Answer:
So that the heart can pump oxygen to our brain and to our entire body. Blood also has nutrients that helps our body keep on working. White blood cells help fight diseases and infections that are harmful to the human
Explanation:
A student is investigating how substrate concentration affects the rate of an enzyme catalyzed reaction. Which three variables should be kept constant in the
setup of the student's investigation?
A temperature of the reaction
B. amount of enzyme
Camount of substrate
D. amount of product
E pH of the reaction
Answer:
A. temperature of the reaction
B. amount of enzyme
E. pH of the reaction
Explanation:
To test various theories, experiments are typically conducted under a number of different conditions. Several variables must be established when planning studies to ensure reproducibility, precision, and validity of findings.
For example, while controls are held constant, different independent variables are strictly altered and analyzed - this ensures validity and may show whether external factors affected the experiment.
In this experiment, the rate of the reaction is the dependent variable. Thus all factors that may influence the final result, such as the temperature, pH, and enzyme concentration should be kept constant.
These factors can increase the reaction rate by altering the configuration of the enzymes, providing more collision energy, and increasing the collisions between and ratio of reactants. Increasing the concentration is expected to increase the frequency of collisions between reactants and thus speed up the rate.
The three variables that should be kept constant in the setup of the student's investigation:
temperature of the reactionpH of the reactionamount of enzymeCONSTANT VARIABLE:
In an experiment, a constant variable is that variable that must be kept constant or unchanged in order not to affect the outcome of the experiment. Constant variable is also called control variable. In this experiment, a student is investigating how substrate concentration affects the rate of an enzyme catalyzed reaction.The constant variable i.e. the variable that the student should keep constant are as follows:temperature of the reactionpH of the reactionamount of enzymeKeeping these variables above constant means not allowing temperature, pH or amount of the enzyme interfere with the experimental outcome.Learn more at: https://brainly.com/question/474060?referrer=searchResults
Please help I really would appreciate it
Answer:
Light, electric
Explanation:
Some people believe that the greatest environmental concern is the growing world population. Which
country has imposed regulations on the number of children allowed per couple due to its concerns over
increasing population?
A) India
B) Japan
C) Russia
D) China
I need help wiith this quetions
Answer:
hi
Explanation:
An Enzyme
Answer:
Enzyme
Explanation:
The digestion of carbohydrates results in...
a. Simple Sugars (glucose)
b. Amino Acids
c. Proteins
d. Enzymes
Answer:
A
Explanation:
The end result of carbohydrate digestion is the production of a small selection of monosaccharides (Glucose, Galactose, or Fructose) which can be transported past the small intestine epithelium.
The Domain Archaea contains which of the following Kingdoms?
a. Fungi
b. Eubacteria
c. Protista
d. Archaebacteria
Systems theory exercise label the components of systems theory
Answer:
Explanation:
Hope this helps!
Several groups of students were comparing the processes of mitosis and meiosis. Each group came up with a different answer for how the two processes are different. Which of the groups made a statement about mitosis and meiosis that is most correct?
A). Group 1, they said that mitosis is involved in the growth and repair of cells and undergoes cell division twice, while meiosis is involved in sexual reproduction and undergoes cell division once.
B). Group 2, they said that mitosis is involved in the growth and repair of cells and undergoes cell division once, while meiosis is involved in sexual reproduction and undergoes cell division twice.
C). Group 3, they said that mitosis is involved in sexual reproduction and undergoes cell division twice, while meiosis is involved in the growth and repair of cells and undergoes cell division once.
D). Group 4, they said that mitosis is involved in sexual reproduction and undergoes cell division once, while meiosis is involved in the growth and repair of cells and undergoes cell division twice.
Answer:
B)
Explanation:
Several groups of students were comparing the processes of mitosis and meiosis. Each group came up with a different answer for how the two processes are different.
Mitosis- growth and repair one cell division 2 genetically identical diploid cells
Meiosis- produce gametes, two cell division, 4 genetically different haploid cells
Hope this helps :)
The group that is correct regarding mitosis and meiosis is group 2 as they said that mitosis is involved in the growth and repair of cells and undergoes cell division once, while meiosis is involved in reproduction through fusion of gametes and undergoes cell division twice. The correct option is B.
What is cell division?Type of cell division by which a parent cell divides into two or more daughter cells when a parent cell divides into two or more daughter cells. Cell division is typically part of a larger cell cycle.
Cell division occurs in two stages namely mitosis and meiosis. When most people say cell division, they're referring to mitosis, the method by which new body cells are formed.
Meiosis is the process by which egg and sperm cells are formed. Mitosis is a necessary process for life.
The group 2 is stating the same that mitosis is the division for growth and repair and is done in only once, and meiosis is the process of gamete formation and occurs twice.
Thus, the correct option is B.
For more details regarding cell division, visit:
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What is the main cause of competition between two species?
Answer: Overlap in niches-
Explanation:
May you do these really quick please ?! (English is my second language so it's hard to understand some lessons)
please help ASAP will mark brainliest
Answer:low turgor pressure
Explanation:
There are usually ethical concerns when the topic of biotechnology is discussed. The use of Henrietta Lacks
cancerous cells from her cervix is one of the first cases of what is and what is not ethical when it comes to
using human tissue for research
What was the greatest ethical concern in regards to the researchers obtaining and using Hela cells for
research?
Answer: The Testing of family members when researchers found HeLa cells has contaminated other specimen.
Explanation:
How do you think the movements of electrons and ions in the light-dependent reactions help transform energy?
Answer:
b
Explanation:
write in brief:
2) Describe vegetative reproduction through
gemma in Marchantia
Which of the following situations involves an external attribution?
A. Desiree believes she did well on the exam because she is intelligent.
B. Thomas believes he did well on the exam because he knows a lot about math.
C. Nick believes he did well on the exam because the exam was easy.
D. Cassidy believes she did well on the exam because she tried very hard.
Answer: C. Nick believes he did well on the exam because the exam was easy.
Explanation:
Nick is relating his performance on the exam to an external factor (the difficulty of the exam being easy).
All the other answers are relating the exam to internal factors such as intelligence, personal knowledge, and effort.
Answer:
C.
Explanation:
right on edg:))
Large brown algae typically found well below the surface of the water:
a. Seagrasses
b. Kelp
c. Coral
d. Ulva
Answer:
C
Explanation:
Hopefully this helps.
Answer:kelp
Explanation:
A polymer formed from this molecule
a.
protein
c.
carbohydrate
b.
lipid
d.
nucleic acid
Answer:
Nucleic acid is answer
3. The diagram shows a section through a mesophyll cell of a leaf
Which part is partially permeable?
A-
0
B-
D
2 Page
Answer:
B- the cell membrane
Explanation:
Cell membranes are made up of lipids, proteins and cholesterol. These make up a selectively permeable layer that only allows for the movement of few molecules across the cell surface.
The lipid layer only allows for the passage of small non-polar molecules, while larger molecules require transport proteins to ferry other substances into the cell.
Structure X of a cell is missing. This results in the lack of molecular warehousing and processing station. Transport vesicles from the ER are wandering around aimlessly. Structure X is likely the
Answer:
Nucleus.
The nucleus is like the brain of the cell that holds the DNA. That DNA tells the cell what to do, and without it it doesn’t have instructions.
Hi also if you don’t mind please mark brainliest I’m trying to rank up :)
Will give brainest!!!!
Why do we perceive reversible figures?
a) The retina in the eye is influenced by the brain's cortex to interchange shapes and images.
b) Our brains cannot decide on just one interpretation of a picture.
c) Our brains play tricks on us when we consume too much caffeine.
d) Sensory information comes in too fast for us to target just one figure.
Answer:
C
Explanation:
PLZ MARK ME AS BRAINLIEST
Answer:
b) Our brains cannot decide on just one interpretation of a picture.
What is one way that language relates to culture? * Language hinders people from understanding their culture. Language separates the culture of humans from that of animals. Language enables culture to be transmitted from one generation to the next. Language keeps each culture separate from all other cultures.
C. Language enables culture to be transmitted from one generation to the next.
:]
Can someone help with this. 15 points.
Answer:
I think that it is A
Explanation:
since the farther the galaxy, the greater the red shift, the faster that galaxy is moving away from us.
Hope this helps
3) A planet is pulling on an object with a mass of 500 kg and creating a
force of 72,000 N what is the gravity of the planet?
(For science)
Answer:
72000 N /500=?
Explanation:
F=72000
m=500
g=?
F=mg
g=F/m
72000N/500kg= 144 ms^-2
Which of the following is not a characteristic of rivers and streams
Salt water
Explanation:
Answer: It's salt water
Explanation: hope it helps ^w^
11. Tom broke his leg. He was in a cast for six weeks. After his cast was
removed he had a hard time walking - WHY? *
Answer:
what-
Explanation:
Answer:
Well, the reason is because those muscles that he was once using every day, were suddenly on break and were not being used for the entire 6 weeks. Leading him to having some trouble walking.
Explanation:
When you don't use your muscles, they start to kind of chill out and get weaker in this case. So when you break your leg, and the doctor tells you not to put pressure on it, it is so that the bone can heal. But while your bone heals, the muscles in your leg are not able to move or do very much of anything because you can't put any pressure on them. So that is why when you take the cast off, you have to ease back into the regular motion in your leg that you had before.
Hope this helps!
What characteristic of life is not directly related to the study of population growth?
A) Ability to adapt to the surrounding environment
B) Ability to absorb sunlight to stay warm
C) Ability to respond to a stimulus
D) Ability to reproduce
Answer:
B
Explanation:
Ability to absorb sunlight to stay warm
Identifica, para cada receptor ,el tipo de estimulo al cual responde mecanorreceptores , fotorreceptores ,quimiorreceptores ,termorreceptores, nociceptores
Answer:
noloce
Explanation:
nesesito puntos perdon
Which statement best describes the trend shown in
this graph?
Answer: as the highlight tax rate was reduced in the 1920s, the economy grew .
Explanation:just took the test . Thank me later
Since invasive species did not co-evolve with the other species in the ecosystem where they were introduced _______. a. they can unbalance the ecosystem b. they are considered a serious environmental problem c. they lack natural predators to help control their population d. all of the above i will give brainliest
Answer:
The Answer is All of the above.
Explanation:
Hope this helps:)
Since invasive species did not co-evolve with the other species in the ecosystem where they were introduced they lack natural predators to help control their population. Thus, option D is correct.
What is Invasive species?Invasive species can be defined the species that are introduced intentionally or unintentionally in an environment. These species might adopt the environment in which they are placed or might not get involved in the environment.
Invasive species often unbalance in the ecosystem because they did not co-evolve and fit into the ecosystem as they are not controlled by the natural control like predators. This creates ecological imbalance.
An invasive species is a species that not belongs to that land where they are living and was introduced to that ecosystem naturally or deliberately to cause harm to that system as Invasive species have tendency to spread to a degree believed to cause damage to the environment, human economy or human health.
Therefore, Since invasive species did not co-evolve with the other species in the ecosystem where they were introduced they lack natural predators to help control their population. Thus, option D is correct.
Learn more about ecosystem on:
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Identify the model that best represents the plasma membrane of a hypothetical cell that exists in a nonaqueous environment and whose eytosol is similar to that of an animal cell. Provide TWO pieces of reasoning to support your identification.
Answer:
The models are missing in the question. The models along with the question is provided in the attachment below.
The answer is : Model A represents the Plasma membrane.
Explanation:
According to the question, model A represents the plasma membrane. The reasons are :
(a). In the model A, the bilayers consists of two leaflets of the amphipathic lipid molecules. Here the polar head groups is in contact with the intra cellular or the extra cellular non aqueous phase, where the non polar tails are facing each other constituting the hydrophobic interior of the membrane.
(b). Lipid are not rigid as well as static structure. In the lipid bilayer, the lipid molecule are able to rotate around their axis freely and diffuse laterally with each leaflet.
(c). The plasma membrane acts as the selective plasma membrane.