Answer:
The Cell Wall of Bacteria
Bacteria are protected by a rigid cell wall composed of peptidoglycans.
LEARNING OBJECTIVES
Recall the characteristics of a bacterial cell wall
KEY TAKEAWAYS
Key Points
A cell wall is a layer located outside the cell membrane found in plants, fungi, bacteria, algae, and archaea.
A peptidoglycan cell wall composed of disaccharides and amino acids gives bacteria structural support.
The bacterial cell wall is often a target for antibiotic treatment.
Key Terms
binary fission: The process whereby a cell divides asexually to produce two daughter cells.
image
Bacterial Cell Wall: The anatomy of bacterial cell structure.
Bacterial cells lack a membrane bound nucleus. Their genetic material is naked within the cytoplasm. Ribosomes are their only type of organelle. The term “nucleoid” refers to the region of the cytoplasm where chromosomal DNA is located, usually a singular, circular chromosome. Bacteria are usually single-celled, except when they exist in colonies. These ancestral cells reproduce by means of binary fission, duplicating their genetic material and then essentially splitting to form two daughter cells identical to the parent. A wall located outside the cell membrane provides the cell support, and protection against mechanical stress or damage from osmotic rupture and lysis. The major component of the bacterial cell wall is peptidoglycan or murein. This rigid structure of peptidoglycan, specific only to prokaryotes, gives the cell shape and surrounds the cytoplasmic membrane. Peptidoglycan is a huge polymer of disaccharides (glycan) cross-linked by short chains of identical amino acids (peptides) monomers. The backbone of the peptidoglycan molecule is composed of two derivatives of glucose: N-acetylglucosamine (NAG) and N-acetlymuramic acid (NAM) with a pentapeptide coming off NAM and varying slightly among bacteria. The NAG and NAM strands are synthesized in the cytosol of the bacteria. They are connected by inter-peptide bridges. They are transported across the cytoplasmic membrane by a carrier molecule called bactoprenol. From the peptidoglycan inwards all bacterial cells are very similar. Going further out, the bacterial world divides into two major classes: Gram positive (Gram +) and Gram negative (Gram -). The cell wall provides important ligands for adherence and receptor sites for viruses or antibiotics.
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That is a big answer. ^ but yeah its cell wall.
After Burt forced a smile on his face for thirty minutes, he actually started to feel the emotion of happiness. What theory of emotion was Burt displaying?
A. Schachter-Singer Theory
B. James-Lange Theory
C. Cannon-Bard Theory
After Burt forced a smile on his face for thirty minutes, he actually started to feel the emotion of happiness. The theory is Schachter-Singer Theory.
What is Schachter-Singer Theory?Schachter-Singer Theory is a theory of emotion.
It says that your emotions are triggered by your physical activity.
It is also known as two-factor theory.
Thus, the correct option is A. Schachter-Singer Theory.
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How and where is NADPH produced?
Answer:
NADPH is formed on the stromal side of the thylakoid membrane, so it is released into the stroma. In a process called non-cyclic photophosphorylation (the "standard" form of the light-dependent reactions), electrons are removed from the water and passed through PSII and PSI before ending up in NADPH.
what is the cell theory
Answer:
a theory in biology that includes one or both of the statements that the cell is the fundamental structural and functional unit of living matter
Do you agree or disagree,cutting down forest is worthwhile even though it brings a lot of economical benefits. Remember these countries need extra GDP
Answer:
I disagree there are definetly more things that can up a country's GDP than killing off animals that are helpless and important to life itself there is no need be continously killing trees and destroying habitats. You can start more businesses or even try to find another source of GDP. But the simple truth is that it is wrong and unnessecary
Explanation:
brainiest plz
Only laboratories BSL-3 and higher require fire extinguishers, emergency showers and eye wash stations.
Answer:
false
Explanation:
Fire extinguishers, emergency showers and eye wash stations are basic safety elements that must be present in all laboratories, regardless of their classification. This is because these are essential elements for common accidents in laboratories and can be easily solved with their presence.
4. Which of the following taxonomic groups would contain plants with the greatest amount of
variety and differences?
A Kingdom
B Phylum
C Order
D Family
What type of mutation has occurred in the following example? Original DNA sequence С т с Original amino acid sequence Glutamic acid Mutated DNA sequence C T C New mRNA sequence G A G New amino acid Glutamic acid GG с Proline G G G С С С Proline T A G Isoleucine T A G A U с Isoleucine G C A Arginine G С A С G U Arginine A) frameshift mutation (due to deletion) B) nonsense mutation C) silent mutation
Answer:
b
Explanation:
The hours of daylight can vary greatly because of latitude. How would being near the equator shape the amount of sunlight per day in those countries? Explain your answer.
Answer:
Explanation:
The amount of daylight that is received is directly proportional to how close the sun is to each hemisphere. This happens due to Earth's inclined axis which changes as the Earth rotates and causes more daylight in the Northern or Southern hemispheres which is when summer starts in each. That being said the Equator is the only location that has an even amount of sunshine all year round. This is why it is always hot and Equator cultures only recognize dry and wet seasons but still consider it summer all year round.
Describe the energy transformations that occur when you use energy to
power your computer? (At least 4 sentences)
PLEASE HELP!!
Answer:
How is energy transformed in computers? Mostly from electrical to heat. The electrical may come from chemical in the form of a battery. A very small proportion of the electrical energy is converted to light (the screen) and sound, and some kinetic in the rotation of fans or hard disk platters.
Explanation:
Additional observations were made on day 21, and no yellow-leaved seedlings were found alive in either dish. This is most likely because
Answer: Inability to convert the light energy into chemical energy.
Explanation:
The above question relates to the issue regarding photosynthesis. Plants contain chlorophyll and this helps them in the conversion of the light energy that they get from the sunlight into a chemical energy.
In the case that no yellow-leaved seedlings were found alive in either dish, the reason for this will mainly be because the plant was not able to convert the light energy into chemical energy.
Is there anyone know what’s the answers?
Answer:
1. microorganisms
2. antibiotics
3. wine
4.yoghurt
5.aerobic respiration
6.Microbial spoilage
How much longer is an average day in May compared to October?
i give branily
Answer:
There is no difference there are 31 days in May and October.
Explanation:
Which list correctly identifies characteristics that protists share with animals?
• Motile
F
H
• Reproduce
sexually
• Photosynthetic
• Eukaryotic
• Motile
• Reproduce
sexually
• Motile
• Multicellular
• Photosynthetic
G
• Motile
• Prokaryotic
• Multicellular
J
Answer:
H. • Eukaryotic
• Motile
• Reproduce sexually
Explanation:
Hope this helps
The list which correctly identifies characteristics that protists share with
animals include:
Motile Reproduce sexuallyProtists are primarily unicellular organisms and an example is green algae,
amoeba, euglena etc. The animals among them are motile and move from
one place to another in search of food.
They also perform sexual reproduction in which two nuclei fuses together to
form a zygote for fertilization to take place and produce new offspring.
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View the Precipitation Map of Washington, then view the Shaded Relief Map of Washington. The first map shows how much rain falls in different regions of Washington state. The second map gives you information about those regions. Using both maps, what can you tell about the regions in Washington that get the most or the least amount of rain?
Answer:
Explanation:
In the Precipitation Map of Washington, the dark orange section indicates low rainfall in the region. Using the Shaded Relief Map of Washington, you can tell that this area is flat, possibly a plain. These areas normally don't get a lot of moisture. The Washington Precipitation Map has regions that are dark purple and dark orange. This means that they both get a lot of rain every year. If you look at these areas on the Washington Shaded Relief Map, you can see that these areas with a lot of rainfall are mountainous.
On the Washington Precipitation Diagram, purple/blue means more rain, and orange/red means less rain. Washington's Shaded Relief Map shows the mountains (br)
Answer:
In the Precipitation Map of Washington, the dark orange section indicates low rainfall in the region. Using the Shaded Relief Map of Washington, you can tell that this area is flat, possibly a plain. These regions typically don't receive a lot of rain. The Precipitation Map of Washington has areas that are dark purple and dark green. This indicates that they both receive a lot of rainfall every year. If you look at these areas on the Shaded Relief Map of Washington, you can tell that these areas with a lot of rainfall are mountainous.
On the Precipitation Map of Washington, purple/blue means more rain, and orange/red means less rain. The Shaded Relief Map of Washington shows mountains (brown), valleys, plateaus, and canyons. Areas that are flat are smooth on the map. Areas with steep slopes and mountains look rougher.
Explanation:
what is a difference between systemic and pulmonary circulation
Answer:
Pulmonary circulation moves blood between the heart and the lungs. ... The oxygenated blood then flows back to the heart. Systemic circulation moves blood between the heart and the rest of the body.
Explanation:
Describe temperate continental climates.
Why are there often delays in bringing GM-foods into the market? Select all possible answers.
Opposition from ecological groups
The food market is over-saturated
GM foods always cost more than unmodified foods
Farmers and local people may be mistrustful of the GMO
Answer:
A. or D. but all work. which is most correct is specific to the reading.
The reason of delay in bringing the GM-foods into the market is
Opposition from the ecological groups.Mistrustful by the Farmers and local people.Reasons of delay:The GMO ability is to escape and establishment of the engineered genes into the wild populations.
It is because of the biodiversity, land toxication, crops toxication, culture of the food, health and safety, misrepresentation, misleading people by the trust, not with the ecological groups, etc.
Hence, The reason of delay in bringing the GM-foods into the market is
Opposition from the ecological groups.Mistrustful by the Farmers and local people.Learn more about GM foods here: https://brainly.com/question/14632312?referrer=searchResults
how does increased physical activity help prevent weight gain, please include atp, energy, cellular respiration, co2 and h2o
It helps prevents because whenever you are undergoing physical exertion your body needs more energy and energy is stored in fat
Based on the empirical data and information you have learned about
ecosystems and the services they provide, do you support or refute the claim that increases in wetlands, forested buffers, and submerged aquatic vegetation will result in increases in the blue crab population and other fisheries over time? Include appropriate evidence andscientific reasoning to support your claim.
Answer:
Yes.
Explanation:
Yes, I support the claim that increases in wetlands, forested buffers, and submerged aquatic vegetation will result in increases in the blue crab population and other fisheries because these wetlands, forested buffers and submerged aquatic vegetation provides habitat and food to the crabs and other fishes. Due to availability of suitable environment and more food availability to the crab and fishes which leads to increase their population.
Which characteristics are common to most salamanders? Check all that apply.
They undergo internal fertilization.
They lose their tails as adults.
They have wet, moist skin.
They have long, strong legs.
They begin life with gills.
Answer:
Its C,D,A
Explanation:
:)
what is the definition of Paramecium?
Answer:
A Paramecium is a single-celled freshwater animal that has a characteristic slipper-like shape and is covered with cilia.
Explanation:
10. The orbit of the Moon around Earth is about:
a 25 days
6. 28 days
C. 29.5 days
d. 30 days
Help plz
In the course of natural selection, best adapted organisms
tend to______and therefore produce ______offspring.
A: die off, many
B: overproduce, abnormal
C: survive, more
D: die off, few
JUST THE LETTER CHOICE
Answer:
C: survive, more
Please give me brainlyest
Answer:
C
Explanation:
If organisms are best adapted for the enviorment then they will survive so that means that they will also be the ones to pass on these advantagous apatations to its offspring.
Which of the following cell structures is the site of photosynthesis?
A. Golgi apparatus
B. Mitochondria
C. Chloroplasts
D. Centrioles
Answer:
C is the correct answer.
are corks prokaryotic or eukaryotic cells?
Answer:
Cork cambium (pl. cambia or cambiums) is a tissue found in many vascular plants as part of the periderm. The cork cambium is a lateral meristem and is responsible for secondary growth that replaces the epidermis in roots and stems.
Comparison of Eukaryotes vs. Prokaryotes. Play media. 3D animation of aprokaryotic cell that shows all the elements that compose it. A prokaryote is a single-celled organism that lacks a membrane-bound nucleus (karyon), mitochondria, or any other membrane-bound organelle.
A eukaryote is any organism whose cells contain a nucleus and other organelles enclosed within membranes. Eukaryotes belong to the taxon Eukarya or Eukaryota
Explanation:
Corks are a type of plant part that is eukaryotic cell having well developed nucleus.
What are corks?Cork cells are dead cells found in the bark of stems. They appear hexagonal or pentagonal under a microscope. In 1665, Robert Hook used a microscope for the first time to examine cork cells.
Plant cells that mature into mature cork cells form the protective water-resistant tissue in the outer covering of stems or trunks.
Cork cells are genetically programmed not to divide and, as a result, are considered dead cells.
Eukaryotes are organisms with nuclei and other membrane-bound organelles. Eukaryotic organisms include all animals, plants, fungi, and protists, as well as the majority of algae.
Thus, it can be concluded that the corks are eukaryotic cells.
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Water can be considered water pollution if man changes the temperature.
True or false ?
Answer:
False
Explanation:
in which months is the average precipitation above 150mm in the picture above.
HELP 6TH GRADE DUE TODAY!!!!!!
Answer:
April, May, June, July, August, September, November
Explanation:
Answer:
None
Explanation:
The chart has a label on the right and the blue bars represent the amount of precipitation. None of them pass the 150mm mark. If none isn't an option, can you lmk in the comments? Thx
Hope this helps!
Can the type of light make a difference in photosynthesis?
Answer:
yes
Explanation:
the light that a plant needs to be able to grow, has to be specific with its uv among other things
The type of light can easily make the difference in photosynthesis.
What is photosynthesis?Photosynthesis is defined as the process through which plants employ sunshine, water, and carbon dioxide to produce oxygen and sugar energy.
It can also be defined as the conversion of light energy into chemical energy by green plants and certain other creatures.
Photosynthesis usually occurs in chloroplast of the plant cell.
Plants contains pigments which is present in the leaves of the plants that helps plant to produce food through photosynthesis.
There are basically four pigments are present in leaves of plant.
Chlorophyll aChlorophyll bXanthophyllCarotenoidsThus, the type of light can easily make the difference in photosynthesis.
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What is main difference between fresh water & ocean water ecosystem?
the animals that live there
one is deep & one is shallow
one has salt & one does not
the location of fresh and salt water ecosystems
PLEASE HELP THIS IS HELP
Answer:
I think it might be A. I'm not sure.
Organisms that can produce their oven food and feed themselves are called
self feeders
heterotrophs
autotrophs
Answer:
Autotrophs
Explanation: