With the exception of echinoderms, invertebrates are _____; chordates, echinoderms, and vertebrates are _____. soft-bodied; hard-bodied acoelomates; coelomates protostomes; deuterostomes radially symmetrical; bilaterally symmetrical
In a 10 m2 ecosystem, there are 20 raccoons. The population density of raccoons is _____. 2 per m2 4 per m2 10 per m2 20 per m2
Answer:
The correct answer is option A, [tex]2\frac{Racoons}{m^2}\\[/tex]
Explanation:
The Population density of any species in an ecosystem is equal to the number of that species living in one unit of area.
Therefore, population density can be represented as
[tex]\frac{Total population }{Total area of habitat} \\[/tex]
Substituting the given values in above equation, we get -
[tex]= \frac{20}{10} \frac{Racoons}{m^2}\\= 2 \frac{Racoons}{m^2}\\[/tex]
This is a True or False series of bio questions.
In the scientific method, the hypothesis phase is where one or more falsifiable explanations for the observation are developed. t/f
The positively charged DNA molecules flow to the negatively charged poles in the electrophoresis chamber. t/f
A map of restriction enzymes can be generated by cutting DNA with different combinations of restriction enzymes. t/f
In the scientific method, the observation phase is defining the problem you wish to explain. t/f
The purpose of ethidium bromide is to bind to the DNA double helix and to glow when exposed to ultraviolet light to tell the scientist where the DNA fragments end up. t/f
Describe glycolysis in terms of energy input, energy output, and net gain of atp.
Glycolysis is a cellular process that converts glucose into pyruvate, resulting in a net gain of 2 ATP and the production of 2 NADH molecules. The process starts with an energy investment of 2 ATP and concludes with the generation of 4 ATP, hence the net gain. This ancient and universal pathway does not depend on oxygen, allowing it to function under various conditions.
Explanation:Glycolysis Overview
Glycolysis is a series of biochemical reactions that breaks down glucose into pyruvate, producing ATP (adenosine triphosphate) and NADH (nicotinamide adenine dinucleotide) in the process. It begins with an energy input phase where 2 ATP molecules are used to convert glucose into a form that can be split into two three-carbon molecules. This is followed by the energy output phase, which results in the production of 4 ATP and 2 NADH molecules. The net gain of ATP during glycolysis is 2, as the initial investment of 2 ATP results in a total of 4 ATP, thus making a net gain of 2 ATP molecules.
Why is Glycolysis Important?
Glycolysis is a universal and ancient metabolic pathway, indicating that it was present in the earliest forms of life and is conserved across all domains of life today. This pathway is not oxygen dependent, which means it can occur both in the presence and absence of oxygen, making it adaptable to a variety of cellular conditions.
A scientist that is determining taxon based on genetic similarities is relying on
Relying on Morphology.
How is the growth of land plants proof that there is carbon in the atmosphere? How does carbon exist in the atmosphere, biosphere, and geosphere all at the same time?
Answer: 1 The growth of plants shows that there is a pressence of carbon in the atmosphere. The plants take carbon dioxide and sunlight from the atmosphere for the process of photosynthesis, this provides food to the plants. This food helps in growth and development of the plants and this proves that .
Answer: 2 The carbon exists mainly in the form of carbon dioxide in atmosphere, organic matter in the biosphere and coal, graphite, diamond in geosphere.
Discuss the relationship between autotrophs and heterotrophs. Do heterotrophs depend on autotrophs for the survival?
A 30-year-old patient undergoes a dental procedure, which results in abnormally prolonged bleeding. the presence of which other symptoms would lead a physician to diagnose her with von willebrand disease? select all that apply.
a. True
b. False: greenhouse gases emit longwave radiation and some of this radiation is directed towards the surface of the earth. question 2 options:
a.true
b.false
Answer:
TRUE !
Explanation:
Which of the following do meteorologists not typically use weather balloons to record? A atmospheric pressure b cloud types c humidity d temperature
Your answer will be B.) cloud Types
100% correct
:)
Answer:
cloud types
Explanation:
why you need to know cloud types
_____ 8. destroy pathogens on the outer body surface, at body openings, and on inner body linings
The diagram shows one process during sexual reproduction. After fertilization, the zygote contains 28 chromosomes. What is the number of chromosomes (n) present in the gametes?
A) 7
B) 14
C) 28
D) 56
Answer:
The correct answer would be B) 14.
In sexual reproduction, gametes are haploid cells formed after meiotic division of germ cells.
Meiosis is a cell division which results in the formation of four daughter cells from a single parent or germ cell. Each daughter cell contains half the number of chromosome present in the parent cell.
The haploid gametes fuse to form diploid zygote that is, the fertilization restored the diploid chromosomal number.
Now, the number of chromosomes in the zygote is 28. Thus, the number of chromosomes in gametes must be half of 28 that is, 14.
A young infant may believe that a bird is more like an airplane than an animal if the infant uses:
A young infant may see a bird like an airplane if the infant uses:
“Perceptual categorization”
Perceptual categorization is when something is directly categorized to be a part of a group when similar characteristics are observed. So in this case since the bird was flying, then the infant automatically recognizes it as a plane.
Name the thin tissue that holds the organs in place in the body cavity
The ________ surrounds the third ventricle and its two most important structures are the _______.
Covered by the two cerebral hemispheres, the diencephalon is the structure of the central nervous system that surrounds the third ventricle. It is composed of several other structures. The most important of them are the Thalamus, which plays a very important role in movements and emotions; and the Hypothalamus, which provides functions including thermoregulation, appetite and regulation of the sleep-wake cycle.
There is only room for one more person in the backseat of the car _____ my aunty is too fat.
If an individual is a carrier of an infectious disease, he is __________. if an individual is a carrier of an infectious disease, he is __________. both symptomatic and noninfective infective both asymptomatic and infective asymptomatic
An individual who is a carrier of an infectious disease is both asymptomatic and infective. This means they do not show symptoms, but can still transfer the disease to others, often via direct or indirect transmission mechanisms. Thus, carriers play a significant role in the propagation of infectious diseases.
Explanation:If an individual is a carrier of an infectious disease, he is both asymptomatic and infective. This means that while they do not show any symptoms of the disease, they can still transmit the disease to others. A good example is the herpes simplex virus, which may not present any noticeable signs or symptoms in most infected individuals.
Disease spreading in this way is referred to as a propagated spread, essentially progressing from person to person through a population of susceptible individuals. This can happen directly, with close person-to-person contact, or indirectly, via contaminated objects or surfaces, airborne inhalation of droplets or aerosols, or even through a vector such as an insect. Despite being asymptomatic, a carrier can have a major role in the spread of infectious diseases.
While a 'carrier' can also refer to an individual who can transmit a recessive genetic disorder to offspring without showing any symptoms, in the context of an infectious disease, a carrier is an infected individual who can transmit the contagious pathogen to others, whether or not symptoms are currently present.
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In which stage of the cell cycle was the nucleus with 6 picograms of dna?
Which state of matter does this model represent? Image of particles spread out, filling a container with space between them Solid Liquid Gas Plasma
Matter can be made to change between each of the four fundamental states by the addition or removal of energy
The correct option for the state of matter represented by the model; Gas
Question: Please find attached the model to be included as part of the question
The different states of matter are; Solid, liquid, gas, and plasma
Solids state: When matter is in the soli state the particles are packed closely together, forming a rigid structure, in which the molecules posses the lowest amount of energy compared to the other states of matter
Liquid state: Matter in the liquid state is in the intermediate state between the solid and gaseous states. Matter in the liquid state are free to move from place to place within the liquid , and they take the shape of the container in which it is placed
Gaseous state: In the gaseous state, the particles of matter has the most energy compared to the other three states. and the particles can move freely within the containing vessel to fill the vessel in which the gas is placed
Therefore, the model with the image of particles that spread out, filling the container with space between them represents matter in the gaseous state, and the correct option is gas
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In general, which factor is NOT critical when beginning an exercise program? A. using appropriate protective equipment during exercise B. finding friends who like to exercise the same way you do C. seeing your doctor for a physical assessment prior to beginning exercise D. choosing clothing that is designed to match your exercise program Please select the best answer from the choices provided. A B C D
The correct answer is option B. finding friends who like to exercise the same way you do
In the beginning of the exercise program, it is advised to were appropriate clothing as well as use protective equipment, so that the person is not injured and can do the exercise comfortably. It is also advised to go for a physical assessment before starting exercise, so that, any ailment cannot harm the person during exercise. But, finding friends, who are interested in same type of exercise is completely optional. It is better if you find friends, but it is not at all necessary.
Answer:
B
Explanation:
Which functional group is present in amine compounds?
A. COOH group
B. OH group
C. NH2 group
Final answer:
The functional group present in amine compounds is the NH2 group or amine group, which is the characterizing feature of an amine. The correct answer from the options provided is C.
Explanation:
The functional group present in amine compounds is the NH2 group. An amine is derived from ammonia, where one or more hydrogen atoms are replaced by hydrocarbon groups. In the context of amino acids, each molecule contains both an amine group (-NH2) and a carboxyl group (-COOH). While the amine group is a basic functional group with the formula -NH2, the carboxyl group is acidic and characterized by a carbon-oxygen bond and an OH group attached to the same carbon atom. In physiological conditions, the amine exists as an ammonium ion after gaining a proton, forming -NH3+ and the carboxyl group loses its proton to become a carboxylate ion -COO-.
Where is the energy from the light reactions used?
Which of the following statements is true about catalysts? (1 point)
A. Catalysts slow down the rate of chemical reactions.
B. All catalysts are enzymes
C. Catalysts are used up during a chemical reaction.
D. Catalysts lower the activation energy of a chemical reaction.
Answer:
The correct answer is: C. Catalysts are used up during a chemical reaction.
Explanation:
Catalysts are substances used in chemical reactions to speed them up. Many of our bodily functions require the use of catalysts to function at the rate we need them. The catalyst is not consumed during the reaction - because of this, catalysts can be re-used.
Catalysis is possible thanks to the presence of catalysts. Catalysts provide alternate pathways with the lower activation energy for the chemical reactions. Activation energy refers to the energy required for a reaction to happen. When there are no catalysts around, the activation energy is much higher, and thus the reaction is harder to achieve.
Catalysts in the body are called enzymes. Outside our bodies, there are also many catalysts, like heterogeneous catalysts, homogeneous catalysts, and photocatalysts.
In emphasizing that genetic influences on behavior depend on a personʼs home environment, psychologists are highlighting the importance of:
A hole is made in an opaque sheet of paper. A monochromatic variety of light is shot at the paper from one side. On the opposite side of the paper, the effects of diffraction will be greatest when the light has a _______ and the hole is _______. A. long wavelength; small B. high frequency; small C. low frequency; large D. short wavelength; large
Answer:
THANK ME its B on usa testprep
Explanation:
A. long wavelength; small
Diffraction is the greatest whenever the gap where the wave is passing through is smaller. This gap property will make the wave to "curve" reaching a more wider area, the smallest the gap is, more the wave will curve, spreading more widely. The light would propagate more rather then being concentrated on one focus. The wavelength is also something that affects diffraction. Whenever the wavelength is longer, the wave will have more time to spread sideways after diffraction.
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How can elevated tsh be involved in hypothyroidism?
What adaptions give flowering plants a reproductive advantage over gymnosperms?
____________________ is a form of conservation biology that focuses on habitats that are located where people live, work, or play.
A 22-year-old female has a low level of tsh. what condition does the nurse expect the patient is experiencing?
A human with the karyotype 49, xxxyy forms _______ barr bodies.