A structure consisting of proteins and looped dna in a repeated pattern is known as a:_________

Answers

Answer 1

A structure of protein and looped DNA in a repeated pattern is known as nucleosomes.

What are nucleosomes?

Nucleosomes are a structure of DNA looped around histone proteins. This connection is histone and proteins makes sure of the compact nature of DNA in all eukaryotic cells.

Histone proteins are basic positively charged proteins. These histone proteins prevent DNA damage and also aid in DNA replication.

Eight positively charged histone protein molecules at the centre of the looped DNA are called histone octamers. Two copies of the four core histone proteins i.e H2A, H2B, H3 and H4 are present in a histone octamer. Negatively charged DNA readily surrounds the positively charged histone proteins to form the nucleosome.

Therefore, the structure of proteins and looped DNA in a repeated pattern is known as nucleosomes.

Related Questions

the major difference between the clades eumetazoa and parazoa is the presence of true tissues. group of answer choices

Answers

Animals classified as Eumetazoa have tissue that develops into genuine tissues and organs. This tissue arrangement is absent in parazoa. This shows that Eumetazoa have tissue that is more intricately structured than parazoa. The phylum Porifera, or sponges, has some examples of parazoa.

A collection of cells that work together to produce a tissue. Eumetazoans have genuine tissues, whereas parazoans do not.

With the exception of sponges, placozoa, and a few other minor or extinct life forms, including Dickins onia, all major animal groups belong to the clade known as Eumetazoa. Eumetazoans have an embryo that goes through the gastrula stage and genuine tissues that are arranged into germ layers.

a suborder of invertebrate organisms that coexists with Porifera and includes multicellular forms that are roughly equivalent to gastrulae in the organization — see metazoa and protozoa.

All creatures belonging to the metazoa order are made up of cells that develop into tissues, organs, and organ systems. They also have a digestive system. All multicellular creatures are present in it.

It is further divided into two categories:

All of the species from the phyla Porifera and placoza are found in the class Parazoa.

From cnidaria through chordates, all creatures that are composed of cells, tissues, and organ systems belong to the phylum Eumetazoa.

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A student constructs a Venn diagram to compare the organelles in plant and animal cells.

Venn Diagram of Plant and Animal Cells

A Venn Diagram is shown. One circle is labeled Animal only, the other circle is labeled plant only, and the overlapping section is labeled both.

Which organelle should be listed under “Animal Only” in the diagram?
A. nucleus
B. centriole
C. ribosome
D. cell wall

Answers

The Answer to "

A student constructs a Venn diagram to compare the organelles in plant and animal cells. Venn Diagram of Plant and Animal Cells A Venn Diagram is shown. One circle is labeled Animal only, the other circle is labeled plant only, and the overlapping section is labeled both. Which organelle should be listed under “Animal Only” in the diagram? nucleus centriole ribosome cell wall"

Is B. Centriole

Answer: centriole

Explanation: A

Below are some events that take place during cell division? Which would be the correct order?

I. Chromosomes line up at the equatorial plane
II. Chromosomes condense, becoming shorter and thicker
III. Chromosomes have long and nuclear membrane forms around them
IV. Centromeres divide and the chromosomes move to the opposite poles

a. 2-1-4-3
b. 3-4-1-2
c. 1-3-2-4
d. 4-1-2-3

Answers

The correct order of events during cell division is: 3-4-1-2, the correct option is b.

During cell division, several key events occur in a specific order.

Chromosomes have long and nuclear membrane forms around them: Before cell division occurs, the chromosomes within the nucleus start to undergo changes. Centromeres divide and the chromosomes move to the opposite poles: At this stage, the centromeres, which hold the sister chromatids together, divide. Chromosomes line up at the equatorial plane: Once the chromosomes have reached the opposite poles of the cell, they align themselves along the equatorial plane or the metaphase plate. Chromosomes condense, becoming shorter and thicker: In this step, the chromosomes further condense, becoming even shorter and thicker.

Thus, the correct order, b. 3-4-1-2, accurately represents the sequence of events during cell division.

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Tissues are made up of ________ that work together to perform a function. similar cells different cells organs organ systems

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Tissues are made up of similar cells that work together to perform a function. Option A is the correct answer.

The biological level of organization between cells and a whole organ is called a tissue in biology. Therefore, a tissue is frequently considered to be an amalgamation of comparable cells and their extracellular matrix from the same origin that work together to perform a certain function. Option A is the correct answer.

The functional grouping of several tissues together results in the formation of organs. The body's tissues give it form and aid in energy storage as well as heat. Connective tissue, epithelial tissue, muscle tissue, and nervous tissue are the four different types of tissues. Tissues aid in keeping the body aligned and in good posture. The main functions of nerve tissue are to receive inputs and send information to the brain and spinal cord.

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The complete question is, "Tissues are made up of ________ that work together to perform a function.

A. similar cells

B. different cells

C. organs

D. organ systems"

Adequate vegetation in certain areas can___.

Answers

A is the answer roots hold soil in place think of the dust bowl in history caused by over farming that’s the same concept

There are 16 chromosomes in the egg of a certain species of frog. How many chromosomes are in the skin cell?

Answers

Answer:

Explanation:

Answer:

Explanation:

there was no need to hire maintenance personnel the organization has an hierarchy but maintenance functions performed at every level

Answers

It is implied that there is a hierarchy responsibility for maintaining the facilities and equipment by having maintenance tasks completed at every level of the organisational structure as opposed to depending solely on a dedicated maintenance staff.

What role does maintenance play inside an organisation?

Maintenance is an essential part of quality control and, in some cases, has an impact on a business's long-term success. Unstable resources can stop production if they have not been maintained appropriately.

What benefit does the deployment of maintenance provide?

due to the fact that it not only improves asset performance but also prevents asset failure. Maintenance costs rise when an asset receives maintenance after it fails.

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Question:

What is the implication of having maintenance functions performed at every level in the organization's hierarchy, as opposed to having a dedicated maintenance personnel?

Which of the following statements is true? *
a. Energy can be recycled through an ecosystem repeatedly, while nutrients cannot
b. Energy only flows in one direct through an ecosystem, while nutrients can be recycled repeatedly
c. Both energy and nutrients can be repeatedly recycled through an ecosystem
d. Neither energy nor nutrients can be reused in an ecosystem.

Answers

Answer:

i believe its c

Explanation:

sort the following layers of the integumentary system so that the most superficial is on top and the deepest is on the bottom.
1. living epithelial cells
2. dead epithelial cells
3. subcutaneous layer
4. papillary layer
5. reticular layer

Answers

The following layers of the integumentary system so that the most superficial is on top and the deepest is on the bottom . papillary layer.

integumentary system is your body's outer layer. it is made from your skin, nails, hair and the glands and nerves on your pores and skin. Your integumentary gadget acts as a bodily barrier — shielding your frame from bacteria, contamination, harm and sunlight

Accessory structures of the skin consist of hair, nails, sweat glands, and sebaceous glands. those systems embryologically originate from the epidermis and may amplify down through the dermis into the hypodermis.

Your integumentary gadget protects your frame from contamination and accidents you could get out of your external environment. it's your body's coat of armor and the primary line of protection towards viruses, micro organism and other microbes. It shields your body from dangerous mild and helps adjust your body temperature.

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Which of these would be true concerning mitochondria and nerve cells?
es )
A)
free-floating mitochondria in the blood plasma creates the energy needed
for the neurons
B)
mitochondria are not found in nerve cells as nerves use a different type of
energy than ATP to function
C)
all of the ATP for nerve cells is transported to from the mitochondria in
other cells directly to the nerve cells
due to the high energy demand of neurons, the mitochondria help produce
large amounts of ATP are needed for neurotransmission
D)

Answers

Answer: D just took the test

Explanation:

Answer:

Explanation:

Got it right

Organisms that are closely related, but not direct members of the group being studied.

Answers

Paraphyletic. I believe

What is the shape of Glial cells? A.Pinched at the waist B.Random C.Oval D.Branched

Answers

The glial cells are part of the nervous system and have a fibrous appearence, examples of that type of cells are: astrocytes, microglial cells, and oligodendrocytes. Therefore, the shape of glial cells is random (b), since it have a lot of different shapes.

True or false In a single celled organism, mitosis is used for reproduction.

Answers

Answer:

the answer is true.

Nutrition involves those activities by which organisms

Answers

Answer:

-Obtain and process materials needed for other activities.

Positive words to describe biology

Answers

Fascinating, intricate, diverse, essential, interconnected, dynamic, adaptive, innovative, life-sustaining, transformative, remarkable, intricate, beautiful, complex, awe-inspiring, enlightening, integral, evolving, intricate, interconnected, resilient, intricate, and essential.

Fascinating: Biology is a fascinating field that explores the intricacies of life and living organisms.

Complex: Biology deals with complex systems, processes, and interactions found in nature, making it intellectually stimulating.

Adaptive: Biology showcases the incredible adaptability of organisms, highlighting their ability to respond and evolve in changing environments.

Vital: Biology is vital in understanding the fundamental processes that sustain life and the interconnectedness of living organisms.

Diverse: Biology encompasses a vast array of species, ecosystems, and biological phenomena, showcasing the immense diversity found in the natural world.

Dynamic: Biology is dynamic, with constant discoveries and advancements that shape our understanding of life and its mechanisms.

Intricate: Biology reveals the intricate details of cellular structures, molecular interactions, and physiological processes, illustrating the complexity of life.

Inspiring: Biology has the potential to inspire awe and wonder, as it uncovers the beauty and intricacy of the natural world.

Empowering: Biology empowers us with knowledge and tools to improve human health, address environmental challenges, and promote sustainable practices.

Interdisciplinary: Biology intersects with various fields such as genetics, ecology, physiology, and biochemistry, fostering collaboration and interdisciplinary approaches to solving scientific problems.

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If the frequency of p2 equals 0.49, what is the value of q?

Responses

0.009
0.009

0.3

0.3,

0.7
0.7

1

Answers

Answer: q = 0.3

Explanation: According to hardy weinberg principal

p + q =1

p^2=0.49

hence, p=0.7

therefore q= 1-0.7

q=0.3

What caused an increase in the coronavirus's genetic variation?

Answers

Answer:

The structure in coronavirus has no rewriting ability which leads to many errors during replication and high genetic variation. i think :)

Explanation:

2.
What type of correlations would you predict under
the trophic cascade hypothesis?

Answers

Answer:

the correlation would be negative because a change in the upper trophic level causes the opposite effect in the lower level.

what organelle makes phospholipids how does a phospholipid differ from a fat molecule

Answers

The organelle that makes phospholipids and how a phospholipid differs from a fat molecule is the Endoplasmic Reticulum (ER).

Phospholipids are synthesized by enzymes attached to the cytosolic surface of the ER membrane. Additionally, these lipids are the main components of cell membranes and play a crucial role in their formation. They contain a hydrophilic (water-loving) head and hydrophobic (water-fearing) tails, which helps them form a lipid bilayer in the cell membrane.

The most significant difference between a phospholipid and a fat molecule is that the latter is composed of three fatty acids and glycerol and is used primarily for energy storage. On the other hand, phospholipids contain only two fatty acids and glycerol and are the primary building blocks of the cell membrane. The head of a phospholipid is hydrophilic, while the tail is hydrophobic, which makes it different from a fat molecule.

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on rare occasions, a new tetraploid species of plant may form. what factors allow the species to form and propagate?

Answers

When on rare occasions the new tetraploid species of plants are formed then the factors that allows the propagation are chromosome nondisjunction, self replication.

So, if a plant produces diploid gametes via nondisjunction and that they self-fertilize, the end result could be a new, tetraploid species. This species is now reproductively remoted from its discern as though the 2 have been to mate they could create nonviable triploid individuals joining of diploid gametes, self-fertilization, chromosome nondisjunction the character has inherited an extraordinary wide variety of chromosome sets (3n, 5n, etc), they're commonly infertile.

This is due to the fact the chromosomes can not pair up successfully at some point of meiosis and hence no purposeful gametes are produced. If the character has a fair wide variety of chromosome sets, they're commonly fertile.

Answers

Answer:

( d ) have organ system

Explanation:

not found

The diagram below shows a body of water below Earth's surface.

To what does the "X" in the diagram refer?

a divide

a floodplain

a watershed

a water table

Answers

Answer:

A divide

Explanation:

what is the name for the potentially advantageous ""attributes"" to which darwin refers

Answers

The name for the potentially advantageous "attributes" to which Darwin refers is "adaptations."

These are traits or characteristics of an organism that make it better suited to survive and reproduce in its environment. Adaptations can be physical, behavioral, or physiological, and they can be the result of natural selection acting on genetic variation within a population.

Darwin's theory of evolution by natural selection proposes that adaptations arise over generations as individuals with certain traits are more likely to survive and pass on those traits to their offspring. Over time, these adaptations can become widespread within a population, leading to evolutionary change.

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When calcium levels in the blood are too low, the body releases a hormone that removes calcium from the bones. A person who suffers from a certain type of thyroid disease will often have low blood calcium and brittle bones because the body is taking the calcium from the bones. The afflicted person will typically see an endocrinologist, who studies hormones, and an orthopedist, who studies bones. What do these two doctors have in common

Answers

Answer:

They both would need to check the calcium levels

Explanation:

The two doctors would both need to check the calcium levels of the patient.

While the endocrinologist would need to check the calcium level in the blood, the orthopedist would have to check the calcium level in the bones of the patient.

Most endocrine disorders are caused by abnormal calcium levels in the blood while the bones are largely made of calcium. Hence, both doctors would usually need to work with the calcium levels in the blood and bones respectively.

characteristics of normative economic?
good night to all

Answers

Answer:

Here's your answer

Explanation:

Normative economics focuses on the value of economic fairness, or what the economy "should be" or "ought to be." While positive economics is based on fact and cannot be approved or disapproved, normative economics is based on value judgments.

Answer:

According to normative economics, an economy "should be" or "ought to be." Economics is founded on value judgments, not facts.

Explanation:

From what you have learned so far about DNA and RNA, what can you conclude about the role of RNA in the flowering of winter wheat? What questions do you still have?

Answers

Answer:

It synthesize proteins and carry genetic information from DNA.

Explanation:

The role of RNA in the flowering of winter wheat is the synthesis of proteins needed for flowering of plant and also carrying the messenger instructions from DNA in which genetic instructions are present that is required for the growth and development of reproductive stage of winter wheat such as flower. So RNA role is very important in the flowering of winter wheat.

RNA synthesize protein for flowering of winter wheat from using the genetic information on DNA.

DNA:

DNA is a permanent storage of information inside a cell. Every cell contains the same DNA as other cell. Muscle cells and Neuron both have same DNA sequence but they are different.

This in because of gene expression, DNA transcribe the information into RNA and information on RNA sequence is used tor protein production.

Therefore, RNA synthesize protein for flowering of winter wheat from using the genetic information on DNA.

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what is definition of medial in anatomy

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Medial refers to being in the middle or core. It is the inverse of peripheral. The word refers to the general positions of body parts. Lateral, for example, indicates to the side of or away from the Centre of the body.

The ears are positioned lateral to the forehead. The limbs are positioned lateral to the chest. A lateral orientation is a location away from the body's midline. The arms, for example, are lateral to the chest, and the ears are lateral to the cranium. A medial orientation is a posture that is parallel to the body's midline. The eyes, which are medial to the ears on the head, are an illustration of medial orientation.

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The extensor muscles of the upper limb lie almost exclusively in the ______ region of thatlimb.A) posteriorB) anteriorC) medialD) lateral

Answers

So, the correct answer to your question is: A) Posterior

The extensor muscles of the upper limb are responsible for extending or straightening the limb. These muscles are primarily located in the posterior region of the limb.

The extensor muscles of the upper limb are responsible for extending the arm, wrist, and fingers. These muscles are located almost exclusively in the posterior region of the limb. The posterior region refers to the back of the upper limb, which is the side opposite to the palm. This region is sometimes referred to as the dorsal region. The extensor muscles originate from the humerus, the ulna, and the radius bones of the arm and forearm. They then insert onto various points on the hand, wrist, and fingers.

The extensor muscles of the upper limb are important for performing activities such as lifting weights, throwing a ball, and typing on a keyboard. They work in opposition to the flexor muscles, which are located in the anterior region of the upper limb. The flexor muscles are responsible for flexing the arm, wrist, and fingers. Together, the extensor and flexor muscles of the upper limb allow for a wide range of movements and activities.

In summary, the extensor muscles of the upper limb lie almost exclusively in the posterior region of that limb, which is the side opposite to the palm. These muscles play a vital role in performing a wide range of activities and movements, and work in opposition to the flexor muscles located in the anterior region of the upper limb.

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Which term describes when individuals leave more offspring than other individuals?

A: natural selection

B: differential reproduction

C: overproduction

Answers

Option B: differential reproduction

Answer:

b:differential reproduction

Explanation:

When individuals leave more offspring than other individuals.

Reactive oxygen species are created when PC successfully to donate its electron to PS I. O Truc O False

Answers

False. Reactive oxygen species (ROS) are not created when plastocyanin (PC) successfully donates its electron to Photosystem I (PS I) in photosynthesis. PC is a copper-containing protein that shuttles electrons from the cytochrome b6f complex to PS I in the electron transport chain.

Reactive oxygen species, such as superoxide radicals (O2-) and hydrogen peroxide (H2O2), are generated as byproducts of certain cellular processes, including aerobic respiration and photosynthesis. In photosynthesis, ROS can be produced during the light-dependent reactions, particularly in Photosystem II (PS II), where water is split and oxygen is released.

The transfer of electrons from water to PS II can generate reactive oxygen species. However, the specific process of PC donating its electron to PS I does not directly generate reactive oxygen species.

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