Answer:
True
Explanation:
Consider the steady ultafiltration of a solute from the capillary across the glomerular endothelial cells into the urinary filtrate in the kidneys. Model the endothelial cells as an infinite membrane of thickness tEC. Assume a well-mixed capillary with concentration CC and a well-mixed filtrate at CF. With a diffusion constant of DEC in the endothelial cell compartment, what is concentration profile across the endothelial cells
Answer:
DEC = CC + CF
Explanation:
It should be understood that, the concentration profile across the endothelial cells will base on the diffusion rate of the filtrate .
The surface of the villi in the small intestine is covered by a single layer of epithelial cells called enterocytes. Enterocytes absorb nutrients from the intestinal lumen as they move up the side of the villus. The enterocytes are shed from the end of the villus through apoptosis after 3 to 4 days. Consequently, new cells must be continuously supplied from the crypt and move up the villus. When a stem cell in the crypt divides, what are its immediate daughter cells
Answer:
either a stem cell or a specialized cell, such as an enterocyte
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Which feature contains genetic material and is present in a eukaryotic cell but not in a prokaryotic cell?
Which two features are present in a plant cell but not in an animal cell? ************someone HELP PLEASE***********
Answer:
A DNA is contained in the NUCLEUS of a eukaryotic cell not a prokaryotic cell. Your awnser is " nucleus"
Explanation:
The feature that contains genetic material and is present in a eukaryotic cell but not in a prokaryotic cell is the nucleus. The two features that are present in a plant cell but not in an animal cell are the cell wall and chloroplasts.
1. Eukaryotic cells have a membrane-bound organelle called the nucleus that contains the DNA of the cell. It is in charge of conserving and safeguarding the genetic material, including the chromosomes that contain the genes that govern the properties and operations of the cell.
On the other hand, prokaryotic cells are devoid of a genuine nucleus. The cytoplasm of these cells contains their genetic material, which is normally one circular DNA molecule.
2. Cell Wall: The cell membrane of plant cells is enclosed by a strong cell wall. The plant cell is protected and supported structurally by the cell wall. Together with other polysaccharides, proteins, and cellulose, a complex carbohydrate, it essentially consists of these elements. Animal cells lack a cell wall and are supported instead by extracellular matrix and other structural elements.
Chloroplasts: The chloroplasts found in plant cells are in charge of photosynthesis. Specialized organelles called chloroplasts house the pigment chlorophyll as well as other pigments that are used to absorb light energy.
They do this by converting light energy into chemical energy, releasing oxygen as a byproduct and creating glucose. As animal cells lack chloroplasts, they are unable to perform photosynthesis.
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as a human population grows, what happens to our natural- resources requirement
Answer:
Need for natural resources increase
Explanation:
Select the statements that accurately describe endocytosis.
a. The cell forms proteins that move substances into the cell against a concentration gradient.
b. The cell selectively filters small nutrients through specialized membrane pores.
c. The cell membrane pinches off to form an extracellular vesicle joined to the cell by filaments.
d. The cell membrane engulfs a particle in the cytoplasm and forms a vesicle around it.
e. The cell expends energy to transport materials into the cytosol.
Answer:
The correct answer is:
The cell membrane engulfs a particle in the cytoplasm and forms a vesicle around it. (d.)
Explanation:
Endocytosis is a type of active transport, where particles such as (large molecules, parts of cells, and even whole cells) are moved into cells.
The various types of endocytosis has a common feature of:
1. invagination of plasma membrane forming pockets around the target particle.
2. the pocket pinches off from original plasma membrane
3. forming a new intracellular vesicle containing the target particle.
The different types of endocytosis includes
a. pinocytosis (cell drinking): takes in extracellular fluids
b. phagocytosis (cell eating): large solid particles are taken in by cells
c. receptor-mediated endocytosis: here, receptor proteins on the cells surface, binds to complementary proteins on the surface of the target particles before endocytosis occurs.
Darwin would probably say that Rudolph the Red Nosed Reindeer was the first reindeer to have a red
nose as a result of:
Answer:
genetic mutation
Explanation:
the first of any trait is due to some form of mutation, whether it may be in the DNA or chromosomes as a whole.
The process through which humans breed other animals and plants for particular traits:
A) artificial selection
B) genetic engineering
C) genes
D) selective breeding
E) traits
Answer:
A) artificial selection
As a conservationist, what are your top three concerns regarding the hydroelectric dam and the biodiversity of the region?
Answer:
I’m concerned about how the dam will affect the water flow in the river, which can affect the behaviors of fish. I’m also concerned that some fish and aquatic animals might get sucked into the dam. Finally, I worry that the dam could malfunction and cause flooding, which could damage the ecosystem.
Explanation:
Top three concerns regarding the hydroelectric dam and the biodiversity of the region
Hydropower can also cause environmental and social problems. Reservoirs drastically change the landscape and rivers they are built on. Dams and reservoirs can reduce river flows, raise water temperature, degrade water quality and cause sediment to build up. This has negative impacts on fish, birds and other wildlife.
How do hydroelectric power plants affect the environment?Hydroelectric plants alter the natural habitats of freshwater species in the areas they are located. It changes the concentration of nutrients, water temperature, and the river's flow. Downstream river flow suffers a loss of water and silt loads, reducing water quality.
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DPIP was used in the photosynthesis lab to measure the
-Light dependent reactions
-Production of O2
-Light Independent reaction (a.k.a. Calvin cycle)
-Production of CO2
Answer:
Light dependent reactions
Explanation:
DPIP stands for Dichlorophenolindophenol. It is a chemical compound that is used as a redox dye.
DCPIP is blue when it is oxidized DCPIP is colorless when it is reduced.
DCPIP measures the rate of photosynthesis. The redox dye is decolorized by chemical reduction when it is exposed to light in the process of photosynthesis.
DPIP was used in the photosynthesis lab to measure the light dependent reactions.
What type of acid is currently of principal concern when dealing with acid rain?
Answer: Sulfur dioxide (SO2) and nitrogen oxides (NOx) released into the air by fossil-fuel power plants, vehicles and oil refineries are the biggest cause of acid rain today, according to the EPA. Two thirds of sulfur dioxide and one fourth of nitrogen oxide found in the atmosphere come from electric power generators
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A DNA molecule is made up of building blocks known as nucleotides. Each nucleotide consists of deoxyribose, a phosphate group, and one of the chemical bases. The nucleotides join together to form a
, which form the backbone of a DNA strand.
Answer:
polynucleotide
Explanation:
according to edmentum notes, "The nucleotides join together to form a polynucleotide. Polynucleotides form the backbone of a DNA strand.'
Nucleotides are the building units of the DNA or RNA molecule. DNA is composed of deoxyribose, a phosphate group, and one of the chemical bases that make up each nucleotide.
What is a nucleotide?It is a monomer of DNA or RNA. It is composed of a sugar (deoxyribose in DNA ribose in RNA), a phosphate group, and one of the chemical bases that make up each nucleotide.
The backbone of DNA is formed by which components?It is formed of sugar and phosphate only.
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What happens during interphase that allows the two resulting cells to be the same as the
original cell?
Answer:
During mitosis, a eukaryotic cell undergoes a carefully coordinated nuclear division that results in the formation of two genetically identical daughter cells. ... Then, at a critical point during interphase (called the S phase), the cell duplicates its chromosomes and ensures its systems are ready for cell division.
Jaden’s mass is 50 kilograms. His weight on Earth is
Answer:
Weight of the Jaden on earth is 490 N.
Explanation:
Formula
w = mg
Where w is the weight of an object , m is the mass of an object and g is acceleration of gravity .
Gravity on Earth is 9.8 m/s² .
Jaden’s mass is 50 kilograms.
g = 9.8 m /s²
m = 50
Put the values in the formula
Thus
w = 50 × 9.8
= 490 kg m /s²
(As N = kg m/ s²)
= 490 N
Therefore the weight of the Jaden on earth is 490 N.
In Guinea pigs, short hair (S) is dominant over long hair (s), and black coat color (B) is dominant over
albino (b). Both genes assort independently. A female of a true breeding line with a black coat and long
hair is mated with a short haired albino male (also from a true breeding line). (a) What are the
phenotypes of the F1 generation? Explain. (b) If F1 is mated, which percentage of the offspring will be
homozygous for both characters? Give all genotypes and phenotypes of these homozygotes.
Answer:
Explanation:
Short hair (S) is dominant over long hair (s), and black coat color (B) is dominant over albino (b).
A female of a true breeding line with a black coat and long hair is mated with a short haired albino male (also from a true breeding line)
parents genotype BBss x SSbb
gametes Bs x Sb
F1 generation geenotype BbSs
Phenotype- They are all with black coat and short hair
Mating of F1 BbSs x BbSs
Percentage of offspring homozygous for both characters:
Bb x Bb Ss x Ss
BB Bb Bb bb SS Ss Ss ss
1/4 1/4 1/4 1/4
1/4*1/4 = 1/16 = 0.0625 = 6% for each homozygous characters (BBSS-6% and bbss-6%)
The genotypes of the homozygotes are BBSS and bbss
The phenotype of BBSS is black coat with long hair
The phenotype of bbss is an albino with short hair
At what ages are teeth the most accurate indicators of age of an unknown skelton? Justify your answer with an explanation.
(Forensics)
Answer:
The tibia completes growth at about age 16 or 17 in girls, and 18 or 19 in boys. For toddlers to teenagers up to age 21, teeth are the most accurate age indicators
Explanation:
Fertilizer runoff causes an increase in the dissolved nutrients of the ecosystem shown in the food web below. This causes the number of phytoplankton to double.
How will this most likely affect the other species in this ecosystem?
A.
The shrimp population will increase which will cause an increase in the squid population.
B.
The shrimp population will decrease which will cause an increase in the squid population.
C.
The shrimp population will decrease which will cause an increase in the sperm whale population.
D.
The shrimp population will increase which will cause a decrease in the sperm whale population.
Answer:
I believe the answer is A because if shrimp eat phytoplankton, and squid eat shrimp this should work. I am not positive but I hope this helps.
Unscramble the word - oicnoecm mptcia earth science please
Answer:
The answer is Economic impact.
Which of these is found within all cells?
Organ systems
Organs
Tissues
Molecules
Answer:
tissues
Explanation:
cells make tissues and tissues make organs
Which is a possible path of the movements of nitrogen in the nitrogen cycle?
(A) soil - airplants air animals - soil
B) soil animals plants
soil
animals soul plants - air
(D) air - soil plants animals soil - air
Answer:
B) soil animals plants
soil
Explanation:
Nitrogen is taken up by plant roots and combined into organic substances in the plant, such as enzymes, proteins and chlorophyll. ... Plant and animal wastes decompose, adding nitrogen to the soil. Bacteria in the soil convert those forms of nitrogen into forms plants can use. Plants use the nitrogen in the soil to grow.
1. Which plant traps bugs in its stem and forces them to walk forward?
Explanation:
The active trap in the Venus Flytrap ( dionaea muscipula )
Plant species A cannot fight most fungal infections, while plant species B makes a protein that kills many fungi.
What is one possible way for humans to engineer species A plants that can produce the fungus-killing protein?
Answer:They can insert the gene for the protein from species B into a chromosome in species A.
Explanation:
The one possible way for human to engineer species should be that it should insert the gene for the protein.
What is fungal infections?It is known as the mycosis that represent the disease on the skin that should be caused by the fungus. There are various kind of species of fungi. It should be lived on dirt, on plants, or the surface on the household and even on the skin. It would leads into the rashes or bumps in the skin problem
Therefore, The one possible way for human to engineer species should be that it should insert the gene for the protein.
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Which of the following relationships may present harm to one of the organisms involved?
I. Commensalism
II. Parasitism
III. Predation
IV. Mutualism
(A) I and II only
(B) I and IV only
(C) II and III only
(D) III and IV only
Answer:
C
Explanation:
Predator-Prey relationship
how does blood volume affect blood pressure
Answer:
Changes in blood volume affect arterial pressure by changing cardiac output. An increase in blood volume increases central venous pressure. This increases right atrial pressure, right ventricular end-diastolic pressure and volume.
Explanation:
Most eubacteria are ____________________ because most rely on nutrition from other organisms.
Answer:
heterotrophic(Heterotrophic Eubacteria are among the most abundant and diverse bacteria on Earth,)
Explanation:
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Which characteristics do temperate Marine and temperate Continental climates have in common
Options are not provided in the question. The complete question is:
Which characteristics do temperate marine and temperate continental climates have in common? Check all that apply.
A.mild winters
B. hot summers
C. many tall trees
D. moderate amount of precipitation
E. two seasons with temperature differences
Answer:
D. moderate amount of precipitation
E. two seasons with temperature differences
Explanation:
The temperate marine climate is generally the climate of west coasts in higher middle latitudes of continents.
Temperate continental climates also known as microthermal climates are located away from the oceans.
Though the location of both the climates is different but some of the characteristics are similar that include are modertae amount of precipitation and two seasons with temperature differences.
Both the climates have moderate rainfall across the year ( modertae amount of precipitation) and mild to warm summers and cool to cold winters.
Hence, the correct option is D and E.
Answer:
Answer is D on egde!!
Explanation:
You prepare an agar plate by spread plating & place an antibiotic disk in the middle of the plate. After incubating for a day at 37 degrees C, there are no bacteria on the plate. Which of the following is NOT a reasonable interpretation of what might have happened?
O The bacteria in the culture tube were already dead when you made the plate
O The medium used was defective and provided no nutrition for the bacteria
O The bacteria grew all over the plate but were then killed by the antibiotic
O The spreading tool was too hot when spreading the bacteria
Answer:
A.The bacteria in the culture tube were already dead when you made the plate
Explanation:
Antibiotics are the chemical substance used to kill or stop the growth of bacteria and some other microorganism.
Antibiotics are added to agar plate during experiment for the selection of only those bacteria with resistance to that antibiotic.
There can be several interpretation for the absence of bacteria such as:
The bacteria grows on the nutrients in the medium but due to defective medium they were unable to grow and die.It may also happen bacteria might have grown in all over the plate but due to the action of antibiotic, all the bacteria got killed.Tool used for spreading might kill bacteria as it was hot and bacteria may not be able to tolerate the excessive heat and die.Hence, the only not reasonable interpretation is bacteria in the culture tube were already dead when you made the plate.
So, the correct option is A.
If all of the red squirrels were diseased and died off what would happen to this food web?
Check all the boxes where the vocabulary word correctly matches its
science definition?
Equilibrium: a system where forces are in balance
O
Climax community: the end of a succession resulting in a stabilized community
o
Succession: the act of winning in life
Primary Succession: colonization of an area that has not been previously occupied by
a community, e.g. newly exposed rock
Pioneer Species: the first organisms to live on rocky surfaces, e.g. lichens, moss,
algae, and fungi
Secondary Succession: colonization following a major disturbance, such as a fire or a
flood
Answer:
Climax community, primary succession, pioneer species, secondary succession.
Explanation:
Equilibrium with regards to succession occurs as "a state of dynamic equilibrium in a community of organisms in which genetic, species and ecosystem diversity remain relatively stable, but this factors are subject to gradual changes through natural succession."
Succession: the process by which the structure of a biological community evolves over time.
Learning the rights, obligations, and expectations of a role to prepare for assuming that role in the future. ???
Answer:
Explanation: Anticipatory socialization involves learning the rights, obligations, and expectations of a role to prepare for assuming that particular role in the future
The process of learning the rights, obligations, and expectations of a role to prepare for assuming that role in the future is known as anticipatory socialization.
What is socialization?The term socialization refers to the rigorous process of acquiring the behavior pattern that enables a person to perfectly fit into the society of which he/she is an integral part of.
The term anticipatory socialization refers to the learning of the rights, obligations, and expectations of a role to prepare for assuming that role in the future.
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Why do fungi need to live in moist areas
Answer:
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Fungi help catabolism of complex organic matter into simple available inorganic forms. In other words they breakdown organic matter to obtain energy. This process of decomposition requires aerobic ambient and moisture therefore they are mostly found in moist habitats rich in detritus.
Explanation:
