Answer:
2) hydrostatic pressure of capillary blood
Explanation:
Hydrostatic pressure is the type of pressure exerted by any fluid in a confined space.
This force of hydrostatic pressure simply means that when blood moves along the capillary, fluid which contain nutrients and other basic substances are usually moved out through its pores and into the interstitial space.
In the fluid mosaic model of membrane structure, Select one: a. the proteins exist in a bilayer formation. b. the phospholipids are tightly bound in place. c. the carbohydrates are found exclusively on the intracellular surface of the membrane. d. the phospholipids act as a barrier to the passage of polar substances between the ICF and ECF e. the phospholipids arrange themselves into the shape of a channel, in order to allow ions to transport across the membrane.
Answer:
D) The phospholipids act as a barrier to the passage of polar substances between the ICF and ECF
Explanation:
The plasma membrane is made up of four major kinds of molecules which include; proteins, carbohydrates, cholesterol and phospholipids.
Phospholipids are the main structure of plasma membranes. The structure of phospholipids help it serve as a barrier by playing a role in the regulation of the movement of polar molecules intracellular and extracellular fluid compartments and therefore, protect the cell.
The phospholipid structure can be described as having two ends of a head and a tail. The head end is hydrophilic or water-loving, and contains a phosphate group. The tail is hydrophobic and is made up of fatty acid chains.
Phospholipids are arranged in a bilayer with the hydrophilic head facing outwards into the ECF and ICF and the hydrophobic tail facing inwards.
Examples of phospholipids found in the plasma membrane are phosphatidylcholine and phosphatidylserine.
One mechanism by which viruses may cause cancer is to interrupt the genetic regulatory sequences of repressor proteins. Which of the following types of viruses is most likely to be involved in causing cancer by this mechanism?A) +ssRNA virusesB) dsRNA virusesC) -ssRNA virusesD) retrovirusesE) +ssRNA and -ssRNA viruses
Answer: D) retroviruses
Explanation:
Retroviruses are a type of virus that converts its genetic material into DNA using a special enzyme, called reverse transcriptase. The DNA is then able to integrate into the DNA of the host cell. Once integrated, the virus can make additional viral particles using the components of the host cell.
Retroviruses which cause cancer at low incidence do not contain host information inserted. Rather, they tend to cause cancer via the expression mutation of potentially oncogenic host genes. Retroviruses incorporate proviral DNA into their host's chromosomal DNA during their natural life-cycle. Provirus DNA promoter affect regulatory gene expression over.
Hence, the correct option is D.
1.
Choose the best answer.
The Golgi apparatus is the _____ of the city.
post office
power plant
city hall
manufacturing plant
2.
Choose the best answer.
How does a negative feedback loop respond to a variable?
speeds up the process
changes the stimulus
stops the stimulus
makes no change
3.
Choose the best answer.
Which organelle is RNA contained in?
endoplasmic reticulum
ribosomes
nucleus
cell membrane
4.
Choose the best answer.
The heart is made of which type of tissue?
cardiac
muscular
skeletal
smooth
5.
Choose the best answer.
Homeostasis keeps the body _____.
balanced or stable
unbalanced
in a positive feedback loop
in a negative feedback loop
6.
Choose the best answer.
Which of the following processes is a positive feedback mechanism of the endocrine system?
glucose control
reflex
temperature control
clotting
7.
Choose the best answer.
What is the function of muscular tissue?
movement
secretion
protection
absorption
8.
Choose the best answer.
What is it called when areolar tissue collects water?
tissue collection
osmosis
inflammation
edema
9.
Choose the best answer.
The nucleus is the _____ of the city.
transportation
post office
manufacturing plant
city hall
10.
Choose the best answer.
The city limits represents which part of the cell?
cell membrane
lysosomes
cytoplasm
nucleus
11.
Choose the best answer.
Which level of organization is blood?
cell
organ
organ system
tissue
12.
Choose the best answer.
What happens during prophase?
the nucleus disappears
chromosomes move to the edges
cell life cycle
cells reproduce
13.
Choose the best answer.
What is the function of the mitochondria?
packaging proteins
energy
control mechanisms
reproduction
14.
Choose the best answer.
Contractions during labor are _____ feedback mechanism.
positive
mitotic
negative
meiotic
15.
Choose the best answer.
Simple epithelial tissue has _____ layer(s).
two
one
three
four
16.
Choose the best answer.
Which is NOT a classification of muscle tissue?
dense
cardiac
skeletal
smooth
17.
Choose the best answer.
How does a positive feedback loop respond to a variable?
changes the stimulus
makes no change
increases the stimulus
stops the stimulus
18.
Choose the best answer.
Lysosomes are responsible for _____.
waste removal
control mechanisms
reproduction
packaging proteins
19.
Choose the best answer.
An overgrowth of cells is called _____.
cytokinesis
meiosis
cancer
disease
20.
Choose the best answer.
What is the receptor’s role in the homeostatic control mechanisms?
determines the best response
sets the control point
sends the message to the variable
recognizes the variable
Answer: manufacturing plant
Explanation:
Answer:
1.post office
2.changes the stimulus
3.nucleus
4.muscular
5.balance or stable
6.reflex
7.movement
8.tissue collection
9.city hall
Which Kingdom is represented by the following description: All are multicellular organisms, reproduce sexually or asexually, cannot move, and are autotrophs
Plant
Animal
Fungi
Protist
Answer:
Plants
Explanation:
They are multicellular organisms. In plants there are two types of reproduction :- sexual and asexual. Sexual reproduction happens when androecium and gynoecium both fuses and in asexual reproduction when only androecium or gynoecium is present in a plant. Androecium us a male part off flower and gynoecium is the female part of flower. Plants can't move that we all know and they are autotrophs coz they can make their own food in presence of sunlight, water, air and chlorophyll.....
I hope u will understand it :-) :-)
Which of the following is not true of homologous recombination? Only occurs between regions of DNA sharing >50 basepairs of nearly identical sequence. Can repair a collapsed replication fork. Always accompanied by some loss of DNA sequence. Responsible for crossing over at meiosis. Can repair a double-stranded break in chromosomal DNA.
Explanation:
Always accompanied by some loss of DNA sequence is not true of homologous recombination
Homologous recombination is a type of genetic recombination which requires homology between two DNA moleculesSingle stranded break occurs in same position of both DNA, after that strand invasion occurs Each invading strand joins to the broken end of other DNA molecule, creating a Holliday junctionHolliday junction predicts cross over or non cross over recombinant DNA, depends on whether cleavage is on vertical or horizontal planeCleavage in vertical plane produces cross over recombinant consisting of two heteroduplex DNAName four parts of the respiratory system in order that air comes into the body, and describe the role it plays in respiration.
Answer:The pharynx, larynx, trachea and bronchi are four parts of the respitaory system that air comes into the body. the role that they play in respiration is that they bring oxygen into our blood stream and then help push out carbon dioxide into the atmosphere
ezra fits aka Mr.fitz ( Pretty Little Liars)
The four parts of the respiratory system through which air enters the body are the nose, pharynx, larynx, and trachea.
Parts of the respiratory system?Nose: Air enters the body through the nostrils, where it is filtered, humidified, and warmed. Tiny hair-like structures called cilia trap particles, preventing them from entering the lungs.
Pharynx: The air then moves to the pharynx, a passage connecting the nasal cavity and the mouth. It serves as a common pathway for both air and food, directing air into the trachea and food into the esophagus.
Larynx: The larynx, also known as the voice box, contains the vocal cords. It prevents food and liquids from entering the trachea during swallowing and produces sound when air passes over the vocal cords.
Trachea: Air travels down the trachea, a tube reinforced with C-shaped cartilage rings that prevent collapse. The trachea branches into bronchi, leading to the lungs.
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What structural component gives arteries the ability to passively adapt to changes in blood pressures that accompany the heartbeat?
Answer: elastic fibers
Explanation:
Elastic fibres are the essential durable component present in mammalian connective tissueand functions to provide proper pulmonary, cardiovascular and intestinal system structure and function. Their structural function is to provide elastic recoil and resilience for the tissues.
Elastin fibers ahve two main including microfibrils and elastin containing fibrillin play a mechanical and structural role in the arteries, and their important function is to provide the tissues with resilience and elasticity.
Hence, elastic fibers helps arteries to adapt to changes in blood pressures that accompany the heartbeat.
Diseases of animals that may be transmitted to humans are described as
Answer:
Zoonotic Diseases
Explanation:
Zoonotic Diseases: Disease Transmitted from Animals to Humans. A zoonosis (zoonotic disease or zoonoses -plural) is an infectious disease that is transmitted between species from animals to humans (or from humans to animals)
Example: Corona virus
Animals that commonly transit diseases : Rat, Bat
What are some of the conditions that hydrotherapy might be used for? Why would it be a good choice for helping to treat these conditions?
Explanation:
Hydrotherapy is the use of water in the treatment of different conditions, including arthritis and related rheumatic complaintsThe water temperature is usually 33–36ºC, which is warmer than a typical swimming poolHydrotherapy can help people in a number of different ways: The warmth of the water allows the muscles to relax and eases the pain in jointsThe water supports weight, which helps to relieve pain and increase the range of movement of jointsThe water can be used to provide resistance for moving the joints, by pushing arms and legs against the water muscle strength can also be improvedYou are concerned with surveying the protozoa in the arboretum soil. While most commonly thought to live exclusively in aquatic environments, protozoa can play an important role in the nutrient cycling that takes place in soil. In addition, protozoa can help maintain the proper balance of bacterial populations within soil, as bacteria are a primary source of food for protozoa.
Protozoa are extremely diverse. However, there are three characteristics common to all organisms called protozoa. What are these three characteristics?
Choose the answer that best describes the three characteristics common to all protozoa.
eukaryotic, contain chloroplasts, produce energy via mitochondria
eukaryotic, use cilia for motility, produce energy via mitochondria
eukaryotic, unicellular, lack a cell wall
eukaryotic, reproduce sexually, contain chloroplasts
Answer:
eukaryotic, unicellular, lack a cell wall
Explanation:
The protozoa are eukaryotic, unicellular animals whose cell lack cell wall. In addition, they posses the following characteristics:
They live as either free living or parasite in nature. As such, they feed heterotrophically.They are mostly motile through the use of organs like cilia. pseudopodia or flagella.Their size ranges from one micron to several millimeters.They mostly reproduce by binary fission.Answer:
The correct answer is "eukaryotic, unicellular, lack a cell wall".
Explanation:
Three characteristics that all organisms called protozoa posses is that they all are eukaryotic, unicellular and they lack of a cell wall. Actually the therm "protozoa" is an informal name given to any single-celled eukaryotic organism, which could be either a parasite or could be a free living organism. All protozoa lack a cell wall, which helps them to infect and live from other organisms in the case of the parasitic protozoa.
is a topographic map or a geologic map most useful for drilling a water well
Answer:
A geologic map would be most appropriate because it can represent various layers of Earth’s surface from a side view or cross section. Such a map would be helpful in drilling a water well because it would show the different layers of rock and their depths, and would reveal where groundwater was and how deep they would need to drill to reach it.
Explanation:
55. In cocker spaniels, black coat color (B) is dominant over red (b), and solid color (S) is dominant over spotted (s). If Bb Ss were crossed with Bb ss, the chance that a black solid individual would be produced is a. 3/16. b. 1/3. c. 9/16. d. 3/8. e. 1/16.
Answer:
d. 3/8
Explanation:
Black coat color (B) is dominant over red coat color (b) and solid color (S) is dominant over spotted color (b).
BbSs was crossed with Bbss
BbSs x Bbss
Offspring:
2 BBSs black, solid
2 BBss black, spotted
4 BbSs black solid
4 Bbss black, spotted
2 bbSs red, solid
2 bbss red spotted
Total black solid = 6
Hence, the chance that black solid individual would be produced = 6/16 = 3/8.
The correct option is d.
See the attached for the Punnet's square analysis.
When dna from two sources is combined into one single piece of dna
Answer:
Recombinant DNA and genetic techniques. Recombinant DNA (or rDNA) is made by combining DNA from two or more sources. In practice, the process often involves combining the DNA of different organisms.
Explanation:
Answer:
It is known as recombinant DNA
Explanation:
Recombinant DNA involves the combination of DNA from two or more sources, often of different organisms
Duncan was a subject in a clinical study that was designed to determine the effects of certain diets on health. While participating in the study, he had to live in a special medical unit at the university hospital. He wasn't permitted to eat anything other than the synthetic formula diet provided by the researchers. The formula contained vitamins, choline, minerals, animal protein, purified water, and corn starch. Within a few weeks, Duncan developed patches of scaly skin on his arms and legs and bald spots on his head. When _____ were added to his formula, the signs of the nutritional deficiency disappeared.
Answer:
The missing options are:
- steroid hormones
- carbs
- essential fatty acids
- PHO
The correct answer is essential fatty acids.
Explanation:
Essential fatty acids are the fats that our body can not produce by itself, but that are essential for the function of the body, so we have to consume foods that have these fats, such as fish, oysters, nuts, chia seeds, soybean oil, etc. The deficiency of these fats causes skin problems, alopecia, anxiety, depression, among other things.
Why do cattle sex cells (egg and sperm cells) only have 30 chromosomes while the cattle's other cells have 60 chromosomes?
Answer:
Explanation:
becase it is the way it is the why the have alot of babe when th4e sperm in a girl
Cattle sex cells (egg and sperm cells) have only 30 chromosomes because they are haploid cells, meaning they contain a single set of chromosomes. This is in contrast to the other cells in cattle, which are diploid and contain two sets of chromosomes, making a total of 60 chromosomes. The process by which haploid cells are formed is called meiosis, and it ensures that when an egg and a sperm fuse during fertilization, the resulting zygote will have the correct diploid number of chromosomes.
In cattle, as in many other organisms, there are two types of cells in terms of chromosome number: somatic cells and gametes (sex cells).
1. Somatic Cells: These are the cells that make up the body of the organism, such as skin cells, muscle cells, and nerve cells. In cattle, each somatic cell contains 60 chromosomes, which is the diploid number for this species. These chromosomes are organized into pairs, with one member of each pair coming from the mother and the other from the father.
2. Gametes (Sex Cells): These are the reproductive cells, specifically eggs in females and sperm in males. Unlike somatic cells, gametes are haploid, meaning they contain only one set of chromosomes. In cattle, this means that each gamete has 30 chromosomes. The process of meiosis is responsible for reducing the chromosome number by half.
- Meiosis: This is a specialized type of cell division that occurs only in the production of gametes. It involves two rounds of division:
1. In the first round, homologous chromosomes (one from each parent) pair up and exchange genetic material (crossing over), followed by the separation of these homologous pairs into two cells. This results in cells that are still diploid but have only one chromosome from each original pair.
2. In the second round, the sister chromatids (copies of each chromosome) are separated, resulting in four haploid cells, each with only one set of chromosomes.
3. Fertilization: When an egg and a sperm fuse, their haploid sets of chromosomes come together to form a diploid zygote with the full complement of 60 chromosomes. This restores the diploid number and ensures that the offspring receives genetic information from both parents.
In summary, cattle sex cells have only 30 chromosomes because they are the product of meiosis, which reduces the chromosome number by half to ensure that upon fertilization, the offspring will have the correct number of chromosomes characteristic of the species.
The size of a population refers to the _____
of individuals in the population.
Answer: cells
Explanation:
A diabetic, who does not utilize insulin properly, will metabolize fats instead of glucose. A condition called diabetic ketoacidosis is a common result of excessive fat metabolism, causing blood pH values of 7.1 or less (normal range is 7.35-7.45). What has happened to the blood pH and why?A) The pH is below normal because buffers can donate OH. B) The pH is above normal (basic) because the ketones are too basic, C) The pH is not affected because the blood buffers can absorb the excess H⁺. D) The pH is below normal (acidic) because the buffering capacity was exceeded.
Answer:The correct answer to the question is option D
THE PH IS BELOW NORMAL (ACIDIC) BECAUSE THE BUFFERING CAPACITY WAS EXCEEDED.
Explanation: When insulin is being utilized well by a diabetic,glucose is metabolized because the insulin administered helps the body cells to pick up glucose from the food we eat and convert it to energy for the body to work with and function well.But when insulin is not being utilized properly by a diabetic,fats are metabolized instead of glucose that is to say that,the cells in the body are not sensitive to the glucose supplied by the food we eat which makes the body to be hypoglycemic (low blood glucose level),the body inorder to raise the blood glucose level starts breaking down stored fats in the body at a rate that is higher than normal inorder to provide energy, the liver then processes the broken down fats into a fuel that is known as ketones, these ketones are released into the blood causing the blood to be acidic,the buffering property of blood on a normal note is suppose to resist the changes in the PH of the blood,but when the buffering capacity is exceeded,there won't be any resistance to the change in the blood PH which will inturn lower the blood PH level making it acidic.
This is exactly what happened to the diabetic being described in the question.
Which stimulus most likely caused the leaves on these trees to turn from green to yellow?
A. too much water
B. change in soil
C. change in seasons
D. too much sunlight
Answer:
The change in the season
Explanation:
Temperature, light, and water supply have an influence on the degree and the duration of fall colors. Low temperatures above freezing will favor anticyclonic formation producing bright reds in maples. However, early frost will weaken the brilliant red color. Rainy and/or overcast days tend to increase the intensity of fall colors.
In a chemical reaction, (blank)
are the substances present after the reaction.
Answer:
products
Explanation: Substances present BEFORE a reaction occurs are described as reactants. Substances present AFTER a reaction has occurred are described as products
Answer:
Products
Explanation:
In a chemical reaction,
Products
are the substances present after the reaction.
The term diploe refers to the: a. double-layered nature of the connective tissue covering the bone b. fact that most bones are formed of two types of bone tissue c. internal layer of spongy bone in flat bones d. two types of marrow found within most bones
Answer:The term diploe refers to the internal layer of spongy bone in flat bones.
Explanation:
name some short-term changes
Answer:
environmental : fog , flooding , blizzards, and avalanches
Explanation:
Number the steps from when a stimulus is received to when the body reacts.
The stimulus is received by sensory receptors.
Motor neurons cause muscles to contract so the body can react to the stimulus.
The brain processes the information through interneurons.
Interneurons transfer response information to motor neurons.
Sensory neurons carry stimulus information to the brain or spinal cord.
Answer:
15342
Explanation:
Got it right
When a stimulus is received, it is detected by sensory receptors, transmitted to the brain or spinal cord by sensory neurons, processed by interneurons, and then a response is carried out by motor neurons causing muscle contractions.
The process from when a stimulus is received to when the body reacts involves several steps that utilize different types of neurons such as sensory neurons, interneurons (relay neurons), and motor neurons.
The stimulus is received by sensory receptors, which detect external or internal changes.Sensory neurons carry stimulus information to the brain or spinal cord.Within the central nervous system, interneurons (relay neurons) process the information and are involved in decision-making.Interneurons transfer response information to motor neurons.Motor neurons cause muscles to contract so the body can react to the stimulus, completing the response.The entire process is often part of what is known as a reflex arc, which enables rapid and involuntary reactions to stimuli.
The independent variable in this experiment was___
, and the dependent variable was ___
Answer:
independent is molecule size and dependent is the ability to diffuse
Explanation:
Why are bacteria a necessary part of the nitrogen cycle
Answer:
Because nitrogen must be fixed in order to be used by living things, it rarely exists in its pure form. Bacteria are a very important part of the nitrogen cycle because it helps to change or fix nitrogen into a usable form. Interesting Nitrogen Cycle Facts: Plants absorb nitrogen directly from the soil.
Explanation:
Answer:
Bacteria are a necessary part of the nitrogen cycle because living things cannot use atmospheric nitrogen. The nitrogen cycle is the series of processes that lead to the interconversion of nitrogen and its compounds in the atmosphere. Bacteria are required in the nitrogen cycle because atmospheric nitrogen cannot directly use by the plant.
Hope this help!:)
Which statement about fluid pressure is true?
A. Areas of low pressure spin around regions of high pressure.
B. Areas of low pressure are warmer than areas of high pressure.
C. Fluids move from areas of low pressure to areas of high
pressure.
D. Fluids move from areas of high pressure to areas of low
pressure.
Answer:
it is b
Explanation:
Final answer:
Fluids move from areas of high pressure to areas of low pressure (Option D), which is a fundamental concept in fluid dynamics and impacts weather systems, gas behavior, and various scientific phenomena.
Explanation:
The correct statement about fluid pressure is that fluids move from areas of high pressure to areas of low pressure (option D). This principle is a fundamental aspect of fluid dynamics and is observed in various weather systems and the behavior of gases and liquids. For example, wind is an illustration of this principle as it generally blows from high-pressure zones, which are typically cooler, towards low-pressure zones, which are warmer due to the rising of less dense, heated air. Similarly, gas will move from an area of high pressure to an area of low pressure. This movement is driven by the desire to achieve equilibrium where the pressure differences are no longer present. Understanding this behavior is essential for comprehending weather patterns, ocean currents, and various engineering applications.
Which lists the correct order of the steps?
1 . water is broken down into oxygen and hydrogen .
2 . glucose is broken down to be used by plants
3. hydrogen combines with carbon dioxide to form glucose
4. hydrogen enters the plant as part of water
Mining has only short-term effects on the Earth. Please select the best answer from the choices provided T F
Answer:
False
Explanation:
The statement "Mining has only short-term effects on the Earth" is false.
What are the effects of c on earth?Depending on the type of mine and its location, mining has both immediate and long-term effects on the soil. There are some non-fuel materials that can be mined without causing environmental harm.
The consequences can include soil erosion, sinkholes, biodiversity loss, and contamination of surface, ground, and freshwater resources by chemicals released during mining operations.
But in order to get useful material out of metal minerals, chemical treatment is required. It is possible to manufacture toxins, and when these toxins seep into lakes and streams, they frequently destroy anything they come into contact with. The effects are permanent.
Therefore, the statement is false.
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A koala must eat 200 grams of leaves each day to survive. The trees in a area can provide 1380 g of leaves per day what is the maximum number of koalas that can survive in the area
Answer:
6 koalas
Explanation:
The maximum number of koalas that can survive in the area is 6.
Each koala must eat 200 grams of leaves per day.
The trees in an area can provide a total of 1380 g of leaves per day.
The maximum number of koalas that can survive in this area would be the total amount of leaves production per day divided by the amount of leaves required by each koala per day.
Hence:
Number of koala the area can support = 1380/200 = 6.9
Remember that each koala must eat 200 grams per day, therefore, the maximum number of koala that can survive in the area approximately 6.
Answer:
6
Explanation:
In prokaryotes new mutations accumulate quickly in populations, while in eukaryotes new mutations accumulate much more slowly.
The primary reasons for this are:_________.
A) Prokaryotes have short generation times and large population sizes.
B) Prokaryotes have random mutations while eukaryotes can target genes for mutations; thus mutations may not accumulate as quickly in eukaryotes but they are more useful to the organism.
C) The DNA in prokaryotes is not as stable as eukaryotic DNA and is thus more likely to mutate.
D) Prokaryote mutations are less effective than eukaryote mutations in providing variation for evolution.
Answer: Option A
Explanation:
In Prokaryotes the the rate of new mutations is much more as compared to the eukaryotes. The rate of accumulation of mutation is slow in case of eukaryote because their generation is long as compared to prokaryotes.
Prokaryotes have short generation time and large population size which enables them to accumulate the mutation quickly.
The machinery is also not that complex when it comes to prokaryotes. Transduction, conjugation and tranposable elements. So, the changes during these processes leads to mutation in the prokaryotes and can be observed quickly due to their small generation.
Fill in the sentences below, which explain how character displacement evolved in the finch populations on Santa María and San Cristóbal islands.Los Hermanos, directional, interspecific competition, reduces, shallower beaks, less, Daphne, deeper beaks.1. When the finches first colonized Santa Maria and San Cristobal, G. fuliginosa probably had beak sizes similar to finches on ______ island, and G. fortis probably had beak sizes similar to finches on ______ island.2. Significant overlap in beak size would have resulted in ______ for food.3. Natural selection favored phenotypes that competed ______ for food.4. In G. fortis, finches with ______ were selected for.5. In G. fuliginosa, finches with ______ were selected for.6. Each species experienced ______ selection, which resulted in character displacement for beak size.7. Character displacement is adaptive for both populations because it ______ interspecific competition.
Answer:
los hermanos
daphne
interspecific competition
less
deeper breaks
shallower breaks
directional
reduces