Answer:
There are three basic types of freshwater ecosystems:
Lentic: slow moving water, including pools, ponds, and lakes.
Lotic: faster moving water, for example streams and rivers.
Wetlands: areas where the soil is saturated or inundated for at least part of the time.
Main types of aquatic ecosystems are Freshwater Ecosystem, Lotic Ecosystems, Lentic Ecosystems, Wetlands, Marine Aquatic Ecosystem, Marine Aquatic Ecosystem, Coastal Systems.
What is aquatic ecosystem ?An ecosystem of living organisms and their physical and chemical environment where they linked with each other and flow of energy, nutrient occur.
The aquatic ecosystem are freshwater habitats such as lakes, ponds, rivers, oceans and streams etc.
Freshwater Ecosystem occupies to 0.8 percent of earth surface such as lakes, ponds, rivers and streams and temporary pools.
Lotic Ecosystems include rapidly unidirectionally flowing waters including the rivers and streams.
The species of this system include beetles, mayflies, stoneflies and trout, eel, minnow, etc.
Lentic Ecosystems refers to standing water habitats where lakes and ponds are the primary examples. The species are algae, crabs, shrimps, and amphibians such as frogs and salamanders.
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What is the function of the cell membrane?
Contains Organelles
Control center of the cell
Regulates what enters and exit the cell
Answer:
[tex]\boxed {\tt Regulates \ what \ enters \ and \ exits \ the \ cell}[/tex]
Explanation:
The cell membrane is a phospholipid membrane that surrounds the cell and helps protect it. The main purpose of the cell membrane is to control the transport of substances that enter and exit the cell.
Therefore, the correct answer is regulates what enters and exits the cell.
If chloroplasts are used to make food through the process of photosynthesis (only in plants),
which organelle is responsible for breaking down that food in order to release the chemical
energy stored in foods [hint: both types of cells have this organelle) I
Answer:
mitochondria
Explanation:
18. Which molecule is a Cdk inhibitor or is controlled by p53?
a. anti-kinase
b. cyclin
c. p21
d. Rb
Answer:The answer is C
Explanation:p21
What can you inter about the growth of the seed type pictured in the graphs below?
a. More seeds grow with more light.
b More seeds grow with less light.
C. The seeds grow faster with more light.
d Tinht has no effect on seed growth.
Answer:
The 2 graphs are pretty much showing the same effects on the dependent variable, so I would say that light has no effect on seed growth.
On the other hand, just by thinking logically, Seeds are usually underground before germination, so light wouldn't really affect them much.
So, light wouldn't really affect them
So d)
What is Isotonic solution??
Answer:
An isotonic solution is one that has the same osmolarity, or solute concentration, as another solution. If these two solutions are separated by a semipermeable membrane, water will flow in equal parts out of each solution and into the other.
Answer:Isotonic solutions contain equal concentrations of impermeable solutes on either side of the membrane and so the cell neither swells nor shrinks.
Explanation:does that help you
single stranded nucleic acid
located in cell and viruses
Answer:
RNA
Explanation:
Ribonukleidacid is the answer for your question
vf. P.
Which of the following organelles
are greatly reduced in animal
cells?
A. eukaryotes
B. lysosomes
C. nucleus
D. vacuoles
Answer:its D- vacuoles
Explanation: i did further research cause the other answer is bs
Vacuoles are organelles found both in plant and animal cells. However, these organelles are greatly reduced in animal cells (Option D).
Vacuoles are organelles that function to store substances (.e., food or nutrients, waste products, etc) both in plant and animal cells.
These organelles are filled with water and contain both inorganic (e.g., salts) and organic molecules (e.g., enzymes).
In animal cells, vacuoles are much smaller than in plant cells and they are often used to store materials and/or transport substances.
In conclusion, the vacuoles are greatly reduced in animal cells (Option D).
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What is the job of proteins in the plasma membrane?
A. Transport materials across the membrane
B. Prevent all solutes from leaving the cell
C. There are no proteins in the plasma membrane
D. Provide energy for the cell
Which is true of all animals?
Answer:
All animals are eukaryotic, multicellular organisms, and most animals have complex tissue structure with differentiated and specialized tissue. Animals are heterotrophs; they must consume living or dead organisms since they cannot synthesize their own food and can be carnivores, herbivores, omnivores, or parasites.
Explanation:
plz mark me brilliantest
The reactions involving most chemical compounds in
living systems depend upon the presence of
(A) sulfur as an enzyme
(B) water as a solvent
(C) salt as a substrate
(D) nitrogen as an energy carrier
HELP WHICH ONE?
How is nuclear energy related to the nucleus of an atom?
Answer:
Nuclear energy is energy that comes from the nucleus (core) of an atom. Atoms are the particles that make up all objects in the universe. Atoms consist of neutrons, protons, and electrons. Nuclear energy is released from an atom through one of two processes: nuclear fusion or nuclear fission.
Explanation:
7. Explain why protein is an important part of a person's diet. (remember the important functions of proteins).
Answer and Explanation:
Your body uses protein to build and repair tissues. You also use protein to make enzymes, hormones, and other body chemicals. Protein is an important building block of bones, muscles, cartilage, skin, and blood.
When one organism eats another, some energy is destroyed? (True or False)
Answer:
False
Explanation:
3. Describe the meaning of the term "apoptosis,"
and state its importance.
What disease did the Native Americans transfer to the Europeans?
Answer:
Influenza, smallpox, measles, and typhus fever
Explanation: I hope you like my answer. Thank you
The Gulf Stream is an ocean current of warm water that flows from the Caribbean Sea up the eastern coast of North America before crossing over to the British Isles. The current brings warm water and air northward. Scientists are concerned that global warming will cause polar ice to melt and form a cold water current that blocks the Gulf Stream. Infer possible climatic effects resulting from substantial quantities of northern polar ice melting.
Answer:
Explanation:
Due to rise temperature leading to melting of ice more water flows to the seas from glacies and ice caps increasing the volume of water in the ocean. This has lead to increase in average global sea level between four and eight inches.
It leads to salt water intruding into freshwater this affect sources of drinking water and makes raising crops problematic.
It leads to increase in population on the coast as people moved far away from the shore due to erosion.
Please help fast! No joke answers please! Here’s the words you have to use: pure substances, physical or chemical, chemical, solutions, suspensions, & compound.
Answer:
1 is pure substances
2 is compounds
3 is solution
4 is suspension
5 is chemical (only nuclear processes can break down elements)
6 physical or chemical
sorry it took so long
Which of the following is an example of the endocrine system directly interacting with the nervous system?
A. The vertebra protect the spinal cord from injury.
B. Hormones provide feedback that affects neural processing.
C. Sensory receptors in bones send signals about body position to the brain.
D. The brain sends signals that control the speed at which food moves through the intestines.
Answer:
B
Explanation: The endocrine system secretes hormones into blood and other body fluids. Hormones provide feedback to the brain to affect neural processing. Reproductive hormones affect the development of the nervous system. The hypothalamus controls the pituitary gland and other endocrine glands.
Why is an energy pyramid smaller at the top than at the base?
A. the animals at the top are not good at hunting so there are less of them
B. The amount of energy available to top predators is greater than the amount of energy available to producers
C. The energy available to top predators decreases as you move up the pyramid so it limits the size of the predator population
D. the mass of all the predators at the top is greater than all the plants at the bottom
Answer:
a
Explanation:
is a chemical that was widely used to prevent fires, but can cause lung disease -apex
Asbestos is a chemical used to prevent fires but can cause lung disease.
What is Asbestos?Because of the fire resistance, chemical resistance, and insulating features that asbestos-containing materials (ACMs) provide at a low cost, they have been widely employed in building construction.Asbestosis is caused by breathing asbestos fibres or dust over an extended length of time. The lungs and pleura thicken and scar as a result of this (very thin tissue, or membrane, that line your lungs). Asbestosis is caused by inhaling asbestos particles in the air.Asbestosis symptomsI'm having trouble breathing.coughing for a long timewheezing.Pain in your chest or shoulder due to acute exhaustion (fatigue).Clubbed (swollen) fingertips in more advanced instances.To know more about Asbestos here
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What is it like to be a dog? Humans can answer, but I really want the opinion of someone who has experience being a dog.
Answer:
this probably isn't a real answer but if I were a dig I would love the fact I could pee anywhere
Which of the following is NOT a necessary characteristic of life?
A Must be composed of cells
B Cells must have a nucleus
C Must have some sort of metabolism
D Must require nutrients in order to live
Answer:
I would say B?
Explanation:
Sound science is based on one time occurrences true or false
Answer:
False
Explanation:
It's based on replication
Hope this helped, Have an amazing day!
In your own words, explain what the summary equation tells you about cellular respiration.
Answer:
Sugar plus oxygen reacts together into carbon dioxide, water, and energy.
Explanation:
What the RxN tells me is that we take in sugar as well as oxygen, combine them together and react, and in turn produce carbon dioxide, water, and energy.
This makes sense, because we eat food and breathe in oxygen, so those are our reactants. When we exhale, we breathe out carbon dioxide and we go use the restroom to get rid of excess H₂O. The energy produced is used for our bodily movements.
suppose your cells continue to help heal the scrape that resulted from the falling off your bike.what might happen if the cell cycle did not go into a rest phase explain.
Answer:
If the cell cycle did not go into a rest phase, what would occur would be uncontrolled cell growth. This could lead to tumor formation and cancer.
When the cell cycle fails to go into a rest phase than formation of tumor or cancer may take place.
• Generally, the cells in humans grow and proliferate to produce new cells as the body requires then. In case, when the cells become damaged or become old, they perish, and formation of novel cells takes place.
• However, the order may break, and the damaged or abnormal cells grow and proliferate when they should not, that is, the cells fails to go into the resting phase.
• These cells may give rise to formation of tumors, that is, the lumps of tissue, these tumors can be non-cancerous, that is, benign or can be cancerous, that is, malign.
Thus, the cells when failing to go into the resting phase may turn into tumors or cancerous cells.
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Explain the connection between a molecule of water and atoms.
The cell theory states that the cell is the basic unit of structure for all organisms. What smaller structure would make up the cells of all organisms?
1) Cell wall
2) Chloroplast
3) Cell membrane
4) Nucleus
Answer:
3) cell membrane
Explanation:
because this is the only one that is in both prokar y otic and euk a ryotic cells
edgen uity 2020
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3. What effect does an enzyme have on a chemical reaction
within a cell?
Answer:
Enzymes speed up the rate of a chemical reaction to help support life.But in Biochemical reactions , enzymes lower the activation energy of chemical reactions.Note ;Activation energy is the energy needed to start a chemical reactio
Explanation:
Digestive enzymes which are secreted in the acidic environment which has a low pH of the stomach help break down proteins into smaller molecules. The main digestive enzyme in the stomach is pepsin.
Enzymes accelerate the velocity of chemical reactions without consuming them or causing them to change permanently inside the cell.
What effect of enzyme on chemical reaction inside cells?
By lowering the activation energy and consequently raising the rate of reaction, enzymes (and other catalysts) work.
Since both directions must travel through the same transition state, the increased rate is the same in both the forward and reverse directions.
Cellular chemical reactions are accelerated (catalyzed) by enzymes. More precisely, they lower the barrier that must be crossed in order for the targeted reaction to occur.
By adhering to a substrate—an additional substance—they accomplish this.
Therefore, enzyme have effect on a chemical reaction within a cell.
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If an atom has the atomic mass of 14 and the atomic number of 6, how many protons, neutrons, and electrons does the atom contain?
Answer:
6 Protons 6 Electrons and 8 Neutrons
Explanation:
atomic number = number of protons
atomic mass = protons + neutrons
number of electrons = number of protons
Select all that apply.
Animals need plants for:
-oxygen
-carbon dioxide
-food
-chlorophyll
-energy
Answer:
animal need plant for food and oxygen
