The question asks if the samples showed similar cell wall structures based on Gram staining. Gram staining is a widely used technique to differentiate bacteria into two broad categories based on their cell wall structure - Gram-positive and Gram-negative.
Gram-positive bacteria have a thick peptidoglycan layer in their cell wall, which retains the crystal violet stain and appears purple under the microscope. In contrast, Gram-negative bacteria have a thin peptidoglycan layer and an outer membrane that contains lipopolysaccharides, which prevents the crystal violet stain from binding to the cell wall. Instead, Gram-negative bacteria take up the counterstain, safranin, and appear pink. Without knowing the samples in question, it is impossible to say whether they exhibited similar cell wall structures. If all the samples were Gram-positive, they would appear purple under the microscope, indicating a similar cell wall structure. However, if some samples were Gram-positive and others were Gram-negative, they would show different cell wall structures. Furthermore, even among Gram-positive bacteria, there can be variations in the thickness and composition of the peptidoglycan layer, which can affect the staining intensity and appearance under the microscope. Therefore, the answer to whether the samples exhibited similar cell wall structures would depend on the results of their respective Gram staining tests.
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The diagram below shows part of the rock cycle.
Which type of rock does A represent?
Group of answer choices
Metamorphic rock
Rock formed by cooling
Rock formed by compaction
Sedimentary rock
PLEASE HELPPPPP
Answer:
The answer is option B - Rock formed by cooling (Igneous rock)
Explanation:
Volcanic rock (also called extrusive rock) is one type of magmatic rock (igneous rocks) and is the condensated product of extrusive magma after diagenesis and compaction, which differ greatly from sedimentary rocks in forming conditions, environments, and distribution.
TEST - chapter 8
32 of 32
POSSIBLE POINTS: 3
What are the three factors that affect the rate of photosynthesis? (Hint: These are clearly listed toward
the end of your notes).
Answer:
light intensity, carbon dioxide concentration and temperature
though water is a big one too but would be 4th on the list imo
CO2 is an interesting one as it's amounts go down precipitately over say a corn field or other mass of photosynthesizing organisms during the day and increases at night when photosynthesis stops
Explanation:
Which is true about Mitosis?
Mitosis makes 4 new somatic body cells like heart cells
Mitosis makes 2 new somatic body cellshke skin cells
Mitosis makes 2 new sex cells like sperm
How does natural selection lead to an increase or decreased in heritable traits over time in a population?
Answer:
Not a copy and paste answer
Explanation:
When resources are limited in an habitat, organisms with heritable traits favor more survival and reproduction will tend to leave more offspring then other organisms only because of their heritable traits.
Which geological feature would most likely occur at this boundary? (the plates are the same density.)
A) mid-ocean ridge, rift vallyes
B) earthquakes
C) volcanos
D) mountain chains
Answer:
a
Explanation:
What macromolecules would you find in Blazin' wings and celery?
Which of the following options best depicts the process of protein synthesis?
1. protein → RNA → DNA
2. DNA → amino acid → RNA → protein
3. DNA → RNA → protein
4. RNA → DNA → RNA → protein
Question:
What is the oxidized form of the molecule found after glycolysis?
Possible answers:
A. ADP
B. Pyruvate
C. Ether
D. Lactose
E. Phosphate
F. Acetaldehyde
G. TCA
Answer:
What is the oxidized form of the molecule found after glycolysis Pyruvate
Explanation:
Pyruvate
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DNA molecules are the instructions to make what?
-proteins
-carbohydrates
-lipids
-plasmids
Answer:
A
Explanation:
DNA is used to make mRNA, which is then used alongside tRNA to make a polypeptide chain. This chain folds to make a protein.
Frequency and Wavelength Listed in the Item Bank are some key terms and expressions associated with the categories seen in the Venn Diagram. To find out more information about items, some have more details available when you click on them. Drag and drop each item onto the proper area of the diagram. If an item describes more than one category, be sure to place it in the overlapping space. ITEM BANK: Move to Bottom Affects the energy of a wave Decreasing this will increase the energy of a Wave Describes how rapidly a wave oscillates (moves up and down or back and forth) Describes the distance between two back to back identical parts of a wave Increasing this will increase the energy of Unit is Hertz a Wave Unit is meter
Answer:
Frequency:
Unit is Hertz, Increasing this will increase the energy of a wave ,Describes how rapidly a wave oscillates (moves up and down or back and forth)
Both: Affects the energy of a wave
Wavelength: Unit is meter, Decreasing this will increase the energy of a wave, Describes the distance between two back to back identical parts of a wave.
Answer:
Frequency:
Unit is Hertz, Increasing this will increase the energy of a wave ,Describes how rapidly a wave oscillates (moves up and down or back and forth)
Both: Affects the energy of a wave
Wavelength: Unit is meter, Decreasing this will increase the energy of a wave, Describes the distance between two back to back identical parts of a wave
Explanation:
Which best summarizes the composition of the surface of Earth? NEED HELP PLEASE THIS IS DUE TODAY!!!!
A.
Three-fourths of Earth’s surface is land.
B.
One-fourth of Earth’s surface is water.
C.
Earth’s surface contains more land than water.
D.
Earth’s surface contains more water than land.
Answer:
D
Explanation:
Because earths surface is 29% land, and 71% water
1. ATP-ADP cycle talks about energy and has two types; potential energy and kinetic energy. The energy in motion is?
A. Both potential and kinetic energy C. Kinetic energy only
B. Potential Energy only D. none of the choices
2. This is the capacity to do work.
A. Potential Energy C. Chemical Energy
B. Energy D. all of the above
3. What is the product of photosynthesis?
A. Glucose C. Glucose and carbon dioxide
B. Oxygen D. Glucose and oxygen
4. Mitochondria : cellular respiration : : chloroplast : ___________
A. Calvin cycle C. Krebs cycle
B. Chemiosmosis D. photosynthesis
5. From where are heterotrophs directly obtain its energy?
A. the sun C. eating other organisms
B. the sun and eating other organisms D. simple chemicals in the environment
6. NADH & FADH : cellular respiration : : NADPH : ___________
A. phosphorylation C. glycolysis
B. redox reaction D. photosynthesis
7. Light-dependent reaction : energy formation : : Calvin cyle : __________
A. stroma C. ATP synthesis
B. Krebs cycle D. glucose synthesis
8. In the light dependent reaction, what is the first role of the captured energy from photon?
A. to split a water molecule C. to synthesize glucose
B. to energize the electrons D. to produce ATP
9. Plants produce oxygen as a by-product when they photosynthesize. Where is the oxygen come from?
A. from the electron transport chain C. during ATP synthesis
B. by splitting water molecules D. by the chlorophyll
10. Where in the plant cell Calvin cycle take place?
A. thylakoid membrane C. granum
B. thylakoid space D. stroma
11. Which statement correctly describe carbon fixation?
A. the production of carbohydrate molecules from G3P C. the formation of RuBP from G3P molecules
B. the conversion of CO2 to an organic compound D. the use of RUBISCO to form 3-PGA
Does anyone have gce o levels biology matters 2nd edition workbook answers?
no I don't have it as I am studying in 5th grade
Which of the following are examples of a physical property of matter?
Iron (Fe) combines with Oxygen (O) to form rust.
the apple is red in color.
Copper (Cu) conducts electricity.
An apple oxidizes (turns brown) once it is cut and exposed to Oxygen (O).
Nickel (Ni) is magnetic.
Magnesium (Mg) combusts when exposed to Oxygen (O).
Water boils at 100ºC.
Answer:
the apple is red
copper conducts electricity
nickel is magnetic
water boils at 100
Explanation: the rest are chemical properties
Explain how Charles Darwin’s theory of natural selection would account for evolution of populations. Use the following terms in your explanation: mutation, variation, competition, adaptation, fitness
Explanation:
charles darwin proposed thoery of natural selection.he had collected imnumerable specimens of plant and animals.he published concept survival of fittest. while explaining he says that There is always competition for food.only those organism survive which shows adptations in various reasons. it thoery of natural selection.
There are some objections,
1. natural selection is not only factor responsible for evolution.
2. darwin did not mention uesful and useless modifications.
3. There is no explanation about slow and abrupt changes
how does the cell work
A wave hits an object as shown.
Which kind of wave interaction is shown?
absorption
diffraction
refraction
reflection
Answer:
Absorption is the answer
Answer:
refraction
Explanation:
reproducing a sexuality in sexuality will likely use what type of reproduction when the environment is experiencing change asexual be sexual?
Answer:
Asexual
Explanation:
How many molecules are represented?
2Fe(NO3)2
Taking into account the definition of Avogadro's number, 2 moles of Fe(NO₃)₂ contains 1.2046×10²⁴ molecules.
Avogadro's NumberAvogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance.
Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.
Amount of moles in this caseIn this case, you have 2 moles of Fe(NO₃)₂.
Then you can apply the following rule of three: If 1 mole of the compound contains 6.023×10²³ molecules, 2 moles of the compound contains how many molecules?
amount of molecules= (6.023×10²³ atoms× 2 moles)÷ 1 mole
amount of molecules= 1.2046×10²⁴
Finally, 2 moles of Fe(NO₃)₂ contains 1.2046×10²⁴ molecules.
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Anxiety sensitivity is the apparent cause, origin, and development of a particular disease.
Please select the best answer from the choices provided
T
F
Answer:
False
Explanation:
Anxiety is rarely caused by physical diseases.
Anxiety sensitivity is not the apparent cause, origin and development of a specific disease.
What is anxiety sensitivity?It is the fear of sensations or behaviors related to the experience of anxiety, and a misunderstanding of such sensations as dangerous. Some of the sensations of the body associated with anxiety like palpations and nausea are misinterpreted as harmful experiences, which makes the fear or anxiety to intensify.
Anxiety sensitivity is not the apparent cause of a particular disease. It is however, the anxiety or fear, which one gets after getting a specific disease and mistaking it as a harmful experience.
Thus, the given statement is false.
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How are single double and triple bonds similar
Answer:
Double and triple covalent bonds are stronger than single covalent bonds and they are characterized by the sharing of four or six electrons between atoms, respectively.
Explanation:
I need help with this. PLEASE HELP IF YOU CAN!!!
why do all the planets in the solar system orbit the sun in the same direction ?
Answer:
The result of the initial rotation of the cloud of gas and dust that condensed to form the Sun and planets. As gravity condensed the clouds, of angular momentum increased the rotational speed and flattened the cloud out into a disk.
What produces all of the light in the universe?
Answer:
Source of Light in UniverseAlthough the Sun doesn't light up the other stars, it does provide the daylight here on Earth; and the moon and planets we see are illuminated by that same sunlight. All stars produce light (and other kinds of energy) through nuclear reactions, using the energy stored in the tiny nucleus at the center of atoms.Explanation:
THANKS❤❤What is NOT TRUE about the cell membrane
Phospholipid bilayer
It controls what enters and leaves the cell
Semipermeable
Contains digestive enzymes
angie's mom can roll her tongue will angie be more likely to have that ability or more likely not to have that ability
Answer:
50 50 chance
Explanation:
7.Glycolysis is the process of _______.
A. adding 4 ATP molecules to produce pyruvate C. glucose molecule oxidation to form FADH and NADPH
B. breaking the glucose into 2,3 carbon molecule D. breaking the glucose molecule to produce acetyl CoA
9. The enzymatic redox reaction process in Krebs Cycle produces what molecule?
A. Cytochrome oxidase C. Oxaloacetate
B. Succinate Acetate D. Oxaloxide
10. During electron transport chain, energy from the electrons of NADH and FADH2 is used in the process
chemiosmosis to __________.
A. reduce NADH to NAD+ C. phosphorylate ADP to ATP
B. reduce FADH2 to FAD D. pump hydrogen ions across the membrane
Answer:
7. D. breaking the glucose molecule to produce acetyl CoA
8. C. Oxaloacetate
10. phosphorylate ADP to ATP
Explanation:
Cellular respiration is the metabolic process by which energy in form of ATP is obtained in a cell. However, it occurs in three major stages namely: glycolysis, Krebs cycle and electron transport chain (oxidative phosphorylation).
- Glycolysis is the process where glucose is broken down to produce pyruvate, which is then processed into acetyl coA before it enters the next stage (Krebs cycle).
- Krebs cycle is the stage where series of REDOX reactions occur to produce OXALOACETIC ACID as a final product, which accepts acetyl coA for another cycle to begin.
- Electron transport chain (ETC) uses the energy derived from the electron carriers energy NADH and FADH2 to phosphorylate ADP to ATP in a process called CHEMIOSMOSIS.
Which is a black rat snake considered?
carnivore
herbivore
omnivore
Answer:
Carnivore
Explanation:
Carnivore is an animal that eats meat.
Omnivore eats both plants and meat.
Herbivore only eats plants.
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The energy produced by respiration is the in the form of adenosine triphosphate or ____________
Answer:
ATP
Explanation:
Adenosine triphosphate
PHET Energy Skate Park Simulation .Consider this equation: gravitational potential energy = mgh. Which of those variables is changing as the skater moves up and down the track?
Answer:
h - height
Explanation:
gravitational potential energy = m * g * h
m stands for mass. Mass doesn't change in physics
g stands for gravitational acceleration. It is a constant.
h stands for height. When the skater moves up and down the track the height from the ground changes. Therefore this variable does change.
In the equation gravitational potential energy = mgh, the variable that is changing as the skater moves up and down the track is the variable h, which represents the height or vertical position of the skater.
As the skater moves up the track, the height increases, resulting in a higher value for h. Conversely, as the skater moves down the track, the height decreases, leading to a lower value for h.
The other variables in the equation, m (mass) and g (acceleration due to gravity), typically remain constant unless specified otherwise. Therefore, the changing variable in this equation as the skater moves up and down the track is the height (h).
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