Answer:
The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. ... The nucleus is only one of many membrane-bound organelles in eukaryotes. Prokaryotes, on the other hand, have no membrane-bound organelles.
Hope this helps!
Petra finds a discolored stain on the carpet at a suspected crime scene. What two presumptive tests might she use to determine if the stain is blood? First, Petra sprays the discolored area with , which returns a glowing blue color. However, she knows that this chemical might also turn blue with other substances that contain iron. Subsequently, she uses , which turns pink, indicating the presence of hemoglobin.
Answer:
First, Petra sprays the discolored area with
Fluorescein
, which returns a glowing blue color. However, she knows that this chemical might also turn blue with other substances that contain iron. Subsequently, she uses
Phenolphthalein
, which turns pink, indicating the presence of hemoglobin.
Answer:
a. luminol b. phenolphthalein
Explanation:
looked it up, luminol turns green and the other one turns pink
Name and organism that can reproduce both sexually and axesually
Answer:
Aphids, slime molds, sea anemones
Explanation:
hope this helps:)))))
Give two factors that keep most populations in creation from experiencing a population explosion
Explanation:
what is the name of this website
or the book?
Once anything passes through the event horizon, from the perspective of that
object, nothing would change.
True or false
Answer:
True
Explanation:
The event horizon of a black hole is where gravity is such that not even light can escape. This is also the point I understand that according to Einstein time dilation will be infinite for a far-away-observer.
The statement "once anything passes through the event horizon, from the perspective of that object, nothing would change" is true.
What is horizon?The horizon would be the line that appears to divide a celestial body's ground from its own sky when observed by an observer standing on or close to the body's surface.
What is event?An event would be the collection of results from an experiment.
Therefore, the statement "once anything passes through the event horizon, from the perspective of that object, nothing would change" is true.
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After eating a sugary snack, a person's blood sugar
level may rise for a short period of time. Which
statement describes the body's way of restoring
homeostasis?
A. The brain will stimulate the body to sweat
in order to increase blood sugar levels.
O B. The brain will stimulate the cells to produce
more sugar, increasing blood sugar levels.
C. The brain will stimulate the cells to
maintain the elevated blood sugar levels.
O D. The brain will stimulate the release of a
chemical that will lower blood sugar levels.
At which level of organization would a scientist need to look to see a single structure made from similar tissues?
Organ.
Cell.
Organ system.
Molecule.
Answer:
The cell.
Explanation:
A structure consisting of comparable tissues constitutes an organ at the level of organization. So, the correct option is A.
What is Level of organization?The term "levels of organization" describes the various biological complexity levels or hierarchies at which living things can be researched and understood. These levels are organized hierarchically, with each level one on top of the one before it, and they include:
Organelles - Organelles are specialized structures within cells that perform specific functions.
Cells - Cells are the basic unit of life, and they are made up of organelles and macromolecules.
Tissue - Tissues are groups of similar cells that work together to perform a specific function.
Organs are collections of many tissues that cooperate to perform a certain function.
Organ systems - Organ systems are collections of organs that cooperate to accomplish a specific function.
So, the correct option is A.
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A species that lacks adaptation to a changing environment is more likely
to
Answer:
become extinct over time......
Identical rock types, identical fossils, and very similar mountain ranges are found on different continents that are
separated by a wide ocean. Which of these best explains these observations?
A Organisms traveled between these continents on land bridges.
B The same forces erode mountains in different locations.
These continents were joined together at one time in the past.
Some rock types are very common and are found everywhere.
Answer:
These continents were joined together at one time in the past
Explanation:
i think
Answer:
download home work app you will get answer from their
Photosynthesis Puzzle #3
Puzzle 4
Why are these images grouped together?
They must have something in common.
Answer:
They all have cholorophyll
Explanation:
Or we can say they carry out photodynthesis and make food.
See, all the pictures are green, this green pigment (colour ) is cholorophyll.
The first, second and fourth are pictures of leaves [which makes food] and the third picture is a illustration of the mitochondria.
Hope it helps!
Answer:
what's common between them is the colour green which is caused by chlorophyll
Explanation:
chlorophyll are green pigments in a leaf which facilitates sun light absorption for the leaf .Even the a structure is shown the picture
Which option describes a mass extinction?
А.
a large meteorite hits the Earth; many species rapidly disappear from the fossil record
B. the amount of sunlight on Earth Increases; organisms of a single species increase in number
C. glaciers cover the Earth; many species rapidly increase in number and take over
D
a small volcano explodes; organisms of a single species disappear
Blood leaves the heart to go to the rest of
the body through the
Answer:
arteries
Explanation:
goes back through veins
Answer:
blood leaves the heart to go to the rest of the body through the aorta which is the main Artery carrying oxygenated blood
Figure 11-1
In which part of the cell does this process shown in Figure 11-1 take place?
Answer:
The correct answer is - in the ribosomes.
Explanation:
The translation is the process that takes place in the ribosomes attached to the endoplasmic reticulum where they decode the codons present in the form of the mRNA to the amino acid chain with the help of tRNA.
Ribosomes are called the factory of the protein. It involves triplet code to translate into the amino acid sequences to produce polypeptide chains or protein.
Thus, the correct answer is - in the ribosomes.
When a dog chases a rabbit, which combination of body systems work together to supply the animals' muscle cells with the materials they need for energy?
A.Excretory, nervous, digestive
B.Muscular, circulatory, immune
C.Integumentary, digestive, endocrine
D. Digestive, circulatory, respiratory
Answer:
B. Muscular, circulatory, immune
Explanation:
Muscular helps the dog to move and later catch the rabbit.
Circulatory has to do with the blood flow inside the body, helps with oxygen move in the body too.
Immune is, I'm only assuming, helping the dog avoid any sickness and infections when, later, eating the dog.
Answer each with a T for true of a F for false
What causes the change from day to night and vice versa?
A. The orbit of the sun around Earth.
B. The moon's rotation around Earth
C. The rotation of Earth on its axis.
D. The orbit of Earth around the sun
Answer:
c? if u stand infront a light and spin, the opposite side to the light would be dark?
Pls help, due today, would be really appreciated.
for some reason I can't submit my typed answer but here's the screenshot
Hey I'm Chloe, Can you Help Me, I will give Brainlest, thank you :D
What is the period of a wave if the wavelength is 100 m and the speed is 200 m/s?
A. 0.5 s
B. 2 s
C. 100 s
D. 200,000 s
Answer: 0.5s
Explanation:
this is straightforward inquiry and straightforward.
so first you utilize a recipe to ascertain recurrence of the wave.
v _ represents speed a.k.a speed
f_ represents recurrence which you need to discover.
(articulated lemda)_ represents frequency.
At that point you going to put every one of your qualities as indicated by you have in the recipe as shown then settle for f.
At long last, you utilize the time recipe
where
T_ is period a.k.a time which equivalent to the equal of recurrence or equivalent to 1/f.
Basically input your qualities as per the equation and you your answer as 0.5s
Brainliest? pls
The excretory system eliminates wastes. Identify the waste materials described. Filtered material from the blood that includes toxins like urea, salts, and even excess water. Composed of excess water, salt, and a urea that are released from glands. A mixture of undigested material, bacteria, and other materials that cannot be used by the body.
1. Urine
2. Sweat
3. Feces
Explanation: bc I said so
Urine is the filtered material from the blood that includes toxins like urea, salts, and even excess water. Sweat is composed of excess of water, salt, and a urea that are released from glands. Feces are the mixture of undigested material, bacteria, and other materials that cannot be used by the body.
What are the excretory products?Excretion is the physiological process which involves the elimination of metabolic waste products out of the body. The excretory products include amino acids, urea, uric acid, carbon dioxide, water, ammonia and other compounds.
Urine is the filtered material from the blood that include toxins such as urea, salts, and even excess water. Sweat or perspiration is composed of excess water, salt, and urea that are released from the glands. Feces are the mixture of undigested material, bacteria, and other materials that cannot be used up by the body.
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During a field trip, an instructor touched a moth resting on a tree trunk. The moth raised its forewings to reveal large eyespots on its hind wings. The instructor asked why the moth lifted its wings. One student answered that sensory receptors had fired and triggered a neuronal reflex culminating in the contraction of certain muscles. A second student responded that the behavior might frighten predators. Which statement best describes these explanations?
Answer:
The first explanation refers to proximate causation, whereas the second refers to ultimate causation.
Explanation:
The first example refers to proximate causation, whereas the second example to ultimate causation.
What is ultimate causation?The ability of one variable to impact another is known as causality, also known as causality. The first variable might create the second or might change the incidence of the second variable.
Correlation, which shows how much two variables tend to rise or fall together, and causation are frequently misconstrued. Correlation does not, however, automatically imply causality. The variations in both variables could be caused by a third component, for instance.
A statistically significant association has been shown between yellow cars and a reduced accident frequency. Just because there are fewer accidents involving yellow cars does not mean that they are any safer. A third element, such as the person's personality type.
Therefore, The first example refers to proximate causation, whereas the second example to ultimate causation.
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What factors can limit the usefulness of television news as a source of information on environmental issues?
A. News reports are brief.
B. News reports may leave out information.
C. The information comes from only one source.
D. all of the above
Answer: D. all of the above
Explanation:
help me help plssss its 8th grade
Answer:
it is not readen can you please take a picture again
Which part of the female reproductive system is highlighted below?
A. Fallopian tube
B. Ovary
C. Uterus
D. Cervix
Answer:
It's B Ovary
Explanation:
sorry if im wrong
Answer:
ovary because it is an reproductive system in highlighted below
Describe an example of analogous structures. What additional evidence would help you show that these structures are not homologous?
Answer:
The wings of birds and bats.
Explanation:
The wings of birds and bats is the example of analogous structures. Analogous structures refers to those structures that are similar in those organisms that are unrelated or different to one another. The wing structures are similar in both birds and bats because they are evolved to do the same job which flying. It is not evolved because they were inherited from a common ancestor. These wing structure of both bat and bird look similar from the outside but internally they are totally different from one another.
provide an example for learned behavior and for instinct.
Answer: Learned behaviors are modified by previous experiences; examples of simple learned behaviors include habituation and imprinting.
Examples of this include a dog shaking after it gets wet, a sea turtle seeking out the ocean after hatching, or a bird migrating before the winter season. In humans, many reflexes are examples of instinctive behaviors.
Explanation:
Answer:
Hello There!!
Explanation:
An example for instinctive behaviour is nest building in birds and for learned behaviour an example can be playing an instrument.
hope this helps,have a great day!!
~Pinky~
A wave has a frequency of 64 Hz and a wavelength of 17 meters. The speed of the wave is
Answer:
1088 ms-¹
Explanation:
Speed of a wave=Frequency of the wave*Wavelength of that wave
V=64*17=1088ms-¹
Explain why some of your arterioles dilate while others construct during exercise.
Answer:
It looks at the role of adenosine triphosphate, or ATP, a chemical that can be released by red blood cells and is believed to cause blood vessels to dilate during exercise, when muscles demand more oxygen.
Explanation:
Hope this helped Mark BRAINLIEST!!!
the growth of plant seedlings is usually
A.phototropic and gravitropic
B.thigmotropic and gravitropic
C.phototropic and influenced by ethylene
D.gravitropic and influenced by ethylene
Answer:
The correct answer is - A. phototropic and gravitropic.
Explanation:
A plant seedling grows usually two-direction shoots or stems towards light and roots towards the soil or in the direction of gravity. The movement of the plant toward a specific stimulus or effect parts is called tropism and different parts move in a different direction.
The movement of the roots of the plant is usually towards the direction of soil or gravity and this is called gravitropic. The shoot or stem grows from the seedling towards the direction of light and it is called phototropic.
When you hear a phone number and write it down, your brain uses: ____
A. long-term memory.
B. eidetic memory.
C. flashbulb memory.
D. short-term memory.
Answer:
D. short-term memory.
Explanation:
When you hear a phone number and write it down, your brain uses short term memory.Short-term memory refers to the things that people are thinking about in the moment and that are available during a small period as it has a limit to what you can hold. According to this, when you hear a number and write it down your brain uses short-term memory because it is a recent event that you remember in the moment but that you will forget after a period of time.
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What is H²O?
H2O is the chemical formula for water, meaning that each of its molecules contains one oxygen and two hydrogen atoms H.
[tex]\large\underline{\mathbb{AnSwEr}:}[/tex]
H²O is the chemical formula of water.
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Drag each tile to the correct box.
The specific heat of three substances in the image are given in the table.
stamped concrete - 0.75
grass-covered soil - 1.01
Water - 4.18
Place the areas in order based on how fast they’ll heat up on a sunny afternoon. Start with the fastest and end with the slowest.
PLEASE ANSWER QUICKLY I WILL GIVE BRAINLIEST!!
Answer:
Correct answer is A-C-B
Explanation:
Just took the test
The concrete has the lowest specific heat, so it requires very little heat to heat up, making it the fastest substance to heat up; the second is grass, and the third is water, which requires a high temperature to heat up, so A-C-B is the correct order.
What is the significance of the specific heat of the substances?Specific heat is explained as the amount of heat that is needed to raise the temperature by 1 degree, and here the water needs the highest temperature to raise the temperature by 1 degree as a result, even if the water gets a little bit more temperature, it will not be too hot right away.
Hence, the concrete has the lowest specific heat, so it requires very little heat to heat up, making it the fastest substance to heat up; the second is grass, and the third is water, which requires a high temperature to heat up, so A-C-B is the correct order.
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