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How do you think caffeine will affect the heart rate of humans
Answer:
Caffeine stimulates the heart's contractions via acting on enzymes in the heart. Caffeine can help natural hormones operate on the heart to release norepinephrine, which has a stimulating impact comparable to adrenaline.
Answer options are:
A- DECOMPOSITION
B- HUMAN EMISSIONS
C- PLANT RESPIRATION
D- PHOTOSYNTHESIS
help pls Its due in 16 hours
Answer:
what is the question? please let me know
The subscript in a molecular formula provides what information about the element?
Answer:
A molecular formula consists of the chemical symbols for the constituent elements followed by numeric subscripts describing the number of atoms of each element present in the molecule.
Explanation:
MARK MEAS BRAINLIEST PLEASE
Select the statement that is true.(1 point)
Thymine is only present in DNA, while cytosine is only present in RNA.
Thymine is only present in DNA, while cytosine is only present in RNA.
Translation copies DNA to mRNA, while transcription converts mRNA into proteins.
Translation copies DNA to mRNA, while transcription converts mRNA into proteins.
DNA has the sugar deoxyribose, while RNA has the sugar ribose.
DNA has the sugar deoxyribose, while RNA has the sugar ribose.
DNA and RNA are both double-stranded.
Answer:
1. false
2. false
3. true
4. false
Answer:
1. false
2. false
3. true
4. false
Explanation:
Fill the crossword in plssss
Answer:
Here are the answer:
Explanation:
1.Carbon dioxide
2.Glucose
3.Chlorophyll
4.oxygen
5.Photosynthesis
6.sunlight
please please help me i will give brainliest
What are the products of the light reactions used for during in the dark reactions of photosynthesis?
I WILL GIVE BRAINLY PLS HELP IN LESS THAN 5 MINUTES
A group of scientists are studying two tectonic plates. When they analyzed the data, they noticed that the two plates have been pushing against each other over the past ten years. What option below describes what will most likely occur between the two plates?
A. The plates will slowly converge causing a mountain to form.
B. The two plates will quickly transform causing the formation of a canyon.
C. The two plates will quickly diverge forming an ocean basin.
D.The two plates will slowly subduct causing an earthquake.
Answer:
A
Explanation:
Two plates pushed together create a convergent fault.
Analyze: Which can be used to identify an unknown substance: mass, melting point, density, volume, state of matter?
Answer:
all of the above
Explanation:
if we use only one of the method than we cannot find the name of that unknown substance so we need to use all the possible methods to find the actual answer and name of the substance:)
Describe how bacteria are used to produce enzymes for washing powders.
Answer:
yes exzymes are produce for power right
what’s the correct answer?
bio
Explanation:
the correct answer is Option D, drought resistance !
hope this helps you.
the chloroplast is a membrane-bound organelle that is surrounded by an outer membrane. aside from the outer membrane of the chloroplast, how many other types of membranes can be found inside the chloroplast?
Answer:
Image result for the chloroplast is a membrane-bound organelle that is surrounded by an outer membrane. aside from the outer membrane of the chloroplast, how many other types of membranes can be found inside the chloroplast?
Like mitochondria, chloroplasts are surrounded by two membranes. The outer membrane is permeable to small organic molecules, whereas the inner membrane i
Chloroplast DNA (cpDNA) in photosynthetic land plants is also a circular genome, which varies in size from about 120,000 to 247,000 nucleotides, largely because of a large inverted repeat that includes genes for the rRNA subunits.s less permeable and studded with transport proteins.
Explanation:
There are 2 other types of membranes that can be found inside the chloroplast along with the outer membrane, they are the inner membrane and a thylakoid membrane.
What is a chloroplast?Chloroplast is a cell organelle that is found in plant cells which are responsible for carrying out the process of photosynthesis inside a plant.
Along with the outer membrane, the chloroplast have an inner membrane and a thylakoid membrane.
Inner membrane- It is a lipid bilayer that surrounds the stroma, the fluid filled region of the chloroplast.Thylakoid membrane- It is a system of interconnected flattened sacs that are stacked together to form a series of interconnected compartments. They are sites of photosynthesis.These membranes play an important role in the functioning of the chloroplast, helping to compartmentalize and protect the organelle from the surrounding environment.
For more details regarding chloroplast, visit:
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how many people would it take to repopulate the earth?
Answer:
14,000,000
Explanation:
I don't know how that number is big enough T-T
Hope this helps!
Demonstration 4: Universal Solvent
Materials needed:
-1 cup of water
-1 tsp of Salt, sugar or kool aid
Most of us have mixed water with salt, sugar or kool aid before. If you have not, give it
a try.
Questions:
1. What is the solute(s) in this experiment?
What is the solvent in this experiment?
This picture of a water molecule is drawn incorrectly. How could it be corrected?
Answer:
Solutes in this experiment are salt, sugar, or kool-aid
The solvent in this experiment is the water.
Different types of 1. perform different functions. In 2. organisms cells of the same type are grouped together to perform a 3. function. Such group of cells are called 4 . A group of different tissues united to carry out a common function is called 5. Several organs that perform together for a common function make up an 6. . Different organ systems are integrated to form an 7. . The human body is made up of 8. organ systems.
Answer:
Key points
Humans—and other complex multicellular organisms—have systems of organs that work together, carrying out processes that keep us alive.
The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems.
The function of an organ system depends on the integrated activity of its organs. For instance, digestive system organs cooperate to process food.
The survival of the organism depends on the integrated activity of all the organ systems, often coordinated by the endocrine and nervous systems.
Introduction
If you were a single-celled organism and you lived in a nutrient-rich place, staying alive would be pretty straightforward. For instance, if you were an amoeba living in a pond, you could absorb nutrients straight from your environment. The oxygen you would need for metabolism could diffuse in across your cell membrane, and carbon dioxide and other wastes could diffuse out. When the time came to reproduce, you could just divide yourself in two!
However, odds are you are not an amoeba—given that you're using Khan Academy right now—and things aren’t quite so simple for big, many-celled organisms like human beings. Your complex body has over 30 trillion cells, and most of those cells aren’t in direct contact with the external environment.^1
1
start superscript, 1, end superscript A cell deep inside your body—in one of your bones, say, or in your liver—can’t get the nutrients or oxygen it needs directly from the environment.
How, then, does the body nourish its cells and keep itself running? Let's take a closer look at how the organization of your amazing body makes this possible.
Multicellular organisms need specialized systems
Most cells in large multicellular organisms don't directly exchange substances like nutrients and wastes with the external environment, instead, they are surrounded by an internal environment of extracellular fluid—literally, fluid outside of cells. The cells get oxygen and nutrients from this extracellular fluid and release waste products into it. Humans and other complex organisms have specialized systems that maintain the internal environment, keeping it steady and able to provide for the needs of the cells.
Different systems of the body carry out different functions. For example, your digestive system is responsible for taking in and processing food, while your respiratory system—working with your circulatory system—is responsible for taking up oxygen and getting rid of carbon dioxide. The muscular and skeletal systems are crucial for movement; the reproductive system handles reproduction; and the excretory system gets rid of metabolic waste.
Because of their specialization, these different systems are dependent on each other. The cells that make up the digestive, muscular, skeletal, reproductive, and excretory systems all need oxygen from the respiratory system to function, and the cells of the respiratory system—as well as all the other systems—need nutrients and must get rid of metabolic wastes. All the systems of the body work together to keep an organism up and running.
What toxin attacks nerve cells after a scorpion bites?
Identify the organism that moves with a flagellum and does not have nucleus
Answer:
Must be a bacteria, for example: Amoeba.
which compound is inorganic?
Answer:
I think b
Explanation:
Im sorry if its wrong
What is nucleus meaning
Answer:
A nucleus is a membrane-bound organelle that contains the cell's chromosomes.
answer pls
bio
will give brainliest to correct answer!!
Answer:
genome, cloning
Explanation:
Bacterial plasmids carry a genome against a specific antibiotic. The process whereby bacterial cells take up the plasmid with the resistance gene is called cloning.
Answer:
genome, gene of resistance
Explanation
bacterial plasmids may carry a genome against a specific antibiotic. the process whereby bacterial cells take up the plasmid with the resistance gene is called
gene of resistance.
hope this helps you
would this have a positive or negative effect on the body?
I WILL GIVE 50 BRAINLY POINTS AND BRAINLIEST TO BEST ANSWER!!!
Choose a scientist to research and write about from this list:
John Dalton J. J. Thomson
Marie Curie Ernest
Rutherford Henry Moseley
Niels Bohr Werner
Heisenberg Erwin Schrödinger
James Chadwick
Which scientist will you write about? Explain why you made that choice.
pt 2
When writing a scientific paper, look for the most credible sources. Science doesn’t show bias, but we humans tend to show bias. There are sites and articles that provide facts without proper scientific evidence. Avoid using information from such sites. You must be able to identify reliable sites so the data in your paper is credible.
Use sources that end in .gov (government sites), such as OSTI.gov. They are reliable sources. You can also use sites ending in .edu. They can be deemed trustworthy, but som
Answer:
I'm going to write about John Dalton because it seems interesting that he observed that water evaporates and becomes a gas that mixes with air.
Explanation:
hope this helps :)
Enzymes are type of Carbohydrates that help chemical processes happen in cells.true or false
Answer:
Enzymes are type of Carbohydrates that help chemical processes happen in cells.true or false
Saye dari Malaysia
help pls what’s the answer?
For economic purposes, which one of the following traits would be useful to genetically engineer into
the genomes of crop plants?
bio
Wala jwk lang hahahahaha
Answer:
long growth period that's the answer
This picture of a water molecule is drawn incorrectly. How could it be corrected?
Answer:
a water molecule is made up of one oxygen atom and two hydrogen atoms, the oxygen atom being in the top center and the two hydrogen atoms on either side below it.
The photograph shows a glue gun. This tool heats a solid
stick of glue until it becomes a liquid
Which physical change is shown in the photograph?
O A. Crystallizing
OB. Melting
O C. Dissolving
O D. Condensing
Answer:
melting
Explanation:
did it on edge :)
cells that secrete protein fibers in bone are called
Answer:
Osteoblasts
Explanation:
Cells that secrete protein fibres in bones are called osteoblasts.
I hope this helps.
What is the difference in the way the
body uses proteins and nuclele acids?
Answer:
Nucleic acid is an important class of macromolecules found in all cells and viruses. acid (DNA) encodes the information the cell needs to make proteins.
Explanation:
Citrus fruits, olives, and grapes would be found in the region of the
O Mediterranean
O North European Plain
O North Atlantic
O Russia
Answer:
The correct answer is Mediterranean
the most common usable form of energy in a cell is
Answer:
ATP
Explanation:
Adenosine triphosphate, or ATP, is the primary carrier of energy in cells