Answers
Answer:
the nucleus
Explanation:
Chromatin is a mass of genetic material composed of DNA and proteins that condense to form chromosomes during eukaryotic cell division. Chromatin is located in the nucleus of our cells. The primary function of chromatin is to compress the DNA into a compact unit that will be less voluminous and can fit within the nucleus.
Related Questions
What features allowed you to distinguish some of the organism on set 2
Answers
we cannot see the picture?
Determine the proportion of offspring phenotypes that would result when two merle dogs mate, if one dog is true-breeding for the long-coat trait and the other dog is true-breeding for the short-coat trait. ResetHelp
Answers
Answer:
100% long-coat
Explanation:
Assuming that the long-coat trait is represented by L allele and the short-coat trait by l allele.
True-breeding long-coat dog would have the genotype LL while true-breeding short-coat would have the genotype ll.
Assuming that the long-coat trait is dominant over the short-coat trait.
LL x ll
Ll Ll Ll Ll
All the offspring would have Ll genotype and would appear with long-coat phenotypically. Hence, the proportion of offspring phenotypes is 100% long coat.
Holstein cattle are normally black and white. A su- perb black and white bull, Charlie, was purchased by a farmer for $100,000. All the progeny sired by Charlie were normal in appearance. However, cer- tain pairs of his progeny, when interbred, produced red and white progeny at a frequency of about 25 percent. Charlie was soon removed from the stud lists of the Holstein breeders. Use symbols to ex- plain precisely why.
Answers
Answer and Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached file
how are blood stem cells targeted?
Answers
Answer:
replacing defective blood-making cells
Explanation:
Which is a compound that is only found in the cells of autotrophs that perform photosynthesis to enable these organisms to create their own food?
Answers
Answer: In photosynthesis, autotrophs use energy from the sun to convert water from the soil and carbon dioxide from the air into a nutrient called glucose. Glucose is a type of sugar. The glucose gives plants energy. Plants also use glucose to make cellulose, a substance they use to grow and build cell walls.
Which of the following is NOT one of the three reactants needed for a green plant to make its own food.
Answers
Answer:
d
Explanation:
Have the numbers of solid colored snails decreased significantly due to bird predation? Explain
your answer.
Answers
Answer:
Yes
Explanation:
birds pick out patterns because they are up in the air so the more brighter colored the snail the less of them there are
20. Edward Lambert, an Englishman, was born in 1717. Lambert had a skin disorder characterized by very thick skin that was shed periodically. The hairs on his skin were very coarse, like quills, giving him the name "porcupine man." Lambert had six sons, all of whom exhibited the same traits. The trait never appeared in his daughters. In fact, the trait has never been recorded in females. Provide an explanation for the inheritance of the "porcupine trait
Answers
Answer:
The trait is Y-linked
Explanation:
The only plausible explanation behind the inheritance pattern shown by the porcupine trait is that it is Y-linked.
Y-linked traits are limited to the Y chromosome only, a sex chromosome that is peculiar to only the male gender. Chromosomally, females are XX while males are XY. Hence, only the male gender has the genetic capacity to inherit the porcupine trait. This is why only the sons of Edward Lambert, and never the daughters, exhibited the trait.
which of these events is a likely result of chemical water pollution?
A. Sediment particles floating in water clog the gills of fish.
B. Fish die from lack of oxygen due to an algal bloom.
C. Rainbow trout disappear from a stream because of high water temperatures.
D. Algae are killed by solvents that have run off into a pond.
Answers
Fish die from lack of oxygen due to an algal bloom is a likely result of chemical water pollution. Therefore, option (B) is correct.
What is chemical water pollution?Chemical water pollution refers to the presence of harmful chemicals or substances in water bodies such as lakes, rivers, and oceans. These chemicals may come from various sources, including industrial processes, agriculture, and human activities. Common types of chemical pollutants in water include heavy metals, pesticides, oil spills, and toxic waste.
Chemical water pollution can have harmful effects on the environment and human health, including reduced water quality, contamination of aquatic life, and the spread of waterborne diseases. Preventative measures, such as proper waste disposal and treatment, are necessary to minimize chemical water pollution and protect water resources.
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PLEASE HELP!!!
• Humans have some...
A.) 7,000 cells
B.) I Million total cells
C.) 30-37 trillion cells
D.) 876 Quintillion cells
E.) we are not made of true cells
Answers
Answer:
C. 37.2 Trillion cells.
Explanation:
Charles Boyle was a scientist who studied the relationship between the
temperature and pressure of gases. According to Boyle, at a constant
temperature, the volume of a gas decreases as the pressure increases.
Which of the following terms describes Boyle's statement about how gases
behave?
A. Hypothesis
B. Observation
C. Theory
D. Scientific law
Answers
Answer:
D
Explanation:
Using a total of only five organs, design a digestive system that can absorb the maximum number of Calories from the apple. Describe your system below.
Answers
Answer:
Mouth, Small intestine, Large intestine, Rectum and blood capillaries
Explanation:
The five organs could be
A) mouth
B) small intestine: small intestine has three parts: the duodenum (attached to the stomach), the jejunum (the middle portion)
C) Large intestine
D) rectum and
E) placed capillaries and lymphatic vessels on the small intestine.
Digestion is a process in which breakdown of food molecules occurs, which provide nutrients to the body.
Digestion of an appleThe organs included in the digestion of an apple are :
Mouth: The apple cut down into smaller pieces by teeth. The saliva present in the mouth breakdown the starch present in the apple.Stomach: The stomach contain digestive juices like hydrochloric acid and other gastric juices. These juices mix with the apple.Duodenum : In duodenum, the breakdown of starch molecule happens.Ileum : Small finger like structure present in the organ called villi, which absorb sugar particles and vitamins and minerals present in the apple.Colon : The undigested waste travels through the colon and goes to another organ that is rectum.Rectum : The indigestive waste material went out from the body through rectum.These are the organs which can absorb the maximum number of Calories from the apple.
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The primitive streak eventually becomes what system?
Answers
Answer:
becomes the definitive endoderm
Explicitly explain how a living organism obtains energy after eating.
Answers
Answer:
Explanation:
Tiny bits of the food you ate break down into a simple sugar called glucose. In your cells, energy from the sugar is released when oxygen and glucose combine in a reaction. The reaction produces water, carbon dioxide, and energy in the form of ATP. This chemical process is happening all the time in your cells.
55.7 moles of PCl5 will decompose to produce how many moles of PCl3 and Cl2 combined ?Enter your answer correct to 1 decimal place
Answers
Answer:
55.7 moles of PCl₃ and 55.7 moles of Cl₂
Explanation:
The balanced chemical equation for the reaction in which phosphorus pentachloride (PCl₅) is decomposed in phosphorus trichloride gas (PCl₃) and chloride gas (Cl₂) is the following:
PCl₅(g) → PCl₃(g) + Cl₂(g)
According to the stoichiometric coefficients, 1 mol of PCl₅ produces 1 mol of PCl₃ and 1 mol of Cl₂. So, the stoichiometric ratios reactant/product are: 1 mol PCl₃/1 mol PCl₅ and 1 mol Cl₂/1 mol PCl₅. Thus, we multiply the stoichiometric ratios by the number of moles of reactant:
1 mol PCl₃/1 mol PCl₅ x 55.7 mol PCl₅ = 55.7 mol PCl₃
1 mol Cl₂/1 mol PCl₅ x 55.7 mol PCl₅ = 55.7 mol Cl₂
Therefore, 55.7 moles of PCl₃ and 55.7 moles of Cl₂ are obtained from the decomposition of 55.7 moles of PCl₅.
Why is Glycolysis also known as Alcoholic or lactic acid Fermentation?
Answers
Answer:
In lactic acid fermentation, pyruvate from glycolysis changes to lactic acid. This type of fermentation is carried out by the bacteria in yogurt, and by your own muscle cells. In alcoholic fermentation, pyruvate changes to alcohol and carbon dioxide. This type of fermentation is carried out by yeasts and some bacteria.
Dr. Digger, a paleontologist, finds a fossil that he describes in his journal.
The creature was approximately 1 meter long, with its backbone fused into a large shell covering the body cavity. It had a beaklike mouth, without teeth, and all four limbs were in the form of flippers.
Based on anatomical similarities, to which modern animal is Dr. Digger’s creature most closely related?
zebra
bony fish
sea turtle
snake
Answers
Answer:
sea turtle
Explanation:
it is conected to a shell and has flippers
It has a shell coverings its body as well as four limbs in the form of flippers
It is one of the most important step in conducting a survey by knowing the environmental concerns such as potential noise, air and water pollution.
a. know your area
b. know the local trees
c. know your market
d. know the people in the community
Answers
what advantage do multicellular organisms have over unicellular organisms?
Answers
Answer:
Explanation:
Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism and it has a large surface area to volume ratio while multicellular organisms use many different cells to function to help it transport enough molecules across it membrane.It has a small surface area to volume ratio!
The advantage of a multicellular organism over a unicellular organism is that multicellular organisms can grow to virtually any size because the cells integrate their activities and are permanently associated with one another.
Which of the following activities were asked about when determining activity level?
a. stretching and flexibility.
b. specific exercises like running, swimming, and biking.
c. moderate household chores.
d. resistance (weight) training.
e. sedentary activities like watching TV and computer use.
f. moderate exercise that causes increased heart and breathing rate.
Answers
Answer:
b. and f.
Explanation:
The two main categories of activities that are asked about are specific exercises like running, swimming, and biking. As well as moderate exercise that causes increased heart and breathing rate. These are asked about because they are separate physical activities from an individual's everyday life whether it is done as a hobby or for health reasons. They tend to influence the physical status and are therefore important when determining activity level. Other tasks are usually not included since they are considered normal for survival as everyday tasks.
As per the observation, the correct answers about the determining activity level are options:
b. specific exercises like running, swimming, biking, and f. moderate exercise that causes increased heart and breathing rate.
The primary classes of sports which are requested approximately are unique sporting activities like running, swimming, and biking. As properly a slight workout that reasons expanded coronary heart and respiration rate.
These are requested approximately due to the fact they're separate bodily sports from an individual's regular lifestyles whether or not it's miles executed as an interest or for fitness reasons. They have a tendency to steer the bodily reputation and are consequently critical while figuring out pastime level. Other responsibilities are typically now no longer covered because they're taken into consideration every day for survival as regular responsibilities.
What is the activity level?There are three essential approaches to describing the depth of an activity – vigorous, moderate, and gentle.
Thus it is clear that the following activities were asked about when determining activity levels were b. specific exercises like running, swimming, and biking. f. moderate exercise that causes increased heart and breathing rate.
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Can someone please help me with this I don’t know how to label them I really need help i need to turn it in please
Answers
Stores genetic information
B) cytoskeleton
Provides support
C) cytoplasm
Regulates transport
D) Golgi apparatus
Processes proteins
E) lysosome
Breakdown and recycle
F) flagellum
Movement
G) mitochondria
Energy harvest
You are monitoring Birch Lake,
Answers
A. Snails and crayfish would not survive in Birch Lake at a pH of 6.2.
B. Once they die out, the walleye will disappear as well.
This diagram is attempting to compare the sizes of the four inner planets. What is wrong with this diagram?
A.Mars is larger than Earth
B.Venus is larger than Earth
C.Mercury is not larger than Venus
D.Earth is not the largest inner planet.
Answers
B, Venus is less than Earth, and Earth is less than Mars
The trait for tall pea plants is (T) and the trait for short pea plants is (t). The trait for smooth pea plants is (R) and the trait for wrinkled is (r).Two plants are crossed producing a F1 generation of plants with 612 tall and smooth pea plants and 188 short and wrinkled pea plants.What would be the most likely genotype of the parental generation?
Answers
Answer:
P generation = TtRr × TtRr i.e both parents were heterozygote for both traits
Explanation:
This question involves two genes encoding the height and texture in pea plants respectively. The alleles for tall and smooth pea traits are dominant over the alelles for short and wrinkled traits.
According to this question, two plants are crossed to produce F1 offsprings as follows: 612 tall and smooth pea plants and 188 short and wrinkled pea plants.
First, we turn this derived number of offsprings into ratio by dividing by the smallest number (188)
612/188 : 188/188
3.25 : 1
Approximately; we can say this is 3 (tall and smooth) : 1 (short and wrinkled)
Based on this ratio, which was got by Mendel for his F1 offsprings when he crossed pea plants, the parental generation has a heterozygous genotype (TtRr).
Collect data: Blood carries many vital substances. Four of these are listed above the Microscopic view. Oxygen and sugar are needed by all body cells. Carbon dioxide and urea are waste products. What are the concentrations of each substance in this sample?
Oxygen:
Carbon Dioxide:
Sugar:
Urea:
Answers
Answer:
Explanation:
in the given sample of blood concentration of all the comonents is normal. the concentration of urea is 2.6 to 6.5 mM, concentration of carbon dioxide is 23-29 meq/L, while concentration of glucose ad oxygen are 0.9 g and 20.1 ml respectively.
Blood is the component of the circulatory system which is essential for the transport of gases and excretion of waste products. It is crucial for nutrient and oxygen supply to the body.
The concentration of oxygen was 95.6 mmHg, carbon dioxide 39.3 mmHg, Sugar 115.5 mg and urea 13 mg.
The vital substance of blood can be explained as:Red blood cells are called erythrocytes that are responsible for oxygen transportation through the hemoglobin component to the body parts while on their way back it carries the carbon dioxide.Sugar is the major form of energy needed by the body for functioning which enters the blood from the liver.Urea is the waste complement removed with the help of blood collected from the liver and excreted by kidneys.Therefore, the normal concentration of blood substances is oxygen 95.6 mmHg, carbon dioxide 39.3 mmHg, Sugar 115.5 mg and urea 13 mg.
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The Jules Verne novel "20,000 Leagues Under the Sea" tells the story of the voyage of the submarine Nautilus. If one league equals 3 miles, how many kilometers did the Nautilus travel on its journey? Please round your answer to the 100's place
Answers
Answer:
96558.00 kilometers
Explanation:
From the title of the novel, it is assumed that the submarine covered 20,00 leagues on its journey.
1 league = 3 miles, therefore;
20,000 leagues = 20,000 x 3 = 60,000 miles.
1 mile = 1.6093 km
Hence,
60,000 miles = 60,000 x 1.6093 km
= 96,558 km
= 96558.00 km to the 100's place
Therefore, 96558.00 kilometers was covered by Nautilus during the journey.
How long can a bearded dragon spend on a car ride without uvb.
Answers
What will we do with waste materials? Waste water, garbage, sewage, industrial pollutants--the amount of waste produced grows
each year. The increasing amount of waste materials also requires a growing need for professionals in the field of
A)
world politics.
B)
energy conservation
C)
environmental engineering
D)
marketing and cost analysis.
Answers
Answer: environmental engineering
Explanation:
Place the following labels in the proper position to designate what effect each condition would have on membrane physiology.
Categories:
1) Makes RMP (Resting Membrane Potential) Less Negative
2) Influences the Ability of the Cell to Repolarize
3) Influences the Ability of the Cell to Depolarize
Place in the three categories above:
a) Voltage regulated potassium channels are blocked
b) Decreased concentration of leaky potassium channels in the membrane
c) Acetylcholine esterase concentration is decreased
d) ATP stores are declining through mitochondrial poison (arsenic)
e) The size of the synaptic cleft is increased
f) Hyperhydration (high water concentration in ECF)
g) Release of excitatory neurotransmitter by a presynaptic input is blocked
h) Hyponatremia (low ECF sodium)
i) Neurotransmitter synthesis is compromised due to Golgi dysfunction in the presynaptic neuron
j) Increased concentration of leaky sodium channels in the membrane
Answers
Answer:
1. B, D and J.
2. A and C.
3. E, F, G, H, AND I.
Explanation:
A cell can be defined as the fundamental or basic functional, structural and smallest unit of life for all living organisms. Some living organisms are unicellular while others are multicellular in nature. A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.
A membrane is a thin layer which forms the wall of the cell and typically controls what leaves and enters the cell.
Some of the effects of various biological conditions on membrane physiology are;
1. Makes RMP (Resting Membrane Potential) Less Negative: this simply means that it decreases RMP;
Decreased concentration of leaky potassium channels in the membrane. ATP stores are declining through mitochondrial poison (arsenic). Increased concentration of leaky sodium channels in the membrane.2. Influences the Ability of the Cell to Repolarize;
Voltage regulated potassium channels are blocked. Acetylcholine esterase concentration is decreased.3. Influences the Ability of the Cell to Depolarize;
The size of the synaptic cleft is increased. Hyperhydration (high water concentration in ECF). Release of excitatory neurotransmitter by a presynaptic input is blocked. Hyponatremia (low ECF sodium).Neurotransmitter synthesis is compromised due to Golgi dysfunction in the presynaptic neuron.Which of the following best describes the function of the immune system's response to bacterial invasion of the extracellular fluid?
a. a system that produces swelling and redness at the site of infection in order to flush out bacteria from the extracellular fluid
b. a system that inhibits the production of antibodies and histamine, resulting in bacterial death
c. a system that uses only intracellular chemicals to destroy invading bacteria
d. a system that enhances the destruction of bacteria through the activation of mast cells, lymphocytes, and phagocytes
Answers
Answer:
d. a system that enhances the destruction of bacteria through the activation of mast cells, lymphocytes, and phagocytes
Explanation:
Mast cells are white blood cells (i.e., lymphocytes) that form part of the immune system. These cells form part of the first line of defense against pathogenic organisms. Some of the most important phagocytic cells that function to protect the body by ingesting pathogenic agents (e.g., harmful bacteria) include mast cells, monocytes, neutrophils, macrophages and dendritic cells. In this regard, it is important to highlight that mast cells are similar to basophil granulocytes (another type of lymphocyte), and they are derived from hematopoietic stem cells.