Answer:
The reactivity greatens the farther you go down on the periodic table. Lithium will have the weakest reaction, and cesium will have the greatest reaction. Patterns like this are useful to scientists because it shows which elements are the most reactive and which aren't. The farther down and to the left you go within the periodic table, the more reactive the elements become. The farther up and to the right you go, the less reactive they become.
Explanation:
The reactivity of alkali metals increases down the group. Periodic trends help scientists to predict the reactivity of newly discovered elements.
In group 1, reactivity of elements increases down the group because as you go down the group more shells are added thereby making it easier to remove the outermost electron.
This explains the increase in chemical reactivity from Lithium to cesium.
These periodic trends are very important in predicting the chemical reactivity of newly discovered elements that are added to a group.
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The football team has a total of 25 jerseys . There are 5 mediums-sized jerseys . What percent of the Jerseys are médium-sized Jersey?
Answer:
20% or 0.2
Explanation:
if u divide 5 by 25, u get 0.2, which in decimal form is 20%
When testing tonicity of red blood cells, if the solution became opaque after adding blood cells, you could assume
Answer:
The solution was hypertonic and that the cells had burst.
Explanation:
When testing tonicity of red blood cells, if the solution became transparent after adding blood cells, you could assume the solution was hypotonic and the cells had burst.
Tonicity of the red blood cells is the degree or measure of the red blood cells ability to change the volume of a cell by alternating water amount.From the above we can therefore say that the answer When testing tonicity of red blood cells, if the solution became transparent after adding blood cells, you could assume the solution was hypotonic and the cells had burst is correct
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*WILL MARK BRAINLIEST!!* and you don't have to answer all of them! :D
A.) The middle lamella _____.
1.)surrounds and protects the chloroplast
2.)stores water inside the plant cell
3.)attaches plant cells to one another
4.)captures sunlight for use in photosynthesis
B.)Organisms cannot make their own food without _____.
1.)cell membranes
2.)cell walls
3.)chloroplasts
4.)vacuoles
C.) Chloroplasts _____.
1.)provide structure and support for plant cells
2.)are also found in animal cells, but they are much smaller
3.)are found inside the mitochondria
4.)allows plants, algae, and certain bacteria to make their own food
D.) Vacuoles are important for _____.
1.) energy production
2.) protection
3.) storage
4.) photosynthesis
E.) Which of the following statements is true?
1.) The rigidity of a cell wall causes plants to be sedentary.
2.) Primary cell walls are more rigid than secondary cell walls.
3.) Since they have cell walls, plant cells do not have cell membranes.
4.) A wilting plant will have a full central vacuole.
F.) Choose all the answers that apply.
Which of the following are only found in plant cells?
1.) cell membranes
2.) chloroplasts
3.) cell walls
4.) vacuoles
Answer:
A: 3.)attaches plant cells to one another
B: 3.)chloroplasts
C: 4.)allows plants, algae, and certain bacteria to make their own food
D: 3.) storage
E: 1.) The rigidity of a cell wall causes plants to be sedentary.
F: 2.) chloroplasts and 3.) cell walls
Explanation:
I got a 100 on this assignment i know all of these answers are correct
a stem is responsible for providing support to the plant. A bract, rhizome or runner is a type of stem that grows underground
Answer:
It's a rhizome stem.
Explanation:
They grow horizontally underground
How is cellular respiration
connected to our muscular
system?
Answer:
Cellular respiration is a key role in returning the muscles to normal after exercise, converting the excess pyruvate into ATP and regenerating the stores of ATP, phosphocreatine, and glycogen in the muscle that are required for more rapid contractions.
Hope that helps!
PLEASE HELP I HAS 5 MINUTES
Answer:
its ethier a or c
Explanation:
Impetigo.
Explanation....
It cannot be acne since this occurs when you are more in the teens and is not yellow, eliminate the last one.
It cannot be ringworm because they are worms and not apperanced by yellow crust, eliminate the second one.
It cannot be eczema since this is red not yellow, eliminate the first one.
Impetigo appears as yellow crust. Therefore, your answer is the third one, Impetigo.
in which two steps of cellular respiration is the co2 produced
Answer:The only difference between a molecule of a compound and a molecule of an element is that in a molecule of an element, all the atoms are the same. For example, in a molecule of water (a compound), there is one oxygen atom and two hydrogen atoms. But in a molecule of oxygen (an element), both of the atoms are oxygen.
Explanation:hope this helps
The hydrogen used to produce ATP in the light reactions of photosynthesis comes from ___.
a. Splitting water
b. Carbon fixation
c. Movement of hydrogen ions through the membrane
d. The burning of sugar molecules
Answer:
c.
Explanation:
Largest layer of earth that makes up most of the earths mass. A:crust B:mantle. C:outer core. B:inner core
Answer:
Mantle is the answer
Explanation:
The Earth can be divided into four main layers: the solid crust on the outside, the mantle, the outer core and the inner core. Out of them, the mantle is the thickest layer, while the crust is the thinnest layer.
I am taking the same class rn!!! whos your teacher??
Answer:
b-MANTLE
Explanation:
The mantle is the mostly-solid bulk of Earth's interior. The mantle is about 2,900 kilometers (1,802 miles) thick, and makes up a whopping 84% of Earth's total volume.
PLEASE HELPP!!!!
Describe the water cycle in a brief paragraph. Use terms that you know are associated with the water cycle.
Answer:
The water cycle or hydrologic is a continuous cycle where water evaporates, travels into the air and becomes part of a cloud, falls down to earth as precipitation, and then evaporates again. ... As clouds move up and over mountains, the water vapor condenses to form precipitation and freezes.
Man made sources of green House Gases
A
Factory emmissions
B
all of them
C
Chlorofloro Carbons
D
Automobile emmissions
Answer: C. Chlorofluoro Carbons.
Birds display a wide variety of courtship behaviors. Which behavior is also a territorial behavior?(1 point)
creating a bower (arch) with interesting objects and defending it from rival males
flashing feathers to show their health and grooming abilities
dancing and calling on a lek (communal ground) with other males, competing for female attention
singing a particular song to help potential mates hear them
Answer: The correct answer is "creating a bower (arch) with interesting objects and defending it from rival mates".
Explanation:
Just took the quiz.
creating a bower (arch) with interesting objects and defending it from rival males is a territorial behavior.
What is Territorial behavior?Any defended area is referred to as a "territory," and most birds are territorial (in the sense that they defend some area, even if it's merely a nest site), at least for a portion of the year.
When a territory is defended, the "owner" has access to one or more resources (or access to resources of higher quality) than they otherwise would. According to what resource (or resources) is (are) being protected, territories can be categorized.
Type A territory, or the area where mating, nesting, and feeding take place (such as courtship, mating, nesting, & foraging).
Therefore, creating a bower (arch) with interesting objects and defending it from rival males is a territorial behavior.
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Use your own observations and real-life experiences about your brain
Answer:
our life experience changes our brain so if u fall off a bike ur brain will train u and send signals to ur body ur brain also knows when its forgetting something but doesn't know what its forgetting
Explanation:
Which type of cells are being
displayed?
Answer:
These are locking like staphylococcus...!
Explanation:
Meristamatic cells of onion root tip are displayed in the picture. This renders the most desirable and suitable raw material to study the different stages of mitosis.
What are meristematic tissue?A meristem is a particular kind of tissue that can be found in plants. It is made up of cells that have not undergone differentiation and are able to divide. Meristematic cells have the potential to differentiate into all of the other types of tissues and organs that can be found in plants. These cells will continue to divide until they reach a certain point, at which point they will begin to differentiate and will no longer be able to divide.
Additionally, meristematic tissue is responsible for the generation of secondary tissues like wood and cork. Both primary growth (expansion) and secondary growth (thickness) contribute to the plant's overall development.
Apical meristems are the cells that are responsible for the growth of the plant's primary body as well as the extension of its roots and shoots. Because they are the cells that are responsible for secondary growth, also known as an increase in stem girth and thickness, lateral meristems are also referred to as secondary meristems.
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Which of these is describing a Eutrophic Lake?
Mucky Water
Cold Water
Low Biodiversity
Rocky Bottomed
Plz answer I need help thank you
Answer:
Mucky water and rocky bottom
Answer:
mucy water ..........
Describe the role of ATP and enzymes in the underlying molecular processes, including what happens to the free energy of some of the molecules involved.
Answer:
Role of ATP and enzymes are very important.
Explanation:
The role of ATP and enzymes are very important in the process of digestion because enzyme speedup the chemical reaction such as digestion without using in it and when the break down of micromolecules such as glucose occurs, energy is produces in the form of adenine tri phosphate (ATP) that is used in different activities whereas the free energy of some molecule is utilized in doing some useful work.
What is the importance of having bacteria that is helpful
Answer:
The bacteria in our bodies help degrade the food we eat, help make nutrients available to us and neutralize toxins, to name a few examples[8]; [9]; [10]. Also, the microbiota play an essential role in the defense against infections by protecting the colonized surfaces from invading pathogens.
Explanation:
The bacteria in our bodies help degrade the food we eat, help make nutrients available to us and neutralize toxins, to name a few examples[8]; [9]; [10]. Also, the microbiota play an essential role in the defense against infections by protecting the colonized surfaces from invading pathogens.
If you ate more food from secondary consumers, how would this change the percentage of the biomass pyramid necessary to support your survival?
Answer:
would increase
Explanation:
The pyramid of biomass is a diagram that exhibits the total biomass of the organisms at different trophic levels, which are required to support life in a given ecosystem. This pyramid usually starts with producers situated on the bottom (e.g., plants), then continues with the organisms that eat these primary consumers (herbivores), after with secondary consumers (carnivores), and so successively. The pyramid of biomass indicates the amount of mass of 1-primary producers required to support the life of the primary consumers, 2- primary consumers needed to support the life of the secondary consumers, 3-secondary consumers needed to support the life of the tertiary consumers, and so successively for each trophic level. In this diagram, the trophic level with a higher amount of biomass (and energy) is usually represented by the producers (i.e., by organisms on the bottom), and this amount of biomass decreases as long as more levels are considered. In consequence, if more food from secondary consumers is consumed, it will produce an increase in the percentage of biomass that is needed to support life.
Light behaves in specific ways. It can be reflected, refracted, or absorbed, and under certain conditions, run into different kinds of interference. Which explanation best describes why light is refracted as it enters water?
A. The light bends when it enters water due to its reflection.
B. The speed of light remains the same as it moves from air to water, causing the light to reflect.
C. The speed of light increases when it enters a different medium, but it doesn't bend.
D. The speed of light changes as it moves from air to water, causing the light to bend.
Answer:
D
Explanation:
Refraction is generally defined as the change in the direction of a wave as it travels from one medium to another. Light is a form of wave and light refraction is caused by a change in the speed of light as it moves from air to water, causing the light to bend in the process. The medium of travelling has to be transparent.
The change in the speed and direction is due to the variability in the refractive index of media. Light travels faster as it moves from a medium of higher refractive index to a medium of lower refractive index and vice versa.
The correct option is D.
What type of radiation constitutes the basis for setting an SPF rating?
p
Answer:UV radiation
Explanation:
The diagram below shows the exchange of carbon dioxide (CO2) and oxygen (O2) between a cell and the blood flowing through a capillary.
In this diagram, the molecules of CO2 (represented by x’s) are moving from an area of--
Answer:
From an area of higher concentration to an area of lower concentration.
Explanation:
The molecules of CO2 are moving from an area of higher concentration to an area of lower concentration. Carbondioxide is produced as waste product in the cell during the process of respiration. This carbondioxide gas is loaded in blood cells because in the cell, concentration of carbondioxide gas is higher while on the other hand the concentration of carbondioxide is lower in the blood cells. This carbondioxide gas exchange in the lungs with oxygen which is required in the process of respiration for the production of energy in the form of ATP molecules. So from the conclusion we can say that CO2 moves from an area of higher concentration to lower concentration.
5.2 learning the key term answer
The population in a 50 square mile area is 200 people. What is the population density?
Answer:
[tex]\rho _{population}=4\frac{people}{mi^2}[/tex]
Explanation:
Hello.
In this case, since the population density is computed by dividing the amount of people by the space (area) where they are in:
[tex]\rho _{population}=\frac{people}{area}[/tex]
For 200 people living in a 50-mi² area, the population density is:
[tex]\rho _{population}=\frac{200people}{50mi^2}\\\\\rho _{population}=4\frac{people}{mi^2}[/tex]
It means that 4 people live per square mile area.
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HELP PLS I NEED HELP NOW WE HAVE 5 minutes left pls help!! ;(
Kinsey eats an apple and then goes back to soccer practice. She runs down the field to kick a goal. She is changing______energy into
________energy.
-mechanical, kinetic
-chemical, mechanical
-chemical electric
-clectic heat
Answer:
B. Chemical--->Mechanical
Explanation:
because the apple is made of chemical substances but the energy is transformed into a mechanical use. Pls Brainliest! It would mean a lot! ;)
Answer:
B
Explanation:
during photosynthesis, what is the source of the carbon i the sugar that is created
Answer:
Plants get the carbon from the air that humans exhale. They breath it in and use it for photosynthesis.
Explanation:
Took biology last year.
During photosynthesis, what is the source of the carbon is the sugar that is created is carbon dioxide in the air.
Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.Carbon dioxide serves as the source of carbon, and it enters the photosynthetic process in a series of reactions called the carbon-fixation reactions (also known as the dark reactions).Stages of photosynthesis:
(i) Absorption of light energy by chlorophyll.
(ii) Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen.
(iii) Reduction of carbon dioxide to carbohydrates.
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WHICH LEVEL OF PROTEIN STRUCTURE MUST BE INVOLVED IN FORMING THE ACTIVE SITE
Answer:tertiary and quaternary
Explanation:
How the coin flip relates to the probability of inheriting genetic condition?
Answer:
A coin represents a diploid, heterozygous cell with its heads and tails sides. The act of tossing the coin to land on heads or tails, provides an apt representation of the segregation of alleles during meiosis in the formation of gametes.
or i guess you could just say its all by chance ;P
peace :)
Answer:
It is very similar to the way traits are inherited in nature, as both combinations occur by chance. Though, in the coin toss, there are only 2 possible alleles whereas in nature there may be more complicated combinations of alleles for traits.
Explanation:
In physics, what is a black body?
Answer:
Blackbody, in physics, a surface that absorbs all radiant energy falling on it. The term arises because incident visible light will be absorbed rather than reflected, and therefore the surface will appear black. The concept of such a perfect absorber of energy is extremely useful in the study of radiation phenomena.
Herbicides are being used to kill weeds in a nearby field. The plants absorb the herbicides from the soil. Which organelle
in the plant will most likely store the absorbed herbicide waste?
ribosome
vacuole
chloroplast
mitochondrion
Answer:
The answer is B. Vacuole
Explanation:
As the plants have no used for the herbicides, it will be transported to it "waste bin" which is the Vacuole.
Definition of Vacuole: Vacuoles are generally small and help sequester waste products. In plant cells, vacuoles help maintain water balance. Sometimes a single vacuole can take up most of the interior space of the plant cell.
Also, completed a test with same question, and got it right.
Vacuole organelle in the plant will most likely store the absorbed herbicide waste.
What is Vacuole?
Animal, plant, bacterial, protist, and fungal cells all include vacuoles. It has the size of a giant sac and is one of the biggest organelles found in cells.
Vacuoles are bordered by a thin membrane and filled with fluid and any molecules they take in.
This is their basic structure. Because both are membrane-bound sacs, they resemble another organelle called vesicles, however vacuoles are substantially bigger than vesicles and are created when numerous vesicles fuse together.
Therefore, Vacuole organelle in the plant will most likely store the absorbed herbicide waste.
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PLEASE HELP!
1. How does a clock and its internal and intricate mechanical parts make up a system(Explain)
2. Is it a living or nonliving system? (Explain)
3. How may it support a living system? (Explain)
4. Therefore what is an good example of a definition of a system?
Answer:
1. A clock with internal mechanical parts comprises a system because it is a combination of various parts that a heterogeneous in nature and function working together to achieve one end - indicating the time accurately.
Some mechanical clocks comprise of at least 10 parts namely:
Gear train: This component alone is a sub-system that comprises of at least 8 parts. These parts are broadly classified into wheels, pinions, and barrels.Main SpringPalletEscapement Escapement WheelBarrell Barrell WheelBalance Spring etc2. A clock is a non-living system.
Living systems have certain characteristics. Some of them are:
Stimuli: Response to the environmentGrowth and development: The are able to increase in size and dimensionsHomeostasis: this is the capability of self-regulation regardless of external conditions such as temperature and pressure. etc3. A cannot support a living system. It can however help a human being (which is essentially a combination of various systems) to tell the time.
4. a system is a combination of heterogeneous parts that work in unison to form a whole complex entity that can perform one or more functions.
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