prokaryotic cells have nulcleus
Answers
Answer:
not nucleus, only nucleoid
Answer:
Prokaryotic cells are surrounded by a plasma membrane, but they have no internal membrane-bound organelles within their cytoplasm. The absence of a nucleus and other membrane-bound organelles differentiates prokaryotes from another class of organisms called eukaryotes.
Explanation:
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Related Questions
Blood passes from the right ventricle to the _____ and then the _____ before reaching the lungs to pick up oxygen. Multiple choice question.
Answers
Blood passes from the right ventricle to the Pulmonary valve and then the Pulmonary artery before reaching the lungs to pick up oxygen
Blood circulation procedureWhen the blood enters the right ventricle it contracts and sends the blood through the Pulmonary valve before it reaches the Pulmonary artery which is passes the blood to the Lungs where it becomes oxygenated.
Hence we can conclude that Blood passes from the right ventricle to the Pulmonary valve and then the Pulmonary artery before reaching the lungs to pick up oxygen.
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ALL the following are REACTANTS to cellular respiration EXCEPT.
A
Glucose
B
Oxygen
C
Carbon dioxide
D
All the above
Answers
Answer:
the correct answer is A glucose
When a group of proteins such as interferons and interleukins are released by the t cells, intercellular signals begin the immune response, what is the medical term used for the group of proteins?.
Answers
The cytokine describes the group of proteins such as interferons and interleukins that regulate cell communication, mainly produced by the immune system in normal and pathological conditions.
What is a cytokine?They are messenger molecules with a glycoprotein structure, whose lifetime is short and generally secreted in cascades.
They are produced by different activated cells, responsible for innate and/or acquired immunity, and regulate the immune and inflammatory response.
Therefore, we can conclude that the cytokine describes the group of proteins that regulate cell communication, mainly produced by the immune system in normal and pathological conditions.
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differentiate the types of muscle- skeletal, cardiac, smooth
Answers
Answer:
Skeletal muscle moves bones and other structures. Cardiac muscle contracts the heart to pump blood. The smooth muscle tissue that forms organs like the stomach and bladder changes shape to facilitate bodily functions.
Explanation:
Answer:
cardiac muscles perform involuntary muscular movements of the heart, aiding the heart to pump blood throughout the body, while skeletal muscles perform voluntary muscular movements of bones, aiding physical movements of the body such as walking, running, and writing and smooth muscles perform an involuntary muscular movements of internal organs, aiding functions of the body such as digestion, urination, and breathing.
An astronomer notices increased chances of solar energetic particles in the ionosphere. Who should be notified of this possibility? Select the two correct answers. (1 point)
engineers who control power systems to cities in the affected area
flight operations officers who devise airline flight planes
scientists who are responsible for tracking and maneuvering satellites
computer technicians trying to charge several new computers at a warehouse
Answers
You must be notified of this engineers who control power systems for cities in the affected area and scientists responsible for tracking and maneuvering satellites.
What is a solar storm and a solar flare?The sun is a gigantic thermonuclear reactor that eventually fires huge amounts of concentrated radiation in the form of particles in a constant stream called the "solar wind".
A geomagnetic storm can last just a few minutes, or several hours, but the effects of geomagnetic storms can linger in the Earth's magnetosphere and atmosphere for days to weeks. The storm also results in a rapid drop in the strength of Earth's magnetosphere for a period of between 6 and 12 hours. Then the magnetic field gradually recovers over a few days.
Whit this information, we can conclude that you must be notified of this engineers who control power systems for cities in the affected area and scientists responsible for tracking and maneuvering satellites.
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One mechanism the kidney uses to raise systemic blood pressure is to.
Answers
Answer:
increase secretion of renin by the juxtaglomerular complex
Explanation:
1. *All of the following statements about invasive exotic species are true EXCEPT:
a. They may compete with native species for food.
b. They may prey on native species.
They are generally introduced by human activity.
d. They may be plant or animal species.
e. They tend to have low reproductive rates.
Answers
Invasive species are usually competitors, predators, high reproducers, and are mostly introduced by humans activities.
What are invasive species?They are plant or animal species that invade ecosystems.
They are mostly introduced to ecosystems from another ecosystem and once they establish themselves, end up out-competing native species for resources.
Invasive species generally have high reproductive capacity and efficient dispersal mechanisms.
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The selection of antibiotic resistant bacteria is an example of:.
Answers
The selection of antibiotic resistant bacteria is an example of natural selection.
What is natural selection?Natural selection is the process whereby organisms that are better suited or adapted to their environment have more chance of survival.
Antibiotic resistance is a phenomenon of certain bacteria that gives them an edge over their susceptible counterparts.
Antibiotic resistance is caused by evolution through the process of natural selection.
Therefore, the selection of antibiotic resistant bacteria is an example of natural selection.
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5. The family tree below shows the trait of having attached earlobes. Having
attached earlobes is recessive, and having detached earlobes is dominant. People
with attached earlobes are shaded in.
B) describe the genotype of the person labeled b.
C) describe the genotype of the person labeled c.
D) could the person labeled d have a recessive allele? Explain.
Answers
This can be defined as the variant form of a gene. In this scenario, there are two variants which are dominant and recessive allele.
Both parents have to possess the dominant allele for all the offsprings to also have the dominant trait.
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The exchange of genetic material between nonsister chromatids is called crossing-over and occurs during which phase of meiosis?.
Answers
Answer:
prophase I
Explanation:
during prophase I, and it is the exchange of genetic material between non-sister chromatids of homologous chromosomes
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pls mark brainliest
What is the most basic unit of structure
and function?
A. a tissue
B. a cell
C. an organ
D. an organ system
Answers
Answer:
a cell is the basic unit of structure and function
Neurons in which dendritic and axonal processes are continuous and the soma lies off to one side are called.
Answers
The neuron is a highly specialized type of nervous system cell that is called unipolar when dendritic and axonal processes are continuous and the soma lies off to one side.
What is a unipolar neuron?The neuron is the structural and functional unit of the nervous system, which when they have only a short projection that later branches into two or more branches, are considered unipolar.
That is, they are those neurons in which only one extension or neurite emerges from the soma, which will act as an axon and at the same time will have dendrites with which it can both receive and transmit information.
Therefore, we can conclude that the neuron is a highly specialized type of nervous system cell that is called unipolar when dendritic and axonal processes are continuous and the soma lies off to one side.
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. Which of the following types of erosion is caused by landslides?
a. Gravity erosion
b. Wind erosion
c. Wave erosion
d. Temperature erosion
e. Flood erosion
Answers
Answer:
a. Gravity erosionerosion
Explanation:
Concentrated animal feeding operations that raise hundreds of animals in a single location often use manure lagoons to dispose of the manure. manure lagoons are ponds lined with rubber to prevent the manure from leaking into groundwater or nearby waterways. one pig produces 30 liters of manure each day, and the average feedlot holds 900 pigs. calculate the amount of manure produced by the feedlot after 30 days to determine the minimum capacity needed for a manure lagoon. a faulty manure pond leaks into a nearby lake. describe one effect this leak would have on the organisms living in the lake.
Answers
If there is a leakage of the manure pond into the near by river, the growth the nitrates and phosphates in the leak causes an overgrowth of algae leading to eutrophication.
What is a manure?A manure is that which is used to improve the fertility of the soil. It is composed of the nutrients that are required by the soil. We know that each pig produces 30 liters of manure each day, and the average feedlot holds 900 pigs. Hence, each day, 30 * 900 = 27000 litres of manure is produced.
Within a period of 30 days, a total of 27000 litres of manure * 30 = 810,000 litres of manure is produced. If there is a leakage of the manure pond into the near by river, the growth the nitrates and phosphates in the leak causes an overgrowth of algae leading to eutrophication.
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Which fact about fossils is MOST important to scientists who study evolution?
Answers
Answer:
it b or d
Explanation:
that is the most important for scientistes to study
b tells what can be in the fossill or find in the fossill
so i think it b
Answer:
The correct answer is C
Explanation:
The reason why the age is of high importance is because it determines during what time the fossil lived and how it has evolved.
Question 6 (1 point)
What 4 body systems are used for CLEANING
YOUR ROOM?
List each body system (4 systems should be
listed) and explain how each system helps the
body when you clean your room.
Here are the body systems we talked about in class. Use this list to help you recall the types of systems
in the body: Muscular System, Skeletal System, Nervous System, Circulatory System, Digestive System,
Immune System, Reproductive System, Integumentary System, Respiratory System, Excretory System
Answers
Answer:
The skeletal system:This system controls our bones so we aren't just a blob on the ground. Our bones help keep our important organs intact.
The muscular system works about the same way, it protects your bones so they don't grind against eachother when you move. Your muscles give you the ability to move.
Our organ system is what keeps us alive, you can't clean your room if your dead and if your room is hot you need your skin so you don't overheat and die.
Lastly of course is your respitory system, you need to bring when your moving about. Our ability to breathe gives our blood cells and our heart what they need to keep working.
The ___ is the inner lining of the uterus, facilitates the transport of sperm and prepares for implantation of an embryo. Group of answer choices Fallopian tubes Myometrium Perimetrium Endometrium
Answers
Answer:
Endometrium
Explanation:
When igneous rock is formed,the size of the rock crystals or grains is primarily dependent on
Answers
Answer:
The three factors that influence the textures of igneous rocks are the speed of cooling, the silicate content, and the water content.
Igneous rocks contain randomly arranged interlocking crystals. The size of the crystals depends on how quickly the molten magma solidified: magma that cools slowly will form an igneous rock with large crystals. lava that cools quickly will form an igneous rock with small crystals. When magma cools, crystals form because the solution is super-saturated with respect to some minerals. If the magma cools quickly, the crystals do not have much time to form, so they are very small. If the magma cools slowly, then the crystals have enough time to grow and become large.
If the DNA is GGC ATC CAG, what is the corresponding mRNA?
Answers
Answer:
CCG UAG GUC
Explanation:
The complementary mRNA strands for DNA are shown below.
G = C
A = U
C = G
T = A
U = A
Using this, we can conclude that the corresponding mRNA is CCG UAG GUC.
hope this helps!
Producers are found on what level of an energy pyramid
Answers
Answer:
first/ lowest level
Explanation:
What natural resources are used to make artificial sweeteners?.
Answers
I have 5 mins left please help!!
#1 Which of these events happened earliest in the history of life on Earth?
A. eukaryotic cells with a nucleus
B. skeleton made of bone
C. multicellular organisms, like algae
D. opposable thumbs
#2 Which of these events happened earliest in the history of life on Earth?
A. dinosaurs
B. early animals
C. prokaryotic cells
D. eukaryotic cells
#3 Early life needed which of the following conditions to exist?
A. building block molecules
B. a source of energy
C. instructions
D. all of these were necessary
#4 It is thought that prokaryotes that were good at making ATP began to live inside other prokaryotes that were good at getting glucose. One provided glucose while the other shared its ATP. This formed early mitochondria, and natural selection favored these cells and they diversified to many forms. This idea is called the
A. cell theory
B. endosymbiont theory.
C. mitochondria theory.
D. eukaryotic theory.
Answers
Explanation:
4) option B endosymbiont theory
2) option C prokaryotic cells
If your small intestine where unwound approximately how long would it be.
Answers
It would be about twenty - two- ish feet
Which of the following is the correct chemical formula for glucose
Answers
Answer:
C6H12O6: 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms bonded together making one molecule of glucose
In all the crosses the two genes under investigation were on different chromosomes. If the two genes were on the same chromosome rather than different chromosomes, how would that have affected the results?.
Answers
Answer:
When genes are close together on the same chromosome, they are said to be linked. That means the alleles, or gene versions, already together on one chromosome will be inherited as a unit more frequently than not.
Explanation:
:)
When genes are close together on the same chromosome called as linked genes, means the alleles present together on one chromosome and it will be inherited as a unit.
What is chromosome ?A chromosome is located in nucleus of the cell is the main carrier of genes or DNA; It is a thread-like structure observed in plant, animal and human cells and composed of molecule of DNA (Deoxyribonucleic acid) and histone proteins.
DNA content ranges from 30 to 40 %, the amount of proteins from 50 to 65%, and RNA content ranges from 1 to 10% in chromosome.
There are Two types of protein present such as histone and non-histones proteins where histone protein constitute portion (90% of total protein), whereas non-histone protein occupy a small portion (around 10% of total protein).
The histone protein is basic in nature, whereas, the DNA is acidic, so neutralization occur, DNA in chromosome can be present as forms such as Euchromatin and Heterochromatin.
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The breaststroke is started in the dive position in the water
Question 4 options:
True or false
Answers
Swimmers need to dive in for breaststroke in the same way as in front crawl and butterfly.
The breaststroke is not started in the dive position in the water. Therefore, the statement is false.
What is breaststroke?The breaststroke is not started in the dive position in the water. It started in a stationary position with the swimmer, which faces forward and floats in the water.
The swimmer then takes a breath followed by the beginning of the stroke by pulling both arms back simultaneously and lifting their head and shoulders out of the water.
The legs are brought together by the swimmer andglides forward before the repetition of the arm and leg movements. It is the butterfly stroke because of the dive position, as the swimmer resurfaces both arms extended above the head to begin the stroke.
Therefore, the breaststroke is not started in the dive position in the water as it is started in a stationary position with the swimmer facing forward and floats in the water.
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Based on the food web shown, which organism is the primary consumer?
Answers
Answer:
The grass hopper, rabbit, and the slug are primary consumers.
Explanation:
They are all herbavores and at the second lowest part of the food web (the first being the grass
During the 1918 influenza pandemic, doctors initially treated infected patients with an antibiotic. Why was this treatment ineffective?
Answers
Use the four population pyramids above to answer the question. Which country's population is
significantly decreasing? Sb
O Brazil
O Japan
O Afghanistan
O US
Answers
PLS HELPPP :(((
VOLUME
Why does the first method for determining volume work only for a regular-shaped object?
Will the second method for determining volume work for any object or just an odd-shaped one?
Why?
Is one method of measurement more accurate than the other? Why or why not?
Would the displacement method of measurement work for a cube of sugar?
What about a cork? Why?
What did you find out from this investigation? Be thoughtful in your answer.
.
Answers
Answer:
1. Because only regular-shaped objects have a consistent length, width, height, and shape. When dealing with an object composed of differing shapes, you must calculate each portion separately and then add them. For instance, if you have a swimming pool of two depths and want to determine cubic feet, you would have to calculate the volume for each section and then add them.
2. method used to figure the volume of an irregular shaped object Neither measurement is more "accurate" than the other--they simply denote different things. Length is a measurement of the distance between two points in space. The area is a measurement of the surface covered by a given shape.
3. not in the water as the sugar would dissolve if you could find a liquid that sugar does not dissolve in, then it would work
Explanation: