Three reasons to use higher percentage of Nguni cattle breeds-
Parasite ResistantThey are heat and light tolerant.High reproduction rateNguni cattle can withstand both extremes of heat and cold since they are light and heat tolerant. They have good resistance to internal and external parasites as well as built-in immunity to diseases transmitted by ticks. They are versatile and robust. Cows will produce 10 or more calves because of their early maturity, fertility, ease of calving, and longevity. The cows wean calves who weigh 45–50% of their body mass with remarkable efficiency. Calves grow at a rate of about 0.70 kg per day until weaning, when their average birth weight is 22.5 kg and they wean at a weight of about 175 kg.
Due to their low birth mass, small uterus, and sloping rumps, Nguni cattle are less prone to dystocia.
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A group of animals that share a particular set of characteristics forms an
assemblage called an
A group of animals that share a particular set of characteristics and forms an assemblage is called a taxon
A taxon is a collection of one or more populations of an organism or populations of organisms that taxonomists consider to be a single entity. A taxon is typically known by a specific name and assigned a certain ranking, even though neither is necessary, especially if and when it is approved or becomes established. Taxonomists frequently disagree over what constitutes a taxon and the standards for inclusion, though. If a taxon is awarded a formal scientific name, one of the nomenclature codes that indicate which scientific name is appropriate for which grouping will subsequently dictate how it should be used.
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Marfan’s syndrome is a disease associated with faulty manufacture of the extracellular protein fibrillin. Since this is a component of elastin, in which of the numbered cells would the damaged gene be expressed?.
Marfan syndrome is related to an autosomal dominant condition.
There are several organs constructed of elastic fibres. Skin, skeletons, and joints are the most frequent organs. Marfan syndrome will show as the chest form, long as well as thin bones (arms, legs, fingers), stretch marks inside the skin, or eye lens.
Marfan syndrome, the genetic illness, affects connective tissue, or even the fibres that hold and attach the organs and other body parts. Marfan syndrome most usually affects the skeleton, blood vessels, heart, and vision. It occurs since the normal growth of connective tissue cannot continue with just one functional copy of such FBN1 gene.
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Which macromolecule is a primary component of cell walls, and which argument provides evidence for how the structure of this molecule relates to its purpose within the cell wall?
Which type of antigen-presenting molecule is found only on macrophages, dendritic cells, and b cells?
MHC II type of antigen-presenting molecule is found only on macrophages, dendritic cells, and b cells.
MHC II type of antigen belongs to a class of major histocompatibility complexes (MHC).
These are normally found on the antigen cells such as B cells, dendritic cells, endothelial cells, and thymic epithelial cells.
MHC cells are very crucial as they initiate the responses of the immune system.
Owing to their selectivity properties, they are present on the antigen-specific CD4+ T cells.
Moreover, they play a key role in controlling and regulating the autoimmunity and immunity systems.
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Is this correct ?!?!?
Answer:
No its the first one
Explanation:
Asexual reproduction allows for a population to boom in a short period of time, since there only needs one organism. That being said its important to note that the offspring will be a clone of the parent, so the genetic diversity is low. However the advantage is that the population grows really fast, think of bacteria. Most reproduce asexually, and bacteria growth is very fast given the right conditions.
A scientist who studies the origin and distribution of all types of diseases is best described as a(n):________
Answer: Epidemiologist
Explanation: I believe it is epidemiologist because they are scientists who usually study the origin, spread, and effects of diseases. This is why you usually find them employed in public health agencies as they study diseases and how to prevent them.
You believe a bacterium is attaching to animal cells by binding to the carbohydrate portion of a specific glycoprotein. To test this hypothesis you pre-incubate the bacteria with various molecules and then test for inhibition of attachment to the animal cells. Which result supports the hypothesis that the bacteria recognize the carbohydrate component of the animal glycoprotein?.
"Pretreatment with the carbohydrate component alone prevents bacteria attachment to the animal cells." is the result which supports the hypothesis that the bacteria recognize the carbohydrate component of the animal glycoprotein.
The glycoprotein molecule is created by the covalent interaction of glycans with the side chains of amino acids. The contact between cells is greatly influenced by this kind of protein. O-glycosylation, N-glycosylation, p-glycosylation, and s-glycosylation are only a few of the several forms of glycosylation that may be distinguished.
The findings demonstrate that pure carbohydrates prevent sperm adhesion just as well as complete glycoprotein.
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Question correction:
You believe a bacterium is attaching to animal cells by binding to the carbohydrate portion of a specific glycoprotein. To test this hypothesis you pre-incubate the bacteria with various molecules and then test for inhibition of attachment to the animal cells. Which result supports the hypothesis that the bacteria recognize the carbohydrate component of the animal glycoprotein?
-Pretreatment with the carbohydrate component alone prevents bacteria attachment to the animal cells.
-Pretreatment with the entire glycoprotein prevents bacteria attachment to the animal cells.
-Pretreatment with the entire glycoprotein allows bacteria attachment to the animal cells.
-Pretreatment with the protein component alone prevents bacteria attachment to the animal cells.
16. How are convection currents in the asthenosphere associated with mid-ocean ridges?
Answer: GoodMorning: ) Ok so this happens When two oceanic plates are pushed away from each other, magma rises to the surface between the plates and creates a ridge.
Explanation: In places where convection currents rise up towards the crust's surface, tectonic plates move away from each other in a process known as seafloor spreading (Fig. 7.21). Hot magma rises to the crust's surface, cracks develop in the ocean floor, and the magma pushes up and out to form mid-ocean ridges.
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How might a pyramid of energy for a grassland community differ between summer and winter? think about the effects the different abiotic conditions by drawing an ecological pyramid of energy each season. explain any differences between the two pyramids.
In the winter, the energy pyramid in a grassland community is thinner than in the summer. Thus, the abiotic factor that determines the differences between the two pyramids is sunlight.
What is a grassland?A grassland refers to an area that is mostly composed of grasses and shrubs. The grassland community depends heavily on the primary productivity from the green grasses. In turn the primary productivity of the grassland ecosystem depends on the energy from the sun.
When there is less sunlight, there would be less primary productivity and little energy is transported across the energy pyramid. The low primary productivity owes to a decreased amount of sunlight.
Hence, in the winter, the energy pyramid in a grassland community is thinner than it appears in summer when the sun is intense.
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1. what is the most important physical difference between lilliputiand and brobdingnagians?
The most important physical difference between lilliputians and Brobdingnagians is that the Lilliputians are tiny and the Brobdingnagians are enormous.
This question is related to the story "Gulliver's Travels."
Lilliputians are much smaller, only 5 to 6 inches tall to accompany their mischievous nature.
While Brobdingnagians are almost seventy-two feet tall. England is 'below them' but they still take out time to listen to other people's opinions.
Gulliver was captured by the Lilliputians who tied him with ropes.
later on, they decided to release Gulliver because he behaved quite nicely and asked for a safe exit from their area.
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Overconsumption of _____ is often linked to chronic disease. multiple select question. sodium
Overconsumption of sodium, saturated fat and sugar increase the risk of chronic disease.
What is chronic disease?A sickness or condition that typically lasts three months or longer and has the potential to worsen over time. Elderly people are more prone to developing chronic diseases, which are typically treatable but not curable. Diabetes, arthritis, heart disease, and stroke are the most prevalent chronic diseases.
Many chronic diseases are caused by:A small number of risk behaviors are responsible for many chronic diseases:
smoking tobacco and being among those who are smoking.Nutritional deficiencies, such as diets high in sodium and saturated fats but deficient in fruits and vegetables.a lack of movement.alcoholism in excess.to know more about chronic disease please check the link given below:
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Why doesn't your blood turn acidic after drinking acidic drinks ?
Answer:
Buffering system of blood
When any acidic substance enters the bloodstream, the bicarbonate ions neutralize the hydronium ions forming carbonic acid and water.
Hi with no value on the nova display indicates that the blood glucose value is over _________ mg/dl or there has been a technique error.
With no value on the nova display indicates that the blood glucose value is over 600mg/dl.
What is blood sugar?Your blood's primary sugar is known as blood sugar or glucose. It is the primary source of energy for your body and is obtained from the food you consume. All of the cells in your body use glucose, which is carried by your blood, to provide energy.
Your blood sugar levels must be kept under control if you have diabetes. Too much blood glucose over an extended period of time might lead to major issues. Having issues with too low or too high blood sugar levels is possible even if you do not have diabetes. It can be beneficial to maintain a consistent routine for your food, exercise, and medication administration. It is crucial to keep your blood sugar levels within the desired range if you have diabetes.
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Consider a protein that is targeted to be excreted to the outside of the plasma membrane. Where would this protein be located in the endoplasmic reticulum?.
Answer:Consider a protein that is targeted to be excreted to the outside of the plasma membrane. Where would this protein be located in the Golgi? It will be embedded in the E.R. membrane with domain X facing the lumen of the E.R.
Explanation:
A pear tree was saved from the site, rehabilitated and eventually returned to the site of the memorial. What is the tree called?.
After surviving the World Trade Center terrorist attacks on September 11, 2001, a Callery pear tree earned the nickname "Survivor Tree."
The "Survivor Tree," a callery pear tree that was found severely injured near Ground Zero in October 2001 with cracked roots and charred and broken limbs, is located on the 9/11 Memorial plaza. It was taken out of the wreckage and given to the NYC Department of Parks and Recreation for care. The tree was returned to the Memorial in 2010 after its recovery and rehabilitation, where it continues to stand as a living symbol of tenacity, survival, and regeneration. The Survivor Tree is an American elm that was alive during the 1995 explosion in Oklahoma City and now resides on the north side of the Oklahoma City National Memorial.Learn more about the Oklahoma city bombing with the help of the given link:
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Where would the lac repressor be bound in a e. coli cell that is growing in low glucose and high lactoze?
Repressor changes its conformation when it binds to lactose, which prevents it from binding to DNA. This enables the transcription of the lactose operon.
What transpires to the lac operon when lactose is absent?The lac operon is turned off in the absence of lactose. This occurs because a protein called a repressor attaches to the operator region. This prevents RNA polymerase from attaching to the operon, which in turn stops the structural genes from being transcribed. Allolactose, which binds to the repressor protein, is created when lactose is present. As a result, the repressor protein loses its ability to bind to the operator region and inhibit transcription. This enables the three structural genes for beta-galactosidase, beta-galactosidase permease, and beta-galactosidase transacetylase to bind and be translated by RNA polymerase.Learn more about the lac operon with the help of the given link:
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The image illustrates a building with a green roof a roof that is covered in
living vegetation. What is a goal of this sustainable practice for societal
development?
A. To replace natural wilderness with more pavement
B. To increase the building's energy costs for heating and cooling
Answer:
reduces the environmental impact of paved surfaces
Explanation:
Apegx
You may notice that the slope in the ice segment is steeper than the water segment.
Why is that?
a) Ice has a higher density than water and is therefore easier to melt
b) More heat is required to raise the temperature of ice
c) More heat is required to melt the ice than to evaporate it
d) More heat is required to raise the temperature of liquid water
The slope in the ice segment is steeper than in the water segment because more heat is required to raise the temperature of the ice.
Ice is heated by changing its phase from solid to liquid, or from ice to water. Melting is required to turn ice into water. Ice melts at 0 degrees Celsius. The temperature won't change until all the ice has melted. The temperature will begin to rise once all the ice has melted.
The transformation of water into gas comes next. Steam is produced when water boils. Water begins to vapourize at a temperature of 1000C. The temperature is unaffected by the phase change. Due to the strong intramolecular hydrogen bonds between water molecules, a large quantity of heat is needed. Before the water molecules can be transformed into vapors, the heat supplied is utilized to first break the hydrogen bonds between the water molecules. As a result, the ice segment's slope is steeper than the water segment's.
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So what makes something alive. CER
claim
something is alive
evidence
it can respire, excrete,move, respond to stimuli, reproduce and grow, and are dependent on their environment.
reasoning
movement internally & eternally is paramount
a cat can move. it is alive
rock does not move it is not alive
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A selection pressure for the development of flower petals might have been: group of answer choices increased attraction for pollinators all are correct increased attraction for predators increased surface area for wind pollination
All are correct, the development of flower petals might cause increased attraction for pollinators, increased attraction for predators, and increased surface area for wind pollination.
Flowers' reproductive organs are encircled by petals, which are modified leaves. To draw pollinators, they are frequently brightly colored or shaped differently. The corolla is the collective name for a flower's petals. Functions of the petal include scent production and color changing which is used to attract pollinators and also attract predators.
Flowers also exhibit different types of pollination and wind pollination is one of it, for flowers that undergo wind pollination require little or no petal since the pollens are to be scattered by wind. The development of the flower's petal in terms of the size, scent, colour depends on what type of pollination, whether the flower attracts pollinators or/and predators.
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What is cellulose?
A. a polysaccharide
B. a protein
C. a lipid
D. a fat
Answer:
polysaccharide
Explanation:
The most important structural component of plant cell walls is cellulose. Cellulose is a carbohydrate found in the cell wall of plants. The carbohydrate is a polysaccharide structure. Polysaccharide is made up of a long chain of several sugar units bonded together by chemical linkage. Polysaccharides examples are chitin, glycogen, cellulose, and starch. On average, a dry plant comprises 40 to 50 percent cellulose.
Could someone help me please
Answer:
2,3,4,6,7 absolutely. 1 no since bacteria is alive and is single celled, 5 no because an example of snakes don't develop, 8, some don't maintain it.
Answer:
__X_Are made of cells and have an organized structure.
__X_Reproduce and pass their genes(traits, characteristics) to offspring.
_X__Metabolize and obtain energy needed for food(light for plants).
___Grow and become larger.
_X__Develop and become specialized(an example is a human going from being carried to crawling, toddling, and then walking).
_X__Over long periods of living, things evolve in response to their environment.
__X_Respond to their environment.
_X__Maintain homeostasis.
Explanation:
I hope this is the answer you are looking for and I hope this helps!
The scientific method gives scientists a way to_______ their think about a problem or question
A. organize
B. categorize
C. solve
D. explain
What is a term for hydrophobic groups that are covalently attached to proteins and tether them to the membrane?
Membrane anchors are the hydrophobic groups that are covalently attached to proteins and tether them to the membrane.
Proteins are bound to membranes by different mechanisms. Some proteins are bound because the hydrophobic regions of the polypeptide chain cross the lipid bilayer several times, and therefore a substantial part of the protein is actually located within the hydrophobic interior of the bilayer (see membrane proteins).
Other proteins have a much weaker association with the membrane, using a relatively small membrane anchor for attachment. Depending on the particular protein, this membrane anchor can be a single hydrophobic segment spanning the membrane of the polypeptide, or a variety of different lipids covalently attached to specific sites in the polypeptide chain.
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How does the function of keratinized stratified squamous epithelium differ from the function of unkeratinized stratified squamous epithelium? give examples of locations for each.
Keratinized stratified squamous epithelium differs from the function of nonkeratinized stratified squamous epithelium in that non-keratinized epithelium is permeable to water whereas cornified epithelium is impermeable to water. Moreover, the keratinized epithelium is an effective barrier, whereas the non-keratinized epithelium is a less effective barrier.
What is keratinized epithelium?
Keratinized epithelium is a stratified squamous epithelium found in the skin, the epidermis of the palms and soles, and masticatory mucosa. The keratinized epithelium forms an effective barrier. Its surface layer consists of dead cells. Keratin deposits on the surface. The cytoplasm of surface cells is replaced by keratin proteins. The keratinized epithelium is therefore dry and impermeable to water. It also provides better protection against scratches.
What is non-keratinized epithelium?
The non-cornified epithelium is a stratified squamous epithelium found in the lips, oral mucosa, alveolar mucosa, soft palate, the underside of the tongue, and the floor of the mouth. Unlike keratinized epithelium, the non-keratinized epithelium is moist and contains living cells in the superficial layer.
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Even a country in which the birthrate and death rate are equal can experience population growth if it also has.
Even a country in which the birthrate and death rate are equal can experience population growth if it also has immigration.
In evolutionary time, migration will often quickly converge gene frequencies among populations. Migration is a powerful mechanism for balancing the gene frequencies of subpopulations in a species in the absence of selection. Gene frequencies will eventually equalize if the migration rate is larger than zero.Migration refers to the movement of people, groups, or populations. Migration facilitates gene flow, or the transfer of genes from one population to another, in terms of genetics. Migration—or, to be more precise, gene flow—alone will quickly bring the gene frequencies of the two populations together if they initially had distinct gene frequencies and if selection is not at work.Therefore, immigration is the correct answer.
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Cells lining the gut need to take in glucose, but at a certain time, the concentration of extracellular glucose is lower than the concentration already stored in the cells. What process is needed here?.
If the concentration of extracellular glucose is lower than the concentration already stored in the cells then the cell needs to undergo Active transport so as to take up the cell.
In the gut wall, active transport takes place. From a low concentration in the stomach to a higher concentration in the blood, sugar is moved with the aid of active transport. This makes it possible for the gut's glucose to be absorbed. The body uses this glucose for Respiration.
What is Active transport?
A type of cellular transport known as active transport involves the movement of materials (such as ions, glucose, and amino acids) across a biological membrane in the direction of an area where a lot of these materials are already present.
Because of this, active transport moves these molecules against their concentration gradient using chemical energy (such as ATP).
As a result, this activity calls for the use of energy as well as the support of membrane proteins such carrier proteins.
The small intestine's wall and root hair cells are frequent locations for active transport (villi).
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Ash from ancient volcanoes blanketed the serengeti plain millions of years ago, helping to preserve in place what kind of record related to human evolution?.
The ash from ancient volcanoes that blanketed the Serengeti plains millions of years ago helped preserve the footprints of the ancient ancestors of humans- the Australopithecines
(Australopithecus afarensis).
Million years ago, the Serengeti plain was blanketed by Ash from ancient volcanoes that preserve the footprints of the ancestors of Australopithecines since the evolution of humans occurred during a period of 15 million years.
During this period, the evolution of different man-like stages occurred which finally led to the modern man.
These stages were
1. Dryopithecus/Ramapithecus
2. Australopithecus afarensis
3. Homo habilis
4. Homo erectus
5.Homo neandarthalensis
6. Homo sapiens (Modern Human)
The 2nd stage of human evolution i.e Australopithecus afarensis probably lived in East African grasslands that are a part of present-day Tanzania.
Laetoli is an archaeological site in Northern Tanzania where footprints of ancient humans were discovered as they were preserved in the ash from volcanoes.
The footprints discovered were probably of Australopithecus afarensis.
Hence, the ash from ancient volcanoes that blanketed the Serengeti plains millions of years ago helped preserve the footprints of the ancient ancestors of humans- the Australopithecines
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How many different proteins, each with a unique amino acid sequence, can be constructed with a length of 8 amino acids?
With a length of 8 amino acids, 25600000000 multiple proteins with distinct amino acid sequences can be built.
What is the definition of amino acid sequencing?The method of determining the arrangement of individual different amino acids and peptides is known as amino acid sequencing. Even thoughted fact that many different amino acids have already been identified in nature, essential proteins inside this human body are made up of only twenty different types.
Why is the sequence of amino acids important?Amino acid sequences have been shown to include vital biological information. The arrangement of amino acids in a given protein, for example, can reveal information about the protein's three-dimensional structure as well as its cellular location, and function, including evolution.
According to the given data:There are various types of amino acids. 20
The number of different associated proteins n amino acids is 20ⁿ.
n = length of amino acid long
n= 8 amino acid length.
20⁸ = 25600000000
With a length of 8 amino acids, 25600000000 multiple proteins with distinct amino acid sequences can be built.
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Several NADH and FADH2 are created in one turn of the Krebs cycle. Where do these molecules go next, and why are they important?
Answer: they go to the Electron Transport System and convert into energy and water.
Explanation:
The NADH and FADH₂ are produced in the Krebs cycle are sent to the final step of cell respiration, electron transport chain. The Krebs cycle does not use oxygen because it runs on NADH and FADH₂.
What is Electron Transport Chain?Electron transport chain is a series of protein complexes and molecules which transfer electrons from one electron donor to the other electron acceptor via different redox reactions and couples this electron transfer reactions with the transfer of protons across the mitochondrial membrane. A series of proteins in the inner membrane of mitochondria are involved in the electron transport chain.
NADH and FADH₂ molecules are formed during the process of Glycolysis and Krebs Cycle which carry the electrons to the electron transport chain in the mitochondria. The electron transport chain runs on a proton gradient which ultimately leads to the production of ATP.
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