Answer:
determined
Explanation:
Determined cells are embryonic cells that will generate all the cell types of the adult organism, with this process being independent of environmental inputs. Cell determination is defined by specific gene expression patterns in embryonic cells. In consequence, cell determination is defined as a genetic process where a particular cell fate can be broken down into two different states: specified (committed) or determined. If a cell is in a committed/specified state, the cell's fate can still be reversed or transformed, while if a cell in a determined state, the cell's fate cannot be reversed or transformed.
Starting with the basic building blocks, which is the correct order of levels of organization of complex organisms?
A. organ systems --> cells --> tissues --> organs
B. cells --> tissues --> organs --> organ systems
C. tissues --> organs --> organ systems --> cells
D. organs --> organ systems --> cells --> tissues
Answer:
A
Explanation:
how do you think the system used to organized where people live is similar to how your body is organized?
The creation of different breeds of dog by humans is an example of...
A) stabilizing selection
B) disruptive selection
C) artificial selection
D) sexual selection
Answer:
I believe it is artificial selection
Explanation:
i learned about this a little while ago lol
The reaction shown below is known as what type of reaction?
Reactants → Products + Heat
А. activation
B. endothermic
c. enzymes
D. exothermic
What causes this change in fur color?
This part of the respiratory system prevents food from entering your trachea.
A. Mouth
B. Epiglottis
C. Bronchioles
D. Nose
Answer:
the answer is epiglottis in the respiratory system
Which two words are the closest antonyms?
Hint
А
Phenomenon and occurrence
B
Observe and determine
C
Sudden and gradual
D
Tremendous and powerful
Answer:
(B)
Explanation:
An 8 year old girl is brought to your office by her mother, who tells you that the girl has been complaining of a sore throat for 3 days. Thinking that the girl was developing a cold, she kept her daughter home from school with the hope that she would get better. She has become worse in the past day, however, developing a fever of 103 degrees F, a headache, and complaining of abdominal pain. As you examine her throat, you see that in addition to red and enlarged tonsils, that there are white patches on them, and that there are swollen lymph glands on both sides of her neck.
Answer:
she has Strep throat or something like that
Explanation:
the Severity of strep throat can vary from person-to-person. The common symptoms are as follows:
Sudden high fever
Mild soreness in throat
Redness in throat with white patches
Headache
Chills
Loss of appetite
Cervical lymphadenopathy (swollen lymph nodes in the neck)
Swollen tonsils
Difficulty in swallowing food or water
Pain when swallowing
Nausea and vomiting is seen in younger children
Answer: Acute otitis media.
Explanation: This question is based on the opening section of Pirozzo and Del Mar (2001). They specifically say that "Acute otitis media is a disease of infancy and early childhood defined by the presence of inflammation and fluid in the middle ear and accompanied by at least 1 sign of acute illness." You can find more information here: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1275975/
Explain how photosynthesis and cellular respiration work together.
Answer:
photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.
Veterinarians who specialize in birds are often referred to as herp veterinarians.
(True)
(False)
Answer:
false
Explanation:
quizlet said so
Answer:
FALSE
Explanation:
Which of these zones of the ocean is deepest?
A. Abyssopelagic
B. Epipelagic
C.Hadalpelagic
D. Bathypelagic
hadalpelagic is the zone of the ocean is deepest.
High tide is occurring on the sides of the Earth that are_______.
A. -experiencing sunrise and sunset.
B. -closest to and farthest from the Sun.
C. -halfway between the Sun and the Moon.
D. -closest to and farthest from the Moon.
High tide is occurring on the sides of the Earth that are closest to and farthest from the Moon. The correct option is D.
What is high tide?When the sea or a river reaches its greatest level and moves the farthest up the beach or the bank, it is said to be at high tide.
The gravitational forces that try to pull the water away from the moon are resisted by the water that is travelling away from the moon.
On the far side of the Earth, where the moon's gravitational pull is weaker, inertia triumphs, the ocean swells, and high tide happens.
The rise and fall of the sea's surface on a regular basis is what tides, which start in the oceans, appear as as they move toward the coastlines.
High tide is when the wave's highest portion, or crest, reaches a specific area; low tide is when the wave's lowest portion, or trough, happens.
Thus, the correct option is D.
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Suppose we stock a pond with 100 fish and note that the population doubles in the first year (with no harvesting), but after a number of years, the population stabilizes at what we think must be the carrying capacity of the pond: 2,000 fish. Growth seems to have followed a logistic curve. a. What population size should be maintained to achieve maximum yield, and what would be the maximum sustainable fish yield? b. If the population is maintained at 1,500 fish, what would be the sustainable yield?
Answer:
Explanation:
From the given information,
The first process is to determine the initial growth rate by using the formula:
[tex]R_o = \dfrac{In(2)}{t_d}[/tex]
where;
The initial growth rate(constant) = [tex]R_o[/tex] ; &
the doubling time = [tex]t_d[/tex] = 1 year
[tex]R_o = \dfrac{In(2)}{1 \ year}[/tex]
[tex]R_o[/tex] = 0.693 / year
Now, we move up to the net stage to find the growth constant by using the formula:
[tex]r = \dfrac{R_o}{(1 - \dfrac{N_o}{K})}[/tex]
where;
[tex]N_o[/tex] = population of fish in the pond = 100
[tex]R_o[/tex] = The initial growth rate(constant) = 0.693 /year
K = carrying capacity = 2000
Then;
[tex]r = \dfrac{0.693 \ /year }{(1 - \dfrac{100}{2000})}[/tex]
[tex]r = \dfrac{0.693 \ /year }{(1 - 0.05)}[/tex]
[tex]r = \dfrac{0.693 \ /year }{(0.95)}[/tex]
r = 0.730 / year
a)
Now, the maximum yield can be evaluated by using the expression:
[tex]= \dfrac{rk}{4}[/tex]
[tex]= \dfrac{0.730 \times 2000}{4}[/tex]
= 365 fish per year
Also, the maximum sustainable yield is said to be half of the carrying capacity suppose that the population growth obeys logistic curve;
i.e.
[tex]N' = \dfrac{1}{2} \times 2000[/tex]
N' = 1000 fish
b)
If the population is maintained at 1500 fish;
The sustainable yield can be calculated by using the formula:
The Sustainable yield = [tex]r\times N (1 - \dfrac{N}{K})[/tex]
The Sustainable yield = [tex](0.730/ year ) (1500) (1 - \dfrac{1500}{2000})[/tex]
The Sustainable yield = 1095 × 0.25
The Sustainable yield = 273.75 fish per year
The Sustainable yield ≅ 274 fish per year
Population size should be maintained to achieve maximum yield and Sustainable yield if population is maintained at 1,500 fish are 364.7 , 273.525 fish per year
Sustainable yield:Given that;
Stock in start = 100 fish
Double in 1 year
Capacity of pond = 2000 fish
Find:
Population size should be maintained to achieve maximum yield
Sustainable yield if population is maintained at 1,500 fish
Computation:
Growth rate = ln₂ / 1
Growth rate = 0.693 per year
With no growth constraint r = [tex]\frac{0.693}{1-\frac{100}{2000} }[/tex]
With no growth constraint r = 0.7294 per year
A. Population size should be maintained to achieve maximum yield = [tex]\frac{0.7294 \times 2000}{4}[/tex]
Population size should be maintained to achieve maximum yield = 364.7 fish per year
B. Sustainable yield if population is maintained at 1,500 fish = [tex][(0.7294))(1500)][1-\frac{1500}{2000} ][/tex]
Sustainable yield if population is maintained at 1,500 fish = 273.525 fish per year
Find out more information about 'Sustainable yield'
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The largest mass extinction was in the
a. Precambrian time.
b. Cenozoic era.
C. Paleozoic era.
d. Mesozoic era.
Answer:
♡ hi fairy ♡
- Mesozoic, I just learned about this! it's so sad but it did help our society.
have a great day! hope i could help.
~madeline
✧･ﾟ: *✧･ﾟ:･ﾟ✧*:･ﾟ✧･ﾟ: *✧･ﾟ:･ﾟ✧*:･ﾟ✧
Explanation:
The largest mass extinction was in the: C. Paleozoic era.
The Paleozoic era is simply referred to as the earliest time of the three (3) geologic eras during the Phanerozoic era.
Generally, there are six (6) geologic periods in the Paleozoic era and they are listed from the youngest to oldest as;
The Permian.The Carboniferous.The Devonian.The Silurian.The Ordovician.The Cambrian.Some of the activities that took place between the start and end of the Paleozoic era time scale include;
I. In the early period of the Paleozoic era (The Cambrian), there were marine living organisms called phyla.
II. During the Paleozoic era, volcanic activities were experienced.
III. The Paleozoic era was prone to erosion and deposition of marine fossils.
IV. Lastly, the Paleozoic era was characterized by the largest mass extinction.
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PLEASE HELP ME WITH THIS QUESTION
HELP! time crunch!
"Describe the flow of blood through the human heart starting in the left atrium and ending in the left atrium."
in two or three sentences please...Thanks in advance!
Willing to give 40 points!
Answer:
Explanation:
The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle through the mitral valve. The left ventricle pumps the oxygen-rich blood through the aortic valve out to the rest of the body. pl give brainly
please help me with this question:)
Answer:
Pokaryote is the right answer.
Answer:
C: Prokaryote
Explanation:
This is not an animal or plant cell
what is the difference between the spermatozoon and spermatogonium?
Answer:
Sperms are the male gametes produced in the seminiferous tubules of the testes. The main difference between spermatogenesis and spermiogenesis is that spermatogenesis is the formation of sperm cells whereas spermiogenesis is the maturation of the spermatids into sperm cells.
Pls give Brainliest!!
If a mutation occurred resulting in a single nucleotide addition to the below DNA sequence, what do you suspect would happen?
Which is greater 1,000 ml or 1,000 cm?
Answer:
Neither, they are equal.
1,000 cm3 = 1000 mL
If a cell in G1 has 20 chromosomes, then at the end of meiosis I there will be _________ chromosomes in each daughter cell, and __________ sister chromatids in each daughter cell.
Answer:
10 chromosomes
20 chromatids
Explanation:
Meiosis is the process by which sexually reproducing organisms produce gametes for sexual reproduction. Meiosis, which reduces the chromosomal number of the parent cell by half, occurs in two stages namely: meiosis I and meiosis II.
Meiosis I is where the actual reduction in chromosomal number takes place because homologous chromosomes are separated in this stage. For example, a cell in G1 that has 20 chromosomes will have 10 chromosomes in each daughter cell at the end of meiosis I.
Since, DNA replication occurs in the S-phase, sister chromatids are formed for each chromosome. Hence, there would be 20 sister chromatids joined together by a centromere at the end of meiosis I.
Which phrase best defines homeostasis
Answer:
maintaning the essential internal parameters relatively constant is the phrase that best describes the process of homeostasis.
i need help on this please ASAP
Answer:
What's the question? Its not written here
Answer:
Where is the question?
Explanation:
name one human hormone that is produced by genetically modified bacteria
Answer:
Insulin
Explanation:
I knew the answer, but I'm not really good at explaining these so I got a little help from google. -------- Bacterial cells can be genetically modified so that they have the gene for producing human insulin. As these modified bacteria grow, they produce human insulin.
_ can cause drain pipes to become to become clogged. A. Hydrotropism B. Thigmotropism
Answer:
b
Explanation:
Answer:
I think B
Explanation:
Hope this helps
What was the result of using drainage blocks to keep water in the field level during the growing season?
Answer:
This question is incomplete
Explanation:
This question is incomplete. However, it should be noted that the idea of blocking the drainage, which could cause waterlogging (since the water will not be able to leave the field), is a type of irrigation that ensures there is sufficient amount of water for the plants to grow during a growing season. Although, some plants do not grow well in environments like this (in the case of waterlogging) because this environment lowers oxygen level in the root o the plant (caused by the water at the top of the soil).
How many hydrogen atoms are present in each water molecule?
A.
1
B.
3
C.
2
D.
4
Answer:
C. 2
Explanation:
A repressor prevents
a. translation from occurring.
b. ribosomes from binding to mRNA
c. transcription factors from binding to DNA
Which of the following is most likely to be an energy source for the cells of a living thing?
А. DNA
B. enzymes
С. disaccharide
D. amino acids
The most likely to be an energy source for the cells of a living thing is a disaccharide (Option C).
A disaccharide is a carbohydrate composed of two monosaccharide units.
Cellular respiration refers to a series of metabolic reactions by which cells produce ATP, the energy coin of the cell.
Monosaccharides (e.g., glucose) represent the main source of energy used by cells during cellular respiration.
In conclusion, the most likely to be an energy source for the cells of a living thing is a disaccharide (Option C).
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Which process creates two daughter cells with identical genetic material?
A. interphase
B. intercellular communication
C. mitosis
D. meiosis
Answer:
c
Explanation:
who cares