In active transport, molecules are pumped through the cell membrane in opposition to a concentration gradient (energy). Without the use of ATP, molecules are transported via concentration gradients by moving within and across the cell membrane in passive transport (energy).
What distinguishes active transport from passive forms of movement like osmosis and diffusion?There are two main strategies for moving molecules across a membrane, and the difference is based on whether or not cell energy is utilised. Diffusion is an example of a passive mechanism that doesn't require any energy, whereas active transport does.
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What makes Kingdom Protista unique compared to the other kingdoms?
what is the role of PCR in DNA typing
Answer:
Polymerase chain reaction, or PCR, is a laboratory technique used to make multiple copies of a segment of DNA. PCR is very precise and can be used to amplify, or copy, a specific DNA target from a mixture of DNA molecules.
Explanation:
Which of the following virulence factors would most likely produce an organism that can hide within the host cell,
growing intracellularly?
A)invasins (Type 3 secretion system)
B)capsule
C)IgA protease
D)Opa protein
In the Arctic, seals are one of the main sources of food for polar bears. As global warming melts polar ice, fewer seals can be found in the Arctic. As a result, polar bears will —
A. maintain a constant population.
B. decrease in number.
C. migrate to tropical regions.
D. increase in number.
Decrease in numbers, because of their lack of a food source.
Answer:
Decrease in number.
Explanation:
They have less food and they will not be able to survive without food.
Creates unique set of DNA.
Does Mitosis or meiosis? Or both
Answer:
Meiosis
Explanation:
Mitosis creates an identical set of daughter cells to the parent cells through asexual reproduction but meiosis creates a set of sex cells that are identical to each other but not to the parent cell and this is through sexual reproduction.
Food is useful to organisms because it contains ? Radiant energy, thermal energy, motion energy, chemical energy
Answer:
Chemical energy
Explanation:
Because food passes through chemical reactions. eg. digestion of food is a chemical reaction
Which of the following does the human digestive system break down for the body's cells to use for energy, repair, and growth?
Answer:
pretty sure it's proteins but correct me if I'm wrong
Explanation:
PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!
Answer: C
Explanation:
Nora owns a dog. The dog seems to be lethargic, so she takes her pet to a veterinarian. The veterinarian checks the dog’s heart rate and finds it to be 90 beats per minute. He checks the dog’s temperature and finds it to be 70 degrees Fahrenheit. What conclusion can be drawn about the dog’s condition? A. The pulse and temperature are both normal. B. The pulse is normal, but the temperature is below normal. C. The pulse is normal, but the temperature is above normal. D. The pulse is above normal and temperature is below normal. E. The pulse is below normal, but the temperature is above normal.
Which organism described below makes its own food?
yoo yoo ill rlly apriciate if someone helps me
In what phase does the water molecules have greater freedom of movement.
On the graphs, the dashed line represents the original population, and the solid line represents the population after natural selection has taken place. A population of snails is going through disruptive selection as it relates to their shell patterns. Which graph represents the population? A B C D
About the question: You will find the graphs in the attached files
Answer:
Graph C is the one that represents the snail population after disruptive selection.
Explanation:
Due to technical problems, you will find the complete explanation in the attached files.
Answer:
C
Explanation:
I took the test
I need help with this problem please the sooner, the better. Thanks
Answer:
1=3
2=8
3=11
4=55
Explanation:
Name the 2 types of muscle
Answer:
The two types of skeletal muscle fibers are slow-twitch (type I) and fast-twitch (type II). Slow-twitch muscle fibers support long distance endurance activities like marathon running, while fast-twitch muscle fibers support quick, powerful movements such as sprinting or weightlifting.
Explanation:
hope this helps :)
*fast-twitch muscle
*slow-twitch muscle
*skeletal muscle
(I know you said 2 so I’m sorry for doing 3 but yeah-)
Two students compare and contrast the composition of a plant and animals cells. Several observations are made during the investigation. Which observation is incorrect?
Plant and animal cell contain cell membranes.
Plant cell are contained within cell walls, while animal cells are not.
Plant and animal cells contain a nucleus.
Plant cell do not have cytoplasm.
Answer:
I believe the correct answer would be D- Plant cell do not have cytoplasm
Explanation:
Plant and animal cells both have a cytoplasm so D is the incorrect statement.
Two students compare and contrast the composition of a plant and animals cells. Plant cell do not have cytoplasm this observation is incorrect. Therefore, option D is correct.
What is cytoplasm ?The liquid present inside a cell but not in the nucleus of the cell. In a cell, the cytoplasm is where the majority of chemical processes occur.
The gel-like substance that fills a cell is called cytoplasm. It serves as a catalyst for chemical reactions. It offers a foundation for other organelles to function within the cell. A cell's cytoplasm is where all the processes for cell division, growth, and replication take place.
Rudolf von Kölliker coined the phrase in 1863, first using it as a synonym for protoplasm, but over time it has come to refer to the cell's interior and extracellular organelles.
The first phase of cellular respiration, known as glycolysis, as well as mitosis and meiosis are just a few of the numerous cellular processes that take place in the cytoplasm.
Thus, option D is correct.
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What did the orbiter do for 5 months once it reached the planet?
Organisms that live in simular environments, such as the ocean, often have the same adaptations. This is due to what
11 Pause
Help
In the classification of organisms, which is the correct order of taxonomic groups from broadest to most specific?
A Order ----> Domain -> Genus
B. Class ---> Family -----> Order
Oc. Kingdom ----> Class -----> Phylum
D. Family ----> Genus ----> Species
Sion out
1:05
Answer:
I guess (D)
Explanation:
Linnaeus' hierarchical system of classification includes seven levels called taxa. They are, from largest to smallest, Kingdom, Phylum, Class, Order, Family, Genus, Species.
1000000000000000000-100000000000000000000
Answer:
-00.................
Answer: ITS OVER 9000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
Explanation:
The image below shows a type of mutation called a(n) _________.
Answer:
deletion
Explanation:
Which statement describes an advantage of sexual reproduction over asexual reproduction?
A. Sexual reproduction results in more genetic variation in organisms than asexual reproduction.
O
B. Sexual reproduction requires more time to produce organisms than asexual reproduction.
C. Sexually produced offspring are more dependent on their parents for survival than offspring produced through asexual reproduction.
D. Sexually produced organisms are more dependent on other organisms for reproduction than offspring produced through asexual reproduction.
Answer:
I think the answer is A sexual reproduction results in more time to produce organisms than asexual reproduction.
Answer:
1
Explanation:
What are 2 ways yo conserve water
Line B in the given graph represents the reaction with an enzyme added to substrates. How did the enzyme affect the reaction?
Answer:
a. lower activation level
Explanation:
So who wins the game of life?
Answer:
Me.
Explanation:
Answer:
god
Explanation:
because God created all so for me it will be god
Explain the differences between Earth’s crust, mantle, outer core, and inner core.
Answer:
Earth's crust is the coldest Earth layer. Rock makes up the mantle and crust. The Outer core is liquid and the inner core is solid.
Explanation:
Outer and Inner core are both are made mostly of iron, with a little nickel and some other chemical elements.
Question:
Using a specific example, discuss the importance of electrons in the transfer of energy in living systems.
Answer: The transfer of energy in the form of electrons allows the cell to transfer and use energy in an incremental fashion. The principle electron carriers are NAD+ and NADH because they can be easily oxidized and reduced, respectively.
Explanation:
Electrons are very significant in the steps of energy transfer in the living body cells.
When the electrons are displaced from the molecule it gets oxidized which results in a reduction in the potential energy.
Electrons transfer is very important because most of the power is stored in the atoms in the form of electrons that are required for cell functioning.The chief electron transporters are NADH and NAD⁺ they reduce and oxidizes the compounds.NAD⁺ is oxidized and NADH is the reduced form of the molecules.The living structures cannot save a large amount of energy and hence they collect them in the form of ATP and electrons.To learn more about the importance of electrons in living organisms follow the link:
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plzzz helpppppppppppppp
Laying eggs belong to which category of energy use? Maintenance, waste production, movement, growth and reproduction
Answer:
I HOPE IT WILL HELP U
Explanation:
Majority of the people in the poorest regions of the tropics rely on poultry production as their major source of protein supply. However, poultry production is hindered by the harsh environmental conditions in this regions therefore, reducing the daily supply of protein. It is believed that understanding heat stress in birds by paying detail attention to the sources of heat generation in a poultry house can help manage the heat stress situation in this region. This text reviews the internal climatic conditions of the poultry houses, how the birds respond to them, and their implications for heat management in poultry production. Thus, it provides pertinent information for guidance on parameters for open poultry houses architectural design that ensures optimum climatic conditions that will alleviate heat stress problem in poultry production in hot and humid climate.
You can find the correct mass of a solid by using ________
Answer:
weights
Explanation:
Why are photosynthetic organisms, such as plants, so important to life on earth
They filter out carbon dioxide, a greenhouse gas, and they produce oxygen as a by-product of photosynthesis. Of course, oxygen is crucial for essential life processes such as cellular respiration.