Answer:
D. Ecological competition
Explanation:
The small population of finches reached the Galapagos island and established themselves. The geographical isolation of Galapagos islands from each other led to the prevention of interbreeding among the populations of finches present on the separate islands.
The different populations of finches accumulated variations to get adapted to the available food. Accumulation of genetic variations and geographical isolation led to their reproductive isolation from each other.
To get themselves better adapted to the surroundings, the population of finches experienced increased genetic differences between them, that is ecological competition. Repetition of the whole process of the chains of islands led to the evolution of different species of finches.
The instructions for making proteins come originally from
A) RNA.
B) ribosomes.
C) DNA.
D) amino acids.
Answer: C. DNA
Explanation:
DNA contains the genes that codify for all of the proteins in the body. DNA is translated into RNA, which exits the nuclei of the cell and enters the cytoplasm. In the cytoplasm RNA is transcripted into proteins by the ribosomes. Ribosomes can be found by themselves or on the endoplasmatic reticulum.
A nurse is caring for a 5-year-old boy with end-stage acquired immunodeficiency syndrome (aids). the child confides that he is ready to go to heaven and see his grandpa. the nurse knows that the child's parents aren't comfortable with the idea of discontinuing treatment. what should she do?
If a formation in the dna of an organism results in the replacement of an amino acid containing a polar r group with another amino acid containing a nonpolar r group how might the structure of the protein be affected? address the impact on all levels of the protein structure in your answer
What is the maximum amount of time allowed by the fda food code that time/temperature control foods can be kept in the temperature danger zone?
Final answer:
According to the FDA food code, foods should not be in the temperature danger zone (40°F to 140°F) for more than two hours to prevent rapid bacterial growth and foodborne illness.
Explanation:
The maximum amount of time allowed by the FDA food code that time/temperature control foods can be kept in the temperature danger zone is more than two hours. The temperature danger zone is defined as the range between 40°F and 140°F, wherein bacteria grow rapidly. Foods that remain within this range for more than two hours may become dangerous to eat due to rapid bacterial growth. Therefore, it is crucial to adhere to this guideline to prevent foodborne illness.
The nurse should suspect that a client who had a recent myocardial infarction is experiencing denial when the client:
Neurons found in the center of the spinal cord that receive information from the sensory neurons and send commands to the muscles through the motor neurons are called ________.
Which of these includes sugars, starches, and cellulose?
Polysaccharides, which include starch, glycogen, and cellulose, are complex carbohydrates important for energy storage in plants and animals (starch and glycogen) and providing structural support in plants (cellulose).
Explanation:The substances that include sugars, starches, and cellulose are known as polysaccharides, which are complex carbohydrates consisting of long chains of monosaccharide units. Cellulose is a kind of polysaccharide that forms an integral part of plant cell walls and is used in the production of materials like paper and cardboard. Starch is another type of polysaccharide that plants use to store energy, and it's commonly found in foods like potatoes. Glycogen, also a polysaccharide, serves as the main form of energy storage in animals and fungi.
These polysaccharides are critically important to both plant and animal life. Cellulose provides structural integrity to plant cells, thereby contributing to the rigidity of plants. Starch and glycogen function as energy reserves in plants and animals, respectively, and play vital roles in maintaining energy homeostasis. Although all composed of glucose molecules, starch, glycogen, and cellulose differ structurally, leading to their unique properties and uses in living organisms.
Plant cells _________ have organelles that conduct photosynthesis. Photosynthesis uses the energy from sunlight to create food for the plant
Answer:
The correct answer will be-photosynthetic organelle called chloroplast
Explanation:
The plants are known as the photoautotrophs as they utilize the sunlight to synthesize the food molecule called glucose. The process of synthesis is known as photosynthesis.
The photosynthesis reaction begins with the absorption of the sunlight from the sun using a special organelle called chloroplast. The chloroplast contains chlorophyll pigment in the photosystem molecules to capture the light energy at 700 nm and 680 nm.
Thus, -photosynthetic organelle called chloroplast is the correct answer.
A red-tailed hawk swoops down and captures a young rabbit feeding on dandelions growing in a park. the relationship between the hawk and the rabbit represents __________.
Which topical agents are used to clean highly colonized wounds? select all that apply?
The topical agents that are helpful in cleaning highly colonized wounds are the following; sodium hypochlorite, acetic acid and hydrogen peroxide. These topical agents are helpful in cleansing the wound and will likely help in healing the wound as it does not damage the tissues.
Consider the feedback loop that cools the body when it is too warm
Oxidized ldl in the blood is picked up by the ________. b100 receptor scavenger pathway b48 receptor no cell can pick up oxidized ldl
Low-Density Lipoproteins (LDL) is broken down to protein and free cholesterol. Used for maintaining cell membrane or synthesizing special compounds (estrogen, testosterone, vitamin). Oxidized LDL in the blood is picked up by the Scavenger pathway for Cholesterol Uptake. The WBC sense oxidized LDL, digest and overcome it which avoids it from re-entering the blood stream which able to pick up vast amounts of LDL.
Before a scientific theory is accepted and supported, it has A) been tested by only one scientist. B) been published in scientific journals. C) been tested many times by different scientists. D) been approved by the International Committee of Scientists.
Answer:
The correct answer will be option-C.
Explanation:
A scientific theory is a well-substantiated idea which explains any natural phenomenon in depth. The theory is the elaborate and explanatory form of a hypothesis which has to prove through experiments.
The theories are formed by the use of many earlier theories which explains the same natural issue like Theory of relativity by Einstein. Before the theory is accepted it must be supported by the experiments of the work of another scientist as well as earlier theories. It should be tested with other scientists working on the same issue.
Thus, Option-C is the correct answer.
What is the ability of a cell membrane to allow materials to pass through it called?
Which element is present in all amino acids, but not necessarily in fats or carbohydrates?
A. Carbon
B. Nitrogen
C. Oxygen
D. Hydrogen
A basic amino group (NH2), an acidic carboxyl group (COOH), and an organic R group (or side chain) that is specific to each amino acid make up an amino acid, an organic molecule. Therefore, option (B) nitrogen is correct.
What is amino acids ?Organic substances known as amino acids have both amino and carboxylic acid functional groups. Alpha-amino acids, which make up proteins, are by far the most significant of the hundreds of amino acids found in nature. In the genetic code, only 22 alpha amino acids are present.
Histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine are the necessary amino acids. Alanine, asparagine, aspartic acid, glutamic acid, and serine are the non-essential amino acids.
Carbohydrates and fats consists of carbon, hydrogen and oxygen. Therefore, Option (B) is correct. Nitrogen is present in all amino acids but not necessarily in fats or carbohydrates.
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Ige is involved in __________. a. phagocytosis b. allergy c. mucosal immunity d. microbe destruction
A upright sprinkler head is different from a pendant sprinkler head because
Answer:
The difference between preventive vertical fire sprinklers and pendant sprinklers is the position each of these sprinklers takes in the water line.
Explanation:
A vertical sprinkler is located on the pipe. Due to their configuration, vertical and pendant sprinklers are classified as distribution sprinklers. Both sprinklers use a design in which they spray water in an equal pattern from their positions. On the other hand, a vertical sprinkler has a water deflector on top that allows water to shoot upward. The pendant type hangs from a pipe, and its water baffle is placed at the bottom, but both sprinklers have the same circular pattern.
Using data from the table above, select the best explanation for why that cell will be able to eliminate waste most efficiently?\
What is life expectancy? question 4 options: 1) maximum life span that an individual of a given species could reach 2) number of individuals in a population that survive in a given year 3) number of years an individual of a certain age will probably live 4) probability that an individual will survive infancy 5) all of these are descriptions of life expectancy?
The maximum life span that an individual of a given species could reach is referred to as life expectancy. The correct option is 1.
What is most common life expectancy?Life expectancy is a measurable statistic of how long an organism is expected to live based on its birth year, current age, and other demographic factors.
The world's current life expectancy in 2016 was 72.0 years, 74.2 years for females, and 69.8 years for males, according to the World Health Organization (WHO).
Thus, the correct option is 1.
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What is the time signature with three quarter note beats per measure called?
Answer:
3/4 meter, Waltz Time
Explanation:
Time signature denotes the meter of the piece of music.
Three quarter note beats per measure has time signature 3/4.
3/4 meter is the second most popular meter. It is also called Waltz time. 1 chord per measure generally is the type of music. It is also one of the triple meters. Common triple meters used are 3/4, 3/2, 3/8, 9/8.
The number of kilocalories provided by a food that contains 30g of carbohydrate is
which statement applies to plants, animals, and bacteria in relation to glucose?
they all need glucose, A tree makes glucose using the suns energy, and a mouse(the animal) gets glucose by eating other living things. Its energy must be transferred to molecules of ATP.
Hope that helps you
What is an ion?
A.
a group of two or more atoms that acts like one atom
B.
a compound that contains two elements
C.
a particle in the nucleus of an atom that has no charge
D.
an atom or particle with a positive or negative charge
What is the difference between a longitudinal section and a cross section?
Answer: See Explanation
Explanation:
Cross sectional study is form a class of research methods that involve observation of all of a population, or a representative subset, at a defined time. Longitudinal study is a correlation research study that involves repeated observations of the same items over long periods of time — often many decades. It is a type of observational study.
What two or more tissues join together together for a specific function they form a/an ________________. examples include_____________________,_________________and_____________?
When two or more tissues join together for a specific function, they form an organ. Examples include the heart, liver, and lungs.
Explanation:When two or more tissues join together for a specific function, they form an organ. Examples include the heart, which is made up of cardiac muscle tissue, connective tissue, and nerve tissue; the liver, which is made up of various types of tissues including hepatocytes and blood vessels; and the lungs, which are made up of respiratory epithelium, smooth muscle, and connective tissue.
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When assessing orientation, the nurse completes the assessment by asking which questions? select all that apply. "can you tell me where you are?" "would you count from 1 to 10 backward, please?" "what is your name?" "what day of the week is it?" "what did you eat for breakfast today?" submit answer?
Questions like "can you tell me where you are?, what is your name? what day of the week is it?, and what did you eat for breakfast today?" should be included. They are all significant in determining a patient’s cognitive status.
Many enzymes in both prokaryotic and eukaryotic cells are compartmentalized within organelles.
a. True
b. False
What would be the impact on the nitrogen cycle if there were a decrease in decomposition in a given ecosystem?
A decrease in the decomposition rate in an ecosystem will impact the nitrogen cycle such that the amount of nitrogen available in the soil decreases.
The nitrogen cycleDecomposition of dead organic matters in ecosystems releases nitrogen into the soil in the form of ammonium compounds.
The more the decomposition activities in an ecosystem, the more the amount of nitrogenous compounds available in the soil.
Thus, a decreased decomposition rate in an ecosystem will reduce the amount of nitrogen available in the nitrogen cycle, specifically in the soil.
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The endocrine system responds to input from the nervous system, particularly from the ____.
Water is __________ when a nucleotide is added to the end of a dna strand.
Answer;
-Produced
Water is produced when a nucleotide is added to the end of a DNA strand.
Explanation;
Nucleotide is a monomer in nucleic acids, consisting of a five-carbon sugar covalently bonded to a nitrogenous base and (1-3) phosphate groups.
-The polymerization of nucleotides is a condensation reaction. condensation reaction is the chemical reaction in which two or more molecules combine to produce a simple molecule that happens in nucleic acid synthesis. (like hydrolysis but not water product). For a covalent bond to form between the nucleotide and DNA strand, an OH from the nucleotide and an H from the strand of DNA combine to form water.