Answer: Only 10 percent of energy in a light bulb is used to create light. ...
The amount of energy Americans use doubles every 20 years. ...
Explanation:
What does a Euglena require to exhibit phototactic behavior?
A.
a contractile vacuole
B.
cilia
C.
an eyespot
D.
a pseudopod
Answer:
C
Explanation:
Phototaxis (phototactic response) is the cellular behavior in which cells swim toward or away from the light source. The euglena have eyespots that detect light so that it can move toward sunlight for photosynthesis.
Euglena require an eyespot to exhibit phototactic behavior. Thus option C is correct.
what is phototaxis ?Phototaxis is defined as the movement of an organism in response to external stimulus that means light, it is a locomotory movement of living organisms towards the source of light or away from the source of light.
Taxis means the movement of an organism in response to a stimulus like light or food, it is an innate response of an organism to variation in light intensity and direction.
More is the intensity of light in a particular direction the more will be phototactic stimulation occurs in the organism, its own biological reason and phototactic response are incidental and serve no end purpose.
The advantages of phototaxis are the regulation photosynthesis, the finding of food in phototrophic organisms, facilitation of larval dispersal, or the increased likelihood of gamete fusion on the surface.
Thus option C is correct.
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HELP ASAP WILL GIVE BRAINLISET Which of the following describes the Cell Theory?
Group of answer choices
(A)All
(B)All living things are composed of one or more cells.
©Cells are the basic unit of life
(D)Cells are produced from existing cells
Answer:
C. Cells are the basic units of life.
Explanation:
PLSSSS HELLLPPP
I’ll give brainiest!!!
Darcy put three healthy plants in pots. She put them in three places. Each plant had good soil, air, and water. After three weeks,
Darcy checked on the plants.
Based on the results, where do you think Darcy put plant #2?
es )
A)
in the shed
B)
under a tree
)
on the back deck
D)
in the front yard
Fr
Answer:
A)in the shed
Explanation:
Just did the usa test prep
how can we control bacterial disease?
Answer:
Bacterial diseases are treated with antibiotics. Antibiotics work by killing the harmful bacteria or by stopping them from reproducing and spreading. Different types of antibiotics are effective for treating specific types of bacteria.
Explanation:
Answer:
by using antibiotics, antibiotics are harvested from fungi because they have a gene that kills the bacteria, i think it only works on bacterial infections, most of the antibiota said are used on animals and live stock.
Explanation:
Transcribe the DNA strand below to mRNA.
TTTACGACCTAAGCA
Answer:
AAAUGCUGGAUUCGU
Explanation:
Which distinguishes mitosis from meiosis?
A. Mitosis has one DNA replication, while meiosis has two DNA replications.
B. In mitosis, the nucleus divides once. In meiosis, the nucleus divides twice.
C. In mitosis, homologous chromosomes pair up. In meiosis, there is no pairing of chromosomes.
D. Mitosis results in the production of gametes, while meiosis results in the production of body cells.
Answer:
Your answer would be B.
Explanation:
In mitosis, the nucleus divides once. In meiosis, the nucleus divides twice.
Answer:
te ya uz dağ dfjjhtb5j6n5j
Which of these has a warming effect on Earth? O A. More evaporation of water due to warmer temperatures causes low, thick clouds to form. O B. More evaporation of water due to warmer temperatures increases water vapor, forming high, thin clouds. C. Earth's oceans absorb carbon dioxide from the atmosphere D. Rising carbon dioxide levels spur plant growth, causing increased carbon dioxide absorption.
Answer:
A
Explanation:
Thick clouds can trap lots of heat. This has a warming effect on earth.
Answer:
B.. More evaporation due to warmer temperatures increases water vapor, forming high, thin clouds
Explanation:
Thin clouds don't reflect as much sunlight as low, thick clouds do. Because of that more sunlight enters the atmosphere and increases global warming
is spirogyra a protist or thallophyta
Answer:
Protista
Explanation:
Kingdom: Protista and Division: Charophyta
Answer:
protista
Explanation:
it exists in haploid cells reproduced by binary fission
What caused the Kingdom of Life to change? Give 3 reasons minimum.
Answer:
Due evolution, discoveries and having both characteristics.
Explanation:
The Kingdom of Life change due to evolution in the body of organisms, discoveries of new organisms that are different from plants and animals. There are some organisms that have both plant and animal characteristics so it can't be placed in plant or animal kingdom so that's why the kingdom of life changes from two kingdom system to 5 kingdom system.
what is the relation between cell cycle disruption and cancer?
I need help!!!?
How did scientists begin to Mark divisions in the geologic time scale in response to a change they discovered in the geologic record
Answer:
Scientists began to mark division on the geologic time scale when patterns and similarities started emerging from archeological studies. Patterns such as the discovery of fossils that were formed within the same period.
Explanation:
Geologists who study matter that make up the Earth's crust (whether solid gaseous or liquid), as well as matter from other terrestrial planets and the processes that influence the formation and condition of this matter, are called geologists.
They have successfully calibrated history into various phases of time intervals. These intervals are event-based intervals. For example, you have Eons, Eras, and Periods.
An Eon is a billion years. An example is the Neoproterozoid Eon. Eons are made up of several Eras and Eras are made up of periods. An example of an era is the Mesozoic era. Whilst periods are smaller units of an era, eg. Triassic era.
As scientists deduced the causes for the formation of fossils and topographical remains/patterns, they collected events that occurred within the same time period and group them together.
This range of events became known as the geological time scale.
The age of fossils and rocks is also used to map out the calibrations on the scale.
The age of fossils and rocks is determined using the process of radioactive dating.
Cheers
What does the temporal lobe and Cerebellum do?
Answer:
The temporal lobes are also believed to play an important role in processing affect/emotions, language, and certain aspects of visual perception.
The cerebellum is busy planning, adjusting and executing movements of the body, the limbs and the eyes.
Explanation:
If you have done odesseyware please help
Air that comes in from the ocean during the day is usually _____.
1. cooler than the on land
2. warmer than the air on land
3. the same temperature as the air on land
4. drier than the air on land
answer iits warmer
Explanation:
2
bc the water absorbs the heat from the sun
Which feature do both roundworms and segmented worms have?
A They are usually microscopic.
B They lack a circulatory system.
C They have setae covering their bodies.
D They have a one-way digestive system.
Answer:
D
Explanation:
please help me put these words in the correct blanks
Answer:
In a transverse wave, a wavelength is the distance from one crest to the next crest or from one trough to the next trough. In a longitudinal wave, the wavelength is the distance from one compression to the next compression or from one rarefaction to the next rarefaction.
Explanation:
Context clues for the second, third, fifth, and sixth blanks; answer is at end of clause
First one was instinct, fourth was because it seemed to be a comparison
Hope this helps! Have a great day!
Are any change in the sequence of bases in DNA or RNA that can cause by mutagen or can happen spontaneously in the cell
Answer:
MUTATION
Explanation:
Mutation is a change or alteration in the genetic sequence of a DNA or RNA (nucleic acid) that are induced by a chemical substance called MUTAGEN or by a spontaneous occurrence. Mutation are of different types depending on how it occurs in the cell. A mutation can be deletion (removal), substitution (replacement), insertion (addition) etc.
Based on this question that states that "any change in the sequence of bases in DNA or RNA that can be caused by mutagen or can happen spontaneously in the cell", the process of MUTATION is being described.
Due to the size of the Universe and the number of galaxies and stars in it, scientists must devise indirect ways to study it. Which of these represents the best way for scientists to study the Universe?
Answer:
A. Scientists should create a graph showing a comparison of the relative sizes of all the galaxies and stars.
Explanation:
Due to the size of the universe and the number of galaxies and stars in it, scientists must use different methods for the purpose of the study, such as the analysis of cosmic microwave background radiation, gravitational lensing, etc.
What is the significance of the cosmology studies?Scientists can conduct cosmology research in a variety of ways, including using computer simulations to model and predict the evolution of the universe and all of its materials, using gravitational lensing to measure the distribution of dark matter, and so on. Apart from that, the universe can be studied by using telescopes at various wavelengths,
Hence, due to the size of the universe and the number of galaxies and stars in it, scientists must use different methods for the purpose of the study, such as the analysis of cosmic microwave background radiation, gravitational lensing, etc.
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HELP ME PLS
Only a few natural elements have a greater density than gold. They are: ??
15 POINTS AND BRAINLIEST FOR CORRECT ANSWERS!!!
Plutonium
Neptunium
osmium
let me know if it's correct or not, these were the only ones I could think of.
Few natural elements have a greater density than gold are plutonium, neptunium, and osmium.
What is an element?
An element is define as a type of substance that is impossible to break into smaller pieces by the help of chemical process. There are several rules that should be followed at the time of assinging name of the elements. The first rule is name of the element is not a proper noun. The second rule is the symbols of the element that must be of one or more than one symbol.
Density is define as the mass per unit volume it means that 1 kg mass present in 1 meter cube is called density, density is also states that the how compact an material.
Mathematically
Density = mass/volume
S.I unit of density is kg/m^3
Density is higher in solid as compare to liquid and density of liquid is higher than gas so density is in order of SOLID>LIQUID>GAS. So we know that solid is compact in nature as compare to liquid and gas.
Therefore, Few natural elements have a greater density than gold are plutonium, neptunium, and osmium.
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Phineas and Ferb build a flying machine. They accelerate into the air in a
straight line, going from 0 m/s to 30 m/s in 3 s. Find their average
acceleration.
10
30 dived by 3 = 10
hope it helps
When you by strawberry is "TEXTURE " matters? and why is that?
Answer:
Yes, it does.
Explanation:
If the strawberry you buy is all soggy and way too soft, it is likely rotten, while the normal texture we are used to shows that it is edible.
Answer:
Frozen strawberries were characterized organoleptically by a moist, soft and limp appearance, and poor shape retention. They felt very soft, moist, limp and slightly slimy in the mouth. Interior fibers had a tough texture.
Can someone please help. Thank you!!
What specifically makes up a protein.
Answer:
The building blocks of proteins are amino acids, which are small organic molecules that consist of an alpha central carbon atom linked to an amino group, a carboxyl group, a hydrogen atom, and a variable component called a side chain
Explanation:
:)
Explanation:
The building blocks of proteins are amino acids, which are small organic molecules that consist of an alpha (central) carbon atom linked to an amino group, a carboxyl group, a hydrogen atom, and a variable component called a side chain.
Which statement best explains why the classification
schemes of taxonomists have changed over time?
A. New technology like DNA sequencing allows scientist to have a more accurate genetic evolutionary history
B. New information about the genetics of species is being discovered.
C. Molecular biology has provided more detailed evidence for the relationships
between organisms.
D. All of the above
Answer:
D.
Explanation:
Sana tama kase feel ko pang
Classification of organisms is defined as dividing living beings into different kingdoms based on their genetics, traits, and other features.
Why did Classification Schemes of taxonomists change?Taxonomists arrange and divide the organisms based on the DNA, traits, and features of the living organisms. The advancements in technology led the taxonomists to have more information on genetic lineage and arrange them accordingly. Introduction and discoveries of new species, their genetic make-up, and traits also contribute to the change of classification system. Molecular biology, cellular level studies, and genetics of species have contributed to the classification of organisms.
Thus, the given statements about the classification of organisms are correct.
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Why is clay like a stem cell? *
a. Clay is made of particles just like a stem cell
b. Clay can be made into anything (like a cup or a figurine) just like a stem cell can become different types of cells
c. Clay is not at all like a stem cell
Answer:
B. Clay can be made into anything (like a cup or a figurine) just like a stem cell can become different types of cells
Explanation:
In guinea pigs, white coat color is determined by the allele W. Black coat color is controlled by the allele w. Cross a white & black spotted pig with a black pig.
W = white
w = black
What percentage of the offspring will be black?
Answer:
About 75%
Explanation:
About 75% will have two ww alleles, while the rest will have Ww alleles.
A student tested food samples for the presence of various nutrients and recorded her findings in
the data table below. A"+" denotes that the nutrient was present in the sample. Adenotes that
the nutrient was absent. Use the student's data to answer the next 3 questions.
Nutrient
Glucose
Starch
Protein
Lipid
Sample 1
Sample 2
Sample 3
Sample 4
Based on the student's data, which food sample(s) would contain amino acids?
O sample 3
O Samples 1 and 4
O sample 2
O samples 2 and 3
Answer:
4mhky4stjs reste w test
Explanation:
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Question 1
Which of the following can convert nitrogen in the air into a form plants can use?
A
bacteria
B
fungi
C
animals
D
protists
Bacteria can convert nitrogen in the air into a form plants can use.
The earth atmosphere contain a huge amount of oxygen which is needed by plants. These Nitrogen can be converted into a form in which can be used by plants through a process known as nitrogen fixation.
Fixation is a process that converts nitrogen in the atmosphere into forms in which plants can use. Nitrogen can be fixed using fertilizer.
Also, bacteria can fix nitrogen into the soil naturally.
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Explain the mechanism of ventilation in human lungs (you should talk about the diaphragm, abdominal muscles and rib cage and intercostal muscles)
Answer: When the diaphragm contracts, it moves inferiorly toward the abdominal cavity, creating a larger thoracic cavity and more space for the lungs. Contraction of the external intercostal muscles moves the ribs upward and outward, causing the rib cage to expand, which increases the volume of the thoracic cavity.
The movement of diaphragm and ribs govern the mechanism of ventilation in human lungs.
The ventilation in human lungs or pulmonary ventilation is defined as the process of intake of air during inhalation, and expiration as the release out of air. It is also termed as breathing.
What is the mechanism of pulmonary ventilation?The lungs are present in the thoracic cavity, with the diaphragm below the lungs separating the thoracic cavity from the abdominal cavity. The rib cage is present outside lungs and prevent them.
Inhalation process in pulmonary ventilationThe inhalation is the process of taking in air. The increase in the volume of lungs results in the increased movement of diaphragm to the abdominal cavity.
The intercostal muscles move upwards and the rib cage move outwards. Thus, the air is inhaled in the system.
Exhalation process in pulmonary ventilationThe exhalation of air is performed antagonist to the inhalation. The relaxation of diaphragm and the movement of rib cage results in the decreased volume of the lungs, and the air is expelled.
Thus, the movement of diaphragm and ribs govern the mechanism of ventilation in human lungs.
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Anyone know what is the answer pls ?
Answer:
1. Viruses 2. ? 3. Viruses 4. ? 5. Immunity 6. Vaccine
Explanation:
how does the coconut plant adapt in goa
Goa's climate is tropical, hot all year round, with a long and sunny season, which runs roughly from mid-October to mid-May, and a rainy season due to the south-west monsoon, more or less from late May to early or mid-October, and characterized by stuffy weather, cloud cover and frequent rains, which occur almost daily .
The coconut seed is especially well adapted to increasing its range by the method of ocean dispersal. The seed floats when its outer layers dry out. The buoyant coconuts drift on ocean currents and end up on tropical beaches where they germinate and take root.
Coconut tree grows only in the tropical climate. This plant live on the sandy soil, requires a lot of sunlight and regular rainfalls. Coconut tree does not tolerate low temperatures and low percent of humidity.
so goa is one place which is suitable for growing coconut.
Hope you've understood ☺️
Regan is trying to determine if an unknown element is a metal. She does not want to damage or change the physical appearance of the element in any way. Design an experiment that could determine if the mystery element is a metal without changing its appearance.
Explanation:
Well, one could use a magnet to see if it's ferrous. One could melt it to check which type it is, use a metal detector, or just use their senses: If it dings or clinks like metal, and feels like it’s texture. If it polishes with metal polish, is reflective, can be shaped or shape when heated… It usually is a metal. If it rusts, or oxidizes, it is or contains metal. If it “smells" like metal, most likely, it is metal. Finally, if it walks like metal, and quacks like metal, most likely we have a metal
