Living organisms have different characteristics and they respond to stimuli, respire, move, dependent on the environment, reproduce, and growth.
All living organisms are made up of a large number of cells. Each cells have a nucleus and cytoplasm. If the nucleus is present in the cell is called a eukaryotic cell and if the nucleus is absent is called a prokaryotic cell. Each cell present in the living organism has a specific function.
Thus, living cells have the characteristics to reproduce, and grow organisms, and living organisms react to the environment, regulation, homeostasis, energy processing, and respiration. These characters define life.
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Select all that apply.
Carbohydrates are found in foods that contain:
starch
protein
amino acids
fats
sugar
Answer:
The answer is starch and sugar
Explanation:
___ are capable of differentiation to form specialized cells.
A.Gamete Cells
B.Stem Cells
C.Chromosomes
What is one major difference between sandstone and slitstone
Helppp pleaseeee !
1. The bodys nonspecific defenses against invading pathogens include ?
A.antibiotics
B.mucus, sweat, and tears
C. antibodies
D. cytotoxic T cells
2. The body's most important nonspecific defense is ?
A. The skin
B. Cell mediated immunity
C. the inflammatory responce
D.permanent immunity
The most important part of the body that shows non-specific defense against invading pathogens is skin (A). They include sweat, acid, mucus, oil in non-specific defense (B).
Further Explanation:
Skin is the major organ of the body, which has several features that shield the body from infections. Skin plays a very important role in nonspecific defense against pathogens. The skin surface receives the secretions from the sweat glands which contains lysozyme. This enzyme is responsible for digesting the bacterial cell wall. This feature alone does not make the skin barrier to infections. The acidic pH and mucus secretion also contribute to the barrier properties of the skin.
The sweat glands and oils are accountable for the acidic pH of 3-5 of the skin surface. This pH is acidic enough to inhibit the growth of pathogenic microorganisms. The skin surface receives the secretions from the sweat glands which contains lysozyme. This enzyme is responsible for digesting the bacterial cell wall. The mucus that is secreted by the skin is a sticky fluid that is responsible for trapping the microorganisms.
The mucus that is secreted by the skin is a sticky fluid that is responsible for trapping the microorganisms. This is one of the few characteristic features of the skin that is responsible for acting as a barrier to infection.
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Answer Details:
Grade: High School
Subject: Biology
Topic: Non-Specific Defense
Keywords:
Skin surface, non-specific defense, skin, lysozyme, interferons, complements, trap, Micro-organism, cell wall, sweat gland, oil, surface.
Farmer brown believes that increasingly large doses of antibiotics will produce increasingly large beef cattle. what is the correct match between experimental variables and activities in farmer brown's experiment?
a. dependent variable; all cattle receive the same hay, water, and living quarters.
b.control variable; different groups of cattle are given different doses of antibiotics.
c.independent variable; farmer brown tests only antibiotic x in even incremental dosages.
d.hypothesis; farmer brown observes that dosage with 500 mg of antibiotics produces the most weight gain.
In Farmer Brown's experiment, the correct match between experimental variables and activities is as follows:
c. independent variable; farmer brown tests only antibiotic x in even incremental dosages.
What is the correct match between experimental variables and activities in farmer brown's experiment?
Independent Variable: This is the variable that the researcher manipulates or changes in an experiment. In this case, the independent variable is the dosage of antibiotics, and Farmer Brown is testing only antibiotic x in even incremental dosages.
Dependent Variable: This is the variable that is measured or observed as the outcome of the experiment. The statement doesn't explicitly mention what is being measured, but it's likely to be related to weight gain in cattle since the hypothesis talks about weight gain.
Control Variable: This is a variable that is kept constant to ensure that any observed effects are due to the independent variable and not other factors. The statement doesn't provide information about controlling other variables, but it's implied that cattle receive the same hay, water, and living quarters, which would serve as control variables.
Hypothesis: The hypothesis is a statement that predicts the expected outcome of the experiment. In this case, the statement "farmer brown observes that dosage with 500 mg of antibiotics produces the most weight gain" represents a hypothesis.
Therefore, option c is the correct match based on the information provided.
Final answer:
The correct match for Farmer Brown's experiment regarding the increasingly large doses of antibiotics on cattle size is the independent variable; different doses of antibiotics administered to cattle groups. The dependent variable is the weight or size of the cattle, and control variables are the consistent elements like hay, water, and living conditions.
Explanation:
In any given experiment, it is crucial to understand the different types of variables involved. The independent variable is the one that is changed by the experimenter to test its effect on the dependent variable, which is the variable being measured.
Thus, in Farmer Brown's experiment, the correct match between experimental variables and activities would be independent variable; different groups of cattle are given different doses of antibiotics. This is because the doses of antibiotics given to the cattle are the factor that Farmer Brown changes to see if it has an effect on the size of the beef cattle, which would be the dependent variable.
The control variable in this experiment would be all the other conditions that are kept constant, such as the type of hay, the amount of water, and the living quarters. If Farmer Brown observes that a dosage of 500 mg of antibiotics produces the most weight gain, it could be the formation of a hypothesis based on the initial results, which would need to be tested further with controlled experiments.
suppose a population is carrying a condition controlled by two alleles R (dominant) and r (recessive). if the frequency of the r allele is 15% and the frequency of the R allele is 85%. what will be the frequency of the RR genotype ,assuming evolution is not occuring?
Answer:
Frequency of the RR [tex]= 72.25[/tex]%
Explanation:
Given -
R is the dominant allele and r is the recessive allele.
The frequency of the r allele is [tex]15[/tex]%[tex]= 0.15[/tex]
The frequency of the R allele is [tex]85[/tex]%[tex]= 0.85[/tex]
As per Hardy Weinberg's equation-
[tex]p = 0.85[/tex]
[tex]q = 0.15[/tex]
Also, evolution is not occurring is the basic assumption of Hardy Weinberg's principle.
Frequency of the RR genotype is equal to [tex]p^{2}[/tex]
Substituting the value of "p" we get
[tex]p^{2} = 0.85^{2} \\= 0.7225\\= 72.25[/tex]
What is the difference between entomophily and anemophily?
Which of the following best describes the relationship between climate and latitude?
The greater the latitude, the colder the climate.
A latitude of 0o has a climate of extreme temperature ranges.
There is no relationship between latitude and climate.
The lower the latitude, the colder the climate.
Answer:
The best answer choice to the question: Which of the following best describes the relationship between climate and latitude, would be: A: The greater the latitude, the colder the climate.
Explanation:
The explanation is best given not with the understanding of latitudes and climate, but rather, the position of the Earth in regards to the Sun, and its movements, that will bring places further away from the equator (latitude 0), closer to the direct rays of the sun, or further away. However, it is also important to know that as locations move away from the equator, towards higher latitudes, meaning, towards the poles, these places will have lower temperatures, than those on the equator, and definitely will have temperature changes, going from high, to low, depending mostly, on Sun exposure, due to the changes in position of Earth. This also explains why places at greater latitudes experience seasons, and not those at the equator.
Does the greenhouse effect maintain earth's temperature range
What is a force that causes an object to change its shape?
2. In Africa, Nile crocodiles can often be seen lying in the sun, their jaws held open. Small white egrets perch on the crocodiles’ backs or hop in and out of their mouths. The birds also peck at the crocodile’s teeth, feeding on the scraps of food embedded there. Although crocodiles do eat some birds, they do not eat egrets.
a. What is the term for the relationship between the crocodiles and the egrets?
b. Explain this relationship.
Answer:
Mutualistic symbiotic relationship
Explanation:
1. The relationship between egrets and the crocodile is a form of symbiotic relationship that is predominantly mutualistic relationship
2. In a mutualistic symbiotic relationship , two species associate with each other in order to benefit each other. Here egrets feed on food scrap stuck in the teeth of crocodile to feed itself while on the other hand crocodile is also benefited as the waste left out of food stuck in its teeth is cleaned off.
Sweating is a process that helps cool the body during strenuous exercise. This is an example of
Answer:
The answer is 3 if its on ur test
Explanation:
Chromosome mutations involve the deletion or duplication of many genes. The effects of chromosome mutations are often much greater than mutations within a single gene, because chromosome mutations A. can only occur at the time of fertilization. B. can cause abnormal development of the offspring. C. are always beneficial to the organism. D. are rarely passed on to the next generation.
The effects of chromosome mutations are often much greater than mutations within a single gene, because chromosome mutations can cause abnormal development of the offspring. The correct option is B.
What is mutation?A mutation is an alteration in an organism's DNA sequence. Mutations can occur as a result of errors in DNA replication during cell division, mutagen exposure, or viral infection.
Mutations transpire whenever a DNA gene is compromised or altered in such a way that the genetic notification conducted by that gene is altered.
A Mutagen is a chemical that causes a permanent change in the physical constituents of a DNA gene, altering the genetic message.
Changes in the structure of chromosomes can disrupt the growth, development, and function of the body's systems.
These changes can have an impact on many genes along the chromosome and disrupt the proteins produced by those genes.
Thus, the correct option is B.
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Chromosome mutations like deletions and duplications can cause substantial changes, often leading to abnormal development of the offspring due to their impact on multiple genes. Option B is correct.
Chromosome mutations involve significant alterations to chromosome structure and can lead to major biological consequences. As opposed to gene mutations, which affect only a small segment of DNA, chromosome mutations include deletions, duplications, inversions, translocations, and changes in chromosome number. These large-scale mutations can result from unequal crossing over during meiosis, structural rearrangements, or errors in chromosome segregation.
For example, duplications in chromosomes can have profound evolutionary impacts, allowing for gene copies to acquire new functions over time. However, such chromosomal alterations are often deleterious, leading to diseases like Down Syndrome, which is caused by the presence of an extra copy of chromosome 21, resulting in developmental delays and various other abnormalities.
However, the effects of chromosome mutations are often much greater than mutations within a single gene because they can cause abnormal development of the offspring. The disruptions these mutations cause can affect many genes, leading to more severe phenotypic consequences.
Hence, B. is the correct option.
The active form of vitamin d is
A student sees several ants walking up a wall following the exact same trail that an ant took earlier. She wants to apply the scientific method to determine how the ants detected the trail. Which of these steps would come first in her application of the scientific method?
A.Perform an experiment by cleaning the scent away from part of the trail.
B.Draw a conclusion that the ants follow a scent trail.
C.Make a prediction about what the ants will do after she cleans away part of the trail.
D.Hypothesize that the ants are following a scent trail that the first ant left.
The answer is C. Make a prediction about what the ants will do after she cleans away the part of the trail. You're welcome :)
In a scientific investigation, the term “quantitative data” refers to numbers that are usually followed by
Answer:
The correct answer are units.
Explanation:
In a scientific investigation, quantitative data signifies towards the numbers, which are usually succeeded by units. Exact quantities are used in quantitative data. The manner in which the researchers and scientists utilize a coordinated approach to answering the queries regarding the world surrounding us is known as a scientific investigation.
The amnion is an extra-embryonic membrane that surrounds the embryo and encases it in amniotic fluid.
Which animal lacks an amnion?
A) frog
B) lizard
C) pigeon
ADP is like a partially charged battery because it...?
The activity of the kidneys is controlled by hormones and by ?
The activity of the kidneys is controlled by hormones and by pituitary gland.
What is pituitary gland?Your pituitary gland (also known as hypophysis) is a small, pea-sized gland located at the base of your brain below your hypothalamus.
What are four functions of the pituitary gland?Through secretion of its hormones, the pituitary gland controls metabolism, growth, sexual maturation, urinary hormones ,reproduction, blood pressure and many other vital physical functions and processes.
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you can tell that this is an image of a dna nucleotide and not an rna nucleotide because you see a _____.
You can identify a DNA nucleotide by the presence of a deoxyribose sugar, instead of ribose, and the presence of the base thymine, instead of uracil like in RNA. The key components of a nucleotide are a nitrogenous base, a pentose sugar, and one or more phosphate groups. DNA and RNA differ in the type of pentose sugar and one of the bases they incorporate.
Explanation:You can tell that this is an image of a DNA nucleotide, and not an RNA nucleotide, because you see a deoxyribose sugar instead of ribose. Additionally, you can look to see if there is the base thymine present, which is in DNA, instead of uracil, which is in RNA.
Nucleotides are the building blocks of DNA and RNA. Each nucleotide comprises a nitrogenous base, a pentose sugar, and one or more phosphate groups. The carbon residues in the pentose are numbered 1' through 5' (with the prime distinguishing these residues from those in the base, which are numbered without applying a prime notation). The base is affixed to the 1' position of the ribose, and the phosphate to the 5' position. When a polynucleotide forms, like a DNA or RNA molecule, the 5' phosphate of the incoming nucleotide connects to the 3' hydroxyl group at the end of the growing chain.
The critical difference lies in the pentose sugar included in the nucleotide. DNA contains deoxyribose, which is similar in structure to ribose that is found in RNA. However, deoxyribose has an H instead of an OH at the 2' position.
Moreover, DNA nucleotides incorporate the four bases adenine (A), guanine (G), thymine (T), and cytosine (C). In contrast, RNA uses uracil (U) as a substitute for thymine (T). So, if you see a nucleotide with thymine, that is a direct indicator of DNA. By understanding the core differences between DNA and RNA nucleotides one can easily distinguish between them by examining a given image or model.
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Organisms that live in the tundra have developed unique adaptations that aid in their survival. Ursus maritimus has a variety of adaptations which enable it to survive in the tundra. It is the largest terrestrial carnivore, but it is also an excellent swimmer that spends much of its time in and near the water hunting its favorite food. It has large paws with small bumps to provide traction as it walks across the ice. Its fur is helpful as camouflage during the winter months, but not as helpful during the summer. Which organism has the adaptations described that enable it to survive in the tundra?
A. harp seal
B. arctic fox
C. polar bear
D. Kodiak bear
Which of the following best describes how the photosynthesis in grass cells is related to the cellular respiration in a cow's cells? ...?
A.)The carbon dioxide produced during the cow's cellular respiration is absorbed and used in the grass cells' photosynthesis to make ATP.
B.)The energy stored in the grass cells' glucose during photosynthesis is eaten and used by the cow's cells to make ATP during cellular respiration.
C.)The carbon dioxide produced by photosynthesis in the grass cells is breathed and used to make ATP in the cow's cells during cellular respiration.
D.)The ATP produced during photosynthesis in the grass cells is eaten by the cow and stored as glucose during cellular respiration.
Answer:
The correct answer would be option B .
Photosynthesis and cellular respiration are complementary in nature as they produce substrates for each other.
Photosynthesis is the process by which plants or photoautotrophs like green plants, grass et cetera make their food or glucose from simple compounds like carbon dioxide and water in presence of sunlight and chlorophyll.
The oxygen is released as the byproduct.
6 CO₂ + 6 H₂O + solar energy → C₆H₁₂O₆ + 6 O₂
In contrast, the animals or consumers such as cow use these products (glucose and oxygen) to produce energy in the form of ATP through the process of cellular respiration.
Carbon dioxide and water are released as the waste product of the process.
C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O + energy (ATP)
Which is a reason for the rise of nitrate levels in ground water?
outline how impulses are transmitted from receptor to effector ...?
A receptor is a stimuli receiver. It receives an information and sends it through a sensory neuron to the spinal cord, as a part of the central nervous system. So, the spinal cord sends information received from the body to the brain. Further brain sends the processed information back to the spinal cord which relays it out through a motor neuron to the effectors (muscles or glands).
Sunlight is a form of energy called _____.
Sunlight is a form of energy known as electromagnetic radiation or solar energy, and the portion that humans can see is termed visible light. It travels in waves, measurable by their wavelength.
Sunlight is a form of energy called electromagnetic radiation or solar energy. This solar energy is composed of tiny packets of energy known as photons. While the Sun radiates a vast amount of this energy, the part that humans can see is called visible light. Solar energy travels in waves, which can be measured in terms of their wavelength - the distance between two consecutive points like crest to crest or trough to trough.
The sun is the Earth's primary source of energy and it emits light and heat through a process called nuclear fusion, where hydrogen is converted into helium, releasing vast quantities of energy. This energy travels across space and reaches Earth mostly in the form of visible light, which we can harness and utilize as an energy resource.
What is the probability of an offspring inheriting to the recessive trait if its parents are both heterozygous?
what prefix would you add to lysis to mean separate or split using water?
To indicate the splitting or separation of a compound using water, the prefix 'hydro-' is added to 'lysis', forming the word 'hydrolysis'. This chemical reaction is crucial in breaking down polymers into their monomeric units.
The prefix you would add to lysis to mean separate or split using water is hydro-. The complete term is hydrolysis, which is a chemical process where water is used to split a substance into smaller molecules. In the context of polymers, hydrolysis plays an essential role by breaking the covalent bonds between monomers, splitting them into smaller units, often through the addition of a hydrogen ion (H+) to one monomer and a hydroxyl group (OH) to the other, effectively dismantling the polymer chain.
What is the net movement of molecules from high to low concentrations?
What is an allele?
A. A group of proteins
B. A type of virus
C. A group of chromosomes
D. A form of a gene
Photosynthetic algae create sugars that will eventually be broken down during which process?
1.glycolysis, during respiration
2.the Calvin cycle, during photosynthesis
3.electron transport chain, during respiration
4.the Krebs cycle, during photosynthesis
The correct answer is:
glycolysis, during respiration
Photosynthetic algae create sugars that eventually be broken down during : A. Glycolysis, during respiration
During this process, Algae produced 2 ATP and 2 NADH, which is used in forming energy.
Explanation:
The cleavage down of sugars is called glycolysis. The prefix glyco- means sugar, and the suffix -lysis means breaking down. It's part of a three-step method in respiration, the other two is The Krebs Cycle and Electron Transport Phosphorylation. In the manner of glycolysis, 2 ATP and 2 NADH are designed. Glycolysis is the metabolic pathway that transforms glucose C₆H₁₂O₆, into pyruvate, CH₃COCOO− + H⁺. The free energy released in this manner is used to form the high-energy molecules ATP and NADH.