A eukaryotic chromosome consists of histones.
Properties of eukaryotic chromosomeEukaryotes posses pairs of linear of chromosomes and they are all contained in the nucleus of the cell, possessing characteristic forms.
Eukaryotic chromosomes consists of histones which are condensed and DNA surrounding nuclear proteins.
Therefore, a eukaryotic chromosome consists of histones.
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which cellular component of our body are involved in developing infection
Answer:
the white blood cells or leucocytes
A molecule that can be used as a molecular clock has a neutral mutation rate of one mutation per 12 million years. How many years ago did two species share a common ancestor if the molecules found in these two species differ by a total of six mutations?
a 1.5 million years
b 72 million years
c 12 million years
d 36 million years
The years in which two species share a common ancestor if the molecules found in these two species differ by a total of six mutations is 72 million years.
What is mutation?Mutation is the changing of gene or characters of any species over time, there are many reasons for mutation, like natural selection.
Every 12 million years, the molecular clock will mutate.
If the molecular clock experiences six mutations, 12 million years multiplied by 6 have passed.
12 x 6 = 72
Thus, the years are 72 million years. Option is b.
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Answer:
D) 36 million
Explanation:
The person above forgot the last step: Divide by the number of species
Determine which type(s) of blood this patient can safely receive. Check all that apply. A B AB O Also, the patient should receive blood that is for Rh.
People who are AB can receive blood from all types of blood groups.
What is Blood group?This is the classification of blood based on polymorphisms in antigens on the surfaces of the red blood cells.
There are four types of blood groups and the AB is known as universal recipient which means it can receive blood from any of them. Also the patient should receive blood that is positive for Rh as it will not make anti-Rh antibodies which may destroy cells of the fetus.
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Answer: B and O........ Also, the patient can recieve blood that is NEGATIVE (only)
Explanation: these are the correct options on edge, i hope this helps!! :D
A housewife used excessive amount of sodium nitrate and phosphate fertiliser to her tree,
after 3 days, she found her tree had withered and died.
Answer:
excessive amount of fertiliser can cause high amount of acidic medium to the plant which can lead to death of many microbes necessary for the plant to survive.
there are a certain conditions in which the plants can survive, any change to that or Amy change in habitat will lead the plants to died
Which occurs when the body responds to the environment.
yes
(not enough information given)
What are the two types of hypotheses used in a hypothesis test? how are they related?.
Answer:
the null hypothesis and the alternative hypothesis.
Explanation:
null contains a statement of equality (greather than or equal to, less than or equal to, equal to) and the alternative is the complement of the null hypothesis statement that must be true if H0 is false and it contains a statement of strict inequality (greater than, less than, not equal to)
Glucose provides energy for cells. Different cells have different mechanisms for glucose intake. Intestinal cells contain proteins that transport glucose against its concentration gradient. These proteins couple the movement of glucose to the movement of sodium down its concentration gradient. Red blood cells have transporter proteins embedded in their membranes. When bound by a glucose molecule, these proteins change shape and allow glucose to move down its concentration gradient into the cell.
Based on this information, what type of transport is used for glucose in blood and intestinal cells?
A.
Both blood and intestinal cells take in glucose by passive transport.
B.
Blood cells take in glucose by active transport and intestinal cells take in glucose by passive transport.
C.
Blood cells take in glucose by passive transport and intestinal cells take in glucose by active transport.
D.
Both blood and intestinal cells take in glucose by active transport.
Both blood and intestinal cells take in glucose by passive transport. Thus, the correct option is B.
What is facilitated diffusion?A transport protein found in the plasma membrane facilitates diffusion, which is the passive movement of things like biological molecules or ions across a plasma membrane. Chemical energy is neither utilized nor required because compounds are moved from higher to lower concentrations.
Glucose is absorbed by the mechanisms of facilitated diffusion or passive transport across the membrane of red blood cells. The sugar glucose is transferred by active transport from the gut into intestinal epithelial cells.
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A student wants to know which part of his local beach contains the most turtle nests during nesting season. He researches turtle nesting and plans his experiment. Once his experiment is completed, he gathers his evidence and analyzes it to form a conclusion. What part of the scientific method is he missing from this investigation
The part of the scientific method is he missing from this investigation is the construction of a hypothesis.
What is an investigation?It should be noted that an investigation refers to the process carried out in order to get information about a topic.
In this case, the part of the scientific method is he missing from this investigation is the construction of a hypothesis.
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Drag the tiles to the correct boxes to complete the pairs.
Match the factors affecting genetic diversity with the examples.
m. All rights reserved.
habitat fragmentation
pollution
exploitation
sewage from cities dumped into vers
sections of large forests cut down for resources
Burmese pythons Infesting the Everglades
rhinos Indiscriminately killed for their horns
▶ O GE
invasive species
101
N
Factors that affect genetic diversity are:
sewage from cities dumped in vers - pollutionsections of large forests cut by resources - habitat fragmentationBurmese pythons infesting the Everglades - invasive speciesrhinos indiscriminately killed by their horns - explorationWhat is genetic diversity of an example?
The diversity of alleles of individuals of the same species is what we call genetic variability.
Haireyeskin colorheight and voice,for example, are characteristics present in human beings that make us quickly understand that we have phenotypic variations in relation to others.
With this information, we can conclude that Factors that affect genetic diversity are: sewage from cities dumped in vers - pollution, sections of large forests cut by resources - habitat fragmentation, Burmese pythons infesting the Everglades - invasive species, rhinos indiscriminately killed by their horns - exploration
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Retell the story of how the moon formed. integrate as many of the moon's features into the story as possible.
The moon formed due to the collision of earth and other small planet.
How the moon formed?The Moon formed during a collision between the Earth and another small planet about the size of Mars. Due to this collision, the debris from this collision was collected in an orbit around Earth which leads to the formation of the Moon.
So we can conclude that the moon formed due to the collision of earth and other small planet.
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Spontaneous genetic mutations are one cause of cancer. They can happen at any time for various reasons such as exposure to certain carcinogens. Researchers are working to understand more about what causes them. If X is how many mutations there are in a person's body at time Y, X is a ________ random variable.
If X is how many mutations there are in a person's body at time Y, X is a discrete random variables.
What are discrete random variables?Discrete random variables are those variables that depends upon the numerical outcomes of a certain random phenomenon.
The X which is the number of mutations that are present in a person's body is dependent on Y which is time that varies.
Therefore, If X is how many mutations there are in a person's body at time Y, X is a discrete random variables.
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) If you are a good school agriclture focal person, what type of forming would you suggest to the school? Give reasons. Teacher's Signature. ) If you are a good school agriclture focal person , what type of forming would you suggest to the school ? Give reasons . Teacher's Signature .
Answer:
Farm-to-school programs are a great way to get students excited about healthy eating.
Explanation:
What is an adverse effect of Rocuronium, Atracurium, Tubocurarine, Pancuronium?
An adverse effects of the drugs Rocuronium, Atracurium, Tubocurarine, and Pancuronium is high or low blood pressure.
What are adverse drug effects?Adverse drug effects are effects produced by drugs which are not what they were intended for.
Adverse effects of drugs may range from mild to severe adverse effects.
The drugs Rocuronium, Atracurium, Tubocurarine, and Pancuronium are muscle relaxant drugs.
An adverse effects of Rocuronium, Atracurium, Tubocurarine, and Pancuronium is high or low blood pressure.
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what do sensory neurons do with the information from the receptors ?
According to the research, sensory neurons transmit the information from the receptors to the spinal cord.
What are sensory neurons?They are those neurons located in sensory organs or in areas of the nervous system related to the integration of sensations.
These transmit the information from receptors in the body's tissues and sensory organs to the spinal cord.
Therefore, we can conclude that according to the research, sensory neurons transmit the information from the receptors to the spinal cord.
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Land and ocean surfaces at the equator receive the greatest amounts of solar energy
because
1) the sun's rays strike at an angle.
2) convection is greater at the equator.
3) these is less rotation at the equator.
4) the sun's rays strike directly.
Answer:
the equator receives the most solid residential for unit area because sunlight arise almost parapendicular towards surface their
State two examples of each plant cell and animal cell
Answer:
(a)root hair cell and palisade cell
(b)Blood cell and Tissue cell
What does the term angiosperm literally mean?
A. seed leaf
B. enclosed seed
C. open seed
D. seed cone
Answer:
Angiosperm. n., plural: angiosperms. [ˈændʒɪəˌspɜːm] A flowering, fruit-bearing plant or tree known for having ovules (and therefore seeds) develop within an enclosed ovary.
Answer: B. Enclosed seed
Explanation:
Haploid and diploid are terms that represent the ______ of an organism.
Haploid and diploid are terms that represent the sets of the chromosome of an organism.
What do you mean by chromosomes?The thread-like components known as chromosomes are found in the nucleus of both animal and plant cells. Protein and a single molecule of deoxyribonucleic acid make up each chromosome (DNA).
When an organism's cells only have one set of chromosomes, the organism is said to be a haploid. All organisms that reproduce sexually are diploid (having two sets of chromosomes, one from each parent). Only the egg and sperm cells in humans are haploid.
The number of chromosomes found inside a cell's nucleus is known as the diploid chromosomal number. The symbol for this number is 2n. Each organism has a different one. In contrast to sex cells, somatic cells are diploid.
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which is s true for both photosynthesis and cellular respiration
subcutaneous emphysema is an indication that
Subcutaneous emphysema is an indication that damage caused by excessive pressure has occurred.
What is subcutaneous emphysema?The term subcutaneous emphysema is a situation in which air is found to enter into the sensitive tissues that are found below the skin.
It could be caused when there is an excessive pressure on the tissue. Thus subcutaneous emphysema is an indication that damage caused by excessive pressure has occurred.
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Did you model weathering, erosion, or both in this lab? Give an example of a step of the lab in which you modeled a process to support your statement. If you say that you did not model one process, describe a way in which you could model that process using the same graham cracker setup.
Modeling of weathering and erosion can be performed in lab.
Lab: Investigate Weathering and ErosionIn this lab, we will be modeling the processes that break down rock using graham crackers as the crust and water and ices erosion agents.
Materials:Graham crackers: at least 2 identical rectangular sectionsPlastic knifeFrostingBowl3 clear glassesEyedropper/medicine dropperWaterIce cube tray or similar freezable containers smaller than a graham crackerAdditional materials as needed for your investigation, such as more graham crackers, hot water, ice, lemon juice, or a drinking strawProcedure of Modeling Weathering and Erosion using graham cracker:
1. Fill the ice cube tray or other tiny containers with 100 drops of water in each of the two or three cells using the eyedropper. Make the water entirely solid by freezing it for however long(for 3-4 hrs.).
2. Insert one graham cracker section into the bowl. To create a ramp-like structure out of the Graham Cracker, place one end on the bowl's lip and the other end at the bottom. To secure the cracker to the side of the bowl, dab some icing on the back of the cracker.
3.Add water to the eyedropper. Hold the dropper at a height of about 1 inch above the cracker's top. the dropper over the cracker in the middle. Apply 100 drips, always aiming for the same area.
4.Keep an eye on what the cracker does. Keep a record of your findings.
5. Pour the water into a glass that is clear after removing the Graham cracker. Make notes about the water, grading its cloudiness among your observations.
6.In the same manner as in step 2, clean and dry the bowl and add a Graham cracker to it. Grab an ice cube and wipe it over the graham cracker until it melts completely.
7.Remove the graham cracker and pour the melted water into the clear glass.
Result:Appearance of water collected after is moved across graham cracker.
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Which two things should the scrum team do during the first sprint?
Two things that the scrum team have to do in the first sprint are
Deliver an increment of releasable software. Develop and deliver at least one piece of functionality.What is a scrum team?This is a team that is usually made up of 5 people to 9 people. These people are a team of collaborators.
They team up to ensure that products are developed, completed and also delivered.
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Explain how the structure of the nephron and its associated blood vesseles enable the kidney to carry out its functions
The explanation of how the structure of the nephron and its associated blood vessels is; As described below
What is the Operation of the Kidney?The way the kidney is enabled to carry out its' functions are the processes below;
Each human kidney is made up of approximately one million filtering units called nephrons. Now, each nephron includes a filter, called the glomerulus, and a tubule.
Finally, the nephrons work through a two-step process namely;
- The glomerulus filters your blood. Ultrafiltration in glomerulus - smaller molecules filtered out in the glomerulus (e.g. glucose, water, minerals)
- The tubule returns needed substances to your blood and removes wastes.
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Though it could theoretically hold terabytes of data for thousands of years in a microscopic space, ________ storage, using genetic material, is a distant storage option.\
DNA storage using genetic material is considered a distant storage option for holding data in a microscopic space.
What is DNA?This is referred to as deoxyribonucleic acid and it contains the genetic instruction of cells.
The instruction has been theoretically known to hold terabytes of data for thousands of years which makes it a storage option in the future.
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Explain why the plant with the mutated psaB gene was dying
As given in the graph, mutation in this gene causes a decline in the production of glucose as it obstruct the process of photosynthesis.
What is psaB gene?P700, the primary electron donor of photosystem I (PSI), as well as the electron acceptors A0, A1, and FX, are bound by PsaA and PsaB.
As given in the graph, mutation in this gene causes a decline in the production of glucose as it obstruct the process of photosynthesis.
Thus, the plant with the mutated psaB gene was dying.
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When a red onion cell is placed in a 5% NaCl solution, the central vacuole will occupy
A) even more of the cell than when it was in water
B) less of the cell than when it was in water
C) the same amount of the cell as when it was in water
Answer:
A=even more of the cell than when it was in water
Answer:
When a red onion cell is placed in a 5% NaCl solution, the central vacuole will occupy
B) less of the cell than when it was in water
This is due to plasmolysis
Explanation:
What is plasmolysis?Plasmolysis is the process in which there is a loss of water from cells when these are placed in a hypertonic solution. The protoplast and vacuole shrinks away from the cell wall.
What is a hypertonic solution?Hypertonic solution is that which has higher concentration of solutes (low water concentration) as compared to inside the cell. As water moves from high conc. to low conc., it moves from inside the cell to outside. Thus, the vacuole pulls away from the cell when placed in a hypertonic solution (5% NaCl).
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Hello people ~
Which of these is not a process that can cause speciation?
A. Seasonal migration
B. Asexual reproduction
C. Mate selection
D. Genetic damage
Answer:
I believe it's D. asexual reproduction
Identify the emergent properties of the human respiratory system
The human respiratory system is composed by nose and mouth and continues through the airways and lungs. Air enters the respiratory system through the nose and mouth, passing through the throat (pharynx) and voice box or larynx.
What is the importance of the respiratory system?The respiratory system allows the exchange of gases with atmospheric air, ensuring the concentration of oxygen in the blood, necessary for the body's metabolic reactions, and on the other hand serving as a route for the elimination of residual gases, such as carbon dioxide.
In this case, we can see the multicellular organisms show emergent properties; these are properties that exist due to many different components working together.
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How many layers of tissue does an artery have?
The Artery contains three layers of tissue; Intima, media and adventitia.
The artery plays a vital role in the body; the artery carries blood away from the heart. This blood vessel carries blood away from the heart to important organs and tissues in the body.
There are there types of arteries; Elastic arteries, muscular arteries and Arterioles
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The origins of the lateral head of the gastrocnemius muscle are the __________.
The origins of the lateral head of the gastrocnemius muscle are the lateral condyle and posterior surface of the femur.
What is a gastrocnemius muscle?A gastrocnemius muscle is also referred to as leg triceps and it can be defined as the largest, posterior, and most superficial muscle of the calf of the human leg, which enables the flexing of the knee and foot because it runs to the Achilles tendon from two lateral heads that are attached to the femur.
In this context, we can infer and logically deduce that the lateral condyle and posterior surface of the femur are the origins of the lateral head of the gastrocnemius muscle.
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