Which elements do hydrogen fuel cells combine to produce electricity?
A. hydrogen and oxygen
B. hydrogen and carbon
C. hydrogen, oxygen, and nitrogen
D. hydrogen, carbon, and nitrogen
PLEASE HELP

Answers

Answer 1
NaCl makes electronic stuff
Answer 2

Answer:

A) hydrogen and oxygen

they produce fuel cells because they form water which can be used to form electricity and are used in car batteries and stored for later use


Related Questions

6. What is the purpose of mitosis?


a. It guarantees that each daughter cell has half the amount of DNA of parent cells

b. It ensures that new nuclei have an exact copy of DNA

c. It ensure the reproduction of mitochondria and chloroplasts

d. It prevents the occurrence of cancer cells

Answers

Answer:Two genetically identical daughter cells with the same chromosome number as the parent cell.

please help me on this and explain your answer

Answers

Answer:

B . 4

Explanation:

7is neutral, 11 to 7 is 4

4.Water molecules when frozen, the atoms in the molecules are said to contract and not moveRequired to answer. Single choice.
(20 Points)
false
true

Answers

Yes , when water molecule froze the atoms in the molecules are said to contract and not move required

Answer:

true

Explanation:

I will.mark.brainliest

Answers

what the first answer said

HELP MEEEEEEEEEEEE


what are the two samples of DNA that are needed in order to identify the DNA as belonging to a specific person

Answers

Answer:

most common samples used today Blood and Hair

Answer: A known and Unknown sample of DNA is needed.

Explanation: The known sample of DNA is the sample that has the person that is suspected to be related to the unknown sample, which is the sample that is from an unknown source.

The diagram below represents part of a process that occurs in cells. Which process is represented?

Answers

The process in cells represented by the diagram would be translation or protein synthesis.

The translation is a process in cell biology during which the genetic codes in messenger RNA are decoded into their respective amino acids and linked together by peptide bonds. The process usually takes place in the ribosome of eukaryotic cells.

During translation, the genetic codes on mRNA are read and the amino acid corresponding to each code is released. The small ribosomal unit first binds to the mRNA at the beginning. Thereafter, the tRNA binds to the start codon on the mRNA before the binding of the large ribosomal subunit to complete the initiation complex.

More on the translation process can be found here:  https://brainly.com/question/4013387

what kind of display would be the best represent the data below

Answers

Answer:

alwasy image positive.

Explanation:

be positive

how did wegner use climate evidence to support his hypothesis​

Answers

Explanation:

Wegener used evidence of climate change to support his hypothesis. As a continent moves toward the equator, its climate becomes warmer. As a continent moves toward the poles, its climate becomes colder. But the continent carries with it the fossils and rocks that formed at its previous locations.

◘HURRY PLEASE◘
↓↓↓↓↓↓↓↓↓↓↓↓↓↓

Answers

Answer:

nulicuc acidis

Explanation:

ridding the cell of material by discharging it from sacs at the cell surface is called

pinocytosis
phagocytosis
exocytosis
endocytosis​

Answers

The third one? Or the second one?
Exocytosis
Tahts the answer

i’m terrible at this help me out please !!& tysm if you do !!

Answers

Answer:

Explanation:

Within all biological communities, energy at each trophic level is lost in the form of heat (as much as 80 to 90 percent), as organisms expend energy for metabolic processes such as staying warm and digesting food (see biosphere: The organism and the environment: Resources of the biosphere: The flow of energy).

Help please! DNA Assignment

Instructions: For this assignment, you will replicate DNA to make a complimentary strand of DNA. Then transcribe the complimentary DNA sequence into mRNA. Next, translate the mRNA molecule into the codes for specific amino acids using the amino acid chart on the last page. Lastly, address the reflection questions.


DNA Replication:
Replicate the following strand of DNA:
Original
DNA
A
T
G
A
A
C
C
A
T
T
C
A
G
T
A
T
G
G
Complimentary DNA





































Transcription:
Transcribe the DNA to make an mRNA molecule
Complimentary DNA





































mRNA Molecule





































Translation:
Translate the mRNA into the corresponding amino acids.
mRNA Molecule




































Amino Acid














Using the DNA sequence provided, determine the amino acids.
Original
DNA
A
T
G
G
G
T
C
T
A
G
C
G
A
A
A
G
A
T
Complimentary DNA




































mRNA Molecule




































Amino Acid












Questions:
Using what you have learned in the lesson and the experiment, answer the following questions in complete sentences.
What is the function of mRNA?
What is the function on tRNA?
Describe what happens during transcription.
Describe what happens during translation.
Explain how DNA is used to make a protein.

Answers

Answer:

DNA Replication:

Replicate the following strand of DNA:

Original DNA: A T G A A C CA T T C A G T A T G G

Complementary DNA:

Remember that the complimentary base pairs in DNA are Adenine-Thymine and Guanine-Cytosine, or A-T and G-C. This means that if the original sequence is:

A T G A A C C A T T C A G T A T G G

Then the compliment is (replace with the opposite base pairs):

T A C T T G G T A A G T C A T A C C

Transcription:

Transcribe the DNA to make an mRNA molecule

COMPLIMENTARY DNA:

mRNA Molecule:

So if our complimentary DNA (antisense stand) is T A C T T G G T A A G T C A T A C C then to transcribe, we basically create another complimentary strand, but for mRNA, we use Uracil instead of Thymine:

A U G A A C C A U U C A G U A U G G  

Translation:

Translate the mRNA into the corresponding amino acids.

mRNA MOLECULE:

AMINO ACID:

Using the DNA sequence provided, determine the amino acids.

Next, take each codon (3-base set) to the table and record the corresponding protein:

A U G = Methionine (start)

A A C = Asparagine

C A U = Histidine

U C A = Serine

G U A = Valine

U G G = Tryptophan

ORIGINAL DNA: A T G G G T C T A G C G A A A G A T

Complementary DNA:

mRNA DNA Molecule:

Amino Acid:

And we do it all again:

A T G G G T C T A G C G A A A G A T = original DNA

T A C C C A G A T C G C T T T C T A = complementry DNA

A U G G G U C U A G C G A A A G A U = mRNA

A U G = Methionine (start)

G G U = Glysine

C U A = Leucine

G C G = Alanine

A A A = Lysine

G A U = Aspartate

Explanation:

Are porcupines amphibians, reptiles, or birds??? Please help 25 POINTS!!!

Answers

Answer:

rodents

Explanation:

they arent any of those things

what three things are used to make glucose in photosynthesis?

Answers

Answer:

carbon dioxide, water, sunlight

Explanation:

four steel bricks were heated to different temps. and stacked together a shown . In which direction would the heat be transferred?

Answers

Answer:

from sample 3 to sample 2

Explanation:

Natasha is looking for a material to make tires for a new jogging stroller she designed. Which would be best suited to her product?

Answers

Answer:

vulcanized rubber

Explanation:

The best material for this purpose is vulcanized rubber. Jogging strollers have wider bases and larger wheels to stabilize them, and these wheels must be durable in order to withstand the stresses introduced during the high speed movement.

Answer:

Vulcanized rubber

Explanation:

Just took the test and go it right

Describe what would happen to the pyruvate molecules formed under anaerobic
conditions in human muscle. Please someone help, also this is 3 marks

Answers

Answer:

Under anaerobic conditions, what happens to pyruvate is its conversion to lactate to help keep glycolysis chugging along upstream.

When Alfred Wegener first noticed that the continents fit together like puzzle pieces, this was

Answers

Answer:

- the discovery of the Pangaea Theory.

In 1912 Alfred Wegener (1880-1930) proposed that the continents were once compressed into a single protocontinent which he called Pangaea (meaning "all lands"), and over time they have drifted apart into their current distribution.

The east coast of South America and the west coast of Africa seem to fit together like pieces of a jigsaw puzzle, and Wegener discovered their rock layers “fit” just as clearly. South America and Africa were not the only continents with similar geology. Most all of the other continents fit together too.

Answer:

discovery of the Pangaea Theory.

Explanation:

Trace gases in the atmosphere are not as abundant as nitrogen or oxygen are. However, they play a part in making Earth's atmosphere one in
which life can live. What do trace gases do in Earth's atmosphere?
O A. create the greenhouse effect by adding additional carbon dioxide
OB. allow water vapor to remain in the atmosphere
C. trap solar energy before it escapes to help Insulate Earth
D. Suspend smoke and small particles in the atmosphere

Answers

Answer:

the answer is C: trap solar energy before it escapes to help insulate earth

Explanation:

HELP

5. __________________ is a structure containing seeds ,which develops from

an ovary after fertilization.

A. Fruit

B. Ovule

C. Anther

6. The female part of the flower is known as __________________

A. Stamen

B. Anther

C. Carpel

7. Through which structure pollen tube grows?

A. Style

B. Ovary

C. Stigma

8. A plant that does not have enough __________________ will not grow

well.

A. Nitrate

B. Magnesium

C. both

9. __________________ are the reproductive organ of plants.

A. Roots

B. Leaves

C. Flowers.

10. In the flower the female gamete are inside __________________.

A. Stamen.

B. Ovules.

C. Anther
IT 30 MARKS

Answers

Answer:

5_fruit.

6_carpel

7_stigma

8_Magnesium

9_Roots

10_Ovules.

i will mark brainliest please help

Answers

Answer:

organs working together to maintain hompostasis

In humans, oxygen and carbon dioxide are exchanged between the alveoli in the lungs and the blood in the circulatory system. Which of the following processes allows for the exchange of these gases in the human body?

osmosis


simple diffusion


active transport


facilitated diffusion

Answers

Answer:

Simple diffussion

Explanation:

It is simple diffussion because it is the movement of gases or molecules of substance from a region of higher concentration to a region of lower concentration without using energy. Through this process gases are exchange between the alveoli of lungs and blood of the circulatory system. Carbon diffuses from tissues to lungs and oxygen diffuses from lungs to Tissues.

Answer:

diffusion

Explanation:

PLEASE HELP ME I AM SO TIRED OF THIS

Answers

Answer:

Explanation:

Cytoplasm H

Lysosome E

Mitochondria F

Centriole A

Endoplasmic Reticulum G

Vacuole M

Cell Membrane D

Nucleus J

Ribosome L

Nuclear membrane C

Golgi Apperatus B

Vesicle K

Nucleus I

I hope this helps, Have a good day :)

Where is the DNA of a virus located?
A. the spindle fibers

B. the tail

C. the stem

D. the head

Answers

Answer:

D

Explanation:

The answer is D)

Explanation: the dna of a virus is located in the nucleus which is located where you would call the head

Please help !!

Can anyone solve this xx

Answers

Answer:

=54 (2s.f.)

Explanation:

if cardiac output = stroke volume x heart rate

then stroke volume = cardiac output/heart rate

2800/52=53.8461...

To make sure you are on the right track, use this question to describe how

you plotted a few of the coordinates you made on your map. There are

three red dots and three blue dots. Indicate which color of dot matches

the numbered coordinate.

Longitude Latitude

Longitude Latitude

E1 120°W

40°N

V1 150°W

60°N

5°S

V2 70°W

35°S

E2 110°E

E3 77°W

4°S

V3 120°W

45°N

wwww

E E SE

32

3

4

6

5

Answers

Answer:

[tex]533 {3 { \div {3.. = 246}^{2} {2 {33y2}24^{?2 {246 {?3}^{?34} ?3}^{?y} } }^{?} \times \frac{?}{3} }^{?} }^{?} [/tex]

Did I get this right?

The equation for photosynthesis is CO2+H2O+Sunlight..... C6H1206O2

Please correct me if I'm wrong

Answers

Answer:

yea u good

Explanation:

Answer:

yep its correct!!

What’s the definition of polyunsaturated fats

Answers

Answer:

Polyunsaturated fat is a type of dietary fat.It is one of the healthy fats,along with monousaturate fat. Polyunsaturated fat is found in plant and animal foods such as salmon,vegetable oils,and some nuts and seeds

Polyunsaturated fats are a type of healthy fat that includes omega-3 and omega-6 fatty acids, which are essential for brain function. You must obtain them from food, as your body cannot make them.


Can I get brainliest please

Use the word MAGMATISM as an acronym. Use each letter to represent
word/s that is related to the lesson.
M
A
G
M
A
T
I
S
M

Answers

Answer: See explanation

Explanation:

When volcanic eruptions occur, there are a lot of magma i.e. molten rocks that are formed under the volcano. This formation of the magma and their movement is referred to as magmatism. The magmatic process has an impact on the way magma melts.

Magmatism can be used as an acronym in the following way:

M - Molten

A - Assimilation

G - Geology

M - Mountain

A - Active volcano

T - Tectonics

I - Igneous

S - Seismograph

M - Melting

in one sense the animal classification system above the species level is artiffical. In another sense, however, it is real explain the paradox

Answers

Answer:

Yes it does

Explanation:

thank you

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