Answer:
The correct answer is - the different temperatures of incubators.
Explanation:
An independent variable is a variable in a study or research which is manipulated or changed to check or find the effect on the dependent variable. The independent variable is the only factor that changes in research while other factors remain constant that can affect the result in the study.
In this case or study, there is the only factor that is manipulated is the temperature of incubators is manipulated to see the effect of temperature on the number of microbial colonies. Thus, the different temperatures of incubators is the independent variable here.
What causes the earths tides; describe the conditions for the largest tides?
Answer:
Earth's rotation and the gravitational pull of the sun and moon create tides on our planet. Because the sun is so much larger than the moon (27 million times more masssive), it has a much bigger graviational pull on Earth.
Think a hero in your life what is it similar to Martin Luther king?
Answer: von goh
Explanation: piant
Answer:
my (sister or brother ) they stuck up for me when in the right and help make me see the bigger/ better picture
Explanation:
mom she stands by me no matter what she's there for me when im in trouble and most of the time tells me to choice non volience
If female ants can reproduce why do they need a Queen?
Answer:
Queen ants have two main responsibilities first, Queens are the founders of all ants colonies. A queen and will leave the colony she was born into a mate with flying male ants. After mating, she will scurry off to find a new location for her nest, lose her wings and lay her first hatch of eggs.
Fill in the blank
Fresh water lakes are used to help store fresh water for flood control, irrigation, hydroelectric power and ___________
A. recreation (boating, fishing, swimming)
B. desalination
C. waste disposal
Fresh water lakes are used to help store fresh water for flood control, irrigation, hydroelectric power and recreation.
What is desalination?
Desalination is the process by which excess dissolved mineral salt is removed from barkish water to make it suitable for human use and agriculture.
According to the options:-
A. recreation (boating, fishing, swimming)= fresh water can be used for recreation.
B. desalination = it cannot be done on fresh water.
C. waste disposal= disposal of waste in fresh water will cause water pollution.
Learn more about desalination here: brainly.com/question/934626
#SPJ2
Describe two applications each of hydrodynamics and aerodynamics.
Question 1 of 10
Match the layer with its characteristic.
Mantle
?
Ranges from 6 km to 70
km thick
Moho Barrier
?
?
Convection here leads to
earthquakes
Core
2
Has a liquid and solid layer
Crust
?
Separates the crust and
mantle
Answer:
Crust- ranged from 6km to70km thick .
mantle- convection here leads to earthquakes.
Core -has a liquid and soild layer
Moho barrier- separates the crust and mantle.
Explanation:
HOPE this helps
The layers of the earth are differentiated based on their composition and occurrence. The crust is 6 -70 km thick, and the mantle is where the convection occurs. Thus, the matches are 1. c, 2. d, 3. b, and 4. a.
What are the layers of the earth?Earth has many different layers based on their arrangements and occurrences. The crust is the first layer of the earth where humans and other organisms live and ranges from 6 -70 km thick. It is followed by the Moho barrier.
The Moho barrier is the layer that separates the crust from the mantle and is followed by the mantle layer where the convection in the tectonic plates leads to earthquakes.
The deepest and the innermost layer is the core where the solid and liquid hot gases are found at very high temperatures. It is very hot and composed of iron and nickel.
Therefore, the matches are 1. c, 2. d, 3. b, and 4. a.
Learn more about the layers of the earth here:
https://brainly.com/question/7744748
#SPJ2
The formation and action of angiotensin II can be summarized as follows: It is synthesized either when blood pressure is ____________ or the ____________ division is activated. It causes a(n) ____________ in resistance, ____________ in fluid output (which helps to maintain blood volume and blood pressure), and an increase in blood ____________ (if fluid intake occurs
Answer:
low, sympathetic, an increase, decrease, pressure
Explanation:
Angiotensin II is a peptide hormone whose primary function is to increase blood pressure by different mechanisms of action including vasoconstriction and sympathetic nervous stimulation. This hormone is produced by the action of the enzyme angiotensin-converting enzyme (ACE). Angiotensin II may act on the central nervous system (CNS) to increase antidiuretic hormone (ADH) levels, and on the arterial smooth muscle cells to trigger vasoconstriction. Angiotensin II induces the release of ADH and aldosterone hormones in order to increase blood pressure. When blood pressure returns to normal values, circulating Angiotensin II levels are decreased by negative feedback.
Dopamine, norepinephrine, and acetylcholine are all hormones excreted by the endocrine glands hormones excreted by the endocrine glands.
a. secretions of the exocrine glands secretions of the exocrine glands.
b. drugs used in the therapeutic treatment of memory disorders drugs used in the therapeutic treatment of memory disorders.
c. enzymes involved with the degradation of interneuron signals enzymes involved with the degradation of interneuron signals.
d. neurotransmitters that excite or inhibit a neural signal across a synapse
Answer:
d. neurotransmitters that excite or inhibit a neural signal across a synapse
Explanation:
Neurotramniters are molecules that transmit chemical messages from nerve cells by traveling across the synapse to target cells. Some of the most important neurotransmitters include acetylcholine, norepinephrine, dopamine, gamma-aminobutyric acid (GABA), glutamate, histamine and serotonin. Norepinephrine is a neurotransmitter synthesized from dopamine which is involved in the regulation of stress response, sleep, and blood pressure. Norepinephrine, also known as noradrenaline, is an important neurotransmitter involved in stress response and exercise. Finally, acetylcholine is a neuromodulator of the autonomic nervous system involved in attention responses, memory and motivation.
2. Name a microbe that lacks a cell wall and would find hypotonic environments detrimental.
Answer:
I so I am also a bit confused, but I hope this could answer your question!
Explanation:
The bacteria possess a cell wall composed of peptidoglycan molecule formed by the amino acids called murine. The bacterial cell wall helps in the survival of the bacteria in some extreme condition like when placed in a hypotonic solution.
The hypotonic solution is formed when it has low solute concentration and high water amount when compared. When the bacterial cell will be placed in hypotonic solution then the water will move inside the cell down the concentration gradient as a result of which the bacterial cell will swell but will not burst.
This happens as the cell wall contains expansin protein which allows the cell wall to expand and provides rigidity to the cell.
Answer:
1. Photoautotroph
2.Protozoa
3. Passive transport uses no energy and molecules move from high to low concentrations. Active transport uses energy to move from low to high concentrations.
4. Synergism
Explanation:
Good luck on your assignment
Why does Type 1 diabetes result in high blood pressure?
HELP!!!
Explanation:
Some diabetics neglect to take insulin doses specified for them throughout the day or follow some wrong practices that reduce its effectiveness, which causes a decline in its role in processing glucose to produce the energy needed to perform daily activities, which leads to its deposition in the bloodstream.
Below is data for 250 offspring mice, as produced in a laboratory.
A 5-column table has 4 rows. The first column has entries Predicted fraction, predicted percentage, simulated fraction, simulated percentage. The second column is labeled Black fur and black eyes with entries 9/16, 56.25 percent, 155/250, 62 percent. The third column is labeled Black Fur and Red Eyes with entries 3/16, 18.75 percent, 51/250, 20.4 percent. The fourth column is labeled White Fur and Black eyes with entries 3/16, 18.75 percent, 44/250, 17.6 percent. The fifth column is labeled White fur and red eyes with entries 1/16, 6.25 percent, 20/250, 8 percent.
Notice that the predicted percentages and laboratory percentages are not the same. These differences most likely result from
Answer:
expected or c on edge 2021
Explanation:
Notice that the predicted percentages and laboratory percentages are not the same. These differences most likely result from "expected randomness."
In a nerve cell the nucleus and dendrites can be found at the _____________ . *
reflex.
the brain.
cell body.
the axon.
WHICH ONEEE
Answer:
Cell body
Explanation:
could some help me answer these questions using a yes or no answer?
What would you look for under a microscope on a slide with meiotic cells if you wanted to identify metaphase I
Answer:
This question lacks options, options are: A) A visible nuclear envelope B) Separated sister chromatids at each pole of the cell C) Tetrads lined up at the center of the cell D) A synaptonemal complex E) A cleavage furrow. The correct answer is C.
Explanation:
During Metaphase I, the chromosomes line up at the midpoint or equator between the poles of the cell and are found at their thickest and shortest structure, that is, the tetrads line up at the equator of the cell. They are identified as two double longitudinal sister chromatids. In animals and plants, the chromatids are connected (at their centromeres) to the fusiform apparatus, which has formed between the two centrioles located at the poles of the cell. In many plants, the centrioles are absent. However, the spindle is still present and the plant chromosomes are attached similarly to the microtubule fibers of the spindle.
Which example best demonstrates diffusion?
A. cellular movement
B. an amoeba engulfing a bacterium
C. the dispersal of dye in a beaker of water
D. a contractile vacuole removing excess water
A contractile vacuole removing excess water is the correct answer.
What is diffusion?Diffusion is defined as the movement of particles from a region of high concentration to a region of lower concentration. Diffusion occurs in both liquids and gases which is an important process for living organisms.
In contractile vacuole, water moves from higher concentration region to lower so we can conclude that a contractile vacuole removing excess water is the correct answer.
Learn more about diffusion here: https://brainly.com/question/94094
How does the ozone layer affect earth? Why should people be concerned it has a hole.
17. Which of these processes is the result of the motion of particles in a gas or liquid?
A. conduction
B convection
C. insulation
D. radiation
Answer:
B
Explanation:
Which substance most likely consists of atoms that are able to slide past one another?
ice
honey
wood
cotton
Answer:
Ice
Explanation:
some Atoms in ice allow it to slide, and water will stop the friction from accruing as strongly, if you will.
composition of water yam
Which of the following is not function of membrane protein :A-anchors for cytoskeleton element/B-receptor for external chemical signals/c-transport proteins responsible for the movement of ions and other solute /D-enzyme that catalyzes reaction associated with membrane
Answer:
c
Explanation:
act as carrier molecules for various solutes
the process of living organisms staying the same
Answer:
Explanation:
All species of living organisms, from bacteria to baboons to blueberries, evolved at some point from a different species. Although it may seem that living things today stay much the same, that is not the case—evolution is an ongoing process. The theory of evolution is the unifying theory of biology, meaning it is the framework within which biologists ask questions about the living world.
Answer:
Living organisms have an ability to keep a stable internal environment and they maintain to have a balance inside their cells.
Explanation:
Reproduction is the process by which organisms make more of their own kind from one generation to the next.
Metabolism is the sum of all the chemical reactions carried out in an organism. heredity is called a gene.
Where should you measure volume of liquid?
Answer:
Not sure if ur question is how or where but u measure the volume of a liquid by using a method called displacement
Explanation:
(30 points!!!!)
Which scenario describes relationship of mutualism 
A. A polar bear catches a seal for dinner
B. Birds feed off the insects that are stirred up from the grasses as cattle move through
C. Yes oxpecker birds eat parasitic ticks off the backs of zebras
D. A taper latches it’s self in the intestines of a rat feeding off the nutrients eaten by the rat
Answer:
c i think and thats 15 points
c is the answer. i say this because the oxpecker is eating off of the zebra.
When increasing the size of muscles or building muscle mass ____________. Group of answer choices muscle soreness indicates the muscles are growing delayed onset muscle soreness indicates the muscles are growing lactic acid build up triggers muscles to grow micro tears signal the muscles to grow
Answer:
A. soreness indicates the muscles are growing
D. micro tears signal the muscles to grow
Explanation:
Muscle soreness is one of the indication of muscles are growing as while doing exercise, some inflammation takes place to get bigger and stronger muscles. Some pain signals are sent by the body to make it feel soreness after intense exercise.
Micro tears signal also indicates muscles growth as after intense workout, a certain amount of soreness is felt by our body and these micro tear signals to repair and replenish the muscle tissue that eventually accumulate to form muscle mass.
Hence, the correct answers are: "A. and D.".
John Terborgh, tropical ecologist at Duke University, asserts that in order to save tropical forests, citizens of industrial nations are going to have to pay developing countries. Do you agree
Answer:
I do agree
Explanation:
As a personal opinion, I do agree with this statement. Citizens of developing countries use these rain forests for many reasons. One of which is for survival they cut down and use what they need in order to gather the resources that they need and build their habitats. This goes slowly destroying the rainforests. The other reason is that these citizens many times sell the rights to the rainforest land to mining companies that ultimately destroy the rainforest for its resources. The only way to prevent both of these from happening is by paying these developing countries to protect the rainforest instead of profiting from it.
Could solar energy applications be effective anywhere in the world? Why or why not?
Answer: No because of the it is a natural resource it doesn't expel and thing after used that is harmful to the environment.
Explanation:
The chart shows a population pyramid for the fictional county of Stanistan Which conclusion is a
Congo (Brazil)
YLE
FEE
correct about Stanistan?
lo 21
Pation in )
3.5.
Crew Trential
Stanistan's population is growing very rapidly
Its population structure suggests that it is a modern industrialized country
There is a long life expectancy in Stanistan, as most individuals survive into their 70s or 80s
There are probably not many problems with poverty or limited resources in Stanistan, as there are many
adults for each child
Answer According to its developer, the YLE is a comprehensive assessment tool which makes accurate and fair assessment and has a positive impact on a child's future.
Explanation:
Answer:
It's A
Explanation:
I got it wrong on usa testprep
How do molecules within organisms become rearranged and used as energy sources?
Answer:
in a chemical reaction, no atom is destroyed nor created
Describing the Death of Stars Which statements describe the death of stars? Check all that apply. A star's final stages of life depend on its mass Stars die when they run out of fuel When a star starts to die, its core expands. The outer portion of the star contracts. All stars become black holes when they die Intro
Answer:
A. A star’s final stages of life depend on its mass.
B. Stars die when they run out of fuel.
Explanation:
A star's life cycle is determined by its mass. ... Over time, the hydrogen gas in the nebula is pulled together by gravity and it begins to spin. ... It is now a main sequence star and will remain in this stage, shining for millions to ... When the hydrogen supply in the core begins to run out, and the star is no longer supported.
In the process of cellular respiration after electrons are passed through the electron transport chain explain what chemical is produced, what the electrons are passed to at the end of the chain, and explain how this process happens, be sure to name some structures used and the other part of the atom involved and what element this part comes from.
Answer:
Introduction
Cellular respiration is one of the most elegant, majestic, and fascinating metabolic pathways on earth. At the same time, it’s also one of the most complicated. When I learned about it for the first time, I felt like I had tripped and fallen into a can of organic-chemistry-flavored alphabet soup!
Luckily, cellular respiration is not so scary once you get to know it. Let's start by looking at cellular respiration at a high level, walking through the four major stages and tracing how they connect up to one another.
Steps of cellular respiration
Overview of the steps of cellular respiration.
1. Glycolysis. Six-carbon glucose is converted into two pyruvates (three carbons each). ATP and NADH are made. These reactions take place in the cytosol.
2. Pyruvate oxidation. Pyruvate travels into the mitochondrial matrix and is converted to a two-carbon molecule bound to coenzyme A, called acetyl CoA. Carbon dioxide is released and NADH is made.
3. Citric acid cycle. The acetyl CoA combines with a four-carbon molecule and goes through a cycle of reactions, ultimately regenerating the four-carbon starting molecule. ATP (or, in some cases, GTP), NADH, and FADH_2 are made, and carbon dioxide is released. These reactions take place in the mitochondrial matrix.
4. Oxidative phosphorylation. The NADH and FADH_2 produced in other steps deposit their electrons in the electron transport chain in the inner mitochondrial membrane. As electrons move down the chain, energy is released and used to pump protons out of the matrix and into the intermembrane space, forming a gradient. The protons flow back into the matrix through an enzyme called ATP synthase, making ATP. At the end of the electron transport chain, oxygen accepts electrons and takes up protons to form water.
Overview of the steps of cellular respiration.
Glycolysis. Six-carbon glucose is converted into two pyruvates (three carbons each). ATP and NADH are made. These reactions take place in the cytosol.
Pyruvate oxidation. Pyruvate travels into the mitochondrial matrix and is converted to a two-carbon molecule bound to coenzyme A, called acetyl CoA. Carbon dioxide is released and NADH is made.
Citric acid cycle. The acetyl CoA combines with a four-carbon molecule and goes through a cycle of reactions, ultimately regenerating the four-carbon starting molecule. ATP (or, in some cases, GTP), NADH, and FADH_2 are made, and carbon dioxide is released. These reactions take place in the mitochondrial matrix.
Oxidative phosphorylation. The NADH and FADH_2 produced in other steps deposit their electrons in the electron transport chain in the inner mitochondrial membrane. As electrons move down the chain, energy is released and used to pump protons out of the matrix and into the intermembrane space, forming a gradient. The protons flow back into the matrix through an enzyme called ATP synthase, making ATP. At the end of the electron transport chain, oxygen accepts electrons and takes up protons to form water.
During cellular respiration, a glucose molecule is gradually broken down into carbon dioxide and water. Along the way, some ATP is produced directly in the reactions that transform glucose. Much more ATP, however, is produced later in a process called oxidative phosphorylation. Oxidative phosphorylation is powered by the movement of electrons through the electron transport chain, a series of proteins embedded in the inner membrane of the mitochondrion.
These electrons come originally from glucose and are shuttled to the electron transport chain by electron carriers \text{NAD}^+NAD
+
start text, N, A, D, end text, start superscript, plus, end superscript and \text{FAD}FADstart text, F, A, D, end text, which become \text{NADH}NADHstart text, N, A, D, H, end text and \text{FADH}_2FADH
2
start text, F, A, D, H, end text, start subscript, 2, end subscript when they gain electrons. To be clear, this is what's happening in the diagram above when it says ++plus \text {NADH}NADHstart text, N, A, D, H, end text or ++plus \text{FADH}_2FADH
2
start text, F, A, D, H, end text, start subscript, 2, end subscript. The molecule isn't appearing from scratch, it's just being converted to its electron-carrying form:
\text {NAD}^+NAD
+
start text, N, A, D, end text, start superscript, plus, end superscript ++plus 2 e^-2e
−
2, e, start superscript, minus, end superscript ++plus 2 \text H^+2H
+
2, start text, H, end text, start superscript, plus, end superscript \rightarrow→right arrow \text {NADH}NADHstart text, N, A, D, H, end text ++plus \text H^+H
+
start text, H, end text, start superscript, plus, end superscript
\text {FAD}FADstart text, F, A, D, end text ++plus 2e^-2e
−
2, e, start superscript, minus, end superscript ++plus 2 \text H^+2H
+
2, start text, H, end text, start superscript, plus, end superscript \rightarrow→right arrow \text {FADH}_2FADH
2