15. Which of the following statements about nutrients is
true?
a. All classes of nutrients are essential to human
survival.
. b. Because the body cannot store any
micronutrients, they need to be consumed nearly
every day.
c. Carbohydrates, lipids,
lipids, and proteins are
micronutrients.
d. Macronutrients are vitamins and minerals.
Nutrients are nourishment essentials that are required for growth and development. All classes of nutrients are essential to survival. Thus, option A is correct.
What are nutrients?Nutrients are chemical substances that are required for the healthy and proper development of the body. They can be micro or macronutrients and includes fats, vitamins, carbohydrates, proteins, lipids, fibers, minerals, etc. They provide energy and are involved in bodily activities.
Nutrients are essential and are made by the body or can be consumed from various food sources. It includes vitamin A, D, E, K, C, and B complex along with minerals, fats, water, protein, fibers, and carbohydrates. They must be low in calories and high in energy.
Therefore, option A. nutrients are essential to growth and survival.
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Which populations of species will be most likely to survive when environmental conditions shift?.
Answer: Small animals such as ants, some species of mice and rats, and cockroaches.
Explanation:
The smaller the animal is, the better chance it has to survive in drastic environmental change. (They will not be affected as much because of their size) Hope this helps :)
Humans and sharks are both hunting for
the same type of fqod. What type of
symbiotic relationship is this?
A. commensalism
B. competition
C. predation
Answer: competition
Explanation: the definition for competition in this lesson is two different species hunting for food.
Answer:
A.
Explanation:
I need an explanation but my answer is A.
PLS HELP!!! giving brainliest
You will use Punnett squares to predict the probability that two parents of your species will pass a particular trait to their
offspring. Each parent has two alleles for a particular gene, one on each homologous chromosome.
To prepare to make the Punnett squares, write down the genotypes of the parents for the three traits you'll be predicting.
The feature hair type is coded by a diallelic gene and expresses incomplete dominance. The cross of two wavy haired individuals will produce 25% curly-haired children, 50% wavy-haired and 25% straight-haired children.
What is a Punnett square?
The Punnett square is a cross representation that shows all possible combinations between the parental gametes.
It shows the probabilities of getting offspring with different genotypes and their consequent phenotypes.
Let us say that we are analyzing the feature hair type.
Hair type is coded by a diallelic gene that expresses incomplete dominance.
The dominant allele C codes for curlyThe recessive allele c codes for straight hairThe combination of both alleles in heter0zyg0us state codes for wavy hair.Let us say that both parents have wavy hair.
Cross:
Parentals) Cc x Cc
Gametes) C c C c
Punnett square) C c
C CC Cc
c Cc cc
F1)
Genotype:
1/4 = 25% of the progeny will be h0mzyg0us dominant, CC.
2/4 = 1/2 = 50% of the progeny will be heter0zyg0us, Cc.
1/4 = 25% of the progeny is expected to be h0m0zyg0us recessive, cc.
Phenotype
1/4 = 25% of the progeny will have curly hair (CC).
2/4 = 1/2 = 50% of the progeny will have wavy hair (Cc).
1/4 = 25% of the progeny is expected to have straight hair (cc).
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Protein synthesis (involving Transcription and Translation)
is important in eukaryotic cells. Please explain the two basic
processes here below starting with the cell nucleus and the synthesis of mRNA and ending with formation of a peptide for export
Transcription is the process whereby the DNA molecule is read in the nucleus of the cell to produce mRNA molecule.
The mRNA molecule conveys the information to the ribosome in the cytoplasm where protein molecules are synthesized in a process called translation.
The polypeptide/protein produced are exported for use by the cell.
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1. You have 4.0 g of NaCl. Calculate the number of moles of
NaCl this is (show your work).
Explanation:
i suppose this is chemistry..
no of moles = mass / molar mass
you are given the mass, 4.0g, you need to find the molar mass ( Mr ) of NaCl.
Mr = 23 + 35.5
Mr = 58.5
now that you know the Mr of Nacl, just use the formula:
n = m/mr
n= 4/ 58.5
n= 0.068376..
no of moles = 0.068 moles.
Which subatomic particles affect the charge of an atom without changing the name of the element?
Answer:
Neutrons do not carry an electrical charge so adding or removing them from the nucleus does not change the electrical charge of the nucleus. It does, however, change the mass of the nucleus. Adding or removing neutrons from the nucleus are how isotopes are created.
Explanation:
Which of the following statements best describe the way molecules move across a plasma membrane?
Based on scientific information, small, uncharged molecules can easily pass through the plasma membrane.
What is plasma membrane?Plasma membrane is also referred to as cell membrane and it can be defined as a semi-permeable cell organelle that is found in the body of all living organisms.
The main purpose of the plasma membrane is to prevent the passage of molecules into or out of the cells of all living organisms. Thus, it is semi-permeable and hydrophobic in nature and as such protects the cells depending on the size of molecules.
In conclusion, small, uncharged molecules can easily pass through the plasma membrane.
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There are many ways citizens can influence public policy today. Consider how, with the rise of radio, television, and now the internet, political communication has changed over past decades. In what ways do various forms of media make political communication easier and harder? How does the media play a role in politics?
A communication platform such as social media is persuasive, and often works to change or influence opinions when it comes to political views because of the abundance of ideas, thoughts, and opinions circulating through the social media platform.
Answer:
media is very important for transmission of information and receive information.when it has best director.
What is the results of an unclear thesis statement?
Answer:
The Statement is Unclear
Your reader needs to immediately understand your purpose. If it is vague or unclear, you've lost your audience from the start. Narrow down your focus and use straightforward language to state your main idea.
The ideas and conclusions will be out of the context.
Explanation:
The thesis of the a particular subject must be
strength and well supported
The state of art is one of the way to guarantee a formal way to deterinated a Thesis well sustained.
The searchers of grammar suggest try to read may authors about the subject before you elaborate a thesis.
For these reasons the result of an unclear thesis the conclusions will be out of the context.
Describe how the flow of water changes the temperature at the beach ?
Answer: well ya see the thing about that is..........
Explanation:
that the sea is water and water is
. Why is water so important to cells?
Answer:
Water is an essential constituent of the protoplasm of living cells because it is directly involved in countless biochemical reactions like photosynthesis and respiration. Without it cells couldn't move waste and by-products, take in nutrients, perform intracelluar transportation, functioning and signalling.
Which of the following is an example of how genetic engineering has improved agriculture?
Biotechnology has helped develop canola and soybean oils without omega-3 fatty acids, making them more heart-healthy.
Eggplants have been genetically modified to resist pests, so farmers can use less pesticides and help save the environment.
Technology has advanced, causing many more people to pursue careers in farming.
Soybeans have been genetically modified to be resistant to pesticides, decreasing crop yield.
Answer:
The foundation of Mendelian genetics enabled plant breeders to cross plants with new precision, carefully manipulating the plant genome to produce new, improved varieties. These breeding techniques have been used to develop higher-yielding varieties, including plants resistant to pests or disease
Explanation:
Colorblindness is an X-linked recessive trait. Samantha is colorblind and her husband, Rick, has normal vision. What is the probability that they will have a colorblind son?
Considering the whole progeny, there are 50% of probabilities of having a colorblind son. Considering only boys, there are 100% chances of having a colorblind son.
What is color blindness?Color-blindness is a disfunction characterized by an alteration in color perception.
This alteration might affect perception from only partial confusion and difficulties in distinguishing some tones of green and red, up to no chromatic distinction.
Color-blindness is an X-linked condition.
Women that are h0m0zyg0us recessive will be completely color-blinded (X⁺X⁺), Heter0zyg0us woman has partial color-blindness (X⁺X⁻). Men are or are not color-blinded (X⁺Y or X⁻Y).Available datacolor-blindness is an X-linked recessive condition X⁻ represents the X chromosome carrying the color blindness allele. The allele for color blindness is recessive to the normal form of the gene, X ⁺.Samantha is colorblind. Rick has normal vision.⇒ If Samantha is color-blind, then her genotype is X⁻X⁻.
⇒ If Rick has normal vision, then his genotype is X⁺Y.
Cross: Samantha and Rick
Parentals) X⁻X⁻ x X⁺Y
Gametes) X⁻ X⁻ X⁺ Y
Punnett square) X⁻ X⁻
X⁺ X⁺X⁻ X⁺X⁻
Y X⁻Y X⁻Y
F1) 2/4 = 1/2 = 50% of the progeny is expected to be heter0zyg0us expressing partial-color blindness, X⁺X⁻.
2/4 = 1/2 = 50% of the progeny is expected to be completely color-blinded, X⁺Y.
100% of the girls are expected to be partial-color blinded, X⁺X⁻.
100% of the boys are expected to be color blinded, X⁻Y.
Answer: You can express your answer in two ways,
4/4 = 100% of probabilities of having a colorblind son (you are only considering boys in your answer).1/2 = 50% of chances of having a colorblind son among the whole progeny (this answer includes girls as well).
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Define the base pairing rule (complementary base pairing) in ur own words
Cytosine pairs with guanine and adenine pairs with thymine add in rna, adenine pairs with uracil.
Hope this helps!
Which of the following methods can be used to determine the relative age of rock and strata? Select all that apply.
Oceanography
Stratigraphy
Blostratigraphy
Archeology
Paleontology
Answer:
Stratigraphy and Biostratigraphy.
Explanation:
Relative dating is a method of determination of age, in which one object or organism is compared with the other object or organism found in the heap of strata. It is a method for determining the relative order of the past events, without stating the absolute age.
Stratigraphy is a branch of geology that studies the relative position of the sediments and rocks in the strata with respect to the geological timescale. Biostratigraphy is the branch of stratigraphy which deals with the relative aging of fossils with respect to the strata in which these are found defining a particular period of geological time scale.
What is digestion ? Why do animals require a digestive system
Answer:
Digestion is the breakdown of large insoluble food molecules into small water-soluble food molecules so that they can be absorbed into the watery blood plasma.
Animals require a digestive system because they take food in the form that body cannot directly utilize. The food needs to be broken down into form that body can utilize. Therefore digestive system becomes very important animals. There are various other organisms apart from animals that possess a digestive system For example amoeba has food vacuole that helps in digestion.
Which statement correctly identifies old faithful and explains how it formed?
A.it is a caldera formed from a vent collapsing
B.it is a mud pot formed from pools of boiling, acidic mud.
C.it is a volcanic neck that formed as a result of magma that never erupted.
D.it is a geyser thAt formed due to water heated by magma erupting at earths surface. Tysm!!!!
Answer:
It is C.
Explanation:
Answer: d. It is a geyser that formed due to water heated by magma erupting at Earth’s surface.
Explanation:
What do these two changes have in common milk going sour a snail growing a shell.
Answer:
Fermentation converts the lactose to lactic acid
Explanation:
This makes the milk sour
how does the water cycle play a role in creating weather here on earth?
Answer:
The water cycle shows the continuous movement of water within the Earth and its atmosphere.
Explanation:
This is how the water cycle plays a role in creating the weather. It goes through many different processes that are complex. Liquid water goes through a stage and turns into vapor. Solids can melt and form into liquid.
Answer:
The water cycle absorbs and releases heat energy, which in turn, affects the weather patterns across the globe. When the water evaporates into the atmosphere, heat energy is absorbed. Once the water vapor condenses and falls back into the surface, heat is transferred from the atmosphere toward the ground.
Explanation:
This answer could've been found on go o gle so that's what i did
I dont need brainliest you can give to someone Just telling you and answering.
two examples of diffusion in plants and two in humans or animals.
Answer:
examples of diffusion in plants are:
The uptake of water and nutrients from the soil by the roots
The distribution of nutrients and water to all the parts of the plant
Diffusion of Carbon Dioxide into the leaf of the plants during photosynthesis
Release of oxygen out of the stomata of the leaf
Examples of diffusion in animals are:
Digested food molecules such as amino acids and glucose move down a concentration gradient from the intestine to the blood.
Waste products such as carbon dioxide or urea travel by diffusion from body cells into the bloodstream.
Oxygen moves from high concentration (in the air sac) to a lower concentration (in the blood). Carbon dioxide moves from high concentration (in the blood) to a lower concentration (in the air sac).
Explanation:
How does
photosynthesis transfer
one form of energy to
another?
Answer:
During photosynthesis, the radiant energy is transformed to chemical energy stored in chemical bonds of glucose molecules the plant uses as food.
how can raw water treated in city when supply system for class 5 in the short answer
Answer:
➢ Raw water must be treated or clarified prior to being used as makeup water in most utility processes. Clarification removes suspended and dissolved solids, bacteria, and other forms of impurities to help prevent system scale, corrosion, and fouling.
Explanation:
I hope it will help you have a great day bye and Mark brainlist if the answer is correct
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Do you think that NOAA's classification system clears up any previous confusion caused in defining ecosystems?
Yes, the NOAA's Classification System cleared up the confusion related to the definition of ecosystems. The NOAA is tasked with understanding and describing Earth's system via research and data analysis.
What is NOAA's Classification System?This refers to the National Oceanic and Atmospheric Administration (NOAA) system for classifying types of habitats.
It was founded by Richard Nixon in 1970, the 37th president of the United States of America.
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Explain the concept of nitrogen as a limiting nutrient? What are the consequences of over-fertilizing crops with NPK or nitrogenous fertilizers?
Answer:
Nitrogen is a substance for the production of ammonia NH3 and other substances, as well as for the growth of plants, which reaches the plant through the nitrogen cycle, but nitrogen fertilizers are also injected into the soil to strengthen the plant, but excessive injection of nitrogen fertilizer kills the plant. Is
1. In an animal cell undergoing mitosis, the spindle first appears as two aters, structures in which fibers radiate out from each centriole. Would you expect to find asters in plant cells? Why or why not? PLS HELP OMG ILL MARK U BRAINLIST JUST OLS
Answer:
Millions of the centrioles migrating
Answer: No
Explanation: Plant cells have no centrioles, there would be no structures from which the fibers could radiate. In animal cells, asters form around the centrosomes during a mitotic division. Plant cells lack centrosomes, therefore, asters are not formed during mitosis in plants.
what do all of the masa extinctions have un common?
Answer: they were is a bad habitual position and were losing life's because of food, predators (humans), or other causes
a change in a gene due to damage or incorrect copying is called
Answer:
Mutation very rare also for extra information you can for the process of how dna creates things out of protein
A cold front is the zone where a cold air mass is replacing a warmer air mass. What do you predict will happen to the weather at a cold front when the air is humid? Use cause-and-effect relationships and evidence from your experiment to support your prediction.
***REMEMBER, THE QUESTION IS ASKING WHAT WILL HAPPEN TO THE WEATHER IF A COLD FRONT ENCOUNTERED HUMID AIR. REMEMBER TO MENTION THE CAUSE AND EFFECT***
Answer:
the temperature will change
Explanation:
1)Which of the following parts of the body
has cortical motoneurons with the largest
representation on the primary motor cortex
(area 4)?
(A) Shoulder
(B) Ankle
(C) Fingers
(D) Elbow
(E) Knee
Answer:
Ankle
Explanation:
Ankle has cortical motoneurons with the largest representation on the primary motor cortex.
What is cortical motoneurons?"The neurons that lies in the upper motor cortex and is responsible for the voluntary movement."It is present in hands and ankle region.What is primary motor cortex?"The primary motor cortex is located in the precentral gyrus."It is composed mainly of motorneurons.It requires the least amount of electrical impulse for a movement.It generates signal to direct the movement of body.It is responsible for the complex voluntary movements.
Hence, the correct option is B. Ankle.
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