Ensuring that the DNA code is maintained during DNA replication and cell division is one of the essential effects of DNA structure.
What is the DNA?DNA is a double helical structure found in the nucleus of a cell that contains information about the cell and which directs the activities of the cell.
The information about the cell that is contained within the DNA is known as the gene.
This information is passed on to daughter cells when the cells divide during the process of cell division.
The information stored in the DNA is accurately copied during the process of cell division, and the DNA has mechanisms that ensure this.
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Complete question:
Ensuring that the DNA code will be maintained during cell growth and cell _________ is one of the two essential effects of the structure of DNA.
What are the three types of fossiles and what made them form different
Three different types of fossils are impression fossils, trace fossils, and replacement fossils.
Impression fossils form when a leaf, shell, skin, or foot. leaves an imprint in soft earth. When the imprint hardens, it forms a fossil in the shape of the original.
Trace fossils They tells about geological records of the activities and behaviors of past life. These fossils are different from body fossils that preserve the actual remains of a body such as shells or bones.
Replacement occurs when the original shell or bone dissolves and then gets replaced by a different mineral . Mostly leave and ferns and dark imprint of fossils .
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Which of these is not a lipid? options- A. Fats B. Oils C. Proteins D. Waxes..
Answer:
C. Proteins
Explanation:
Fats oil and and waxes are lipids
Proteins are made up of amino acids. The correct answer is option C.
What are bio molecules ?Bio molecules are the biological molecules that are comprised of molecules which are chemical in nature where the biological function is performed by these molecules. The basic constituents of these molecules are C,H and O.
Proteins are formed by amino acids which has one amine group along with carboxylic acid. This is why amino acid has the dual nature of both acid as well as a base and the amino acids are the major constituents of proteins.
Proteins basically are peptide molecules in which there is chain of amino acids in which they form a functional molecule. There are 20 amino acids that are called as essential amino acids.
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Which type of organism gets energy from breaking down nutrients and uses co2 as a carbon source?
Chemo-heterotrophs gets energy from breaking down nutrients and uses carbon dioxide as a carbon source.
Chemoheterotrophs: microbes that use organic chemical substances as sources of energy and organic compounds as the main source of carbon. an organism that gets its energy from consuming intermediates or building components that it can't make on its own.
Organisms classified as heterotrophs obtain their energy by the regulated oxidation of preexisting organic molecules, or food. Humans are heterotrophs, just like the majority of other animals, fungi, protists, and bacteria. In their environments, autotrophic organisms frequently serve as the primary producers.
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of cephalochordates, urochordates, and vertebrates, which two are most closely related to each other than they are to the third, according to the most recent studies?
Urochordates and vertebrates are more closely related to each other than they are to the third, according to the most recent studies.
What is Urochordate?
The closest cousins of vertebrates are tunicates or urocordates. They are latitude-neutral marine organisms that feed through filters and can live either a planktonic or benthic lifestyle. With a few rare exceptions, they are hermaphroditic creatures that undergo indirect development. Tadpole-like swimming larvae are present in almost all tunicate species. In the class Ascidiacea, colonialism is common and a larval stage followed by metamorphosis is the norm.
An invertebrate with dorsal nerve cords and notochords called a Urochordata lives in the marine sea. They belong to the tunicate subphylum.
All animal taxa belonging to the subphylum Vertebrata, including all mammals, birds, reptiles, amphibians, and fish, are referred to as vertebrates. With around 69,963 species now known, the phylum Chordata is dominated by vertebrates.
Hence the correct answer is Urochordates and vertebrates.
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the main contributors to protein intake in the us is/are:
The main contributors to protein intake in the us is/are: meats and dairy.
Complete proteins, or those that include all of the essential amino acids our bodies require, are found in animal proteins like meat, eggs, and milk. The best sources of protein are those found in animal products.
Dairy products like milk, cheese, and yogurt are not only great sources of protein, but they are also rich in essential minerals like calcium and vitamin D. The two main proteins in milk are casein and whey protein. In bovine milk, casein makes up around 80% (29.5 g/L) of the total protein, while whey protein makes up about 20% (6.3 g/L).
Therefore, the main contributors to protein intake in the us is/are: meats and dairy.
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Standard NCES.7.L.1.2-Which of the following allows materials to enter and leave a cell?
Group of answer choices
cell wall
mitochondrion
vacuole
cell membrane
Answer:
Cell membrane
Explanation:
The cell membrane is the outer lining of the cell which allows materials to enter and leave the cell.
How does hibernation help animals survive?
Responses
a.Hibernation increases the chances of meeting a mate.
b.Hibernation reduces the energy required for survival.
c.Hibernation protects the animal young from predators.
d.Hibernation makes access to food easier.
Answer:
I think the answer is B, hibernation reduces the energy required for survival
HELP ME FAST PLEASE What is a gamete?
a cell from a zygote with the diploid number of chromosomes
a cell used for reproduction that contains the haploid number of chromosomes
a cell used to protect the internal parts of the body that contains the diploid number of chromosomes
a cell used for reproduction that contains the diploid number of chromosomes
Answer:
a cell used for reproduction that contains the haploid number of chromosomes.
Explanation:
A gamete is a mature haploid male or female germ cell that is able to unite with another of the opposite sex in sexual reproduction to form a zygote.
Which of the following are correct statements regarding blood cell interactions with vascular endothelial cells?
a. Red blood cells and platelets are produced in the bone marrow, but white blood cells are produced in the thymus.
b. Red blood cells, white blood cells and platelets are all produced in the bone marrow.
c. Leukocytes is another name for red blood cells.
d. Plasma is the liquid portion of the blood.
e. Erythropoeitin stimulates the production of red blood cells.
Red blood cells and the endothelial cells that line blood vessels do not interact, hence option b is correct. This is how vascular endothelial cells interact with one another.
The most prevalent form of cell in blood are red blood cells, commonly known as endothelial cells. White blood cells, platelets, and plasma are further important blood constituents.
the kind of endothelial cells that coats lymphatic and red blood cells ; these cells are typically squamous (flattened) and form sheets that are one layer thick. Embryonic mesenchyme cells give rise to endothelial cells. The term "endothelium" refers to a layer of endothelial cells.
Abstract The inner cellular lining of arteries, veins, and capillaries is made up of a monolayer of endothelial cells (EC), which puts the vascular endothelium in direct contact with the cells and components.
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Upon release from the terminal cisternae, some calcium ions bind to ______ causing it to change shape.
Answer: troponin
Explanation: Calcium released from the sarcoplasmic reticulum bind to a subunit of globular troponin, a component of thin filaments.
if a deer herd has a population of 1,000, a carrying capacity of 2,000, and an intrinsic rate of growth of 10% (0.1), what is true of this deer population?
Breaths > Deaths is the population's genuine ratio.
Which population do you refer to?The total population or people of a nation or region. b: the entire number of people occupying a space or constituting a whole. c: the overall number of particle at a specific level of energy, particularly when referring to particles in a laser.
What is density and an illustration of it?A collection of creatures of the same species that coexist and breed in the same location at the same (e.g., human population, the population of apple trees, total population of deer in a forest). It is a percentage of a species' total population that lives in a particular area of the world.
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Put the steps of Cellular Respiration in order.
1. Two molecules of pyruvate move into the mitochondria where they are converted into Acetyl CoA. More NADH is produced and CO2 is released.
2. Glycolysis takes place in the cytoplasm and breaks down glucose to form two molecules of pyruvate. 2 ATP are produced and NADH is saved for later.
3. In the Citric Acid/Kreb's Cycle the carbons that are left from the initial glucose are oxidized releasing more CO2. NADH and FADH2 and 2 ATP molecules are produced.
4. Energy is used to produce about 34 ATP. Oxygen is the terminal electron acceptor that combines with oxygen to produce water.
5. In the electron transport chain, the NADH and FADH2 give up electrons, energy is released and captured as it moves from a high concentration to
low concentration.
Steps in Cellular Respiration are as follows 2-1-3-5-4
Cellular respiratory is the process by way of which organic fuels are oxidized within the presence of an inorganic electron acceptor inclusive of oxygen to supply huge amounts of electricity, to drive the majority production of ATP.
It's far a chemical system wherein oxygen is used to make electricity from carbohydrates and sugars. also referred to as aerobic metabolism, aerobic respiration, and unicellular respiration works either inside the presence or absence of oxygen. however, basically, the method is called cell respiration because the cellular appears to “respire” in a manner that it takes in molecular oxygen and releases carbon dioxide as a cease product.
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atom can be broken down by chemical reaction
What do you think would have the greatest effect on the body—a harmful mutation in a pluripotent embryonic stem cell, or a harmful mutation in an adult multipotent stem cell
A pluripotent embryonic stem cell's detrimental mutation has the most impact on the body.
embryonic stem cells with pluripotency:
within an embryo
is charge of organ development.
An unhealthy mutation will lead to an organ development problem.
The infant can pass away.
Adult stem cells with pluripotency:
found in adults
responsible for less cell growth.
Defects brought on by deleterious mutation may be fixed.
As a result, we may infer that a pluripotent embryonic stem cell's detrimental mutation has the largest impact on the body.
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due to the structural requirements for dna polymerases and the mechanism of replication of chromosomal dna, dna polymerases cannot replicate __________.
The 3' ends of linear DNA strands cannot be replicated by DNA polymerase.
A family of enzymes known as DNA polymerase is responsible for the synthesis of DNA molecules from nucleoside triphosphates, which are DNA's molecular precursors.
The enzyme DNA polymerase aids in the synthesis of DNA molecules from the building blocks of DNA, deoxyribonucleotides. They are necessary for DNA replication and typically function together to form identical DNA strands.
The initiation of DNA strand synthesis necessitates the presence of a 3' OH group by DNA polymerases. As a result, it can only synthesize in one direction by extending the 3' end of the nucleotide chain that already exists. This implies that the DNA polymerase forms the daughter strand in a 5'-to-3' direction as it moves along the template strand.
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Which idea is most directly related to Lamarck’s beliefs about evolution?
A frog’s legs grow during life to help it jump farther, and it passes on the longer legs to its offspring.
Humans and primates are classified in the same genus because they have similar traits.
If a population is left to reproduce without limiting factors, it will outgrow its food supply.
In one area, brown moths are better adapted to the environment than white moths, so they survive and reproduce.
Answer:
A frog’s legs grow during life to help it jump farther, and it passes on the longer legs to its offspring.
Explanation:
Lamarck believed that accumulation of small changes through successive generations promote the developement of new organs or characters which are transmitted to the offspring in the next generation (such as elongation of frog's leg). This is called inherirance of acquired characters.
If the population of a species is greater than its carrying capacity for a long time, what can that do to available resources in its ecosystem?
Answer: This can decrease our resources
Explanation: Since there are more people in the population that's going to take up more resources for more houses food and buildings.
What is the structure of prokaryotic chromosomes?
(a) circular DNA tightly wrapped around histones
(b) circular DNA with no histones
(c) long, linear DNA with no histones
(d) long, linear DNA tightly wrapped around histones
The structure of prokaryotic chromosomes is circular DNA tightly wound around histones.
What is the structure of DNA in prokaryotes?Chromosomes have a basic structure: a DNA molecule that has portions wrapped in grains formed by eight molecules of a protein called histone. Each histone grain with coiled DNA is called a nucleosome.
What is the function of the chromosome?A chromosome can be demarcated along its length into thousands of regions called genes. The function of chromosomes is to control cell functions. In addition, they carry an individual's genetic information through genes.
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which has its cell body in a ganglion?
postganglionic nerve cell. Ganglions are groups of nerve fiber cell bodies that are found in the peripheral nervous system (PNS).
Two major sections make up the peripheral nervous system: Controls uncontrollable body processes and manages glands is the job of the autonomic nerve system (ANS). The somatic nervous system (SNS) is responsible for regulating muscle action and transmitting sensory information to the brain from the skin, ears, and eyes. The majority of your senses are fed information by your PNS into your brain. You can move your muscles thanks to the signals it transmits. The brain uses signals from your PNS to command essential, automatic functions like breathing and pulse. The brain and spinal cord are components of the central nervous system (CNS), whereas all nerves that leave the brain and spinal cord and travel to other regions of the body, such as muscles and organs, are a part of the peripheral nervous system.
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2.why does an individual with antibodies for a species of streptococcus bacteria not automatically have immunity to all bacterial infections?
Numerous proteins found in the Helicobacter pylori secretum interfere with innate immune reactions.
These substances can attach to and obstruct Fc recognition by skilled phagocytes, or they can target monoclonal antibodies and/or complementary components for destruction in order to evade the action of the complement.
The scientists discovered that Group A Schizophrenia (GAS) produces the S peptide, a previously unidentified protein that clings to the membrane of red blood cells to prevent being ingested and eliminated by phagocytic lymphocytes. Consequently, a person does not necessarily become immune to all bacterial infections just because they have antibodies for a kind of streptococcus bacteria.
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please help with this go understand!! can you answer the blanks also the ones that are filled too (they are probably wrong!)
The represented table is about the muscles, the proper working of the muscles, their structure as well as the types of the muscles.
What is muscle?Muscles has been defined as an action potential travels along the nerves to the muscle. The beginning of the muscle contraction occurs with the signal generated from the nervous system.
There are mainly two types of muscle contraction and the situation has been occur when the muscle has been contracted and a change in the size takes place. Isotonic concentric contraction has the type of muscle contraction in which muscle has been shortening takes place.
Therefore, The represented table is about the muscles, the proper working of the muscles, their structure as well as the types of the muscles.
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The image below represents an organism that a student observed while examining a sample of pond water with a light microscope. The student identified this organism as a prokaryote. Is the student's identification of the organism accurate, why or why not?
*
Captionless Image
The student identified this organism as a prokaryote the Trichodina has a nucleus.
You can find simple life forms like bacteria big oxygen producers like algae extraterrestrial protozoa of all kinds, and cute microscopic animals like petrels. A light microscope can magnify water droplets in a pond 100 times. It shows an active community of protozoa.
Nostoc and Anabaena are some of the most common bacteria found in pond water. As cyanobacteria, they are also responsible for the greenish color of pond water. Using an optical microscope we can observe living organisms and their movements. For example, you can observe microbes living in pond water droplets. Another type of microscope is the electron microscope.
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Which term names the metamorphic change to a rock that results mainly from the heat energy of nearby magma?.
Answer:
Contact metamorphism.
what are three types of consumers and how are they different
Answer:
Primary consumer are herbivores
Secondary consumer are carnivores
Tertiary consumer
The three sorts of consumers in the animal kingdom are carnivores, herbivores, and omnivores.
i. Carnivores eat only meat.
ii. Herbivores eat only plants, while
iii. omnivores have to consume both plants and meat to satisfy their dietary requirements.
Generally speaking, the citizenry is an omnivore. they have both plants and meat to survive. However, there are those that choose not to consume meat. they're called vegetarians.
Samples of herbivores are cows and sheep, which have unique digestive systems capable of breaking down the material.
Carnivores usually eat herbivores, and an example of those meat-eating animals is wolves. Some insects also can be carnivores, like the dragonfly, which hunts other insects for food.
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what effect might you expect in a eukaryotic organism in which an enzyme essential for adding the 5' cap to rna polymerase ii transcripts was nonfunctional?
The organism wouldn't be able to make mRNA transcripts that are stable.
How is mRNA added with 5 cap?The guanyl transferase enzyme adds the cap. The reaction between a guanine triphosphate (GTP) molecule and the 5' end of the RNA transcript is catalysed by this enzyme. The interaction between the GTP molecule and the 5' end of the RNA transcript is easily shown in the above image. The cap, which is a modified guanine (G) nucleotide, guards the transcript against degradation. Additionally, it aids in ribosome attachment and mRNA reading, which is necessary for protein synthesis.
Prior to moving from the nucleus to the cytoplasm and beginning the process of translating into a protein, eukaryotic mRNAs must go through a number of processing stages. Eukaryotic mRNA maturation involves extra stages that result in a molecule that is far more stable than a prokaryotic mRNA.
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Write down the names of the organelles / molecules are involved in some way in building proteins.
Ribosomes are involved in some way in building proteins.They consist of two subunits and are found either lodged in the endoplasmic reticulum or floating freely in the cytoplasm of the cell.
The cell's protein producers are called ribosomes. The ribosome, which translates the genetic code generated in mRNA into an amino acid sequence, is universally responsible for protein synthesis. Ribosome structure and basic elements. About two times as big as the tiny subunit is the large subunit. Decoding the message and creating peptide bonds are the two main jobs of ribosomes. The ribosomal subunits are two big, unequal-sized ribonucleoprotein particles (RNPs) that carry out these two functions. There are many ribosomal proteins and one or more ribosomal RNAs (rRNAs) in each subunit (r-proteins).
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Which of the following is the most important function of the skin? separating the body from its environment
B.
storing fat for energy use
C.
sweating to keep body temperature warm
D.
absorbing sunlight for energy
The most important function of the skin is separating the body from its environment and it is denoted as option A.
What is Skin?This is referred to as an organ which is responsible for the protection of individuals from foreign bodies and external agent due to its structure and and constituents.
The skin has three main layers which ensures that the body system is well protected and covered and is the largest organ of the body. The skin also helps to regulate the body temperature but it isn't its main function which was therefore the reason why option A was chosen.
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all systems in the body are affected by bed rest or immobility. for the immune system, research has demonstrated that interleukin (il)-1, il-6, and tumor necrosis factor–alpha are increased during immobility or bed rest. what are these mediators associated with?
Findings suggest that IL-1 and TNF-alpha play an essential role in the acute stage of brain abscess development by regulating the subsequent anti-bacterial inflammatory response and they are increased during
What exactly are TNF and IL-6?
TNF-alpha and interleukin-6 are two cytokines that are important in the regulation of B-cell function (IL-6). They play different roles in B-cell differentiation and can be produced by B cells themselves when stimulated appropriately.
TNF and IL-1 are cytokines that are required for activating the innate immune response, mediating the recruitment, activation, and adherence of circulating phagocytic cells (macrophages and neutrophils), and terminating the innate immune response, respectively.
Therefore, IL-6 can promote the differentiation or proliferation of various non-immune cells.
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Which statement describes how the above labeled organelles interact within a cell?
A.
#1 releases energy for protein production and #5 produces the proteins.
B.
#2 releases energy for protein production and #3 allows proteins to enter and exit the cell.
C.
#4 provides instructions for making proteins and #2 site of protein synthesis.
D.
#5 packages and sorts proteins and #3 allows proteins to enter and exit the cell.
The statement that describes how the above labeled organelles interact within a cell are option C. #4 provides instructions for making proteins and #2 site of protein synthesis.
How do organelles communicate among themselves in a cell?Through MCSs, a lot of organelles are in close contact with one another. The most common theory is that these contact sites form as a result of membrane proteins acting as points on the contacting organelles.
Note that Organelles communicate with one another and MCSs are locations where two or more organelles are very close to one another and pass metabolites, and proteins in a lot of ways.
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You are a family practitioner. Which of the following patients you see is most likely to need Vitamin D supplements?
A. A man with olive skin who lives in Florida.
B. A woman with dark brown skin who lives in Michigan.
C. A woman with light brown skin who works outside year-round.
D. A man with light skin who spends his winters in Texas.
You are a family practitioner. A woman with dark brown skin who lives in Michigan of the following patients you see is most likely to need Vitamin D supplements.
What is Vitamin D?
Vitamin D is a fat-soluble vitamin that is added to some foods, found naturally in a few, and sold as a dietary supplement. When ultraviolet (UV) rays from sunshine strike the skin and start the synthesis of vitamin D, it is also created endogenously.The body needs to go through two hydroxylations in order to activate vitamin D that is consumed through diet, supplements, and sun exposure. During the first hydroxylation, which takes place in the liver, vitamin D is changed into 25-hydroxyvitamin D, sometimes referred to as "calcidiol." The second hydroxylation, commonly known as "calcitriol," is predominantly carried out in the kidney and results in the physiologically active 1,25-dihydroxyvitamin D.
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