intrauterine device
E. Combined oral contraceptives

Answers

Answer:

E. combined oral contraceptives

Explanation:

Oral contraceptives will decrease a woman's risk of developing ovarian and endometrial cancer. The earlier, higher dose oral contraceptive pills have been linked to a slight increase in breast cancer, but not the most recent lower dose pills. Women who use oral contraceptive pills have a slightly higher risk of developing cervical intraepithelial neoplasia, but their risk of developing PID, endometriosis, benign breast changes and ectopic pregnancy are reduced. Both hypertension and thromboembolic disorders can be a potential side effect from using oral contraceptive pills. Condoms and intrauterine devices will not lower her risk of ovarian cancer.

A biology student wanted to see if runners from the track team would have a lower respiratory rate than non-runners during exercise. She determined each student's resting respiratory rate. Each student performed the same exercise for a total of 3 minutes, measuring their respiratory rate at the end of each minute. They continued to measure their respiratory rates for 3 more minutes after the exercising had stopped.The table below shows the average respiratory rate of these students over time. Time Runners Non-runners (minutes) (breaths/min) (breaths/min)Resting respiratory rate 0 14 18Exercise phase 1 18 30 2 20 34 3 24 40Post-exercise phase 4 22 39 5 17 36 6 14 32Which of the following is best supported by the data in the table?A) The non-runners returned to resting respiratory rate faster than the runners.B) The respiratory rates of both groups increased by the same amount during exercise.C) The non-runners had a lower respiratory rate than the runners during exercise.D) The respiratory rates of the runners returned to the resting rate 3 minutes post-exercise.

Answers

Answer:

The respiratory rates of the runners returned to the resting rate 3 minutes post-exercise.

Explanation:

In the table we can see how the resting respiratory rate of runners is 14. In the post exercise part their respiratory rate is 22. After 3 boxes the number becomes 14 again. Each of the boxes is 1 minute. Then after 3 minutes, their respiratory rate becomes the same as their resting respiratory rate.

Answer:

The respiratory rates of the runners returned to the resting rate 3 minutes post-exercise.

Explanation:

1.) The runners had an overall lower resting respiratory rate than the non-runners.

2.) Although both experienced an elevation in respiratory rate during exercise, the non-runners' respiratory rates had a larger increase.


3.) In the 3 minutes post-exercise, the runners were able to return to resting respiratory rate, while the non-runners were not.


4.) The correct answer is: The respiratory rates of the runners returned to the resting rate 3 minutes post-exercise.

What cell organelle stores water for plant cells

Answers

Answer:

Hey!

Your answer is The Vacuole!

Explanation:

FUNCTION/DEFINITION : A space within a cell that is empty of cytoplasm, lined with a membrane, and filled with fluid.

This LIQUID is WATER!

HOPE THIS HELPS!!

The cell organelle that stores water for plant cells is the central vacuole.

What is the organelle that stores water?

In plant cells, there is a large, membrane-bound organelle called the central vacuole. It stores a variety of materials, including water, and takes up a sizeable amount of the cell's space. The central vacuole can take up to 90% of the space inside mature plant cells.

The turgor pressure and structural integrity of plant cells are crucially maintained by the central vacuole. It holds molecules such as carbohydrates, ions, pigments, and water. Water builds up in the central vacuole, which contributes to turgor pressure and supports plant tissues by making cells rigid. Furthermore, the turgor pressure preserves the form and structure of the leaves, stems, and other plant organs.

Learn more about organelle:https://brainly.com/question/2135497

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) Describe three benefits of CBT.​

Answers

Answer:

1. CBT can be completed in a relatively short period of time compared with other types of talking therapies.

2. Research has shown CBT can be as effective as medicine in treating many types of depression and other mental health disorders.

3. Skills you learn in CBT are useful, practical and helpful strategies that can be incorporated into everyday life to help you cope better with future stresses and difficulties.

Explanation:

Cognitive behavioural therapy (CBT) is a talking therapy that can help you manage your problems by changing the way you think and behave.

CBT cannot remove your problems, but can help you manage them in a more positive way. It encourages you to examine how your actions can affect how you think and feel.

Talking and changing your behaviour can change how you think (cognitive) and what you do (behaviour). This can make you feel better about life.

CBT can help you manage problems, such as anxiety and depression and make them less likely to have a negative impact on your life.

There is always a risk that bad feelings you associate with your problem will return, but with your CBT skills it should be easier for you to control them.

Answer:CBT can help you manage problems, such as anxiety and depression and make them less likely to have a negative impact on your life. There is always a risk that bad feelings you associate with your problem will return, but with your CBT skills it should be easier for you to control them

In the seven trumpets of judgment a rain of fire burns the vegetation.
a) true
b) false

Answers

Answer:

The correct answer is option a) "true".

Explanation:

According to christianity, the seven seals and seven trumpets of judgment are a series of catastrophic events that will take place at the end of the world. One of the seven trumpets of judgment includes the end of vegetation when a rain of fire burns it. There are theories that explain that the rain of fire refers to a giant firestorm caused by the falling of a series of small meteorites.

a nucleic acid molecules is a type

Answers

Answer:

biopolymer, or large biomolecule, essential to all known forms of life

Explanation:

What characteristic(s) might a human and a cat with extra sex chromosomes (XXY) share? (1 point)

Answers

Answer:

See the answer below

Explanation:

A human and a cat with XXY chromosome share two things in common mainly:

They are both malesThey both suffer from Klinefelter syndrome

In humans and cats, sex is determined by the XY chromosome system. The male sex chromosome is XY while the female sex chromosome is XX. Male individuals with an extra chromosome are XXY and usually suffer from a chromosome disorder known as the Klinefelter syndrome.

The Klinefelter syndrome in humans is characterized by small undescended testes, gynecomastia, and unusually small penis due to the shortage of the testosterone hormone.

Strepsirhines have a special lower incisor called a Group of answer choices tooth comb. diastema. two-ridge tooth. bilophodont.

Answers

Answer: tooth comb

Explanation: Strepsirhines  are any member of the clade (a group of animals or other organisms derived from a common ancestor species) Strepsirrhini, one of the two suborders (a taxonomic category below order and above infraorder) of primates. They have a special lower incisor called a tooth comb which consists of long, flat teeth with microscopic grooves, and used for grooming the fur.

Strepsirhines are a suborder of primates that includes lemurs, lorises, and galagos. They are characterized by a number of features, including a toothcomb, which is a specialized set of teeth in the front, the lower part of the mouth mostly used for combing fur during grooming. Hence option A is correct.

The toothcomb is made up of four lower incisors and two canines, which are fused together to form a single, continuous row of teeth. The teeth are flattened and have sharp, comb-like edges that are used to groom fur.

The toothcomb is a unique feature of strepsirrhines, and it is thought to have evolved to help them groom their fur. Strepsirrhines are nocturnal animals, and they spend a lot of time grooming their fur to keep it clean and free of parasites.

The toothcomb helps them to groom their fur more efficiently, and it also helps to distribute their scent, which helps them to communicate with each other.

To know more about Strepsirhines:

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5._____________________is factual information that results from a scientific investigation. A.bias B.data C.assumption D.none of the above

Answers

d would be the correct answer

The regions of the midbrain that issue subconscious motor commands that affect upper limb position and background muscle tone are the

Answers

Answer: red nuclei

Explanation:

Red nuclei is the region of the midbrain that issue subconscious motor commands that affect upper limb position and background muscle tone.

The red nucleus is pale pink, it's in the midbrain and it is involved in motor coordination. Its pale pink color is due to presence of iron.

When an unstable Co-60 isotope undergoes alpha decay, the nucleus formed is

Answers

Answer:

The correct answer would be : formed nucleus is that of Mn.

Explanation:

Alpha decay is a process that is exhibited by unstable molecules to be more stable. During the alpha decay nucleus of the unstable element removes its two protons and two neutrons in a bundle that researchers call an alpha molecule.

Since a particle loses two protons during alpha decay, it changes starting with one component then onto the next.

Co has 27 protons and neutron in its nucleus emits a alpha molecules that contain 2 protons and 2 neutrons

27=2+z

z =25 in periodic table  25 atomic number of Mn.

Thus, the correct answer would be : formed nucleus is that of Mn.

The focus of _____ was to uncover the elements of the mind, while _____ focused on identifying what thoughts, feelings, and behaviors could be used for.

Answers

Answer:

1. Wilhelm Wundt

2. John Watson

Explanation:

In the history of psychology, there are theoretical and experimental contributions from various researchers who contributed to the development of experimental psychology.

Subsequently, the most important contributions are characterized, ending with Watson's behaviorist proposal and Wundt's information as a method to study psychological phenomena.

Watson's psychological research resulted in the study of behaviorism.

And Wilhelm Maximilian Wundt provided information for the beginnings of psychology as an experimental science and for Wundt, his object of study was mental activity and consciousness, and the method to study it was made up of subjective observation.

An example of a purine is An example of a purine is guanine. deoxyribose. cytosine. ribose 5-phosphate. thymine.

Answers

Answer:

guanine.

Explanation:

Example of scientific question that could NOT be investigated

Answers

Answer:

Example of scientific question that can not be answered would be : "why pink is better color"

Explanation:

A scientific question is the one which can be answered in the scientific experiments to test the question. It is supposed to be testable. A non-scientific question is the one which can't be addressed utilizing trial methodology. It is said to non-testable. However, there are some question that are scientific question but can not be tested

Why pink is better color? As no boundary is given for examination, this inquiry can not be tested or investigated.

Record the remaining colors. a. Blue: b. Red: Do you observe a selective advantage for the red or blue beads? Why?

Answers

Answer:

hello your question is incomplete attached below is the missing parts

answer: when you choose a blue habitat there is disadvantage for the red beads and an advantage for the blue beads while when you choose a red habitat there is a disadvantage for the blue beads and an advantage for the red beads

Explanation:

There is a selective advantage for the red and blue beads and the selective advantages are :

when you choose a blue habitat there is disadvantage for the red beads and an advantage for the blue beads while when you choose a red habitat there is a disadvantage for the blue beads and an advantage for the red beads. what this simply means is that the change in the habitat cause a proportional change in the phenotype

Which of the following is NOT a mechanism used to temporally regulate the activity of maturation-promoting factor (MPF)?
A. the presence of mitotic cyclin
B. specific dephosphorylation
C. glycosylation
D. specific phosphorylation

Answers

Answer:

C. glycosylation

Explanation:

The maturation-promoting factor (MPF) is a cell cycle checkpoint that stimulates the passage from G2 (prophase) to M phase (metaphase). MPF also determines that DNA replication during the S (synthesis) phase did not produce any mutations. MPF is inactivated by kinase phosphorylation and activated by specific phosphatases capable of dephosphorylating this protein. On the other hand, glycosylation is a posttranslational modification where a carbohydrate (i.e., a glycan) is added to a functional group of another molecule. Many proteins undergo glycosylation, thereby playing a critical role in regulating protein function.  

A student conducts an experiment to determine how the amount of water given to a plant affects its growth. Which of the following is not a constant or control for this experiment?

Answers

Answer:

but i think its the amount of water

Explanation:

sorry if im wrong

Women have a tendency to retain water during part of the menstrual cycle because estrogen mimics the action of what

Answers

Answer:

This question lacks options, options are:

A) ADH

B) aldosterone

C) atrial natriuretic hormone

D) oxytocin

E) prolactin

The correct answer is B.

Women have a tendency to retain water during part of the menstrual cycle because estrogen mimics the action of aldosterone.

Explanation:

The female sex hormones produced by the ovary (estrogens and progesterone) are substances that, through the blood, will carry messages to all the organs of the female genital system (uterus, tubes and ovaries) to achieve their correct function. Aldosterone concentration normally increases at the time of ovulation and remains elevated during the luteal phase of the menstrual cycle. Women present during the premenstrual phase, compared to the luteal and follicular phases, an increase in body weight, due to an increase in fluid retention, this because the menstrual cycle modulates the renin-angiotensin-aldosterone system. High levels of estrogen and progesterone in the mid-luteal phase are associated with a greater increase in adrenal and renal hormones and retention of more volume.

Which reaction steps are irreversible and require a different enzyme in gluconeogenesis than in glycolysis

Answers

Answer:

The following two steps:  

pyruvate kinasehexokinase

Explanation:

Many of the enzymes play a common role between the processes of gluconeogenesis and glycolysis. The reactions that are irreversible in the case of glycolysis get bypassed by different routes undertaken in gluconeogenisis.

Which best describes the role of nitrogen in the human body?
O A. Main ingredient of protein
B. Transfers energy in cells
C. Makes energy in cells
O D. Makes up 1.5% of the human body

Answers

Answer:

O A. Main ingredient of protein

Explanation:

Nitrogen is used by our body to make amino acids  which in turn make proteins.

O A. Main ingredient of protein
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