Which of the following statements about the structure and function of each cell organelle is correct?
A) The mitochondria directs all cellular activities
B) The nucleus gives the cell structure
C) The cytoplasm helps hold the cell's organelles in place
D) Cell walls are found in the cells of all organisms
help asap:)
Answer:
i think it's d but im not sure. i did this in like grade 8
One Fitness magazine suggested that the food that you eat is like a battery because it has energy. Do you think that the banana that mila ate had energy?
Spanish moss hangs on the branch of a live oak tree where it receives greater access to sunlight and distance from herbivores on the ground; the live oak tree is unaffected by the Spanish moss. What kind of symbiosis is this?
Commensalism, as only one side benefits
The relationship between the Spanish moss and the live oak tree is an example of commensalism.
What is commensalism?Commensalism is a sort of symbiotic interaction in which one organism gains advantages from the association while the other organism experiences neither negative effects nor positive effects. In this instance, the Spanish moss benefits from its elevated location on the live oak tree, which gives it better access to sunshine and puts it further away from ground-dwelling animals.
The living oak tree, meanwhile, is unaffected by the Spanish moss' existence and neither gains nor loses from the connection. As a result, the relationship is advantageous to the Spanish moss while having no effect on the live oak tree. This kind of connection is a prime illustration of commensalism.
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how many atoms are in a grapefruit
Answer:
Im pretty sure its: 6,200,000,000 atoms
The law of conservation of energy states that
Answer:
According to the law of conservation of energy, energy cannot be created or destroyed, although it can be changed from one form to another. KE + PE = constant.
Explanation:
hope this helps! mark me brailyest plzz:D
looking under a microscope, you note that the cell is a prokaryote. how do you know?
it lacks the cell membrane
it lacks nucleus
it lacks genetic material
it lacks cytoplasm
Answer:
It lacks nucleus.
Explanation:
Prokaryotic: cells that lack a true nucleus or membrane bound organelles.
Pro- before Karyo- NucleusHow does the ocean affect the amount of CO2 in the atmosphere?
The ocean significantly absorbs approximately 30% of the carbon dioxide that is liberated in the atmosphere. The concentration of carbon dioxide in the ocean is directly related to that of the atmosphere.
What is Atmosphere?An Atmosphere may be defined as a type of envelope that remarkably surrounds numerous gases across the earth planet or any other celestial body. The atmosphere of the earth consists of 78% nitrogen, 21% oxygen, and one percent other gases.
If the level of atmospheric carbon dioxide increases due to numerous human activities like the combustion of fossil fuels, deforestation, etc. the level of carbon dioxide in the ocean also increases.
This is how the concentration of carbon dioxide in the ocean is directly related to that of the level of carbon dioxide in the atmosphere. The ocean without any intervention directly absorbs carbon dioxide from the atmosphere.
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How would you now describe how the Sun provides energy?
Please help me put it in your own words
The sun undergoes nuclear fusion, which generates solar energy. The protons of colliding hydrogen atoms fuse to generate helium atoms during fusion in the sun's core. This technique produces a huge quantity of energy because of a PP (proton-proton) chain reaction.
Solar energy is the general term for all solar energy. The sun undergoes nuclear fusion, which generates solar energy. The protons of colliding hydrogen atoms fuse to generate helium atoms during fusion in the sun's core.
Solar energy may be used to make energy, heat water, and cook meals. Additionally, it is possible to store the electrical energy produced by solar energy. The sole constraint on solar energy as a renewable resource is our capacity to efficiently and economically convert it to electricity.
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163lin jl, br coolman: atlantoaxial subluxation in two dogs with cervical block vertebrae. j am anim hosp assoc. 45:305 2009 19887390
Dogs who suffer from atlantoaxial (AA) subluxation may experience varying degrees of neurological impairments. A block vertebra is a congenital deformity in which two or more vertebrae fuse together.
Two canines with cervical block vertebrae from C(2) to C(5) and C(2) to C(4), respectively, are described. Our theory is that these canines were more susceptible to traumatic AA subluxation because the fused cervical vertebrae caused a "fulcrum effect" at the AA joint.
What signs would point to atlantoaxial subluxation?Although atlantoaxial subluxation is typically asymptomatic, it can occasionally result in intermittent cervical spinal cord compression, occipital headaches, and vague neck pain.
How is atlantoaxial subluxation corrected?In addition to symptomatic relief, cervical immobilization is used in treatment, typically starting with a hard cervical collar. Treatment urgency is typically determined by symptoms or the appearance of aberrant cord tissue on an MRI in susceptible people.Atlantoaxial subluxation is how frequent?They discovered that 2% of patients additionally exhibited vertical atlantoaxial subluxation in addition to the 21% of patients who had anterior displacement of the atlas on the axis (atlantoaxial subluxation).
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predict what would happen to the egg white if a raw egg were placed in vinegar. explain your thinking
If the eggshell is placed in vinegar or acetic acid then the shell will dissolve after some time due to absorption of acid and form CO2.
The eggshell is a hard and protecting outer covering or outer surface that keeps the inside material intact against the external environment and pathogenic substances.
It is made of calcium carbonate (CaCO3).
When calcium carbonate reacts with vinegar acids, it dissolves and forms bubbles which indicate the formation of carbon dioxide gas that liberates in the air.
Only soft tissue or the internal thin lining of the shell will remain behind.
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Susan lives in a city where the days are usually very warm. However, yesterday was very cold. Which statement is true about the city yesterday?
a. The city had cold weather and climate
b. The city had warm weather and climate
c. The city had warm weather but cold climate
Answer:
c makes the most sense I believe
What’s this? First answer get brainliest
Answer:
a i think
Explanation:
hope this helps
taphonomy is the study of a. the processes that affect a living organism through life. b. human cultural remains. c. the processes that affect an organism’s remains after death. d. human genetics.
Taphonomy is the study of the processes that affect an organism’s remains after death. Even when an organism dies, its affecting activities continue.
The study of taphonomy examines the mechanisms by which organic remnants go from the ecosystem to the lithosphere. Taphonomy includes events that take place after an organism dies (or sheds its components), including decay, burying, and retention as mineralization of fossils or other stable biomaterials.
Necrolysis, biostratinomy, and diagensis are examples of taphonomic processes. Necrolysis is the breakdown of living things after death (the post-burial transformation of the organic material).
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In the picture below ions, or charged particles, are being pumped through the cell membrane.
Why do they require energy to transport across the membrane?
Answer: well if i had a picture it wouldve helped more but typically if a particle is moving into the cell, it doesnt require any energy, however moving particles outside of a cell requires a large amount of atp.
Explanation:
In eukaryotic cells, DNA carries genetic information and is found in the [2.3]
Answer:
DNA is the bloodline.....
Answer:
DNA is found in the nucleus of the cell.
In otters, the allele for brown fur (B) is dominant over the allele for silver fur (b). Two brown otters mated and a silver pup (baby otter) was born. What were the genotypes of the parents?
Answer:
Bb, Bb
Explanation:
since silver was recessive, both parents had to carry the gene to affect the nest generation but since they were both brown they also needed to have the brown gene present.
The genotype of the parents who produce a silver pup will be heterozygous dominant i.e., Bb. The ratio of the offspring produced from this cross will be 3:1.
What is Genotype?
The genotype of an organism is the complete set of genetic material which is present in the nucleus of the cell. Genotype can also be used to refer to the alleles an individual carries in a particular gene or genetic location in the genome.
In otters, the allele for brown fur (B) is dominant over the allele for silver fur (b). When the two brown fur otters were mated, a silver pup was born.
In this case, brown fur phenotype can be expressed in two cases, homozygous (BB) and heterozygous (Bb).
When both the parents are heterozygous for the character i.e., Bb. Then, the offspring produced will be in the phenotypic ratio of 3:1 i.e., three offspring will have brown fur and one will have silver fur.
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quorum sensing in bacteria: the luxr-luxi family of cell density-responsive transcriptional regulators
Bacterial quorum sensing, a technique that controls bacterial gene expression, is dependent on the adaptable chemical signaling molecules known as autoinducers.
How quorum sensing works?Individual bacteria produce autoinducers as part of their reproduction process. Acyl-homoserine lactone autoinducers are made by gram-negative bacteria, and they can passively diffuse through their fragile cell walls. In contrast, the ATP-binding cassette (ABC) transporter system is required for the active transport of gram-positive bacterial autoinducers through their peptidoglycan cell wall. In both situations, autoinducers leave individual cells as they develop. Since the bacteria continue multiplying, a "critical mass" of autoinducers eventually reaches an extracellular concentration due to an increase in the number of individual cells producing them.Learn more about the Quorum sensing with the help of the given link:
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Imagine there are many of the molecules above (Atom A at “more” electronegative, Atom B at “less” electronegative) within close interaction. How would you expect them to orient near each other? Do you think their polarity would strengthen or weaken their interactions and why?
Answer:
their polarity would attract them closer to each other because if one is more electronegative, it would have more electrons, meaning it would have a weak negative charge. If one is less electronegative it would have fewer electrons around it meaning it would have a weak positive charge. Since they have opposite charges or polarity, their attractions are strengthened.
Explanation:
The molecules would likely orient with the more electronegative atom (Atom A) closer to the less electronegative atom (Atom B), forming a polar bond. Polarity would strengthen interactions due to the attraction between opposite charges.
Molecules with atoms of differing electronegativities tend to form polar bonds, where the more electronegative atom gains a partial negative charge (δ-) and the less electronegative atom gains a partial positive charge (δ+). In a scenario where many such polar molecules are in close interaction, their orientation would likely involve aligning the more electronegative atom (Atom A, with higher electron affinity) closer to the less electronegative atom (Atom B, with lower electron affinity).
This orientation is driven by the electrostatic forces of attraction between opposite charges. The partial positive charge on Atom B of one molecule would be attracted to the partial negative charge on Atom A of another molecule, and vice versa. This alignment maximizes the attractive forces between molecules, allowing them to come closer together and establish stronger interactions.
The polarity of the bonds strengthens these interactions. The presence of partial charges on the atoms creates stronger dipole-dipole interactions (also known as van der Waals forces or London dispersion forces) between the molecules. These forces contribute to the overall intermolecular attractions and influence properties like boiling and melting points, solubility, and the stability of molecular structures.
In summary, when molecules with atoms of differing electronegativities interact closely, they are likely to orient in a way that maximizes the attractive forces between them—placing the more electronegative atom closer to the less electronegative atom. The polarity of the bonds formed between these atoms strengthens the interactions by creating partial charges that enhance the dipole-dipole attractions. This behavior is fundamental to understanding the behavior of molecules in various chemical and physical contexts.
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plz help asap i’ll give brainlest
(only one answer)
Answer:
Nucleic Acids.
Explanation:
Define specialization as it relates to four-year college majors.
Explanation:
A specialization is a focused area of study of attached to a specific major, with specific coursework beyond major requirements. A specialization is a focused area of study attached to a specific major, and is in addition to course requirements for the major.
do humans have eucaryotic cells
Answer: yes
Explanation:
Answer: Yes
Explanation: Cells contain 3 feautres cytoskeleton,organelles surrounded by a nuclear envelope so their called euraryotic cells so yes we do contain them.
Describe animal interactions that affect populations in the tundra ecosystem. (Please help please... I have already had a mental breakdown over school today because its getting harder and harder so please help!)
Answer:
Herbivorous animals are unable to feed and end up migrating to other regions in search of food.
Explanation:
The tundra is a type of vegetation composed almost exclusively of mosses and lichens. This type of vegetation is found in regions with a polar climate. It is important to note that the tundra has a very fast vegetative cycle. That's because it freezes quickly and can be covered with ice all winter. This ends up modifying the lives of some animals that feed on this vegetation. These animals end up with unavailability of food and need to migrate to others in search of food.
I will mark brainest if you get it right.
What is the best "pro" about renewable resources?
A. They are very expensive
B. They are very inexpensive
C. They create pollution
D. They are always available
all you need is in the photo
Answer:
primary
Explanation:
Primary succession occurs when new land is formed or bare rock is exposed, providing a habitat that can be colonized for the first time. For example, primary succession may take place following the eruption of volcanoes, such as those on the Big Island of Hawaii. As lava flows into the ocean, new rock is formed.
_____ occurs when the cell membrane surrounds and engulfs large particles, such as white blood cells engulfing bacteria.
a Pinocytosis
b Phagocytosis
c Exocytosis
d Receptor-mediated endocytosis
Answer:
Phagocytosis
Explanation:
During phagocytosis, cells engulf large particles such as bacteria, cell debris, or even intact cells (Figure 12.34). Binding of the particle to receptors on the surface of the phagocytic cell triggers the extension of pseudopodia—an actin-based movement of the cell surface, discussed in Chapter 11.
What would happen if the earth gained .5% more oxygen
Answer:
answer: we
all die the end
Can someone please help me with this I don’t know the Answer:/ please
Answer:
its either c or d
Explanation:
can't quite remember which
Lesson Worksheet
Multiple Choice
Circle the letter of the correct choice.
1 Which of the following is the basic unit of matter?
molecule
chemical compound
atom
nucleus
2 Water is an example of a(n)
atom
molecule
ion
native element
3 An atom is only an ion if it has more or less
neutrons than electrons
protons than neutrons
neutrons than protons
electrons than protons
4 An example of a pure element is
table salt
silicon dioxide
sulfur
calcium carbonate
5 The crystal shape of a mineral
shows how the atoms are arranged
will always be the same if it is made from the same atoms
can usually only be seen under a microscope
can help account for how hard or brittle a mineral is
True or False
Write true if the statement is true or false if the statement is false.
_______ 6. A molecule is the smallest unit of an element.
_______ 7. Protons and electrons are found in the nucleus of an atom.
_______ 8. Halides (salts) make up the largest group of minerals on Earth.
_______ 9. Coal and diamonds are different minerals because they have a different structures.
_______ 10. In a crystal, the atoms are arranged in a pattern.
Fill in the Blanks
Fill in the blank with the term that best completes the sentence.
11. 90% of Earth’s crust is made of minerals in the group called a(n) ______________________.
12. The _______________ makeup of a material is the different atoms and molecules that it is composed of.
13. Even though calcium carbonate is made by marine animals, it is still ____________________.
14. ___________________ is the substance of which physical objects are made.
15. Electrically neutral particles are called _________________.
Short Answer
Answer:
1. atom
2.
3. electrons than protons
4. salt
5.
6. false
7. true
8. false
9. false
10. true
11. silicate
12. compound?
13.
14. energy
15. neutrons
Explanation:
those are my best answers I'm pretty sure about 12 but not positive and I didn't know about 2, 5 or 13. I hope it still helped though
The bee's hairy thorax (middle section) is covered in pollen. Pollen is produced by male
reproductive organs in the flower. Each grain of pollen contains a sperm cell.
B. What happens to the flowers?
Answer:
1
Explanation:
Please help me!!!!!!!!!!!!!!!!!!!!!!
Answer:
The Calvin cycle has four main steps: carbon fixation, reduction phase, carbohydrate formation, and regeneration phase. Energy to fuel chemical reactions in this sugar-generating process is provided by ATP and NADPH, chemical compounds which contain the energy plants have captured from sunlight.
Explanation: