Answer:
Proteins to be secreted outside the cell are formed at ribosomes on the surface of the rough endoplasmic reticulum.
Proteins to be secreted outside the cell are formed at ribosomes on the surface of the rough endoplasmic reticulum.
How protein is synthesized?Ribosomes, which are tiny, elongated organelles with a round shape, are found on the rough endoplasmic reticulum and are responsible for producing those proteins.
After prolonged chase times, secretory vesicles carrying the radiolabeled proteins from the Golgi apparatus to the cell surface merged with the plasma membrane to discharge their contents outside of the cell.
While the smooth endoplasmic reticulum does not contain ribosomes and produces lipids and helps the cell detoxify, the rough endoplasmic reticulum produces protein and contains ribosomes.
Therefore, the rough endoplasmic reticulum is responsible to synthesize proteins to be secreted outside the cell.
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State the law on which hydrometer is based on
Answer:
Archimedes' principle
What is the life cycle of a parasite in stages ?
Please help me thank you
Answer:
Parasitism is a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life. Explanation: The entomologist E. O. Wilson has characterised parasites as "predators that eat prey in units of less than one". Parasites include single-celled protozoans such as the agents of malaria, sleeping sickness, and amoebic dysentery; animals such as hookworms, lice, mosquitoes, and vampire bats; fungi such as honey fungus and the agents of ringworm; and plants such as mistletoe, dodder, and the broomrapes. There are six major parasitic strategies of exploitation of animal hosts, namely parasitic castration, directly transmitted parasitism, trophically transmitted parasitism, vector-transmitted parasitism, parasitoidism, and micropredation.
Name two examples of inorganic materials that allow for primary succession:
Answer:
Areas where lava recently flowed, a glacier retreated, or a sand dune formed.
Explanation:
I don't know if this'll help you, but I think that should be somewhat about primary succession.
Which of the following describes the path of carbon dioxide as it leaves your
capillaries and exits through the respiratory system?
alveoli, bronchi, bronchioles, trachea, larynx, pharynx, mouth/nose
mouth/nose, pharynx, larynx, trachea, bronchi, bronchioles, alveoli
mouth/nose, pharynx, larynx, bronchioles, trachea, bronchi, alveoli
alveoli, bronchioles, bronchi, trachea, larynx, pharynx, mouth/nose
Carbon dioxide follows the following path on leaves the capillaries: alveoli--->bronchioles--->bronchi---> trachea --->larynx --->pharynx---> mouth/nose
What is the respiratory system?The respiratory system refers to the system of organs and tissues which work together to take in oxygen into cells and remove carbon dioxide from the body.
Parts of the respiratory system include the lungs, the bronchi, trachea, etc.
The path of carbon dioxide as it leaves the body describes the path through which carbon dioxide takes as it goes from the capillaries to be exhaled via the nose or mouth.
Carbon dioxide follows the following path on leaves the capillaries: alveoli--->bronchioles--->bronchi---> trachea --->larynx --->pharynx---> mouth/nose
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The driving forces of tectonic plates are related to convection currents in Earth’s ____.
A) crust
B) mantle
C) inner core
D) outer core
Answer:
B
Explanation:
Mantle
STUDY ISLAND :)
THE EARTH IS KIND OF LIKE THE MANTLE
The chytrid fungus, Batrachochytrium dendrobatidis, is a pathogenic fungus that has severely impacted frog populations around the globe. If you were a scientist studying this fungus and wanted to know if it could infect a new frog species, how would you conduct your experiment
The best design for this experiment is to have a specific number of frogs exposed to this fungus and to have the same number of frogs in the same environment free from this bacteria.
What is an experiment?An experiment is a scientific process that has the purpose of testing a hypothesis or in this case, discovering the effect of a specific variable (Batrachochytrium dendrobatidis).
What is the best experimental design?In most cases, if you can test the effect of a pathogen or even medicine, the following elements are required:
Experimental group: Individuals exposed to the pathogen or medicine.Control groups: Individuals that are not exposed.Based on this, in this experiment the best idea is to have the same number of frogs for the experimental and control group and the same conditions. Then, you need to expose the experimental group to the fungus and compare their behavior, symptoms, etc. to the control group to see the effect of the fungus on them.
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1 What part of the cell does the ping pong ball or ball of tin foil show?
2 Write two or three sentences about the main functions of the nucleus?
3. What colour of plasticine did you use to make the chloroplasts?
4.Was this the best colour to use? Explain your answer.
5.What function do the.chloroplasts have in a cell?
6.Does your model represent a plant cell or an animal cell? Give as many reasons as you can for your answer. .
Answer:
ok I don't know the first one
2.nucleus is the power of cell and that make a new organisms and also it control all of cell activities.
3.green
4.ya b/c it is made or get in green pigment.
5.that is unspecified of plant cell and get in chloroplaste.
Why don't the biggest and strongest individuals in a population always produce the most offspring?.
In some environments being big and strong lowers fitness
which is why it isn't a determining factor.
What are Offsprings?Offsprings are referred to as the young ones of organisms.
They are usually produced mostly as a result of different types
of cell divisions.
Big and strong individuals doesn't necessarily mean high fitness
level in terms of reproduction as cells of the gonads are usually
involved which is why it isn't a determinant.
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Name two ways that a cell would be harmed if the cell membrane were damaged.
will mark brainliest for right answer and explanation.
Answer: D Root hair, Xylem, mesophyll.
Explanation: Root hair (bottom) Xylem (stem) Mesophyll (leaf)
In cold areas, people light a campfire to keep themselves warm. Why do we feel warm near a campfire?
Immersive Reader
(1 Point)
a. because of the smoke released by the burning wood that pushes the cold air away from that region
c. because of the fire that heats up surrounding cold air, making it hot
c. There is no hot air at all. The light shines on us making us feel hot.
d. because of the heat that comes down from the top of the atmosphere because of the burning wood
Answer:
c. because of the fire that heats up surrounding cold air, making it hot
Explanation:
hope it helps
Humans and chimpanzees share roughly how much DNA?
for case # 2, use a guess and check method to determine whether the disease is dominant recessive or unknown. under each circle or square write the genotypes for each person
In case 2, we have a paternity problem, as the parents are recessive (aa) and the children are dominant (AA).
DOMINANCE AND RECCESSIVITYAn inheritance is said to be recessive when a certain trait is only expressed in zygosity, that is, an allele alone is not capable of manifesting a certain trait. We say that an inheritance is dominant when only one of the alleles is sufficient to manifest that trait. This means that this allele is expressed when it is zygous or heterozygous.
In this question, a verification method was requested to determine if the disease, however, exists a paternity error, this genealogy is not possible.
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With a population growth rate of 10%, how long will it take for a population to double from 37,000 to 74,000 people?
5 years
7 years
10 years
20 years
With a population growth rate of 10%, it will take 7 years for a population to double from 37,000 to 74,000 people.
What do you mean by Population growth?Population growth may be defined as the increase in the number of people in a population at a given time.
It is calculated by the formula:
λ = [tex]N_t+1/N_o[/tex]
where λ = rate of increase per generation
[tex]N_t+1[/tex] = No. of individuals after t+1 generation.
No = the Initial number of individuals in a population.
Nt + 1 = 37000 + 3700 = 40700.
No = 37000
λ = 40700/37000 = 1.1
Now, Nt + 7 = (λ)^7 × No = 1.1^7 × 37000 = 2 × 37000 = 74,000
Therefore, with a population growth rate of 10%, it will take 7 years for a population to double from 37,000 to 74,000 people.
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What type of cells has the ‘2n’ number of chromosomes?
Somatic cells or body cells has the [tex]2n[/tex] number of chromosomes.
In Australia, some native bugs eat the large fruit of an invasive plant by making a hole in the fruit’s thick skin with their mouthparts. The table below shows data that scientists collected about the bugs before and after the invasive plants were introduced. (S7L5a)1 pt.Bug CharacteristicsBefore Invasive PlantsAfter Invasive Plantsaveragelengthofmouthparts(female)6.81mm7.41mmaveragelengthofmouthparts(male)6.08mm6.48mmaveragebodylength(female)13.24mm13.65mmaveragebodylength(male)11.63mm11.92mmBased on the information in the table, which of the following best explains why this bug population has changed since the introduction of the invasive plants? A.The bugs are unable to feed on native fruits. B.Bugs with shorter mouthparts have all died off. C.Bugs with shorter mouthparts have all died off. D.The bugs have started cross-breeding with a larger species.8. Based on fossil evidence, scientists concluded that whales evolved from hoofed mammalian ancestors that lived on land. New evidence confirms this and suggests that among the hoofed mammals, the hippopotamus is the closest living relative of whales. Which of the following was the most likely source of this new evidence? (S7L5c)1 pt.A.Comparisons of lifespans B.Comparisons of gene sequencesC.Mapping of geographic distributions D.Calculation of population birth rates
7thGrade Unit 3 Pre-Assessment9. The illustrations below show a sugar glider and a flying squirrel. (S7L5b)1 pt.The sugar glider lives in Australia, and the flying squirrel lives in North America. The two species have many similar characteristics, including the ability to glide, but the sugar glider and the flying squirrel are not closely related species.Which of the following statements explains why the sugar glider and the flying squirrel both have the ability to glide?A.Both evolved at the same time in geologic history B.Both interbred and blended their gene pools in the past.C.Both learned to glide by imitating the same kinds of bird species.D.Both adapted to similar niches in which gliding increased their chances of survival10. Thousands of years ago, the jaws and teeth of jaguars were more varied in size than they are today. During a period of climate change about 11,000 years ago, jaguars faced a shortage of food. There were fewer mammals to eat, so the jaguars had to eat shelled reptiles. The jaguars with the largest jaws and teeth could most easily eat the shelled reptiles. Which of the following statements best explain why large jaws and teeth are common characteristics in jaguars today? (S7L5c)1pt.A.Jaguars with the smallest jaws and teeth died out completely.B.Jaguars with the smallest jaws and teeth were not ever able to mate.C.Jaguars with the largest jaws and teeth survived and reproduced more successfully than other jaguars.D.Jaguars with the largest jaws and teeth strengthened them by using them more frequently than other jaguars.
7thGrade Unit 3 Pre-AssessmentConstructed Response Items:11. A hawk has a genetic trait that gives it muchbetter eyesight than other hawks of the same species in the same area. Explain how this could lead to evolutionary change within this species of hawk over a long period of time. In your answer, be sure to include an explanation of:(S7L5b) 4pts (1pt.each)A.Competition within the hawk population1 pt.B.Survival of various individuals in the population1 pt.C.How the frequency of the better-eyesight trait would be expected to change over time within the population1 pt.D.What would most likely happen to the hawks having the better-eyesight trait if they also had unusually weak wing muscles1 pt.
Answer:
C
Explanation:
When the invasive plants were introduced, the bug population has changed since all of the bugs with shorter mouthparts have perished. So, the correct option is C.
What is Population?The term "population" is frequently used to describe the total number of people living in a particular location. To estimate the number of the residents within a certain territory, governments conduct censuses.
A population is the entire set of people in a group, whether that group is a country or a collection of people who share a certain trait. A population is the group of people that are selected when a statistical sample is taken in statistics.
In the case above, the introduction of invasive plants affected the bug population as all the bugs with shorter mouthparts perished.
So, the correct option is C.
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The diagram shows the different size of vacuoles between a plant cell and an animal cell why is the vacuole in a plant cell larger than a vacuole in an animal cell
Which type of enzyme is released outside of a cell?.
Answer:
exoenzyme
Explanation:
it is an enzyme that is *secreted by a cell and functions outside that cell
*produce or discharge
The gas that diffuses from xylem to the phloem at night
What is DNA polymerase?
Answer:
DNA pol./ymer/.a/ses are enzymes that create DNA molecules by assembling nucle.otides
Explanation:hope that helps have a good day (:
Answer:
A DNA polymerase is a member of a family of enzymes that catalyze the synthesis of DNA molecules from nucleoside triphosphates, the molecular precursors of DNA. These enzymes are essential for DNA replication and usually work in groups to create two identical DNA duplexes from a single original DNA duplex.
Explanation:
Suppose that one allele for an enzyme codes for a form that is active from pH 6.2 to pH 6.8 and another allele for this enzyme codes for a form that is active from pH 6.7 to 7.2. Heterozygous individuals show enzyme activity from pH 6.2 to 7.2. Why does this wider range of activity show overdominance
This range shows overdominance because heterozygous individuals make a mixture of two proteins with different optimums. Overdominance is a genetic phenomenon.
Overdominance and geneticsOverdominance is a phenomenon that occurs when the phenotype of a heterozygous individual is found outside the range of homo-zygous individuals.
This phenomenon (overdominance) is relatively common in genetics.
Overdominance confers an adaptive advantage to heterozygous individuals.
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The first stage of photosynthesis in a chloroplast is:.
Historically, the work of Charles Darwin and others described the larger picture of evolution. Since then, evolutionary and molecular biologists have attempted to find examples in the wild (as compared to a laboratory setting) that make connections between genetic variation and the processes of natural selection and genetic drift. How does this stickleback study help make these connections
Genetic variation is hard to be associated with evolution because most genetic variation is neutral. It means that most genetic variation occurs in non-coding regions.
Evolution and genomeEvolution refers to descendence with modification, which is mainly due to the differential process of natural selection.
Genetic variation is a prerequisite for evolution to occur, but that variation should (ideally) be localized in protein-coding regions.
It has been proposed that genetic variation in non-coding DNA regions can not modify the phenotype: however, an increasing body of evidence is showing that this assumption is not correct.
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Which type of protein would more likely function to stabilize and shape the plasma membrane?.
Answer: peripheral
Explanation:
In cellular respiration, glucose __________ electrons, whereas __________ electrons.
Answer:
During cellular respiration, glucose loses electrons wheras oxygen gains electrons.
Explanation:
Alleles for the same trait are separated from each
other during the process of
(A) mitosis.
(D) interphase.
(B) meiosis I.
(E) metaphase II.
(C) meiois II.
Answer:
B. Meiosis I
Explanation:
In meiosis I, it starts with a diploid cell with a homologous chromosome pair. The crossing of genetic material between chromosome pairs also occurs in this stage. The alleles containing the same trait would get separated so a new combination of alleles can be produced.
state the total number of deaths from TB in African
Answer:
I think they reach over 500 milion
Empirical research is very important in evolutionary biology. There are two main types of such research, which could be classified as __________.
There are two main types of research, which could be classified as manipulation and observation. Both types are fundamental in research.
Empirical research and evolutionEvolution is the subdiscipline in biology that studies how organisms change to adapt to challenging environmental conditions.
Empirical research refers to any scientific investigation in which conclusions are drawn from empirical evidence.
This type of research (empirical research) is based on observation of the natural world and experimental procedures.
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Why can proteins act as excellent catalysts of chemical reactions in the body?.
Answer: They contain substances/substrates in specific ways that heighten the chances of the chemicals reacting with each other
Explanation:
i took a similar quiz
Anthropologists deploy the method of ethnohistory to:_________.
i. provide state officials a verifiable history of a particular community or group.
ii. use purely archival documents in their research.
iii. study cultural change in periods for which a community had no written histories.
iv. blend quantitative and qualitative data to produce a concise timeline for the development of a particular community.
Given what we know, we can confirm that Anthropologists deploy the method of ethnohistory to study cultural change in periods for which a community had no written histories.
What is Ethnohistory?Ethnohistory is a method of study used by professionals such as anthropologists. This method uses a collection of historical records to produce data on previous civilizations and cultures.
Therefore, we can confirm that Anthropologists deploy the method of ethnohistory to study cultural change in periods for which a community had no written histories.
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