Answer:
Nucleus
Nuclear pore
Proton pump
Cyt C Ribosome
Explanation:
The nucleus of the cell is the largest of all of these structures, all of the others are located inside the nucleus of the cell or interact with it, the nuclear pore is a pore in the nucleus that allows the transport of proteins through the membrane, the proton pump passes through the nuclear pore, and a Ribosome is a protein that transports nutrients, so that would be the smallest.
The order from largest to smallest is nucleous>> >> ribosome >> nuclear pore >> proton pump >> Cyt C.
The nucleus is the organelle that contains the genetic material in a eukaryotic cell, whereas ribosomes are protein factories.The nuclear pore is a structure that allows the passage of certain molecules between the cytoplasm and the nucleus.The proton pump is an integral protein-membrane, whereas Cyt C is a mitochondrial protein.In conclusion, the order from largest to smallest is nucleous>> >> ribosome >> nuclear pore >> proton pump >> Cyt C.
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Students in a science class visited four local ecosystems. The students observed the species present in each ecosystem and recorded their observations in the table.
Based on these observations, which ecosystem is likely to be the least sustainable?
A.Ecosystem 1, because it has the fewest species
B.Ecosystem 2, because it includes both aquatic and terrestrial species
C.Ecosystem 3, because it has few predators
D.Ecosystem 4, because it supports many animals
the answer is A
this is because in ecosystem 1 there are only predators and no other species are observed. therefore predators have less food to eat thus they will die of hunger or move to another ecosystem
This is because in ecosystem 1 there are only predators and no other species are observed. therefore predators have less food to eat thus they will die of hunger or move to another ecosystem.
What is Ecosystem?
An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life.
Ecosystems contain biotic or living, parts, as well as abiotic factors, or nonliving parts. Biotic factors include plants, animals, and other organisms. Abiotic factors include rocks, temperature, and humidity.
Every factor in an ecosystem depends on every other factor, either directly or indirectly. A change in the temperature of an ecosystem will often affect what plants will grow there, for instance.
Therefore, This is because in ecosystem 1 there are only predators and no other species are observed. therefore predators have less food to eat thus they will die of hunger or move to another ecosystem.
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-4. Which of the following correctly traces the path of air after it is inhaled?
A. epiglottis, trachea, bronchioles, alveoli
B. bronchioles, alveoli, epiglottis, trachea
C. epiglottis, bronchioles, alveoli, trachea
D. alveoli, epiglottis, trachea, bronchioles
Describe how a rainforest can reach a point when it cannot be restored by secondary ecological succession
Answer:Although the secondary forest will be low in diversity and poorly developed, the forest cover will be adequate for some species to return (assuming they still exist). The solution must be based on what is feasible, not overly idealistic, and depends on developing a new conservation policy built on the principle of sustainable use and development of rainforests. Beyond the responsible development of rainforests, efforts to rehabilitate and restore degraded forest lands along with the establishment of protected areas are key to securing rainforests for the long-term benefits they can provide mankind.
Explanation:
i lloke dit up online because i have not did this yet
A very high damaged leads to no restoration of rainforest by secondary ecological succession.
A rainforest can reach a point when it cannot be restored by secondary ecological succession when the large portion of the rainforest is destroyed and most of diversity is vanished. At this time, restoration is impossible due to very high damages.
Ecological resilience is the ability of an ecosystem to be restored through secondary ecological succession after a severe disturbance. Rainforest have a high biodiversity that helps it to resist damage but at a certain limit so we can conclude that very high damaged leads to no restoration of rainforest by secondary ecological succession.
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When ice and snow move overland in compacted large quantities, they erode the soil and can change landforms. Which object creates this type of erosion?
The majority of pesticides do not have a residual effect (i.e., not persistent; lose chemical activity) in the soil.
a) True
b) False
Answer:
B- False
Explanation:
Pesticides can contaminate soil, water, turf, and other vegetation. In addition to killing insects or weeds, pesticides can be toxic to a host of other organisms including birds, fish, beneficial insects, and non-target plants. Soil can be degraded and the community of organisms living in the soil can be damaged by the misuse or over use of pesticides. Some pesticides are more toxic to soil organisms than others.
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Identify the structure labeled B
A. Nucleotide
B. Base
C. Phosphate
D. Sugar
What is the difference between active transport across a cell membrane and diffusion across a cell membrane?
When glucose is used as an energy source, the largest amount of ATP is generated by the ___________ of the entire respiratory process.
Answer:
electron transport chain
Explanation:
it generates the most
What adaptations allow conifers to live in dry
habitats?
Answer:
Explanation: Long, thin needles to reduce the surface area of their leaves, the leaves' waxy outer covering, and leaf openings in cavities on the surface of the leaves to reduce water loss by evaporation.
1 Sustainability means: A. Meeting present needs without compromising needs of future generations B. Meeting present needs without the concern for future generations C. Ignoring the needs of current generations to help future generations D. Sustaining fish at a certain depth in the ocean 15 (1 Point)
Answer:
A
Explanation:
Which of the following is a reason for the genetic variability from sexual reproduction?
A. The more variety there is in the gene pool, the less arrangements in the population.
B.The genes that are “dealt” to the offspring from their parents are by systematic event.
C. Offspring have the same gene combinations of either of their parents.
D. Members of a species choose mates, creating different combinations of genes.
Please help. This is due today.
Answer:
the answer is d opinion
When substances are constantly moving
back and forth across a cell membrane, the
cell is said to be in a state of?
The diffusion of water molecules a secectively permeable membrane.
What is Diffusion?The net passive movement of molecules or particles from areas of higher concentration to areas of lower concentration is known as diffusion. There needs to be a concentration gradient for diffusion to happen.
The dissimilarity in the quantity of solutes, particles, or molecules between the two locations will drive them to travel between the two regions.
The gradient created by the uneven particle concentration between two fluids will cause the particles to move in order to balance the discrepancy in concentrations. However, solutes do not migrate in a single direction during the diffusion process.
Therefore, The diffusion of water molecules a selectively permeable membrane.
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Circle the word that best completes the statement about cell theory.
6. The cell theory states that:
i. All organisms are made of organelles / cells.
ii. All existing cells are produced by other living dead cells.
111. The atom cell is the most basic unit of life.
7. Cell theory is one of the great unifying theories of biology / chemistry.
MAIN IDEA: Prokaryotic cells lack a nucleus and most internal structures of
eukaryotic cells.
Question reformatted:
Circle the word that best completes the statement about cell theory.
6. The cell theory states that:
i. All organisms are made of organelles / cells.
ii. All existing cells are produced by other living / dead cells.
iii. The atom / cell is the most basic unit of life.
7. Cell theory is one of the great unifying theories of biology / chemistry
Answer:
6. The cell theory states that:
i. All organisms are made of cells.
ii. All existing cells are produced by other living cells.
iii. The cell is the most basic unit of life.
7. Cell theory is one of the great unifying theories of biology
Explanation:
Cell theory is one of the central theories of biology and is universally accepted. It states that all organisms are cellular - that is they are made of cells. It also states that all living things come from other living cells (not spontaneously, or from dead cells). The cell is the most basic unit of life, organisms can be unicellular, but no living thing is 'less' than that.
which 3 reactions form atp?
Answer:
Answer below
Explanation:
The eight steps of the citric acid cycle are a series of redox, dehydration, hydration, and decarboxylation reactions. Each turn of the cycle forms one GTP or ATP as well as three NADH molecules and one FADH2 molecule, which will be used in further steps of cellular respiration to produce ATP for the cell.
10. According to Bohr's model of the atom, electrons behave like....
A. Waves on a vibrating string
B.Planets orbiting the
C.sun light energy in a vacuum
B.Planets orbiting hiiiiii
why is it important to understand plant physiology in crop/plant production and productivity?in your discussion make sure that you mention related fields/areas in agriculture which specifically require a background of plant physiology
Knowledge of Seed physiology helps in understanding of different physiological and morphological changes that occur during germination. By knowing the different inputs requirement of plants (water, nutrients, sunlight) we can easily manage the plant population to get highest yield.
what shoukd the patient expect to experience living with the disease- Sitius Inversus?? in ur own words
Answer:
there is a complete mirror image transposition of the thoracic (chest) and abdominal organs , and anterior-posterior (front-back) symmetry is normal. Many affected people have no associated health issues when the condition is isolated.
Explanation:
how do mutations affect our communications?
Explanation:
When a mutation alters a protein that plays a critical role in the body, it can disrupt normal development or cause a medical condition. A condition caused by mutations in one or more genes is called a genetic disorder. In some cases, gene mutations are so severe that they prevent an embryo from surviving until birth.Over time, a mutation might take place in one of the descendant cells, causing increased activity of a positive cell cycle regulator. The mutation might not cause cancer by itself either, but the offspring of this cell would divide even faster, creating a larger pool of cells in which a third mutation could take place.
Read each question carefully. Write your response in the space provided for each part of each question. Answers must be written out in paragraph form. Outlines, bulleted lists, or diagrams alone are not acceptable and will not be scored.
White blood cells called B cells produce proteins that can be used for the treatment of certain illnesses. However, these B cells do not live for very long on their own. To keep the B cells growing for a long time in laboratories, scientists fuse the B cells with cancer cells (fused B-cancer cells) that do grow for a very long time. The particular cancer cells used for the fusion are treated with chemicals that make them unable to produce the nitrogenous bases adenine and guanine, but the B cells with which they are fused do produce these nitrogenous bases. The scientists grow the large fused B-cancer cells in a growth medium that contains necessary nutrients for the cells and includes a source of carbon.
(a) Describe the role of carbon in biological systems.
(b) The membranes of both B cells and the cancer cells are largely composed of phospholipids. Explain how, when the membranes are fused, the polar parts of the phospholipids from one cell will interact with the phospholipids from the other cell and how the nonpolar parts of the phospholipids from one cell will interact with the phospholipids from the other cell.
(c) Make a claim about the most immediate effect on the fused B-cancer cells if the fused cells are transferred to a growth medium that lacks a source of nitrogen.
(d) Provide reasoning with evidence based on the composition of biological macromolecules to support your claim.
Answer: they can be ruduce
Explanation:
which ligament connects the shaft of the metatarsals
Answer:
plantar metatarsophalangeal ligament
Explanation:
The plantar metatarsophalangeal ligament attaches proximally from the head of the metatarsal to the base of the phalanx distally. The ligament extends plantarly from the medial tubercle to the lateral tubercle along the plantar surface of the joint.
The ligament that connects the shaft of the metatarsals is :
-Plantar metatarsophalangeal ligament
MetatarsalsThe ligament that connects the shaft of the metatarsals is the plantar metatarsophalangeal ligament.
The plantar metatarsophalangeal tendon connects proximally from the head of the metatarsal to the base of the phalanx distally.
The tendon amplifies planarly from the average tubercle to the sidelong tubercle along the plantar surface of the joint.
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Various cultures designate racial categories differently, and they often base these categories on very different traits. For example, some cultures use nose shape as one of the defining traits for a racial group. Other cultures do not use nose shape in defining racial groups, but use hair color instead. Conduct a survey in person on your campus, via social media accounts online, or among your friends and family. Ask at least 20 people what five traits they think are most important when distinguishing racial groups. Document the responses, and then review the data. Did every person use the same traits? What do differences in racial classification such as these suggest about the universality of race and racial groupings?
Answer:
In the clarification portion below, the definition of the topic is mentioned.
Explanation:
This shows that the distinctions between people living in a culture or geographical region are often based on ethnicity including ethnic groupings. A single population belonging to a specific geographical region has been shown to possess many characteristics, including hair color, body potential for heat resistance, and menu variety. In something like a specific race or ethnic group, these social traits bring them alongside, and the young government associated with a particular race is often obligated to answer the custom practiced by individuals related to such a particular demographic. These are assumed that understand the connection to a specific community follow these rituals only to solve difficulties they have previously faced due to errors perpetrated by certain ancestors.What is the keystone species
Answer:
a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically
Explanation:
Answer:a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.
Explanation:
The American Beaver (Castor canadensis) is one example of a keystone species in North America. In any arrangement or community, the “keystone” is considered one of the most vital parts. In a marine ecosystem, or any type of ecosystem, a keystone species is an organism that helps hold the system together.
Based on what you have learned in this activity, will you share the link to that article on
brainpower? Why or why not? What should you tell your friend who originally shared the link
about the article? The next time that you run across a link on social media, what steps will
you take to evaluate it before clicking "share"?
I
Submit
Answer:
b
Explanation:
yes
The zika virus was first identified in Uganda in 1947. The virus is transmitted from person to person by a bite from a mosquito. It is commonly carried by the Aedes mosquito which is prevalent throughout Central Africa. The virus has more recently spread to the Americas (South, Central, and now North) and is expected to spread to Europe. There is a concern that the virus may reach epidemic proportions. Zika virus is related to yellow and dengue fever. Common symptoms are low grade fever and a distinctive skin rash and other symptoms include vomiting, headache, and muscle and/or joint pain. Pregnant women should avoid traveling to areas known to have zika virus present because the virus is known to cause microcephaly and developmental difficulties related to the central nervous system. Based on the paragraph above, class discussions, and other VALID (be careful with your selection of e-materials! CDC – Center for Disease Control is a good place to start) sources of information please answer the following questions.
1. State a reason why the virus has spread to the Americas and likely to spread to Europe.
2. Define the term microcephaly.
3. What bones of the fetal skull would be affected by zika? Specifically, what area of the CNS is not fully developed in microcephalic individuals.
Answer:
1. It is a highly contagious disease transmitted from person to person and thereby it is expected that infected persons carried the virus to America
2. Microcephaly is a serious birth defect where a baby’s head is much smaller than expected.
3. Occipital bone. CNS malformations: ventriculomegaly, parenchymal and periventricular calcifications and cortical migration anomalies
Explanation:
The Zika virus (Flaviviridae) causes a contagious disease and it is transmitted by Aedes mosquitoes, which are also the main vectors of the dengue virus. Microcephaly is a condition where the baby’s brain has not developed properly during pregnancy, and it has been shown that this birth defect is associated with the Zika virus. During 2015 in Brazil, the incidence of infants with microcephaly born from mothers that contracted this disease during pregnancy was higher, thereby suggesting an association between both conditions. Baby health problems associated with Zika infection include microcephaly (skull partially collapsed), joints with limited motion, etc.
What part of the cell determines the type and order of the amino acids that make up a protein?
Answer:
The gene, or sequence of DNA, ultimately determines the unique sequence of amino acids in each peptide chain. A change in nucleotide sequence of the gene's coding region may lead to a different amino acid being added to the growing polypeptide chain, causing a change in protein structure and therefore function.
Select the correct answer.
Jayden is taking a test. He has to write why scientists support the theory that life began near hydrothermal vents in the ocean. Which point should he include in his answer?
A.
Hydrothermal vents were closest to ocean surface, and therefore could receive oxygen.
B.
Oceans were dry and only had water near the hydrothermal vents in the earlier ages.
C.
Even today, all life forms are first born near hydrothermal vents and they later migrate to land.
D.
Fossils of archeabacteria, which are early common ancestors, were found near hydrothermal vents.
Answer:
The answer is; D
Archaebacteria are early life forms on earth. They utilized the process of chemosynthesis to make organic molecules from inorganic molecules and for energy. The word archae means ‘ancient’ life forms. These single-celled organisms evolved around sulfur-rich environments of the hydrothermal vents.
Answer:
D
Explanation:
Why does photosynthesis occur at the upper surface of the leaf than the lower surface
Answer: The sunlight hits the upper surface of the leaf, and sunlight is crucial to the photosynthesis process. The leaves trap the energy and use it to create glucose.
If the mass of Earth were increased by a factor of 8.00 , by how many times would the force between Earth and the Sun increase?
Answer:They would increased a lot and cause problems.
Explanation:
When ATP is hydrolyzed, are you adding water or removing it? Explain 20 points I’ll do brainlest too
Answer:
Are there answers
Explanation:
Answer:
adding water
Explanation:
hydrolysis means adding water to it
4. Which of the following statements BEST explains why you can hear noises
long distances at night?
A. There are fewer other noises at night.
B. Water conducts sound better at night.
C. Sound bounces off water better at night.
D. Sound waves are bent towards the cool air.
i guess its answer is option D