Explanation:
Poorly drained soils tend to have a high percentage of organic matter because low oxygen levels limit decomposition organisms.
20 points
Cells are classified as prokaryote and eukaryote. If a cell has no nucleus
and no membrane bound organelles, as mitochondria and chloroplasts,
then it is classified as *
A.Eukaryote
B.Prokaryote
C.Endosymbiosis
D.both a and b
Answer:
B. Prokaryote
Explanation:
Because it does not have a well defined nucleus and bound organelles
Answer:
B
Explanation:
A prokaryotic cell is a simple, single-celled (unicellular) organism that lacks a nucleus, or any other membrane-bound organelle.In prokaryotes, the DNA (chromosome) is in contact with the cellular cytoplasm and is not in a housed membrane-bound nucleus. ... Throughout the course of evolution, organelles such as mitochondria and chloroplasts (a form of plastid) may have arisen from engulfed prokaryotes.
what is the main difference between a mrna and trna?
mRNA is the connection between Gene's and proteins while tRNA provides correct amnio acids to the ribosomes.
How is starch produced in plants??
glucose molecules are compounded together and make a bigger molecule (polysaccharide)
which type of microscopy allows us to clearly view the internal contents of cell structures smaller than 200 nm?
Because the cell structures are so small, to clearly view them, requires a microscope that has a higher power of magnification than light microscopes can prove. This is usually an Electron Microscope.
Electron microscopy (EM) is a technique used to obtain high-resolution images of biological and non-biological specimens. It is often used to investigate the detailed structure of tissues, cells, organelles, and macromolecular complexes. (UMass Chan Med School Website)
In what stage do cells spend most of their life
Answer:
the interphase stage
info at
https://www.genome.gov/genetics-glossary/Cell-Cycle#:~:text=A%20cell%20spends%20most%20of,mitosis%2C%20and%20completes%20its%20division.
happy halloween <3
The school cross country team is preparing for its state meet. The night before the meet the coach advises the team to eat a meal that will be a
good source of quick energy to run the race. Which macromolecule should they consume the most of?
Answer:
Protein
Explanation:
_____ can cause a cell to shrink due to a lack of water being able to enter the cell.
Answer:
Hypertonic Solution
Explanation:
Solution outside the cell is in has much higher concentration of ions than inside the cell. Due to osmosis, water leaves the cell.
what by-product of anaerobic respiration makes this possible
Answer:
The end products of anaerobic respiration are Lactic acid or ethanol and ATP molecules. Anaerobic respiration takes place in the absence of oxygen and is seen in lower animals. During the process of Anaerobic Respiration in prokaryotes, there is a breakdown of glucose to produce energy for cellular activities.
Explanation:
rank up
the connective tissue covering an individual muscle fiber is the
Answer: Within the fasciculus, each individual muscle cell, called a muscle fiber, is surrounded by connective tissue called the endomysium.
Convert 10 cm to meters and express the answer to the correct number of significant digits.
A) 0.10 m
B) 0.1 m
C) 100 m
D) 1 m
Answer:
B. 0.1
Explanation:
Trust me
Answer:
(b) 0.1 m
Explanation:
edge 2022
What do the arrows mean on a food web or food chain
Answer: It represents the flow of energy in an ecosystem. It indicates which direction the energy and nutrients will flow. It shows the relationship between organisms.
Line is defined as a
a. a geometric shape that is open and moves from one point to another.
b. a slowly curving path along a plane.
C. a path through space.
d. The distance or area between around, above, below,and within objects.
Please select the best answer from the choices provided
Ο Α
ОВ
OD
Answer:
A is the answer
Explanation:
a line is a infinetly thin infinetly long straight line.
what is the last structure of the air passageway in your lungs
Answer:
Bronchioles
Explanation:
You inhale through your nose and the air is filtered. It goes down the pharynx. It goes through the larynx. A "door" called the epiglottis opens during breathing. Then it enters the trachea. (windpipe) It goes through the bronchus. The tertiary bronchi branch into fine tubules called bronchioles, the last passageways for air. Air ends its pathway in the ________. (I bet you can guess because you're so smart!) They're surrounded by capillaries that connect the pulmonary arteries and veins. This enables the transfer of oxygen and carbon dioxide.
I hope this helped!!! Good luck on the test/quiz/project/homework/etc. you're working on! If you want I can give you a l!nk to the article I used. If not, it's fine too. Have a great day!
Please, could someone help me with this?
1. abortion
2. testing cosmetic products on animals
hope this helps :)
How can you tell that the rock, Diorite, is intermediate?
Answer: You can tell that this rock has roughly an equal abundance of white and black minerals. If you click to zoom, you will see only one feldspar and no quartz.
Two things acting upon each other
Answer:
The meaning of force? or gravity pulling the object towards the Earth.
to allow movement of the tendons within the carpal tunnel zone, each tendon is encased in a __________.
To allow movement of the tendons within the carpal tunnel zone, each tendon is encased in a sheath.
The sheath is a fibrous but at the same time serous element that is composed of a viscous liquid called the synovium, which is designed in order to allow the tendons to move with the bones.
The function of the sheaths is to allow a correct sliding between the tendon where it meets the bone through which it passes.
The importance of sheaths for the biomechanics of movements is that if they were not located in the tendons, these tissues would wear out very easily, thus causing injuries such as tenosynovitis.
The best known synovial sheaths are those of the flexor apparatus of the hand, that is to say to the internal and external digitocarpal, in the fibrous band of the foot, and in the long tendon of the biceps muscle.
Therefore, we can conclude that to allow movement of the tendons within the carpal tunnel zone, each tendon is encased in a sheath.
Learn more here: https://brainly.com/question/13464872
what is the name used to refer to the clogged xylem tissue?
The name used to refer to the clogged xylem tissue is heartwood in contrast to sapwood, a term for the dead, clogged xylem cells near the center of a tree. Heartwood has been the tree as the main column of support.
What is xylem?Xylem has been defined as the vascular bundle which has been used to transport water and other minerals from the root part to other parts of the plant. The main function of the xylem and phloem is to transport water and minerals from root to other parts of the plant.
The last common ancestor of the gymnosperms and angiosperms possessed the same characters such as the pollen, seeds, and the vascular tissue.The gymnosperms are a group of plant that are known as seed- producing plants such as Ginkgo, gnetophytes, cycads etc.
Angiosperms has been the plant that produces flowers and having seeds enclosed within their fruit. Gymnosperms have no production of flowers and fruits and they contain bare seeds on the surface of their leaves.
Therefore, The name used to refer to the clogged xylem tissue is heartwood in contrast to sapwood, a term for the dead, clogged xylem cells near the center of a tree. Heartwood has been the tree as the main column of support.
Learn more about xylem on:
https://brainly.com/question/12813346
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which muscle functions in extensions of the digits of the hand?
1. State one possible negative effect of a warming trend on Earth. Specify how this effect will
have a negative impact on the living environment.
Answer:
One stated possible negative effect of a warming trend on earth is that the polar ice caps could melt.
Explanation:
Specification on how this will have a negative impact on the living environment is that it will cause sea levels to rise this is negative because: tsunamis will become more severe and damaging to land. Rain storms will have severe floods then what we have now.
Hope this helps.
help.................................
Answer:
your awnser is C
Explanation:
Hope that helps :)
Answer:
help... i need somebody.. help.... not just anybody
Explanation:
help
which phyla do crinoids and sea cucumbers belong to?
the antibiotic penicillin which made from fungi is harmfull for bacterias?
Answer:
From 1945–1955 the development of penicillin, which is produced by a fungus, along with streptomycin, chloramphenicol, and tetracycline, which are produced by soil bacteria, ushered in the antibiotic age.
Explanation:
Hope it helps you..!
4. What muscle joins with the short head of the biceps brachi?
Answer:
attaches to the coracoid process of the scapula
the process of red blood cell production is called
Answer: Erythropoiesis
Explanation:
74 POINTS!!!!!!!!
Do you think we should attempt to
quantify and assign market values
to ecosystem services and other
entities that have only non-market
values? Why or why not?
Answer:
yes
Explanation:
yes because I like the same thing cuz you just like doing like what you have to do and I did it already and I got it a
suppose you and a friend are making iced tea using identical glasses. You both use the same amount of water, and the water temperature is the same in both glasses. Explain how you can tell who added more ice tea mix to the glass.
Answer:
Iced-Tea Problem
220 g of 35˚C tea (water) is poured over 250 g of -10˚C ice.
What happens...
The warm water (tea) will cool down to 0˚C. As it cools the ice will heat up to 0˚C and then start to melt.
There is plenty of ice however and only a portion of it will melt. Find the amount of ice that melts into water
and you’ll know the final composition and even the dilution factor on the tea.
Cool tea water down to 0˚C
4.184 J/g˚C · 220 g · 35˚C = 32216.8 J removed to cool tea to 0˚C
Warm ice up to 0˚C
2.09 J/g˚C · 250 g · 10˚C = 5225 J to heat ice up to 0˚C
This heat comes from the cooling water, so substract this amount off the total above
32216.8 - 5225 = 26991.8 J of heat that will MELT the ice
mass of ice melted = 26991.8 / 334 = 80.8 g of ice melted
220 g + 80.8 = 300.8 g of water
250 g - 80.8 = 169.2 g of ice
final mixture for
my glass of iced
tea all at 0˚C
220.0 g original tea
300.8 g final tea
The dilution factor is simply the original volume
over the final volume (or masses here ). = .731 or 73.1%
of the original
concentration
If I’m going to get a dilution of 73.1%, I should
compensate by mixing my tea in 26.9% LESS
volume than the directions state. So I will not dilute
the tea to 2 quarts (64 oz), but rather to 1.462
quarts (46.8 oz).
It’s hot and I want a glass of iced tea as soon as possible. The directions for my tea say to boil some water,
add 2 tea bags (these are the big bags), steep for 4-5 minutes, then add enough water to make 2 quarts which
turns out to be a pitcher of tea. However, if I make this tea the exact concentration I want now, when I pour
it over ice the ice will melt (because the tea will still be quite warm) and my tea will be too dilute. So I
calculate how much stronger I should make the tea KNOWING I will pour the warm tea over ice to make
my glass of iced tea.
(a). What is the final temperature and composition of the glass of iced-tea?
(b). What will be the concentration of the tea relative to the original concentration?
(c). How concentrated should I mix the tea knowing that it will be diluted when
poured over the ice?
(a)
(c)
(b)
only 73.1% of the full
amount to compensate
for dilution
Please help !! 100pts
1.
Which of the following best summarizes why the technological invention of microscopes was important to biology?
It created public interest and support for research.
It created a means of funding for cell research.
It allowed for development of the cell theory.
It proved that cells could form spontaneously.
2.
Which of the following best compares the structures found in plant cells and animal cells?
Plant cells have rigid cell walls and do not contain mitochondria or ribosomes while animal cells do.
Plant cells contain rough endoplasmic reticulum and a Golgi apparatus while animal cells contain smooth endoplasmic reticulum surrounded by lysosomes.
Animal cells do not contain chloroplasts, cell walls, or a large central vacuole while plant cells do.
Animal cells contain cell walls and a large central vacuole while plant cells contain cell membranes and many small vacuoles.
3.
Which equation describes what happens in photosynthesis?
CO2 + O2 + H20 + energy → CH2O5
6CO2 + 6H2O + energy → C6H12O6 + 6O2
C6H12O6 + 6O2 → 6CO2 + 6H2O + energy
C6H12O6 + H20 → CO2 + energy
4.
Early elements of the cell theory followed soon after the development of Hooke’s light microscope. What does this relationship suggest about the evolution of the cell theory since Hooke?
Progress on the cell theory was delayed by a lack of technological progress.
Scientists needed to focus less on cells and more on microscope development.
Isolated scientists contributed pieces of the cell theory to form the whole.
Improvements in technology are closely related to changes in the cell theory.
5.
Oxygen is a product of photosynthesis. The primary role of this oxygen in cellular respiration is to
combine with lactate, forming pyruvate.
combine with carbon, forming CO2.
yield energy in the form of ATP as it is passed down the respiratory chain.
act as an acceptor for electrons and hydrogen, forming water.
6.
Some proteins catalyze biochemical reactions. If a genetic defect prevented a protein catalyst from being produced, which of the following do you predict would happen in the cell?
The reverse reaction of the one the protein catalyzes would begin to proceed.
The reaction the protein catalyzes would only occur in some places in the cell.
The cell would find a different type of protein to catalyze the reaction.
The reaction the protein catalyzes would proceed very slowly or not at all.
7.
Which statement best compares a eukaryote and a prokaryote?
Eukaryotes use active transport to move substances across the cell membrane, while prokaryotes use facilitated diffusion.
Eukaryotes have membrane-bound organelles, while prokaryotes have few specialized structures.
Eukaryotes use flagella to move themselves through substances, while prokaryotes are not able to move.
Eukaryotes have a cell wall, while prokaryotes have a cell membrane.
8.
What are the reactants for cellular respiration?
H2O and O2
Glucose and O2
Glucose and CO2
H2O and CO2
9.
Which of the following best compares the membranes found in different types of cells?
Animal cells have cell membranes and cell walls, but plant cells do not have cell membranes.
Prokaryotes and eukaryotes both have cell membranes, but eukaryotes also have membrane-¬‐bound organelles.
Animal cells have membrane-¬‐bound organelles, while plant cells carry out the functions necessary for life in the cytoplasm.
Prokaryotes have only cell membranes, while eukaryotes have both cell walls and cell membranes.
10.
Which of the following characteristics defines a cell as a eukaryote?
Having ribosomes
Being able to move
Having a nucleus
Being able to reproduce
11.
Water has a much higher specific heat than most other covalent compounds. What do you predict might happen if water had a low specific heat instead?
Harmful organisms living in water would reproduce at a rapid rate.
Organisms that are sensitive to changes in temperature would die.
Flooding would occur and animals would be forced to migrate.
Plants would not have enough water to effectively carry out photosynthesis.
12.
Which of the following best describes a result of the polar nature of water molecules?
Ionic compounds dissolve easily in water.
The volume of water decreases by nearly half when it is frozen.
Water molecules repel each other.
Water molecules repel most other substances.
Explanation:
1. It allowed for development of the cell theory.
2. Animal cells do not contain chloroplasts, cell walls, or a large central vacuole while plant cells do.
3. 6CO2 + 6H2O + energy → C6H12O6 + 6O2
4. Improvements in technology are closely related to changes in the cell theory.
5. Yield energy in the form of ATP as it is passed down the respiratory chain.
6. The reaction the protein catalyzes would only occur in some places in the cell.
7. Eukaryotes have a cell wall, while prokaryotes have a cell membrane.
8. Glucose and O2
9. Animal cells have cell membranes and cell walls, but plant cells do not have cell membranes.
10.Having a nucleus
11. Plants would not have enough water to effectively carry out photosynthesis.
12. Ionic compounds dissolve easily in water.
I hope this helps!
What determines whether a metamorphic rock is foliated or nonfoliated?
Answer:
i think its the third.
temperature,pressure and the original type of rock
Why are there so many earthquakes in califonia?
Answer:
The earthquakes of California are caused by the movement of huge blocks of the earth's crust- the Pacific and North American plates. Over time, these faults produce about half of the significant earthquakes of our region, as well as many minor earthquakes.
Answer:
The level of seismic activity is due to North Carolina's present upon a passive not active continental margin unlike West Coast regions which experiment frequent earthquakes along known and active Falls owns all of the known facts Exposed on the surface North Carolina are ancient and Interactive.