Answer:
need to know what u r asking
Explanation:
The _________ is a large structure that directs the cell's activities.
(please help me)
Answer:
Nucleus
because it's the structure directs all of the cell's activities, including reproduction.
Which is the youngest rock shown in the diagram below?
Answer:
i think its limestone
Explanation:
Which mineral is present is banana?
Answer:
Potassium
Explanation:
They are packed with potassium, a mineral electrolyte that keeps electricity flowing throughout your body, which is required to keep your heart beating. Bananas' high potassium and low sodium content may also help protect your cardiovascular system against high blood pressure,
HOPE THIS HELPS
PLZ MARK BRAINLIEST
Which of the following is NOT a part of ALL cells?
a.ribosomes
b.cell wall
c.endoplasmic reticulum
d.cytoplasm
Answer:
cell wall
Explanation:
Plant cells have cell walls while animals don't. They only gave cell membranes
Answer:
free points! EPIC
Explanation:
What are the two leading causes of CO2 being in the atmosphere?
Arrange the cells in order from least specialized to most specialized.
Answer:
What are the cells?
Explanation:
1) Cells of a Zygote
2) Cells of Blastocyst
3) Cells of Mesoderm
4) Cells of Heart
Which process is happening in the reaction that is shown?
HR
HR
H
H. C N C
Н. С. o
N
0
+
C
c-o-H
H
Н"
'N
1
H
C
II
O
H
O
RH
R H
+
H
TH
A. lonization
B. Hydrolysis
C. Carbonization
D. Dehydration
Answer:
Your answer Is A :)))
Explanation:
Dehydration will be regarded as the result of the given chemical reaction. So, the correct option is D.
What is Dehydration reaction?A dehydration reaction is a chemical process in which the reacting molecule or ion loses water. The opposite of a hydration reaction, dehydration reactions are frequent processes.
Dehydration synthesis is a chemical process that joins two smaller molecules by eliminating atoms from each of them. Organic compounds may be further divided into aliphatic and aromatic compounds based on the structure of hydrocarbons. The generation of new compounds with changes in atom bonding can occur in a variety of chemical processes involving organic molecules. Dehydration will be regarded as the result of the given chemical reaction.
Therefore, the correct option is D.
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I need help with this I don’t know how to use the chart and I need help on questions 2-3
Answer:
2. The relationship between O2 levels and arterial blood shows that the oxygen level was not affected, from rest to exercise to rest.
3. The relationship between O2 levels and venous blood shows that the oxygen level decreased when exercise was being performed, and the oxygen level returned to normal when resting.
Explanation:
Match each word with the correct definition
Atom
Particle
Phase
Scientific Theory
Answer choice:
A) a tiny fragment
B) an explanation
C) the basic unit of an element
D) a unique form of matter in which it can exist
Answer:
here you go
Explanation:
A= Particle
B= Scientific Theory
C= Phase
D= Atom
A radioactive substance has a half-life of 1.25 million years. What is the age of a rock in which 6.25% of the original radioactive atoms remain? 5 million years old 6.25 million years old 3.75 million years old6 2.5 million years old 1.25 million years old 625 thousand years old
Answer:
The age of the rock is 5 million years
Explanation:
Fraction of radioactive substance remaining = 6.25% = 625/10000 = 1/16
Number of half-lives undergone by the substance to leave behind 1/16 of the original sample
1/16 = (1/2) * (1/2) * (1/2) *(1/2)
Therefore, the substance have decayed 4 times
One half=life = 1.25 million years
Four half-lives = 4 * 1.25 million years = 5 million years
Therefore, the age of the rock is 5 million years
explain how ostriches evolved to survive in their environment.
Answer:
Some scientists believe that there were huge fires and the skies were dark and full of pollution due to a meteor exploding and killing off the dinosaurs, and if it's true that this occurred, the Ostrich evolved to be a land animal due to it being too dangerous in the air for them. The long neck may have developed to help them get food that was higher up which is the same speculation for the Giraffe. To stay on land they had to be stronger, bigger, and faster than they were in flight.
Explanation:
Why does a carrot in a hypertonic solution of salt water float compared to a carrot in a hypotonic solution of salt water (which sinks)?
Answer:
Cell membranes are permeable to water, and in the absence of a solute on either side of a membrane, water will move one way as easily as it moves the other. If the outside of the membrane contains a solute, such as salt, the solution correspondingly contains fewer water molecules. To restore equilibrium -- the same number of water molecules on both sides of the membrane -- water flows from inside, and the cell shrinks. On the other hand, if the concentration of solute inside the membrane is greater, water flows into the cell and swells it. This is called osmosis.The turgidity, or stiffness, of a carrot depends on the water content of its cells. When the cells are full of water, they grow large and are packed closely together, making the carrot turgid. Conversely, when the cells lose water, they shrink and the carrot shrivels. That's what happens when you put a carrot in salty water and leave it there. When the concentration of water molecules inside the cells matches that outside, the carrot stops shriveling, and when you remove it from the water and taste it, it has a stronger flavor because it contains less water
A population distribution shows _______.
a.the distribution of age groups within a population
b.the amount of organisms in a unit area
c.the total number of organisms in a population
d.where and in what arrangement organisms are located
Answer:
D
Explanation:
Think about the definition of “distribution “.
Two students completed an experiment to determine if pesticide use at local farms was causing fish kills in a local pond. The steps of the experiment are listed below. Select one location to collect water samples in the pond. Collect a 5-mL water sample at 8 am for two days. Measure the amount of pesticide present in each sample using the same measurement tools. After analyzing their data, the students conclude that pesticide runoff from farms is not causing the fish to die in the pond. Which of these statements best describes why their conclusion is not reliable? The pesticide measurements were the dependent variable. The samples were collected at different times. The samples were only collected for two days. The time of sample collection was not an independent variable.
Answer:
The pesticide measurements were the dependent variable
Explanation:
According to this question, an experiment to determine if pesticide used at local farms was causing fish kills in a local pond was conducted by two students. They followed the following steps:
- Select one location to collect water samples in the pond.
- Collect a 5-mL water sample at 8 am for two days.
- Measure the amount of pesticide present in each sample using the same measurement tools
However, after analyzing the data, they concluded that "runoff from farms is not causing the fish to die in the pond". The students' conclusion is not reliable because THE PESTICIDE MEASUREMENTS WERE THE DEPENDENT VARIABLE.
Note that, the dependent variable in an experiment is the measured variable while the independent variable is the manipulated variable. In this case, the students ought to measure the death RATE OF FISH KILLS as the dependent variable instead. The PESTICIDE is the independent variable of the experiment not dependent variable. This was the reason for the unreliability of the conclusion.
A student used a microscope to observe Elodea submerged in a solution. The student observed the cell cytoplasm pull away from the cell wall and clump together in the center of the cell. Which statement best explains why this occurred? A-The cell was submerged in a hypertonic solution. B-The cell was submerged in a hypotonic solution. C-The cell was submerged in a pure solution. D-The cell was submerged in an isotonic solution.
Answer:
A
Explanation:
The correct answer would be that the cell was submerged in a hypertonic solution.
A hypertonic solution is a solution with a higher concentration of solutes than that of the cytosol of a cell suspended in it. When a cell is suspended in a hypertonic solution, water moves osmotically from the cytosol to the hypertonic solution. This causes the cytoplasm to collapse and the cell becomes flaccid.
The correct option is A.
Answer:
D. The cell was submerged in a hypertonic solution.
Explanation:
are
6. Boiling points and freezing points
examples of
a. chemical properties. C. energy.
b. physical properties. d.matter.
Answer:
Physical properties I think I'm not 100% sure though sorry I just kinda remember learning about this.
I was the maiden who was loved by Zeus. I was transformed into a heifer so that Hera wouldn’t find me. What moon am I?
Answer:
Io.
The moon Io is one of the 4 Jovian moons seen in Galileo's telescope. It is covered with volcanoes. It is named after a Greek god's girlfriend who was turned into a heifer (cow). Hope this helped :)
The statement "I was the maiden who was loved by Zeus, was transformed into a heifer so that Hera wouldn’t find me," is the moon named as Io, a figure in Greek mythology, and it was discovered by Galileo Galilei in 1610 and is named after the mythological character.
What are jupiter's moons?
Io is one of the four largest moons of Jupiter and the fourth largest moon in the solar system. It is named after the mythological character Io from Greek mythology, who was a priestess of Hera and was transformed into a heifer by Zeus to protect her from Hera's jealousy. Io is known for its intense geologic activity, with over 400 active volcanoes and volcanic plumes that can reach heights of over 300 kilometers (190 miles) above the surface. The high levels of volcanic activity are due to tidal forces from Jupiter and its other large moons.
Hence, the correct answer is Io, a figure in Greek mythology, as it was the moon discovered by Galileo Galilei in 1610 and is named after the mythological character.
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Ladybugs were introduced as predators into an
agricultural area of the United States to reduce the
number of aphids feeding on grain crops. This
action is an example of
A. biological control of insect pests
B. preservation of endangered species
C. conservation of natural resources
D. protection of watersheds
Answer:
I believe it would be A,
Fasttttttttttttttttttttttttttttttt 15 points
Answer:
thanks
Explanation:
b is helpin
Answer:
b
Explanation:
Which part of an animal or plant cell contains the cell's genetic information?
ribosome
mitochondria
cytoplasm
nucleus.
Answer:
nucleus
Explanation:
1) How might stem cells be a solution to paralysis caused by spinal injuries? The stem
cells could replace the nerve cells that have died as a result of the injury.
2) What are other potential medical uses?
Answer:
1. A stem cells can be defined as totipotent cells because they have the capacity to self renew themselves.
Spinal cord injury leads to loss of nervous tissue also loss of motor and sensory function, currently there is no such treatment available that can completely repair the spinal cord, but the transplant of stem cells may help in the spinal cord repair.
The stem cells could never replace the nerve cells that died as a result of the injury, stem cells can help the nerve cells to repair.
2.Other medical uses are:
To repair the damaged organs or tissues Correct the genetic defects safely testing of new drug.The energy available to consumers determined by subtracting the energy used by plants from the total energy
transformed by the process of photosynthesis.
А
et your pas
Primary productivity
B
Gross primary productivity
С
Net primary productivity
D
Cellular respiration
Answer:
C. Net Primary productivity
Explanation:
In an the food chain of an ecosystem, energy is constantly being gained and most. Producers are the set of organisms that start the energy cycle via the process of photosynthesis. The gross primary productivity (GPP) is the amount of energy that the producer is able to capture from sunlight during photosynthesis.
The rate at which that captured energy is used to produce chemical organic compounds, which served as food, is called the primary productivity of the producer. However, the NET PRIMARY PRODUCTIVITY (NPP) is the energy available to consumers, which is determined by subtracting the energy used by plants via metabolism, from the total energy transformed by the process of photosynthesis. Hence, mathematically, NPP = GPP - R
Where, R = energy lost via respiration.
Which phrase defines latitude?
A.height above sea level
B. north or south distance from the equator
C. east or west distance from London
D. rise and fall of the land
Answer:
b. is the answer.
Explanation:
I just took the test.
Which two scientists incorrectly named the compound?
A. Adele and Halley
B. Ethel and Kate
C. Kate and Audrey
✓ D. Audrey and Ethel
Answer: D
Explanation:
HELP MEEEEE PLEASEEE ASAPPPPP
how can a small change in energy use make a significant difference in CO2 emissions
Answer:
⬇️
Explanation:
small changes in energy use like switching to water & wind based systems can reduce carbon pollution and create a better energy creating source.
Deforestation is the permanent destruction of forests in order to make the land available for other uses. This process leads to fewer plants being available to conduct photosynthesis. Which of these is a possible effect of deforestation on the process of cellular respiration?
Answer:
A lesser amount of oxygen will be available for cellular respiration
Explanation:
Deforestation can be defined as the permanent removal of trees in forest areas for other land uses (for example, agriculture use). It is well known that deforestation has a negative effect on natural ecosystems. An important proportion of the oxygen in the air is generated by plants during photosynthesis, and it has been estimated that about 30% of the land photosynthesis is due to tropical forests. Aerobic cellular respiration is a metabolic pathway by which organisms use oxygen to produce energy in the form of ATP. In consequence, deforestation represents a serious problem to sustain cellular respiration, and ultimately to sustain life.
Answer:
Less oxygen is available for use during cellular respiration.
Explanation:
I just took the test
The structure of DNA resembles a twisted ladder. Which structural components form the rungs of the ladder?
A deoxyribose sugars
B phosphate groups
C nitrogenous base pairs
D ribosomes
answer is nitrogenous base pairs
Answer:
The ratios of thymine and adenine were similar, as were the ratios of guanine and cytosine.
Explanation:
deoxyribose + phosphate group + thymine
Answer:
C
Explanation:
Which of the following occurs when the tilt of the axis is not toward or away from the sun? A Winter Solstice B Spring Equinox c Summer Solstice d both spring and fall equinox
Answer:
AWinter Solits
Explanation:
Answer:
ROOF ROOF
Explanation:
brainliest.
Gregory is making a turkey for Thanksgiving by roasting it in his oven. The turkey started at a room temperature of 25°C, and the oven was preheated to 175°C. If Gregory accidentally turns off the oven after he places the turkey inside of it, then what will happen to the turkey? *
A)Thermal energy will flow from the oven into the turkey and continue to flow until they reach equilibrium at 100°C or the turkey is removed.
B)Thermal energy will flow from the turkey into the oven and continue to flow until they reach equilibrium at 100°C or the oven is turned off.
C)Thermal energy will flow from the oven into the turkey and continue to flow until the turkey reaches a temperature of 200°C.
D)Thermal energy will flow from the turkey into the oven and continue to flow until the oven reaches a temperature of 200°C.
Answer:
A
Explanation:
The correct answer would be that thermal energy will flow from the oven into the turkey and continue to flow until they reach equilibrium at 100°C or the turkey is removed.
Since there is a difference in the temperature of the two bodies, thermal energy will continue to flow from the body with higher thermal energy to the body with lower thermal energy until an equilibrium is established between the two bodies.
In this case, thermal energy from the oven will continue to flow to the turkey, raising the temperature upward from 25 °C. As the temperature of the turkey is increasing, that of the oven would be decreasing till both the turkey and the oven have the same temperature or when the turkey is removed from the oven.
The correct option is A.
what is the least number of carbon atoms a fatty acid can have.
Answer:
The list number is between 4 and 24
Explanation:
Answer:
4 carbon atoms a fatty acid can have.