Answer:
decrease, decrease
Explanation:
By using antimalarial drugs in order to prevent malaria, the frequency of the sickle cell allele decreases in both areas where malaria is endemic and the areas where no incidence of malaria occurs because there is no necessity of sickle cell allele in the population to prevent malarial disease. Sickle cells have high significance in prevention of malarial diseases so when there is no malaria happens in the population so there is no need for it and the allele slowly removed from the population and decrease occurs in its frequency.
9 facts about the atmosphere
Answer:
#1. Earth Has Had Three Atmospheres.
#2. Oxygen Caused the First Major Extinction
#3. The Sky Should Be Violet
#4. The Atmosphere Extends 6,200 Miles into Space
#5. It Protects Us from Meteors
#6. There are five layers within the atmosphere
#7. The atmosphere surrounds the planet, protecting it by absorbing the ultraviolet radiation from the sun, and regulating the temperature extremes that would otherwise occur between day and night.
#8. The troposphere lies closest to the Earth and is about 11 miles thick
#9. Blood Boils After 60,000 Feet into the atmoshpere
What is the difference between mechanical energy and electrical energy?
Answer:
Kinetic Energy can be defined as the energy possessed by the object by the virtue of its motion. The sum of these two energies is often called Mechanical Energy of the System. Electric Energy is also a form of these 2 energies: Electric potential energy stored in a charged particle in an electric field.
Explanation:
hope this helps...
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what is the difference between prokaryotic and eukaryotic cells
Answer:
Prokaryotes are organisms that consist of a single prokaryotic cell. Eukaryotic cells are found in plants, animals, fungi, and protists. They range from 10–100 μm in diameter, and their DNA is contained within a membrane-bound nucleus. Eukaryotes are organisms containing eukaryotic cells.
Area "X" show the structure of
A) a DNA molecule
B) an amino acid
C) a RNA molecule
D) a nucleotide
Answer:
D) a nucleotide
Explanation:
A single nucleotide will contain a phosphate group, sugar molecule (deoxyribose) and a nitrogenous base ( which could be adenine, thyamine, guanine or cytosine ).
Which is an example of two
organisms competing for
an abiotic factor?
A. Two different species of insects
competing for leaves from trees.
B. Two different species of mammals
competing for small rodents to eat.
C. Two different species of bird bird
competing for berries
D. Two different species of mammals
competing for the same water source.
Answer:
D
Explanation:
because an abiotic factor is not alive and it can never had been alive at some point so water and two different mammals
hey guys could you help me???
A cell passes on its genetic information ________.
A.
each time it divides
B.
only during certain divisions
C.
before it divides
D.
to neighboring cells
En las plantas de guisante la forma lisa de la vaina (cubierta) es dominante sobre la forma rugosa. Se cruzan plantas de vaina lisa con plantas de vaina rugosa, ambas homocigotas. Determine fenotipo y genotipo de F1 y F2.Resultante
Answer:
F1)
Genotipo: 100% Heterocigota, LlFenotipo: 100% Frutos de vaina lisaF2)
Genotipo: 25% Homocigota dominante, LL50% Heterocigota, Ll
25% Homocigota recesivo, ll
Fenotipo: 75% Frutos de vaina lisa (LL + Ll)25% frutos de vaina rugosa (ll)
Explanation:
Datos disponibles:
Vaina lisa es la característica dominanteVaina rugosa es la característica recesivaEl gen que codifica la textura de la vaina es dialélicoLlamemos L al alelo dominante que expresa vaina lisa, y l al alelo recesivo que expresa vaina rugosa1er Cruza: planta de vaina lisa homocigota x planta de vaina rugosa homocigota
Parentales) LL x ll
Fenotipo) Lisa Rugosa
Gametos) L L l l
Cuadro de Punnett) L L
l Ll Ll
l Ll Ll
F1) 4/4 = 100% de la progenie será heterocigota, Ll, para la textura de vaina, pero expresarán vainas lisas.
2da Cruza: Dos plantas provenientes de la F1
Parentales) Ll x Ll
Fenotipo) Liso Liso
Gametos) L l L l
Cuadro de Punnett) L l
L LL Ll
l Ll ll
F2) 1/4 = 25% de la progenie será homocigota dominante, LL
2/4 = 50% de la progenie será heterocigota, Ll
1/4 = 25% de la progenie será homocigota recesiva, ll
3/4 = 75% de la progenie tendrá vainas lisas
1/4 = 25% de la progenie tendrá vainas rugosas.
John's baptism of Jesus was different from his baptism of other people because:
Jesus was the last person John baptized
Jesus was the first person John baptized
John baptized unto the remission of sin, but Jesus had no sins to remit
Jesus was baptized in the Jordan River, John usually baptized in the Sea of Galilee
Answer:
John baptized unto the remission of sin, but Jesus had no sins to remit
Hope this helps:)
I need an example of natural solution! (ex: a giraffe with a long neck) and I need an explanation on how it has adapted to it’s environment please!!
what are the uses of four chambers in heart?
Answer:
An awnser i found was below
The heart has four chambers: two atria and two ventricles. The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle. The right ventricle pumps the oxygen-poor blood to the lungs. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle.Explanation:
hope this helps :)
list and explain the socio-economic factors that could be considered for career and study choices.
Answer: qsy yo no soy adivina
6. Contractions of the myocardium pump __________________ through the circulatory system.
Answer:
blood
Explanation:
Contractions of the myocardium pump blood through the circulatory system.
Sophie visited Carlsbad Caverns with her family during her summer vacation, and she was amazed at the cave’s formations. She learned that the cave was formed from minerals.
Rearrange the phrases describing one of the ways minerals form into the correct order. Place the earliest stage of mineral formation at the top. Place the final stage at the bottom. (Write 1 2 3 or 4 in order)
1. a solution forms from a liquid and dissolved substances
2. a warm solution flows through a crack in the rocks there
3. elements and compounds leave as the solution cools
4. elements and compounds crystallize
BASICALLY SAY WHICH STEPS GO FIRST IN MINERAL FORMATIONS! PLESSS
Answer:
The ways through which the minerals form include the following order:
2. a warm solution flows through a crack in the rocks there
1. a solution forms from a liquid and dissolved substances
3. elements and compounds leave as the solution cools
4. elements and compounds crystallize
Explanation:
From the explanations above, it could be seen that a warm solution (most probably water) flows through the cracks in the rocks leading to dissolution of substances to form liquid. When the liquid cools, the elements leaves and crystallize as compounds.
Which invertebrate from the picture did you choose from Figure 1? HINT: There is only 1 on there to choose.
Explain how body plan and anatomy enables your chosen invertebrate to perform the essential functions it needs to survive.
Answer:
Octopus (Behind the octopus's head, directly opposite the arms, is its mantle. The mantle is a highly muscled structure that houses all of the animal's organs. Its gills, hearts, digestive system and reproductive glands are all crammed into this one space)
Explanation:
What are the three types of isolating mechanism that favor reproductive isolation and speciation?
1. Typically large organisms
Large organisms include...
Mammals (Mammalia)
Stem-mammals (Synapsida)
Reptiles (Reptilia)
Dinosaurs (Dinosauria)
Science 30 points just need to double-check this concept. Thank you only real answers, please.
Look at the minerals shown below. (1 point)
Both diamond and coal are formed by changes in pressure and temperature below the Earth's surface. Which of these is a step in the formation of the minerals?
A. atoms break up in extreme heat
B. atoms are rearranged in materials
C. atoms combine in water to form solids
D. atoms of magma cool after a volcanic eruption
Answer:
Atoms are rearranged in materials
Explanation:
If a plant is an organism then the plants leaves, roots and stems are what level of organization?
Answer:
organ systems
which includes all parts above the ground such as leaves, stems, roots and tubers.
Explain how a concentration gradient, a membrane protein, and hydrogen ions work together to provide a mithochondrion with energy.
Answer:
Mitochondria within the electronic transport chain, are responsible for producing the energy that the cell needs, adjusting its operation to meet the metabolic needs of the body.The mitochondrion is the place where oxygen is consumed from aerobic organisms through various electron carriers and proton translocators (H +).
Explanation:
The lipid matrix of the membrane provides an impermeable barrier to ion translocation, as well as a topological organization to the catalysts in the membrane matrix that allows them to transport both e- and ions within and across the membrane in vector form. The transformation of oxidative energy into other forms of energy is carried out, initially, by generating a transmembrane electrochemical potential difference of H + ions (protomotive force). This force is the product of the asymmetric distribution of H + on both sides of the membrane, as those are translocated through it by the enzymatic complexes of the respiratory chain.The protomotive force is made up of two closely related components: one, function of the difference in chemical concentration of hydrogens across the membrane (a pH gradient) and another, dependent on the difference in electrical charge of H + ions on both sides of it (an electrical potential gradient). Gradients of electrical charge and chemical potential produce a field in which a force is exerted that tends to attract previously expelled protons into the mitochondria. It is the enzymatic complex of ATPase, the means by which the thermodynamically reversible translocation of H + ions is catalyzed. At the same time, the chemical activity of the H + on both sides of the membrane causes a change in the equilibrium constant of the enzyme, inducing it to catalyze the synthesis of ATP.
On automobiles, what is designed to reduce noise pollution?
A Mufflers
B carburetors
C oil
D pistons
What trait would make an individual likely to survive and reproduce in a pest population that feeds on pest-resistant plants?
Answer:
Upon exposure to insecticides, insects that do not carry the resistance genes die, thus allowing the individuals with the resistance genes to survive and reproduce, creating more resistant insects. With every generation the number of resistant insects increase.
Explanation:
The trait that would make an individual ( pest ) survive in a pest population that feeds on pest-resistant plants is : Possession of Pesticide resistant genes
In a pest infected population most pests can be eliminated with the use of pesticides. therefore when pesticides are administered in the population, the pests that posses genes resistant to pesticides will survive and continue their reproduction cycle. while pests without pesticide resistant genes will be eliminated.
Hence the trait that a pest( individual ) should posses to survive in a pest population is; the Possession of Pesticide resistant genes .
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The height of an object above sea level is called
Answer: The elevation of an object is it's height above sea level. Sometimes elevation and altitude are using interchangeable, however, altitude is the vertical distance between an object and the earth's surface.
Explanation:
Answer: The elevation of an object is it's height above sea level. Sometimes elevation and altitude are using interchangeable, however, altitude is the vertical distance between an object and the earth's surface.
Explanation: hope this helps
What type of microscopy would you use to study the detailed internal structure of a mitochondria? A.Light microscopy B.Scanning Electron Microscopy C.Transmission Electron Microscopy D.Electron microscopy
Answer:
C: Transmission Electron Microscopy
Explanation:
Transmission Electron Microscopy shows the complex internal membrane structure of mitochondria
What are two things that can make the pressure of a gas rise? (what are two variables you can change to increase the pressure) *
Answer:
Temperature, pressure, volume and more
A food web shows how energy moves from one organism to another in an ecosystem. Students in a life science class created a diagram demonstrating a food web.
FOOD WEB
Owl
Snake
Hank
Frog
Grasshopper
Mouse
Rabbit
Caterpillar
Wheat
Dandelion
Clover
Based on the food web, which of these organisms receives its energy directly from a primary consumer?
caterpillar
dandelion
frog
grasshopper
PLEASE HELP! 20 POINTS!! Explain how genes relate to the presence of dominant and recessive traits
Answer:
Fires often remove alien plants that compete with native species for nutrients and space, and remove undergrowth, which allows sunlight to reach the forest floor, thereby supporting the growth of native species. ... Overall, fire is a catalyst for promoting biological diversity and healthy ecosystems.
Explanation:
The cells of both unicellular and multicellular organisms carry out life processes. With respect to life processes, what advantage do multicellular organisms have over unicellular organisms? 1) Their cells reproduce more quickly. 2) Their life processes occur over a shorter time period. 3) Their cells can specialize in certain functions. 4) Their cell division is more efficient.
Answer:
Their cells can specialize in certain functions
Explanation:
This because multicellular organisms are organisms that are made up of several cells which aid it's complexity and lifespan. The cells in muiticellular organisms carries out specialise function or task which give them long lifespan. This long life span is achieved because of various cells that maintain their processes, the cells forms tissues, tissues to organs, organs to system and they all perform different specialized functions.
PLEASE HELP ME! I HAVE NO BRAIN CELLS.
Some minerals are evenly distributed around the planet, while other minerals are quite rare. Why are some minerals so rare and unevenly distributed?
A. Certain minerals form only under high heat and pressure that develop near volcanoes.
B. Certain minerals form only in Earth's crust, so they are difficult to locate.
C. Certain minerals form only in specific climates, and not all climates, are the same around the world.
D. Certain minerals form only in the extreme heat found at the bottom of lakes and rivers.
Answer:
C
Explanation:
Minerals, fresh water, and biosphere resources are distributed unevenly around the planet as a result of past geologic processes. ... Mineral, fresh water, ocean, biosphere, and atmosphere resources are limited, and many are not renewable or replaceable over human lifetimes.
The option (C) is correct. Certain minerals form only in specific climates, and not all climates, are the same around the world.
What are minerals?A mineral is a naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal form, and physical properties. Common minerals include quartz, feldspar, mica, amphibole, olivine, and calcite.
Moreover, the major minerals, which are used and stored in large quantities in the body, are calcium, chloride, magnesium, phosphorus, potassium, sodium, and sulfur. The trace minerals are just as vital to our health as the major minerals, but we don't need large amounts.
Therefore, economic minerals are used in a wide range of applications related to construction, manufacturing, agriculture and energy supply. Economic minerals include: Energy minerals used to produce electricity, fuel for transportation, heating for homes and offices and in the manufacture of plastics.
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Hurry What effect did World War II have on the birth rate in the United States
Answer:
There was a "baby boom" after the war
Explanation:
Arrange the various crop development stages.
growth of the embryo within the seed coat
the emergence of the plumule or shoot
the emergence of the radicle or root
absorption of water and oxygen through the seed coat by the seed
Answer:
A D C B
Explanation:
Answer:Absorption
Growth
The emergence of the radicle or root
The emergence of the plumule or shoot
Explanation:
took thw test