1. Which part of the cell membrane acts like bridge and only allows certain materials in and out
2.
Because a membrane is picky and only lets in certain materials the membrane in considered_______
Answer:
1.phospholipid bilayer
2. selectively permeable
What does the lunar rover do?
O moves astronauts around
O gives air to astronauts
O makes space rocks
:-) :-) :-) :-) :-) :-) :-) :-) :-)
Please help
Answer:
.
Explanation:
While the average human is able to hold his or her breath for approximately one minute, a whale can dive for over 30 minutes without returning to the surface. Which of the following correctly describes this difference? (4 points)
Whales need less energy than humans.
Whales gather energy from their environment better than humans.
Whales are more efficient at gas exchange than humans which helps them conserve energy.
Whales have cells that produce energy differently than humans.
Answer:. I guess it's b because we know that whales have a blowhole hope this helps
Osmosis is important to cells because _______ *
cells contain fluids that are mostly water
cells are filled with fluids that are mostly sugar
cells need to be kept cool
cells need food
( PLEASE ANSWER THIS ASAP!!!) Thanks!!
Answer:What is the main function of osmosis? Osmosis helps in stabilizing the internal environment of the organism by balancing the levels of water and intracellular fluids. Also, the nutrients and minerals enter the cell by osmosis which is necessary for the survival of cells.
Explanation:
Osmosis maintains the osmotic pressure in cells. the answer to this question is options A and B.
Osmosis is essential for the cells due to two reasons:
1. Cells are made up mostly of water-based fluids. The process of osmosis involves the movement of water molecules from a region with a lower concentration of solutes to an area with a greater concentration of solutes through a semipermeable membrane. This aids in preserving the equilibrium of water within and outside the cell, ensuring that the cell remains hydrated and performs as intended.
2. Sugar-based fluids are the main component of cells' fluids. Osmosis also affects how much sugar and other solutes are present inside cells, helping to control their concentration. Osmosis will cause water to enter the cell if the concentration of sugar inside the cell is higher than the outside, diluted the sugar, and maintain equilibrium.
Therefore the correct answer is options a and b.
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How do adaptations lead to change?
i know its not a study question but if deaf peopke dont know what people sound like how do think in their head
Answer:
deaf people can think and know thier voice when they are thinking so they don't rlly need to imagine peoples voices they know what people would soundlike but some people aren't born deaf and know how people sound like
Explanation:
Answer:
Well.. they have their own voice that they can be able to hear in their head... it's given automatically, the voice they hear when they talk. It's not something where the first voice you hear in your life, is the one you hear for the rest of ya life..
Explanation:
Hope this helped :D Have a great day
Need help right nowwww!!
Give three differences between parenchyma and selerenchyma?
Answer:
Parenchyma cells have thin primary walls and usually remain alive after they become mature while Sclerenchyma cells have thick lignified secondary walls and often die when mature.
Parenchyma forms the "filler" tissue in the soft parts of plants while Sclerenchyma provides the main structural support to a plant.
Parenchyma cells are usually loosely packed with large intercellular space while Sclerenchyma cells has no intercellular spaces between the cells.
an adaptation is A a trait that helps an organism survive in its enivironment
Answer:
True
Explanation:
The given statement is true. An adaptation is any characteristic that helps an organism survive or reproduce. As the environment changes, organisms that inhabit it have to change as well in order to survive. The changes they go through can be physical or behavioral. For example, giraffes have very long necks so that they can reach the leaves of tall trees, and birds have very light bones so that they can fly. This is how species continue to thrive for a very long time.
Can you tell me which go where?
Answer:
heredity goes to the first one
phenotype at the second one
Explanation:
What mineral is produced when two atoms of iron Chemically Combined With three Atoms of oxygen
Answer:
Hematite
Explanation:
Hematite is created with two iron atoms to three oxygen atoms, and magnetite, with three iron atoms to four oxygen atoms, which are both iron oxides.
How do fungi and plants differ?
Answer:
Option 2, i hope that helps instead of my last answer, lol
Answer:
Explanation:
One of the main differences between plants and fungi is that fungi have chitin as a component of their cell walls instead of cellulose. ... Fungi absorb all the nutrients they need from the soil unlike plants which require chlorophyll to conduct photosynthesis.
Hopes this helps tbh-
Overgrazing reduces grass cover and negatively impacts the soil health by reducing it's ability to hold water . How can Overgrazing be prevented and support a more sustainable use of grasslands ?
A. Allow developers to buy rachlands for housing .
B. practice moving confined cattle every few days
C. Allow unlimited animals to graze in a given area to reach carrying capacity.
D. practice grazing an area of land at the same stage of plant growth each year .
Answer: C. Allow unlimited animals to graze in a given area to reach carrying capacity.
Explanation: I choose this as the answer because the animals grazing in the wrong parts be part of the reason the soil can't hold the water it needs, so allowing animals in a particular area that's less of a problem with Overgrazing would be helpful
Which component of a galaxy consists of tiny particles that look smoky or cloudy and can be found in the space between stars? A) Gas B) Stars C) Dust D)Sun
Answer: Gas
Explanation:
Look through the lesson lol i know your school
Nebulae are different luminous regions of the interstellar medium that can be made up of cosmic dust as well as ionized, neutral, or molecular hydrogen, hence option C is correct.
What is dust?All the stuff between stars is referred to as interstellar matter by astronomers, and the complete collection of interstellar matter is referred to as the interstellar medium (ISM). Some interstellar material is gathered into massive clouds that are each referred to as a nebula.
Tiny pieces of solid matter drifting about in the region between stars make up cosmic dust. It's not like the dust you find in your home; instead, it has tiny particles that range in size from collections of just a few molecules to grains that are 0.1 mm in size.
Therefore, an interstellar medium can be made up of cosmic dust as well as ionized, neutral, or molecular hydrogen, hence option C is correct.
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Please show/demonstrate any INTERACTION between two blotic factors or between a biotic and abiotic factor. Don't forget to explain if the parts are biotic and/or abiotic and make sure there's some kind of ACTION going on (Ecology).
What makes a fat saturated or unsaturated?
Answer:
Saturated fatty acids lack double bonds between the individual carbon atoms, while in unsaturated fatty acids there is at least one double bond in the fatty acid chain. Saturated fats tend to be solid at room temperature and from animal sources, while unsaturated fats are usually liquid and from plant sources.
Explanation:
Atmospheric nitrogen, in its gaseous form, is useful to plants. *
True
False
Answer:
true
Explanation:
Answer:
False.
Explanation:
Atmospheric Nitrogen, in its gaseous form, is harmful to Plants and Animals.
Have a great day! (:
Does natural selection act on individual or does it act on something else ?
Answer:
huh
I don't know
Answer:
Yes and no
Explanation:
Natural Selection is the process of organisms adapting to the environment around them so yes individuals are effected through them adapting to the changes and they later pass their good traits to their offspring, and eventually the individuals who don't adapt die off, but the natural selection as a whole is just the process.
What causes weathering A. natural processes only B. chemical processes only
C. Weather related processes only D. physical and chemical processes
Answer:
I believe that the answer is A. Natural processes only, although I could be wrong.
Explanation:
There are two types of weather, mehanical and chemical, but I think the answer is A.
If a sample contains 100g of a radioactive isotope, how much will be left after 3
half-lives?
6.25 grams would be your answer b/c as you divide into 3 and as the 3 half lives, I would simplify that also which would give me 6.25
Water is an adhesive substance. This means that water particles
A. are attracted to other types of particles.
B. are repelled by other water particles.
C. are attracted to other water particles.
D. are repelled by other types of particles.
Answer:
A
Explanation:
are attracted to other types of particles.
Adhesion is the term for the attraction of substances between distinct phases. It uses the attraction of water to other polar compounds, as an illustration, hence option a is correct.
What is the characteristic of water?Cohesion is the tendency of particles to cling together, it uses the attraction of water molecules to one another.
Water has a characteristic called cohesion in which water molecules form bonds with one another. As a result, surface tension develops and raindrops start to form.
Water molecules can interact with other molecules through adhesion, this enables water to adhere to surfaces like windows and other things.
Therefore, water is a strong adhesive that adheres effectively to many different materials, hence option a is correct.
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The difference between active and passive transport is that–
A. Passive transport requires energy to move molecules up a concentration gradient, and active transport does not.
B. Passive transport can only move specific particles across a membrane, and active transport can move any particle.
C. Active transport requires energy to move molecules up a concentration gradient, and passive transport does not.
D. Active transport moves molecules in animal cells, and passive transport moves molecules in plants.
Answer:b
Explanation:
Answer:
moves particles from an area of low concentration to an area of high concentration.
Explanation:
edge
Which best explains the role of plants in the nitrogen cycle?
Answer:
Assimilation
Explanation:
This is how plants get nitrogen. They absorb nitrates from the soil into their roots. Then the nitrogen gets used in amino acids, nucleic acids, and chlorophyll. ... When a plant or animal dies, decomposers like fungi and bacteria turn the nitrogen back into ammonium so it can reenter the nitrogen cycle.
Which is most likely the last to form
4. Transcribe and Translate a Gene. How is mRNA different from DNA? (Hint read the side-bar on this page for help) What is the correct starting position for translation? Write the amino acids used to assemble your protein in the order below. Where does translation take place?
which of the following substances is formed during photosynthsis hurry please thx
Answer:
Glucose
Explanation:
During photosynthesis plants produce a substance called glucose from simple inorganic molecules.
Hope this helps :D Have a fantastic day ^-^
The National Academy of Sciences reported that the Earth's surface temperature has risen by about 1 degree Fahrenheit in the past century. This is an example of a change in Earth's
Answer:
Global warming is the unusually rapid increase in Earth's average surface temperature over the past century primarily due to the greenhouse gases released by people burning fossil fuels.
How does a straight alignment between arth, the
sun, and the moon impact the tides on Earth?
A.
It produces the greatest change in high and
low tides.
B
It produces the least change in high and low
tides.
It produces semidiurnal tides.
It produces diurnal tides.
C.
D
Answer: A. It produces the greatest change in high and low tides
Explanation:
Answer:
A. It produces the greatest change in high and low tides
Explanation:
I hoped this helped! Have a great day!
Which human activity negatively affects the stability of the environment?
Answer:
Some human activities that cause damage (either directly or indirectly) to the environment on a global scale include population growth, overconsumption, overexploitation, pollution, and deforestation, to name but a few.
Explanation:
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