Answer:
shape
Explanation:
gases and liquids have very spread out particles and contain no particular shape. instead, they take the shape of whatever contains them. on the other side, a solid has a particular shape as the molecules are close together.
Pls fill in the blank. Ty
Use the drop-down menus to determine which percentage is equal to each fraction.
:
:
:
:
Answer:
Hope it help you
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Explanation:
1/4 : 25%
3/4 : 75%
4/4 : 100%
2/4 : 50%
REAL NAME - SHRESTH DUBEY
What prediction can you make about softness of potassium and vigor of its reaction with water?
Answer:
Chemical properties of the alkali metals
Atoms of group 1 elements all have one electron in their outer shell. This means that the alkali metals all have similar chemical properties.
Reactions with water
The alkali metals react with water to produce a metal hydroxide and hydrogen. For example, sodium reacts with water:
Sodium + water → sodium hydroxide + hydrogen
2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g)
Sodium hydroxide is an alkali. It is a base that dissolves in water to form an alkaline solution. This solution:
has a pH greater than 7
turns universal indicator solution blue or purple
Hydrogen gas is also produced. With very reactive metals such as potassium, the energy of the reaction causes the hydrogen to burn as the reaction takes place.
Explanation:
Answer:
potassium reacts rigorously with cold water. potassium is a soft metal. we can predict that potassium is a highly reactive metal.
Explanation:
hope this helps
Which domain includes organisms that are called extremophiles (organisms which live in extreme environments)?
Answer: archaea
Explanation:
Most extremophiles are microorganisms (and a high proportion of these are archaea), but this group also includes eukaryotes such as protists (e.g., algae, fungi and protozoa) and multicellular organisms. Archaea is the main group to thrive in extreme environments.
Archaea domain includes organisms that are called extremophiles (organisms which live in extreme environments).
What are the characteristics of archaea?Archaea is a domain of single-celled organisms. These microorganisms lack cell nuclei and are therefore prokaryotes. Archaea were initially classified as bacteria, receiving the name archaebacteria.
The common characteristics of Archaebacteria known to date are these: (1) the presence of characteristic tRNAs and ribosomal RNAs; (2) the absence of peptidoglycan cell walls, with in many cases, replacement by a largely proteinaceous coat.
If there is an overgrowth of another organism called Archaea, then the symptom picture can be very different. There can still be bloating, abdominal pain and cramping, but Archaea usually cause constipation, not diarrhea.
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What groups of organisms are most in danger of extinction?
A. Those with small population
B. Those that migrate or need special habitats
C. Those with large populations that breed quickly
D. Both a and b
Explanation:
D.Both a and B
As organisms with small population and those who migrate and need special habitat are most in danger of extinction.
The group of organisms that are in danger of extinction is those that have small populations and those that migrate or need special habits. So the correct option is D.
What is the extinction of species?
In biology, extinction refers to the extinction or death of a species. Extinction happens when a species' numbers are reduced due to evolutionary changes in its members, such as genetic inbreeding, poor reproduction, and population decline, or due to environmental factors like habitat fragmentation, climate change, natural disasters, and overexploitation of the species for human use.
The majority of species that have ever existed on Earth have gone extinct, but the fossil record indicates five very significant extinctions, known as mass extinction events, each of which resulted in the extinction of enormous numbers of species. The bulk of extinctions, which happen continuously and are described as background extinctions, are separated from these glaring decreases in the variety by the term "mass extinction."
Therefore, the correct option is D.
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Please help(due today)
Answer:
I would say A
Explanation:
it makes the most sense to me sorry if im wrong.
Mario and several friends spend a day at the beach. While watching the ocean waves crashing to shore, Mario wonders how much of the world's water is contained in different types of bodies of water such as oceans, lakes, and rivers. He decides to research the percentage of Earth's water found in different locations. Which does his research reveal?
Answer:
The ice caps located at both poles contain 30 percent of Earth’s water.
Explanation:
What differentiates passive transport from active transport?
Group of answer choices
Molecules move down a concentration gradient during passive transport.
Passive transport involves molecules moving across the cell membrane.
ATP is needed for passive transport to occur.
Proteins have a role in passive transport.
Answer:
The movement of molecules across a membrane without the input of energy is known as passive transport. When energy (ATP) is needed, the movement is known as active transport. Active transport moves molecules against their concentration gradient, from an area of low concentration to an area of high concentration
Explanation:
A blank is an example of a prokaryotic cell
Answer:
Bacteria
Explanation:
Answer:
Bacteria
Explanation:
Bacteria is the most common prokaryotic cell. Hope this helps!
what is the answer?
Answer:
[tex]\boxed {\tt 3}[/tex]
Explanation:
An element only has one type of atom and cannot be broken down by chemical means.
Let's analyze the answer choices.
1. This has two types of atoms, so it cannot be an element. It has more than one type of atom.
2. This has two types of atoms that are bonded together. It cannot be an element because there is more than one type of atom and the bonds can be broken.
3. This has one type of atoms, so it is an element.
Therefore the best answer choice is 3.
enzyme activity can be affected by the following check all that apply
Answer:
enzyme activity is affected by many factors such as temperature, concentration and ph note that enzymes work best within a certain ph ranges
Explanation:
Which of the following is NOT one of the functions of lipids?
A. forming the exoskeletons of insects
B. forming waxy leaf coverings
C. storing energy in fat cells
D. forming cell membranes
Answer:
A function that is not characteristic of lipids is forming the exoskeleton of insects.
Explanation:
The exoskeleton is a rigid external structure that provides support and protection to animals such as insects.
The structure of exoskeletons is formed, especially in insects, by chitin. Chitin in turn is made up of N-acetyl-glucosamine, which when polymerized forms the hard and resistant layer that forms the external cover of the insects. Exoskeletons do not contain lipids in their composition.
The other options are correct with respect to the function of the lipids:
B. Hydroxy fatty acid form the waxy layer that covers the leaves of the plants.
C. Lipids are a reserve energy source, stored in the fatty cells.
D. Phospholipids are the main component of cell membranes.
In this phase the chromosones begein to un coil and form chromatin?
a. Telophase
b. Metaphase
c. Prophase
d. Anaphase
Answer:telophase
Explanation:
Telopahse is the last phase of mitosis. The chromosomes uncoil then a membrane forms around them and the one cell splits into two cells.
why is it important to understand the breakdown of water into its ions before learning about acidity
Please answer this.. please
Answer:
10.8 amu
Explanation:
11 * 0.80 = 8.8 (11 represents ion, 0.80 represents %)
10 * 0.20 = 2 (10 represents ion, 0.20 represents %)
8.8 + 2 = 10.8 amu
How does the Golgi Body and Plasma membrane work together ?
Answer/Explanation:
The Golgi body is a system of flattened sacs that is involved in the packaging, modification, and transport of proteins. It is particularly important for proteins that have to be transported outside of the cell.
Proteins from the Golgi that are to leave the cell are transported in vesicles. When they reach the membrane, the vesicles fuse with it and release the proteins outside of the cell
The concentration of urea in g per 100 cm3 in part A is 0.03, and in part C is 2.00.
How many times more concentrated is the urea in part C compared with part A?
Animals and plants that are unable to adapt to their environment will become
A- Prey
B- A new species
C- Extinct
D- Hungry
I think A or C
Explanation:
It really depends on how the question is phrased. Animals and plants that are unable to adapt to their enviroment will become- Hold it right there. How long will they be unadaptable? Is this forever? If so then yes, they will definately become extinct. If this is for a short amount of time then no, they will become prey, but there is also the fact that yes, they will become hungry. Because if they are not adapted then how are they gonna know the best sports for grub? Same thing for plants, if they can't adapt to the climate, they cannot produce food for themselves. Basically, if its a simple question then forget about everything else. It's Prey, because animals that can't adapt to their enviroment are immedietly in danger. Now if this question has more to it then I would go for C. But overall Just go with prey for now.
The fish in the first bowl couldn't have baby after baby after baby forever. The bowl filled up with fish and many fish died. A bowl this size can only keep three fish alive. What is it called when an area/home/ecosystem has a limit to the number of living things that can live there?
Answer: Carrying capacity
Explanation:
The carrying capacity can be defined as the ability of an ecosystem to sustain a particular number of members of the population of species in terms of availing resources for survival.
According to the given situation, the fish bowl is an ecosystem which can only sustain a particular number of fishes. Thus, the increase in the population of baby fishes was not supported by the fish bowl.
A statement of fact meant to explain an action or set of actions about nature .
A. Laws
B. Hypothesis
Answer:
A. Laws
Explanation:
Answer:
Laws
Explanation:
A hypothesis is a guess based off of background knowledge while laws are strictly facts.
Tertiary consumers
Secondary consumers
Primary consumers
Producers
17.
As you go up each level of the food pyramid,
energy is lost to
,and
A. laughing, vomiting and breathing
B. Waste, laughing and sleeping
C. Waste, digestion and vomiting
D. Waste, respiration and heat
earths_____ absorbs solar radiation and re-radiates it to earth’s surface
Which component of nerve cells contains the nucleus? (1 point)
dendrite
axon
neuron
cell body
The nucleus is present in the cell body.
Nerve cell:Nerve cell is a basic unit of communication. Each nerve cell contains axon, cell body, dendrites and terminal branches. There are about 85 to 200 billion neurons present.
Neurons are surrounded by a cell membrane.Neurons have a nucleus that contains a gene.It also have cytoplasm, mitochondria and other cell organelle.Neurons are of different types:
Unipolar neuronBipolar neuronMultipolar neuronNeurons are the chemical messenger. They contain nucleus which contain genetic material. Mitochondria produces energy. Neurons contain specialized structures and chemicals. They contain some specialized structures (synapse) and chemicals called neurotransmitter.
Therefore, The nucleus is present in the cell body.
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What is the difference between facilitated diffusion and active transport?
Facilitated diffusion uses ATP and moves substances with the concentration gradient; active transport does not.
Active transport uses ATP and moves substances against the concentration gradient; facilitated diffusion does not.
Active transport uses ATP and does not require a carrier protein; facilitated diffusion does neither.
Facilitated diffusion uses ATP and requires a carrier protein; active transport does not.
Answer:
Active transport uses ATP and moves substances against the concentration gradient; facilitated diffusion does not.
Explanation:
Active transports moves against the concentration gradient (hence why it needs energy or ATP to do so, its going "against the grain"). Facilitated diffusion does not require ATP but does something require carrier proteins during passive transport.
what transport moves ions?
- diffusion
- facilitated diffusion
- osmosis
- molecular pumps
- endocytosis
- exocytosis
Answer:
a facilitated diffusion
Sorry If I'm wrong
Summarize how a single change at cellular level can impact the entire body
Answer: A single change at a cellular level can change the way our entire body reacts, functions, and develops. Maintaining homeostasis is vital for our bodies to preform its necessary functions, without constant balance our bodies are unable to properly preform consequently, resulting in sickness and even death.
Explanation:
I used my biology book.
The body has different levels of organization based on structures and functions. The cellular level is the smallest and the basic level of the organization that consists of cells that are capable of division.
A single change at a cellular level can impact the entire body as:
Cellular levels consist of cells of different shapes, sizes and functions. Similar cells make up the tissue to perform functions.A single change can alter the homeostasis of the cell and can bring about a larger impact on the body organization as maintenance of temperature is very important for the living process.The whole body depends upon the cells for instructions of the growth, functioning, signalling and transportation.Therefore, a single change at the cellular level can alter the entire body.
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Which of the following best describes the relationship between the shape of enzymes and the reactions they catalyze? (5 points)
Group of answer choices
The shape of an enzyme depends on the reaction that it needs to catalyze.
Enzymes with more active sites can catalyze several reactions at once.
The shape of an enzyme determines which reaction it can catalyze.
Enzymes change shape after they catalyze a reaction and become waste products.
Answer:
The shape of an enzyme determines which reaction it can catalyze.
Explanation:
Enzymes are regenerated at the end of the reaction.
2. What are 3 examples of lipids and what functions do they serve in organisms' bodies?
Answer:
Examples of lipids include fats, oils, waxes, certain vitamins
The functions of lipids include storing energy, signaling, and acting as structural components of cell membranes.
Which labels would correctly model photosynthesis?
Answer:
A. Carbon dioxide
B. Light energy
C. Oxygen
D. Glucose
E. Water
Explanation:
The model for photosynthesis is the sun in the form of solar energy where the carbon dioxide along with gets formed in the leaves where it is kitchen of the leaves along with the carbon dioxide gets removed out.
What is the primary source of energy ?The primary source of energy is the sun which will help in the production of biomass.
A. Carbon dioxide
B. Solar energy
C. Oxygen
D. Stomata
The photosynthesis is the unit where the solar energy is the producers energy used by the producers. Carbon dioxide is the gas that is the used to the plants that is synthesizing plants food.
Leaves have the stomata where the food is being synthesized where the chlorophyll containing pigment is helpful in making where the food is being synthesized.
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Which concept is not a part of the theory of evolution?
A. Present-day species developed from earlier species.
B. Some species die out when environmental changes occur.
C. Complex organisms develop from simple organisms over time.
D. Change occurs according to the needs of an individual organism to survive.
Answer:
D. Change occurs according to the needs of an individual organism to survive.