Explain the difference between asexual and sexual reproduction
Answer:
Asexual reproduction is when a living thing reproduces with only a single parent. Sexual reproduction involves two parents and chromosome change.
Explanation:
Ex of Asexual reproduction: Ferns, bacteria, animals, etc.
Ex of Sexual reproduction: Animals, some plants, etc.
In a dichotomous classification system, __________.
a) a population is repeatedly divided into two parts until a description identifies a single member
b) A population first divided into two parts, then three parts, and then four parts, until a description identifies a single member.
c) dichotomous keys are called natural keys
d) A population is repeatedly divided into three parts until a description identifies a single member.
e) A population is repeatedly divided into four parts until a description identifies a single member.
b) A population first divided into two parts, then three parts, and then four parts, until a description identifies a single member.
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(a)
2.
The diagrams below show the patterns produced on an oscilloscope by three
different sound waves.
M
А
B
с
(0)
Which two waves have the same loudness?
Write the letters.
and
In the diagram attached, the option that shows the two waves have the same loudness is option A and C.
What is the statement about?Note that in the diagram The letters may be in either order and both the letter and the correct explanation are need for the marking of the their amplitudes as they are the same.
Therefore, In the diagram attached, the option that shows the two waves have the same loudness is option A and C.
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(1) Response to stimuli: Does the entity sense and respond to environmental change?
They just can reproduce when they are in the host
Answer:
Organisms need to detect and respond to changes in their internal and external environment. This is because the conditions inside our body must be carefully controlled for it to function effectively and survive. The control systems that allow organisms to respond to changes are incredibly important.
All control systems include:
Cells called receptors, which detect stimuli (changes in the environment).
The coordination centre, such as the brain, spinal cord or pancreas, which receives and processes information from receptors around the body.
Effectors which bring about responses, and restore optimum levels, such as core body temperature and blood glucose levels. Effectors include muscles and glands, and so responses can include muscle contractions or hormone release
Which of the following is true of a scientific theory
Answer:
please put the papers snapshot
Arrange the rock layers from oldest to youngest re-examine The rock outcrops if you need to. Record the order in the student guide.
Basalt
Limestone with unknown fossil
Sandstone with trilobite
Shale with ammonite
Answer:
Youngest to Oldest
Shale with ammonite
Limestone with unknown fossil
Basalt
Sandstone with trilobite
What is a flock of ravens called ?
Answer:
an unkindness or conspiracy of Ravens
In the following scenarios, identify the independent variable, and the dependent variable.
1. Endurance in high altitude mountain climbers with and without the use of supplemental O2.
a. Independent Variable:
b. Dependent Variable:
2. Weight loss in subjects eating low carbohydrate diets.
a. Independent Variable:
b. Dependent Variable:
3. The number of hours spent studying biology each week and grades earned on biology exams.
a. Independent Variable:
b. Dependent Variable:
Suggest a control group for each of the following experiments.
4. Cancer rates in students who smoke cigarettes are closely monitored over a 5-year period.
Control Group:
5. Weightlifters are given 400 mg of creatine phosphate every day for 90 days. At the end of the 90-day period each participant is evaluated for improvements in strength.
Control Group:
The independent variable produces an effect on the dependent variable, while the control variable produce no change on the results. In the exposed situations, the independent variables are supplemental O₂, low carbohydrate diets, hours spent studying biology. The dependent variables are Endurance of climbers, Weight loss, grades earned on exams. And the control variable might be time.
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During an experiment, you need to consider all the variables involved.
Independent (manipulated) variable: Refers to all the variables in an experiment that provoke a response in another variable. An independent variable is the one that changes or is controlled and modified to analyze how another variable responds to it. The researcher changes the independent variable to observe its effects on the dependent variable. Usually, the independent variable is represented by the X letter. Dependent variable: Refers to the variable, which response depends on any change in the independent variable. It represents a quantity of something which value depends on how the independent variable is modified. The change in the dependent variable might be proportional or inversely proportional to the change in the manipulated variable. It is usually identified by the letter Y. Controlled variables are kept constant in the control groups and the experimental groups. Unlike the independent variable, the controlled variables do not influence the results. These variables do not affect the response of the dependent variable.
1. Endurance in high altitude mountain climbers with and without the use of supplemental O2.
a. Independent Variable: supplemental O2
b. Dependent Variable: Endurance in mountain climbers
The endurance of climbers will depend on the use of supplemental O₂. If they use supplemental oxygen, they will have more resistance than if they do not use it. Supplemental Oxygen is influencing the climbers´ endurance.
2. Weight loss in subjects eating low carbohydrate diets.
a. Independent Variable: low carbohydrate diets
b. Dependent Variable: Weight loss
Having a low carbohydrate diet will lead the subjects to lose weight. Any change in the quantity of the carbohydrate will affect the individuals' weight.
3. The number of hours spent studying biology each week and grades earned on biology exams.
a. Independent Variable: hours spent studying biology
b. Dependent Variable: grades earned on exams
The more hours students spend studying, the higher grades they get on biology exams. The grades depend on the number of hours used to study and are proportional to this variable.
4. Cancer rates in students who smoke cigarettes are closely monitored over a 5-year period.
Control Group: Time → Five years
Time is constant in all the study groups. Independently of the number of cigarettes smoked, or the frequency in which subjects smoke, all the groups will be analyzed for 5 years, and this time-lapse is constant.
5.Weightlifters are given 400 mg of creatine phosphate every day for 90 days. At the end of the 90-day period each participant is evaluated for improvements in strength.
Control Group: Time → 90 days
Time is constant in all the study groups. Independently of the creatine phosphate mg provided to weightlifters, individuals will be analyzed for 90 days, and this time-lapse is constant.
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oque é radiação eletromagnética
Answer:
A radiação que é emitida a partir de uma eleição movendo-se em alta velocidade, essas radiações não podem ser atraídas pelo campo elétrico nem pelo campo magnético
Explanation:
Hope you understand...Hi! help here thanks
Answer:
Observations are things that can be directly seen and talked about. Inferences are things that you believe correlate with each other. For instance, the dog wagging its tail must be happy because it is a guess, not a fact. An example of an observation is The girl is wearing a blue shirt with white straps because you can directly see it.
What are the conditions for osmosis to occur in animal cells?
1. Is it advisable to switch the microscope on while looking through the eyepiece?
Answer:
yes ithink its important to switch on
A Congressional Budget Office (CBO) estimate put the bill's cost at $182 million over five years when the bill was first introduced in 2016. The policy of the U.S government includes strong support for research into and preparedness for the effects of space weather. Does the government's policy match its actions? Does it match the seriousness of the situation? What are the consequences?
During the Obama Administration, a significant step was taken by the administration in order to prepare critical technology and infrastructure in order to curtail the risk of the space weather.
Space weather simply means the effects that emissions from the sun, have on the space environment. Space weather can have a negative impact on the infrastructures that are essential to the economy like water supply, electrical power, transportation, health care, etc.Space weather is a concern now due to the fact that the modern technology depends on signals and these are vulnerable and can be affected by space weather. The Executive Order was put in place to help in the reduction of economic loss and saving of lives of the people. The policy of the government matches it actions. In order to support the space weather research, it should be noted that National Aeronautics and Space Administration[NASA] keeps an eye and observes the space environment often by using solar observatories and studying the solar atmosphere, magnetic fields etc. and other bodies that surround the Earth.Read related link on:
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11. (a) Define the following terms (i) Spermatogenesis (ii) Oogenesis
Answer:
A. answer
Spermatogenesis is a process farming of spermatoza from germ cell(spermatogonium/spermatogonial) that happened in seminiferous tubules of the testis.
B. answer
oogenesis is the formation of ovum or eggs,starts in the ovaries of the foetus before birth.
Compare types of models. Which model of the human digestive system is most detailed?
A. Photograph of digestive system
B. Dissected pig
C. Artist drawing
D. 2D computer-generated model
The model of the Human digestive system that is most detailed is ( B ) : Dissected Pig
Pigs and Human have similar internal organs and the locations of each organ in both mammals are similar as well, therefore from the options the closest model that is most detailed as regards to the Human digestive system is a dissected pig.
A photograph of the digestive system does not provide a detailed model, also an artist drawing cannot provide as much detail as needed. A 2d computer-generated model will only present the digestive system in 2 dimensions hence it is not detailed enough as well.
Hence the most detailed model is a Dissected pig model.
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Meaning of chromatos
A. color writing
B. Color forming
C. Color spreading
D. None of these
chromato meaning
Chromato- is a combining form used like a prefix meaning “color.” It is used in many scientific and medical terms. In cell biology, chromato- specifically refers to chromatin, “the readily stainable substance of a cell nucleus, consisting of DNA, RNA, and various proteins, that forms chromosomes during cell division.”
What are some ways of reducing the effects of global warming
What describes how a large host cell and ingested bacteria could easily become dependent On one another for survival resulting in a permanent relationship
Answer:
The endosymbiotic theory describes how a large host cell and ingested bacteria could easily become dependent on one another for survival
Explanation:
What are the total number of subatomic particles found in the electron cloud of an Aluminum atom?
Answer:
13 electrons pls pls mark me branilest
Other kinds of white blood cell have a different way of killing
pathogens.Explain how they do this.
Answer:
White blood cells defend against pathogens in three ways. Firstly they release anti-toxins, which neutralize the effect of toxins produced by bacteria. The second way they destroy pathogens is by engulfing/ingesting them.
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Please select the correct answer
Answer:
2nd option is correct..Which of the following is true about science and technology?
A.
Advancements in science cannot lead to advancements in technology, and technological advancements cannot lead to scientific advancements.
B.
Advancements in science can lead to advancements in technology, and technological advancements can also lead to scientific advancements.
C.
Advancements in science can lead to advancements in technology, but technological advancements cannot lead to scientific advancements.
D.
Advancements in science cannot lead to advancements in technology, but technological advancements can lead to scientific advancements.
The flow of genetic information in molecular biology follows the following path, A) DNA is translated into protein B) DNA is transcribed into RNA which is translated into protein C) DNA is translated into RNA which is transcribed into protein D) RNA is transcribed into protein
Answer:
The Correct answer is DNA is transcribed into RNA which is translated into protein
Explanation:
The genetic information is unidirectional, from DNA to proteins. First, DNA is transcribed into an intermediary RNA molecule is known as transcription (TC), a further messenger RNA molecule (mRNA) is translated into a corresponding sequence of amino acids (translation). This concept of information flow is known as the central dogma of molecular biology.
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What does a J-shaped curve demonstrate for population growth?
Answer:
the situation in which, in a new environment, the population density of an organism increases rapidly in an exponential (logarithmic) form, but then stops abruptly as environmental resistance
Explanation:
Which phrase describes air pressure?
decreases with denser air
decreases as altitude decreases
equals mass divided by volume
decreases as a result of fewer air particles pushing down
The phrase which best describes air pressure is: decreases as a result of fewer air particles pushing down.
What is pressure?Pressure can be defined as a measure of the force exerted per unit area of an object or physical body. Thus, it is usually measured in Newton per meter square and calculated by using this formula:
[tex]P = \frac{F}{A}[/tex]
Where:
P is the pressure.F is the force.A is the area.The types of pressure.In Science, there are different types of pressure and these include the following:
Hydrostatic pressureOsmotic pressure Filtration pressureAtmospheric (air) pressureIn conclusion, air pressure is also referred to as atmospheric pressure and it generally decreases due to fewer air particles pushing down on the surface of planet Earth.
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What happens to your pupil in dim light and in bright light? Why does this happen?
I'll give brainliest :D
Answer:
your eyes adjust to the light sorce
Explanation:
correctly identifies at least one item that produces each of the five percussive tones (resonance, hyperresonance, dullness, flatness, and tympany
medsim respiratory system
Answer:
• pulmonary resonance: lungs are 99% air
• percussion notes:
Resonance : low, hollow, lasts , long
Hyperrsensonance: higher, booming, lasts long
Flatness: or Dullness : soft short
Tympany: high, drum-like
Explanation:
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According to endosymbiosis, what is the best explanation about how eukaryotic cells evolved?
Bacteria that were capable of photosynthesis engulfed smaller, heterotrophic bacteria.
Cells that did not fully separate during cellular division fused, forming larger organisms.
Chloroplasts and mitochondria were once prokaryotes that began to live within larger cells.
Two or more prokaryotes fused to form larger, multicellular organisms.
Answer: C
Explanation:
Most living organisms are composed of whitch group of elements
Answer: In all living systems we can always find 4 basic elements: carbon, oxygen, nitrogen and hydrogen. Carbon is the basic building unit contained in living matter. The percentage of carbon in the mass of living matter is 19.4 %. Oxygen and hydrogen are present in almost all organic compounds which create living organisms.
Explanation:
100 points plus brainly!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Starch, glycogen, and cellulose are all made of chains of
