Answer:
In single celled organisms surface area to volume ratio is optimum for diffusion/exchange of substances between the cell and its exterior and this rate of exchange suffices the requirement of a unicellular organism. However, in multicellular organisms the surface area to volume ratio is low, the exchange that takes place with the exterior or the environment occurs only through the body surface with the help of a specific structure/organ, example (Skin),However, this exchange does not compensate for millions of cells in a multicellular organism, which have distinct requirements based on their function
Explanation:
i) Amoeba gets oxygen gas dissolved in surrounding water through its plasma membrane by the process of diffusion.
ii)The oxygen gas diffused inside the body is used up by amoeba. carbon dioxide gas is also liberated in the surrounding water through the same process of diffusion.
Which gas in Earth's atmosphere helps living things make proteing?
O oxygen
O nitrogen
water vapor
O carbonoxide
all of the organisms except the __________ are in the Animal Kingdom.
Answer:
Dogwood tree
Explanation:
E
Question 16/20
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> NEXT
A BOOKMARK
OUTIN
2
154
30°N
30°N
3
16
Equator
(0)
Equator (0)
4
30°S
30'S
od
60PS
60'S
6
Which zones in the map above are most likely to have a temperate climate (warm summers and cold winters)?
A 1 and 6
D 2 and 5
C 3 and 4
D 1, 2, and 3
Answer:J,YU,LUGIO;'[0BO';HILGUHJFZDFSSa
Explanation:
Select all that describe features of prokaryotes.
A. Prokaryotes don't have a nucleus
B. Prokaryotes absorb nutrients directly from the water they live in
C. The cells are surrounded by a cell membrane
D. Prokaryote Organelles are free within the cell
E. Prokaryotes are multicellular organisms
Answer:
A. Prokaryotes don't have a nucleus
D. Prokaryote Organelles are free within the cell
Explanation:
Answer:
A
D
B
Explanation:
Hope this helps
:)
Use the diagram below to answer the question. Raw Eggs in Two Samples of Water salt water fresh water The diagram shows a raw egg placed in salt water and a raw egg placed in fresh water. Which characteristic of water is demonstrated in the diagram? a Salt water is cleaner than fresh water. b Salt water is more dense than fresh water. с Salt water has a lower temperature than fresh water. d Salt water has less electrical conductivity than fresh water.
Answer:
b.Salt water is more dense than fresh water is your answer.
explain why cells don't just continue to grow bigger as the organisms grow bigger. Why do cells divide? Write in complete sentences
Answer:
Cells divide to make sure the organism is growing and it helps the organism get all the stuff they need to live.
Explanation:
Cells have specific dna is in these cells to help the organism grow and keep making life as we know it, multiple cells die for us living
please answer!! ASAP
1. What is biodiversity?
a) The animals that live only in rain forests.
b) The rich variety of live organisms in every
ecosystem on Earth.
c) The animals and plants species that live
only in your backyard.
2. Why do we need biodiversity?
a) it provides us with the food we need to eat
b)it provides us with virtually all the things we need to stay alive
c)so we have plenty of trees to use for fuels and materials
3.which of the following places has the highest biodiversity?
a)madagascar &indian ocean islands
b)tropical andes
c)caribbean islands
4. how many biodiversity ‘hotspots’ are there in the world?
a)12
b)25
c)34
5. in these ‘hotspots’ how much of the worlds species are found there?
a)10%
b)25%
c)50%
6. what does ‘endemic’ mean?
a) when a lot of people fall ill
b) when something is only found in one place
c) when a disease spreads throughout the world
7. why is biodiversity under threat?
a) habitat destruction
b)introduction of exotic species
c) both of the above and more
8. what can you do to help save biodiversity?
a) reduce, reuse, recycle
b) plant trees, clean local rivers and parks and protect habitats
c) all of the above
1.B
2.B
3.A
4.36
5.B
6.C
7.C
8.C
thanks me
What does the bottom question mean? Will give extra points for right answer only
Answer:
its talking about how much can the red line go up till u hit its temp limit i wish i could help more but i cant see hardly anything to tell u the complete anwser
Explanation:
Answer:
Compare the temperture to the 'recommended temperature limit' line.
Explanation:
'how does....relate' also means compare/describre how they affect one another.
how does the muscular system work with the respiratory system?
Answer:
Respiratory System and the Muscles of Inhalation and Exhalation. The muscular and nervous systems enable the involuntary breathing mechanism. The main muscles in inhalation and exhalation are the diaphragm and the intercontinental (shown in blue), as well as other muscles.
Match the trend in American eating habits with the related meal.
mini-meals in restaurants
a meal category in sharp decline
a meal most people report eating
:: snacks and appetizers
:: homemade meals
:: breakfast
How many offspring would have green seeds?
PLEASE HELP! - Describe why carbon, hydrogen, oxygen, nitrogen, & other elements can combine. Describe the results of these combinations.
Answer:
2hydogen + 1oxygen = H2O = water
Explanation:
The answer lies with carbon's unique properties. Carbon has an exceptional ability to bind with a wide variety of other elements. Carbon atoms can form multiple stable bonds with other small atoms, including hydrogen, oxygen, and nitrogen. Carbon atoms can also form stable bonds with other carbon atoms.
Please help this is due soon
Question: how the distance from a plate boundary affects the earthquake
Answer:
The strength of shaking from an earthquake diminishes with increasing distance from the earthquake's source.
Explanation:
So the if the strength of the shaking at the surface from an earthquake that occurs at 500km deep is considerably less than if the same earthquake had occurred at 20 km depth.
Answer:
lol , ok so the strength and the shacking of the earthquake diminishes with increasing distance from the earthquake's source, so the strength of shaking at the surface from an earthquake that occurs at 500km deep is considerably less than if the same earthquake had occurred at 20 km depth.
Explanation:
Hope u find this useful!
what type of bond do water molecules form with eachother
Which quality makes Earth particularly well-suited to support life?
O A. Its axis precesses about every 26,000 years.
O B. It is roughly the same age as the sun.
O C. It features a wide variety of topographies.
OD. Its distance from the sun helps maintain a narrow temperature
range.
In any given population, certain individuals are more able than others to adjust to environmental changes. Some of these changes are temperature, food supply, pollution, and
A.
increase in offspring.
B.
change of habitat.
C.
decrease of predators.
D.
loss of population group.
Answer: B change of habitat.
how effective are vaccines
Answer:pretty effective helps your body get preapeared when you get attacked by the real thing
Explanation:
11. Many plants use brightly colored flowers to attract insect pollinators.
Which is the MOST likely conclusion about a plant that has very small flowers that
are hard to see?
CLE
Answer: Pollen can be blown in the wind which the bees/other pollinators can follow to get to the flowers.
Explanation: Plants rely on bees and other insects to reproduce and so they have adapted, over time, to become more attractive to them. Bees are drawn to plants with open or flat tubular flowers with lots of pollen and nectar. A flower's scent can have particular appeal to bees, and its bright colors or pollen being blown in the wind may lure the bees in.
What can you infer about the available matter and energy at each level?
Answer:
Matter and energy are distributed differently in different ecosystems. For example, a single tree in a rain forest would be greatly outnumbered by the primary and secondary consumers, such as the insects and birds, that live on that tree. The upper layers of the pyramid of numbers would be larger than the bottom layer representing the single tree.
we should not touch and test acid. Give reason why?
Answer:
because the toxic of it can burn your skin the toxic of acid is very dangerous so we couldn't touch it if we touch it our skin or your skin will burn or turn it into ashes
Listed in the Item Bank are individual steps that need to be ordered. To find out more information about steps, some have more
details available when you click on them. Drag and drop the steps in the proper order by placing each in its corresponding open
rectangle. Be sure that the earliest step is placed next to the number 1.
Succession happens in predictable ways. Can you put the steps in order?
ITEM BANK: Move to Bottom
Grasses
Larger trees
Shrubs
Flowering plants
Small trees and shrubs
Soil formers
1
drag and drop answer here
N
drag and drop answethere
3
drag and drop ansvar here
4
6
The correct order or the step is mentioned in below soil formers, grasses, flowering plants, shrubs, small trees and shrubs, then larger trees.
What impact on plants due to depletion of nitrates or nitrogen?Nitrate plays very vital role in our ecosystem and such that due to presence of the nitrogen plants grow rapidly as well as it produces bigger size fruits and flowers. Plants absorb nitrates in water through their roots without nitrates, the amount of the chlorophyll in leaves reduces.
Nitrate has been a common inorganic ion found in plants that has required for proper growth and development. Many growers has been included the addition of the nitrates in their nutrient regiment to the stimulate plant growth. Plants has been acquire nitrate through the root intake from the soil and water around them.
Phosphorus has a limiting growth factor in the terrestrial ecosystems because the quantity of phosphorus in soil are generally small it has been often the limiting factor for plant growth.
Therefore, The correct order or the step is mentioned in below soil formers, grasses, flowering plants, shrubs, small trees and shrubs, then larger trees.
Learn more about plants on:
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The processes involved in the rock cycle include all of the following EXCEPT:
compaction
O condensation
O weathering
O erosion
1
Answer:
Condensation
Explanation:
Condensation is about water not rocks.
what is digestion? Starting from mouth, state the various steps involved in digestion
Answer:
The gastrointestinal system starts in the mouth. In reality, as soon as you eat the first bite, digestion begins here. Chewing splits the meal into sections that are easier to eat, and saliva combines with food to start breaking down the body into a shape that you can consume and use.
Explanation:
The mechanism of digestion can be divided into various phases, such as mouth, stomach, small and large intestine.
A complicated mixture of mechanical and chemical processes are used in digestion. The mechanism includes food intake and push, mechanical or physical digestion, chemical digestion, absorption, and defeat.
What does it mean that there is both unity and diversity of life at the level of the cell?
Answer:
All livings organisms are with unicellular origin. The cells have a common structure like cell membrane, DNA , RNA and necessary enzymes. The genetic code of protein synthesis is almost similar with few exceptions. This shows unity in design.
Further evolutionary changes took place due to environmental stress. The genome of each species is designed as per need and efficiency. This is diversity.
This is true with all five kingdoms of life that is monera, protista, fungi, plantae and animalia.
Explanation:
how to write ammonium oxide
Answer:
(NH4)2O
Explanation:
Nitrogen>Hydrogen>Beryillum>Carbon Oxygen
When something rust,
Answer:
It gets heavier
Explanation:
The mass of iron increases as rusting happens when oxygen combines with iron therefore the mass increases.
Answer:
It gets heavier
Explanation:
The mass of iron increases as rusting happens when oxygen combines with iron therefore the mass increases.
The pedigree below shows the inheritance of a dominant allele of a gene in a family over several generation. Circles represent females and squares represent males. Shaded symbols indicate individuals carrying the allele. The pedigree suggest that the gene is on a nuclear chromosome, and not on a mitochondrial DNA, because A) mitochondrial genes are not heritable B) mitochondrial mutations cannot produce dominant traits C) maternal mitochondrial mutations are inherited by all of a mother's offspring D) mitochondrial DNA is circular, whereas chromosomal DNA is linear
Complete question:
You will find the pedigree in the attached files
Answer:
The correct option is C) maternal mitochondrial mutations are inherited by all of a mother's offspring.
Explanation:
Mitochondrial inheritance is one of the ways in which a disease or a trait might be inherited from the maternal line.
Most of the DNI is located in the nucleus, but there is also DNI in mitochondria. Sperm cells hardly carry mitochondria, so mitochondrial DNI is mostly inherited from the maternal side. If there exists any mutation in this DNI, the whole progeny of the mutated woman will be affected, as they will get the mother´s mitochondria carrying the mutation. On the contrary, if there is a man affected by a disease caused by a mutation in mitochondrial DNI, non of their descendants will get the disease.
In the exposed pedigree, we can see that the mother is affected by the disease, but the couple had two daughters, and only one of them was affected, while the other one was not. This tells us that the mutation occurred on a nuclear chromosome. If the mutated allele was in mitochondria, both daughters would be affected.
The pedigree suggests that the gene is on a nuclear chromosome, and not on a mitochondrial DNA because maternal mitochondrial mutations are inherited by all of a mother's offspring (Option C).
Mitochondrial DNA (mtDNA) is a special type of genetic material that exhibits a matrilineal inheritance pattern.In consequence, all genes (and mutations) contained in mtDNA will pass from the mother to her offspring.It is for that reason that mtDNA is widely used in evolutionary studies (we can trace matrilineal lineage from mtDNA).In conclusion, the pedigree suggests that the gene is on a nuclear chromosome, and not on a mitochondrial DNA because maternal mitochondrial mutations are inherited by all of a mother's offspring (Option C).
Learn more in:
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where are peripheral proteins located
Answer:
Explanation:
Peripheral membrane proteins are found on the outside and inside surfaces of membranes, attached either to integral proteins or to phospholipids. Unlike integral membrane proteins, peripheral membrane proteins do not stick into the hydrophobic core of the membrane, and they tend to be more loosely attached.
Help Plz
Which of these does NOT describe Gary Paulsen? (5 points)
a
adventure writer
b
master storyteller
c
olympic champion
d
Iditarod participant
Answer:
c
Explanation:
why is it important for environmental scientists to have a background in many fields of study
Answer:
With these rapid changes, there is a need to study each step that may alter the environment so that the natural ecosystem may still be protected or replaced by a better one. Environmental science is important to save our world from destruction. Because of man's abusive actions, the environment is not safe anymore.
