Answer:
Erythrocytes are not considered true cells, because of their lack of a nucleus. The effect of having no nucleus makes their self-reproduction impossible, and the absence of mitochondria is a disadvantage because they have to obtain energy by alternative reactions.
Explanation:
Erythrocytes, or red blood cells, are the structure in charge of transporting gases in the blood. When these cells are mature, they have already lost their nucleus —in order to have space to house the hemoglobin molecule— which prevents mature red blood cells from being able to reproduce.
Additionally, red blood cells do not have mitochondria —the main energy generator in eukaryotic cells— so in order to obtain energy they need to perform lactic fermentation, with a lower enegetic yield, which may be a disadvantage, but sufficient for this structure to perform its function.
Predicting future events in a person's life based on the position of planets is an example of
physics
geology
astronomy
pseudoscience
Answer:
pseudoscience
Explanation:
Answer:
Give him brainiest the guy is right
Explanation:
please help if you can!
need to enter three words for the word bank that matches for mutation types ^^
Answer: I can help
Explanation:
InsertionsubstitutiondeletionStomach acid has a pH of about _____. a. 4 c. 6 b. 2 d. 10
Vacuole Cell membrane Nucleus CUID DIID Chloroplast Cell wall How does the cell membrane in the diagram above help to maintain the health of this cell? By manufacturing protein to provide energy for the cell O By providing support and structure for the cell O By storing food as future energy for the cell O By regulating the transport of materials in and out of the cell
Answer:
By providing support and structure for the cell
Explanation:
From what I am able to understand from this question, the second answer makes the most sense.
Which star is hotter proxima Centauri or deneb?
Answer:
deneb is hotter
Explanation:
You are walking in a clear-cut section of forest a few days after a heavy rainstorm A nearby stream is very muddy and has
many dead fish. What might have happened?
Answer:
in my oppinion its call a
source of pergisol
Explanation:
What if climate change is self-sustaining? This is already the case, for example, with melting arctic sea ice. This reflects solar radiation, which allows the ocean, located under the ice, to stay cold. But when sea ice melts, the ocean absorbs heat from the sun, which melts more ice. In general, it is difficult to predict the tipping point where such a feedback loop will engage.
Spread over more than 23,000,000 km2, at the top of the globe, permafrost (permanently frozen ground) could enter such a vicious circle. Normally, up to 4 m of soil and plant debris cover the permafrost. This top layer (called the active layer) normally melts every summer, and freezes in winter. It thus protects the permafrost from the rise in heat outside. But in the spring of 2018, a team working at a research station in Tchersky, Russia, discovered that near-surface land had not frozen over at all during the long, dark polar night.
In the equation shown, what are the reactants? 2H2-02 --> H2O
Hydrogen atoms
Hydrogen and oxygen molecules
Water molecules
Ice crystals
Answer:
Hydrogen and oxygen molecules
Explanation:
A Neutral will measure ________ on a Ph Scale.
Answer:
7.0
Explanation:
Answer:
5 and under would be nuetral
confusin help pls ??????????
Answer:
yes I ldk what u want with no pictures
Large molecules containing carbon atoms are called micro molecules true or false
The cell membrane contains channels and pumps that help move materials from one side to the other. What are these channels and pumps made of? *
A. Carbohydrates
B. Lipds
C. Bi-Lipids
D. Proteins
Answer:
D protein it taste good very good
HELP FAST HELP ASAP
Which is a renewable resource?
which one of these is it
petroleum
wood
iron
coal
will get awarded with brainliest
Answer:
I think petroleum
but I am not sure
Answer:
Wood
Explanation:
Wood comes from trees. Because trees can be grown, they are renewable.
the rate of photosynthesis can be affected by several factors, such as light intensity, temperature ,water, and carbon dioxide. describe how the lack of water in an environment can affect the amount of carbon dioxide absorbed by the plant
Answer:
Plants need water, so that their guard cells can fill up and become turgid which would allow the stomata to open and gas to exchange. If there is not much water, not much gas exchange can occur hence not much Carbon dioxide can be taken in.
Explanation:
Plants require water for the process of photosynthesis. Plants need water so that their guard cells can fill up and become turgid. This allows the exchange of gases in the stomata.
How does water affect photosynthesis?
During photosynthesis, the plants take in carbon dioxide and water molecules from the air and soil particles. Within the plant cell, this water is oxidized to generate oxygen gas, meaning that it loses electrons, while the carbon dioxide gas is reduced in the chloroplast of the plant cell by gain of electrons to produce carbohydrates. This process transforms the water into oxygen gas and the carbon dioxide gas into glucose molecules (carbohydrates).
Plants need water, so that the guard cells in the plant can fill up and become turgid which would allow the stomata to open and exchange of gases. If there is not much water present in the guard cells, not much gas exchange can occur hence not much of the carbon dioxide can be taken in from the atmosphere.
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which part of the electromagnetic spectrum can be seen by humans
Answer:
A) Visible Light
Some plant roots grow with mycorrhizal fungi. The fungi absorb water and
minerals and pass them on to the plant and receive carbohydrates from the
plant. This is an example of:
- mutualism
- competition
- predation
- parasitism
Answer:
-mutualism
Explanation:
Hope it helps hehe
A strand of DNA contains the bases adenine, cytosine, cytosine, and guanine, in that order. Which would be the order of the bases on the opposite strand of DNA?
cytosine, adenine, adenine, and thymine
cytosine, thymine, thymine, and adenine
thymine, guanine, guanine, and cytosine
thymine, adenine, adenine, and cytosine
Answer:
thymine, guanine, guanine, and cytosine
Explanation:
The order of the bases on the opposite strand of DNA should be Thymine, Guanine, Guanine and Cytosine.
DNA and complementary base pairingThe deoxyribonucleic acid (DNA) is a double helix composed of two long chains of sequential nucleotides.
In DNA there are four classes of nucleotides, each containing one different nitrogenous base (i.e., Adenine, Guanine, Cytosine, Thymine).According to the base pair rules of complementarity, Adenine always pairs with Thymine, whereas Guanine always pairs with Cytosine.In conclusion, the order of the bases on the opposite strand of DNA should be Thymine, Guanine, Guanine and Cytosine.
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Convection causes tectonic plates to move.
A) True
B) False
Answer:
Hope this helps.
Explanation:
Plates at our planet's surface move because of the intense heat in the Earth's core that causes molten rock in the mantle layer to move. It moves in a pattern called a convection cell that forms when warm material rises, cools, and eventually sink down. As the cooled material sinks down, it is warmed and rises again. So I think false
Answer:
the anwser is false aka b
Why are epithelial cells in membranes
packed tightly?
to keep organs connected
to protect organs
to form different layers
Answer:
to protect organs
Explanation:
Epithelial cells are cells found in the human skin. They are tightly packed cells which helps to protect organs in the human body.
The cells are divided into different layers with an inner part and the outermost layer.
The skin is the largest organ of the human body. It protects all organs from the external environment.
You get a cut on your finger and some bacteria enter. Your immune system cells kill off the invaders by ingesting them. This is an example of:
The digestive process begins as food is chewed in the mouth. The chewing of food is primarily conducted by the – A immune system B lymphatic system C muscular system D respiratory system
BRAINLYIST HELP PLSSSS
Answer:
If its asking for how much liquid was added it would be 25 grams, because I can tell that half of 50 is 25 and then that 25 seemed to be what was added.
Explanation:
Hope its right! Not too sure what the question asks for!
In the mall, a jeweler offers to sell you a diamond ring for fifty bucks. How could you test if the rock in the
ring is a real diamond?
Answer:
By dropping it in a volcano and pick it back up
Explanation:
Answer:
U gotta have a tester. DUH.
Brainliest for correct answer
HELP PLEASE!!! i really need help!
its the first destablish of conster defore
BRAINLYIST PLSSSS HURRY
Answer:
A
Explanation:
only one type of atom= (PURE SUBSTANCE not mixture)
is atom chemically bonded to another atom? (NO- element, not compound)
Answer:. Maybe A. Im not sure.
Which structure, if cut off, will hamper sexual reproduction in fungi?
Answer:
The fruiting body
Explanation:
I learned this in 7th grade and am in 10th now so your good :)
Is a crayfish living or nonliving and what are two reasons
Answer: Crayfish are freshwater crustaceans resembling small lobsters (to which they are related). ... Crayfish feed on animals and plants, either living or decomposing, and detritus. So yes they are alive
Explanation:
No need to explain sunce I explained above :)
Answer:
crayfish are living.
Explanation:
1. They are like small lobsters and lobsters are living. 2.And they can animals or whatever they find thats good to them i guess.
Is an acid a compound that splits OH-ions
Answer:
Acids are compounds that dissociate (break) into hydrogen (H+) ions and another compound when placed in an aqueous solution. ... If one of the ions is OH-, the solution is basic. An example of a strong base is sodium hydroxide (NaOH).
hope this helped
Please mark me Branliest
What function do teeth play in digestion?
Answer:
When you put food in your mouth, your teeth break the food into smaller pieces, and the salivary glands under your tongue and on the sides and roof of your mouth release saliva. This saliva mixes with your food to make it easier to swallow.
Explanation:
Define and give examples of greenhouse gases
Answer:
a gas that absorbs infrared radiation and radiates heat in all directions. EX) water vapor, carbon dioxide, methane, and ozone
The primary gases that cause the greenhouse effect are fluorinated gases (also known as "greenhouse gases"), water vapor, carbon dioxide, methane, nitrous oxide, and nitrous oxide (all of which are naturally occurring).
What is the effect of greenhouse gases?The so-called greenhouse effect is a result of these, low amounts of the three most well-known greenhouse gases carbon dioxide (CO₂), methane, and nitrous oxide occurring naturally in the atmosphere. Greenhouse gases on Earth trap heat in the atmosphere, warming the whole globe.
Because it is one of the gases in the atmosphere that causes the greenhouse effect, which causes the Earth to warm, carbon dioxide is known as a greenhouse gas.
Therefore, gases in the atmosphere known as greenhouse gases have an impact on the energy balance of the planet.
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