Explain how hydrogen fuel cells work, and why they provide a healthy, clean way to produce heat and electricity. (Site 1).
Answer:
As there are no moving parts, fuel cells operate silently and with extremely high reliability. Due to their chemistry, fuel cells are very clean. Fuel cells that use pure hydrogen fuel are completely carbon-free, with their only byproducts being electricity, heat, and water.
Answer:
As there are no moving parts, fuel cells operate silently and with extremely high reliability. Due to their chemistry, fuel cells are very clean. Fuel cells that use pure hydrogen fuel are completely carbon-free, with their only byproducts being electricity, heat, and water.
Students observed the shape of the Moon with the same amount of time between each observation. They drew this sequence.
Complete each of the 2 activities for this Task.
Activity 1 of 2
How long did it take them to record this sequence?
(Mark the one best answer.)
A.
About 2 days
B.
About 2 weeks
C.
About 2 months
D.
About 2 years
Answer:
B about 2 weeks
Explanation:
Two weeks is how long it would take to observe five moon phases. Rather that 2 months which would show two full moon cycles.
5) Which of these best describe a physical change? A) Waste products are formed. B) Biting into a piece of bread. Simple sugars in the small intestine are broken down into glucose. D) Saliva in the mouth breaks the bread into smaller molecules like maltose.
Answer: Biting into a piece of bread
Explanation:
Answer:
B Biting into a peace of bread
Explanation:
I took the test and as well. the first physical thing that changes whenever any type of food goes into your mouth is the way it breaks apart/turns into a smaller part of the food so that your esaphgous can swallow it. Hope this helped :)
(20 points) {brainliest} PLEASE HELP MEEEE <33333
Which company was given permission by the US Supreme Court to patent genetically modified organisms in 1980?
A. Ford Motor Company
B. General Electric
C. Dow Chemical
D. Genentech
Answer: B. General Electric
Explanation:
I hope this helps if you still needed the answer.
Answer:
B. General Electric
Explanation:
PENN
Which of the following does not directly cause erosion?
O Ice
OLichen
ОSun light
oChemicals
Answer:
a ice
Explanation:
ice doesnt cause erosion directly
True or false?
It takes too much time for oxygen to get into cell and carbon dioxide out if cells are too large.
Answer:
false....
Explanation:
hopes this helps
Answer:
false
Explanation:
It doesn't take too much time for oxygen to get into cell and carbon dioxide out if cells are too large.
the earth’s_______and position relative to the________effects the lengths of_________and________.
*not multiple choice*
i need it asap. thanks!
distance
sun
day
night
The Earth's distance and position relative to the sun effects the lengths of day and night.
what gives animal cells their shape and structure?
Answer: Animal cell's shape and structure are determined by the cytoskeleton.
What is the cytoskeleton?
The cytoskeleton is present in all animal cells, prokaryotic (bacterial) cells contain a very rudimentary version of it, while plant cells do not have one at all. It consists of several types of large molecules that provide physical support to the cell as well as internal transport along its length for organelles like endoplasmic reticulum (ER), mitochondria, vacuoles, etc. The three main components are microtubules, intermediate filaments and microfilaments which give rise to different structures within the cell. Microtubules are long cylindrical tubes made up of two protein subunits (alpha and beta tubulin) that form a hollow tube. These are the main components of the cytoskeleton, they provide support to the cell while also having transport capacity for organelles like endoplasmic reticulum (ER), mitochondria, vacuoles, etc. Microtubules are dynamic structures which means their state is constantly changing i.e., growing, shrinking or moving around depending on requirements of the cell.
are genes for green seeds similar to yellow genes? Explain your answer.
Answer:
Explanation:
There is no “yellow” gene in the peas found on farms. ... Mendel's experiments showed that green is the recessive seed color in pea plants.
Since yellow is dominant to green, all of the offspring were yellow.
Biology questionnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
Answer:
3rd one
Explanation:
Answer:
c. firewood
Explanation:
its a chemical reaction
The most extreme state of __________________ is a life-threatening condition called thyroid storm, in which enormously excessive quantities of thyroid hormones are released into the bloodstream.
Answer:
thyrotoxicosis
Explanation:
If there is oxygen around, how will muscle cells make ATP?
Answer:
Muscle cells can continue to produce ATP when oxygen runs low using lactic acid fermentation. ... Many yeast use alcoholic fermentation to produce ethanol
19. Engineer It In some rivers and lakes, dams
are constructed to harvest energy by converting the
kinetic energy of moving water into electrical energy.
Water from behind the dam flows through a turbine
that transforms kinetic energy into mechanical
energy. The turbine turns a generator that converts
mechanical energy into electrical energy.
The water from behind the dam could flow to the
turbine either through an opening near the middle or
top of the dam or by flowing over the top of the dam.
Which type of water flow would be the best design for
sending a consistent flow of water past the turbines?
Explain your reasoning.
Answer:
A hydroelectric dam converts the potential energy stored in a water reservoir behind a dam to mechanical energy—mechanical energy is also known as kinetic energy. As the water flows down through the dam its kinetic energy is used to turn a turbine.
Explanation:
Why must the number and type of atoms be the same in the products of a chemical reaction as in the reactants?
You observe a yellow zone surrounding growth on mannitol salt agar. What does this indicate about the organism
Answer:
The organism is able to ferment mannitol.
Explanation:
ANSWER ASAP FOR BRAINLIEST!!!!
True/False. All mutations are bad.
False.
There are several good mutations that have ensured the survival of species. Typically helpful mutations help the creature adapt to its environment or protect itself from predators.
I hope this helps! :)
PLEASE HELP ME IM TIMED!
Answer:
protein i believe
Explanation:
how will you explain the importance of it in completeness of the biological organization?
The importance of biological organization is that it allows the study of natural balance between all organisms in a simple way.
The biological organization is a biological term that refers to the hierarchy of complex biological structures and systems that define life through a reductionist approach.
In this form of organization, the traditional hierarchy begins in the atom, this being the lowest level, and ends in the biosphere as a superior system.
The integrality of this organization focuses on the reciprocal relationships between each level, because the higher levels are more complex, but contain each of the organisms and parts that make up the lower levels. This type of organization must be understood as a whole.
Learn more in: https://brainly.com/question/6070269
label the diagram below of the root cross section
Plzzzzz help ASAP
The labeling of the root cell is as follow:
The outer red part is the Epidermis. The inner white part is the Cortex. The innermost pink part is the Xylem.Parts of a Root Epidermis - protects the tissues. Cortex - allows for transportation of materials. Xylem - allows for transportation of water.In conclusion, the root is quite complex and has various parts to allow it fulfil its functions in keeping the plant alive.
Find out more about the xylem at https://brainly.com/question/14197052.
The __________ __________ of the midbrain receive auditory input and trigger the head-turning auditory reflex.
Answer:inferior colliculi
Explanation:
what are thallophytic plants?
Answer:
Thallophytes are a polyphyletic group of non-motile organisms traditionally described as "thalloid plants", "relatively simple plants" or "lower plants". They form an abandoned division of kingdom Plantae that include lichens and algae and occasionally bryophytes, bacteria and slime moulds.
Explanation:
gamsahamnida
Answer:
Thallophytic plants are plants of a group of plants or plant organisms (such as algae and fungi) that lack differentiated stems, leaves, and roots.
Explanation:
Hope this helped :>
Enzymes transferring electrons at the start of the ETS are referred to as ________, whereas enzymes transferring electrons to the terminal electron acceptor are designated as ________.Question 40 options:a) sulfatases; nitrogenasesb) lyases; hydrolasesc) permeases; proton pumpsd) dehydrogenases; oxidasese) oxidases; dehydrogenases
Answer:
dehydrogenases; oxidases
Explanation:
Explain how the surface area and volume of a cell are related to molecule transport through the cell membrane.
Think about filling a small room and a large room with people. Which room takes less time to fill?
Answer:
Explanation:
I really wish to help but if you need help with that question it can be found on the internet
Photosynthesis takes place in two separate but dependent series of steps:
First, the light dependent reactions and then the light independent reactions.The light independent reactions (AKA the dark reaction/Calvin cycle) of photosynthesis occurs:
A.Only in the dark in plants
B.In the light and dark in plants
C.Only in the light in plants
D.None of the above
Answer:
Your answer wold be B: In the light and dark in plants
Explanation:
In the light and dark in plants is the correct answer
The option (B) is correct. In the light and dark in plants.
What do you mean by photosynthesis?Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities.
Moreover, photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities.
Hence, the primary function of photosynthesis is to convert solar energy into chemical energy and then store that chemical energy for future use. For the most part, the planet's living systems are powered by this process. It's not particularly efficient by human engineering standards, but it does the job.
Learn more about photosynthesis:
https://brainly.com/question/1388366
#SPJ2
which statement is a feature of both prokaryotic and eukaryotic genes?
Answer:
DNA‑binding proteins influence the ability of RNA polymerase to initiate transcription of a gene
Explanation:
cultivation of plant populations of a single species
How can we conserve WATER? describe in short.
Please answer as soon as possible pls I need help please
Explanation:
Turn off the faucet while brushing your teeth.
Only run the washing machine and dishwasher when you have a full load.
Use a low flow shower head and faucet aerators.
Fix leaks.
Install a dual flush or low flow toilet or put a conversion kit on your existing toilet.
1- List the 3 functions of the Digestive System
2- list the 2 function of the exretory system
3- describe the path of food,beginning in the mouth
4- describe the path of urine formation begginning in the kidneys
5- how does the urinary system maintain homeostasis
Answer:
1. transportation, digestion, and absorption of food.
2. Remove and concentrate waste products from body fluids and return other substances to body fluids
3. Food starts to move through your GI tract when you eat. When you swallow, your tongue pushes the food into your throat.
4. Urine then flows through the nephrons, through a system of converging tubules called collecting ducts.
5. filtering out excess fluid and other substances from the bloodstream and secreting waste.
list down at least 5 kitchen tools and utensils.identify it's material (10)pts
Answer:
Chef's Knife. I'm not just talking about any old chef's knife, I mean a good-quality one. ...Mixing Bowls. Mixing bowls are like your kitchen's hands. ...Cutting Boards. A kitchen is not complete without cutting boards. ...Wooden Spoon & Spatula. ...Measuring Cups and Spoons.