what does Ecosystem mean ?
Answer:
ecosystem: all the living and nonliving things interacting in a particular area
Explanation:
True
After the second melotic division, the cells are haploid as they have only one of each homologous
chromosome pair.
Answer:
True
Explanation:
After the second melotic division, the cells are haploid as they have only one of each homologous
chromosome pair.
The diagram above depicts a karyotype of an individual human. Which of the following statements concerning the karyotype in the diagram is true? Select all that apply.
The diagram indicates an individual with an extra sex chromosome
The diagram illustrates a genetic condition found in females.
The diagram illustrates the results of nondisjunction during gamete formation.
The diagram indicates a mechanism for increasing genetic diversity in subsequent generations.
Answer:the diagram illustrates the results of non disjunction during gamete formation.
Explanation:
The following statements concerning the karyotype in the diagram is true - The diagram illustrates the results of nondisjunction during gamete formation.
Karyotype
Karyotype refers to the number and appearance of chromosomes present within the nucleus of a eukaryotic cell. It is illustrated as a diagram such as given in the question.
There is no Down's syndrome as the karyotype demonstrates a normal pair of chromosome 21. In this karyotype, there is an extra X-chromosome that depicts non-disjunction during either oogenesis or spermatogenesis (gamete formation) in the parents leading to the 23rd trisomy.
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All animals are ____ eukaryotes and are _____
Answer:
All animals are multicellular, heterotrophic eukaryotes.
Explanation:
3: What do the cells do with the molecules?
Complex organic food molecules such as sugars fats and proteins are rich sources of energy for cells because much of the energy used to form these molecules is literally stored within the chemical bonds that hold them together
Describe the differences and similarities between lecithin and cephalin. Match the words in the left column to the appropriate blanks in the sentences on the right. ResetHelp Lecithins and cephalins are both sphingolipids; they consist of glycerol with fatty acids forming bonds with the first and second groups. The third group of the forms a with phosphoric acid, which forms another bond with an amino alcohol. In lecithins, the amino alcohol is ; in cephalins, the amino alcohol is usually .
Answer:
Here, we have a composition passage and we are required to fill in the with missing words. The missing words are highlighted in bold format and underlined.
Lecithins and cephalins are both glycerophospholipids; they consist of glycerol with fatty acids forming ester bonds with the first and second hydroxyl groups. The third hydroxyl group of the glycerol forms a phosphate bond with phosphoric acid, which forms another phosphate bond with an amino alcohol. In lecithins, the amino alcohol is choline; in cephalins, the amino alcohol is usually ethanolamine.
Explanation:
Lecithin is a chemical complex composed primarily of fatty acids, glycerol, phosphoric acid, and choline. It can be present in egg yolks, soybeans, sunflower seeds, and plant seed cells and is completely normal. Soybean and sunflower lecithins contain much more important fatty acids than rapeseed lecithin, making them nutritionally more useful.
Phosphatidylethanolamine, also known as cephalin, is a phosphoglyceride that, like phosphatidylcholines and lecithins, is a component of biological membranes. A glycerol residue esterified by two fatty acids and a phosphoethanolamine residue gives rise to phosphatidylethanolamines. They're made by combining CDP-ethanolamine with diglycerides and releasing a CMP molecule. Phosphatidylcholines are formed when S-adenosylmethionine methylates the amine in ethanolamines. They're mostly found in the inner layer of plasma membranes' lipid bilayers.
1 pts
Question 9
Which of these is an example of biomass energy?
O A coal-burning generator.
O A gasoline-burning automobile.
O A wood-burning stove.
O An automobile that operates on fuel cells.
2. Using the principles of
dominance and segregation to
analyze the diagram, what alleles
would you expect in the F1
plants?
A. Purple: FF /White:
ff
B. Purple: Ff/ White: ff
C. Purple: ff / White:
FF
D. Purple: ff / White: Ff
Chael Are
Answer:
A. Purple: FF /White: ff
Explanation:
I did it too lol
Purple: FF /White: ff the principles of dominance and segregation to analyze the diagram, alleles would you expect in the F1 plants. Thus, option (a) is correct.
What is segregation?The Segregation Principle defines how pairs of gene variations are divided into reproductive cells. Gregor Mendel discovered the segregation of gene variants, known as alleles, and their accompanying qualities in 1865. During meiosis, allele pairs (different features of the same gene) are separated so that they can pass to distinct gametes.
The diagram was analyzed using the principles of supremacy and segregation. The principle of the impact in segregation was described as Purple: FF / White: ff. This inheritance pattern is known as partial dominance, which means that neither allele is completely dominant over the other: both genotypes can be seen at the same time.
As a result, the Purple: FF /White: ff the principles of dominance and segregation.
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Please Help Me i need a good grade!
FAST!!!!!!
Answer:
it's the second one/B because it's the only one that is correct :)
. Which of these is the most powerful force of weathering and erosion? *
1 point
wind
moving water
ice
gravity
PLESE SOMEONE HELP ME !!
PLEASE HELP WILL GIVE BRAINLIEST
In what order do species appear during primary and
secondary succession?
Answer:
here you go :)Explanation:
Primary succession is one of two types of biological and ecological succession of plant life, occurring in an environment in which new substrate devoid of vegetation and other organisms usually lacking soil, such as a lava flow or area left from retreated glacier, is deposited. In other words, it is the gradual growth of an ecosystem over a longer period of time.
In the primary succession, species like algae, fungi, and lichens are preset. In the secondary succession, the pioneer species present, that already existed in the environment.
What are primary and secondary succession?One of two types of biological and ecological succession of plant life. They are primary succession that takes place in environments where fresh substrate is deposited that is devoid of plants and other species that typically lack soil, such as lava flows or areas left behind from glaciers that have receded.
In other words, it is the steady development of an ecosystem through time.
Thus, Algae, fungus, and lichen species are established during the primary succession. The pioneer species that were previously existing in the habitat are found in the secondary succession.
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How many tropic levels are there in the following food chain?
algae —> mosquito larvae —> dragonfly larvae —> trout
Answer:
There are 4 trophic levels in the following food chain.
The diagram below represents a food pyramid in an ecosystem.
Hawk
Snake
Rabbit
Grass
The best explanation for the decrease in the amount of energy transferred to each
succeeding level is that much of the energy is
Оа
Ob
Ос
stored within organic materials
used in photosynthesis
released as heat and used in daily metabolism
consumed by producers
Od
Which process involves wind moving loose sediment?
abrasion
deflation
impact
plucking
B- Deflation
Answer:
Deflation
Explanation:
Edge 2021
Which statement is true about all adaptations? O A. They can be lost.
O B. They enhance survival.
O c. They reduce reproduction.
O D. They are learned.
Answer:
B. They enhance survival
In the image below, in which location is carbon released into the atmosphere?
A
B
C
D
Answer: D
Explanation: carbon is coming out of the buildings
Answer:
D like the answer above
Explanation:
Took the test and got it right
Question 5 (5 points)
Plants and animals are both in the domain Eukarya - how are they similar?
| a)
Both have prokaryotic cells
| b)
Both are autotrophs
10
Both are heterotrophs
d)
Both have eukaryotic cells
А
B
0а
Oь
Ос
Od
C
D
Answer:
D) both have eukaryotic cells
Explanation:
Animals and plants are classified as Eukarya because they are eukaryotic meaning they have a nucleus. However, this doesn't mean that they get food the same way
AG CLASS HELP!!!!!!
Disney World employees 750 horticulturists and 30 nursery professionals to keep the parks 4,000 acres meticulously groomed.
True
False
Answer: True
Explanation:
U can add 750 to 30 and see how much u get and add that number to 4,000 and see how many acres meticulously were groomed.
10. What causes root pressure, and what is the function of root pressure for the plant?
Answer:
Root pressure, in plants, a force that helps to drive fluids upward from the soil into the water-conducting xylem vessels. It is primarily generated by osmotic pressure in the cells of the roots and is partially responsible for the rise of water in plants.
Explanation:
Which step occurs in meiosis to prepare for fertilization in sexually
reproducing organisms?
Answer: 12 sexual reproduction and meiosis concept outline
Explanation: The process of meiosis produces unique reproductive cells called gametes, which have half the number of chromosomes as the parent cell. Fertilization, the fusion of haploid gametes from two individuals, restores the diploid condition. Thus, sexually-reproducing organisms alternate between haploid and diploid stages.
Hope this helps :D
The primary source of the specificity of enzymes is ________. The primary source of the specificity of enzymes is ________. their polarity, which matches that of their specific substrate their shape, which relates to the lock-and-key model their bonded transition metal, which is specific to the target substrate their delocalized electron cloud their locations within the cell
Answer:
their shape, which relates to the lock-and-key model
Explanation:
Enzymes are biological catalysts that are proteinous in nature. Their proteinous nature implies that they are made of amino acids, which forms a three-dimensional shape that accounts for their functionality and specificity. This means that enzymes are substrate-specific because of their 3D shape.
The three-dimensional shape of an enzyme determines the kind of substrate it will bind to. Enzymes, generally, catalyze reactions by binding to a substrate at their active site. This binding follows a lock and key pattern or model. In a nutshell, the primary source of specificity of enzymes is attributed to their SHAPE, which relates to the lock-and-key model.
WHICH TERM BEST SUMMARIZES PROCESS OF SELF FEEDING
Answer:
Photosynthesis!!!!!!!!
Explanation:
I just had this question on my A.P.E.X test
In what stimulation do we feel pain when removing the ventral root?
Answer:
Dorsal Root Ganglion
Explanation:
(im not 100% sure though)
How are giraffes able to feed on an acacia tree despite the tree's long thorns?
A. Giraffes don't eat acacia trees.
B. Giraffes have a long neck that they can maneuver between the thorns.
C. Giraffes have a long, mobile tongue that can maneuver between the thorns.
D.Giraffes produce saliva that dissolves the thorns.
Answer:
C. Giraffes have a long, mobile tounge that can maneuver between the thorns.
Explanation:
I took the test :D
Night blindness (n) is a sex-linked recessive trait. A woman who is night blind marries a man who is not night blind. What are the genotypes of both individuals?
Answer:
Genotype of night blind woman - XnXn
Genotype of normal man - XY
Explanation:
Given
Night blindness (n) is a sex-linked recessive trait. Let us say it is X linked recessive
In this case a man with XY genotype having a diseased X allele will be night blind while a woman will have night blindness if both the X allele are diseased . In case if only one X allele is diseased in women then, she will be a carrier of night blindness defect
Genotype of night blind woman - XnXn
Genotype of normal man - XY
5-10 statistics or interesting facts about kingdom Protista
What grade are you in?
How can the application of insecticides and herbicides affect an individual’s health? a. Insecticides and herbicides can potentially contaminate foods. b. Insecticides and herbicides increase the disease rate of agricultural plants. c. The application of herbicides and pesticides reduces the vitamin content of crops. d. Herbicides and insecticides increase the health value of crops by adding necessary nutrients.
Answer: A. Insecticides and herbicides can potentially contaminate foods.
Answer:
the answer is A
Explanation:
edge 2021
What are the 6 regions of the
human body from which hair can
be derived?
Answer:
Hair is made of a tough protein called keratin. A hair follicle anchors each hair into the skin. The hair bulb forms the base of the hair follicle. ... Blood vessels nourish the cells in the hair bulb, and deliver hormones that modify hair growth and structure at different times of life, if that answers your question.
Explanation:
The six (6) regions of the human body from which hair can be derived are:
1. Head.
2. Eyebrow.
3. Beard.
4. Pubic area.
5. Body.
6. Armpit (underarm).
Hair can be defined as a threadlike, keratinous filament that typically grows out of the epidermis. Also, an epidermis is the outer layer of the skin.
Basically, the hair comprises two main parts and these are:
The follicle.The hair shaft.Some of the macroscopic and microscopic properties of hair include:
Hair length.Hair color.Pigmentation of the cortex.Types of scales on the cuticle.Hair curliness.Pattern of the medulla.Generally, hair can be found or grow in different regions of the human body and these include the following:
1. Head.
2. Eyebrow.
3. Beard.
4. Pubic area.
5. Body.
6. Armpit (underarm).
7. Eye lash.
8. Nose.
9. Finger.
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A scientist injects a drug called rifampicin, which inhibits RNA synthesis, into a bacterium. What is the most likely direct result of this alteration?
The bacterial DNA will stop replicating.
The bacterial DNA will replicate in an uncontrolled way.
The process of protein synthesis will stop in the bacterium.
The most likely direct result of this alteration is that the bacterial DNA will stop replicating. Thus, the correct option for this question is A.
What is Rifampicin drug used for?The drug Rifampin is used to treat tuberculosis (TB) in many different parts of the body. It is also used by patients who have meningitis bacteria in their nose or throat who do not show symptoms of the infection to prevent the spread of the bacteria to other patients.
Rifampin specifically inhibits bacterial RNA polymerase. It is an enzyme that is responsible for DNA transcription, by forming a stable drug-enzyme complex with a binding constant of 10(-9) M at 37 C. The corresponding mammalian enzymes are not affected by rifampin.
Therefore, the most likely direct result of this alteration is that the bacterial DNA will stop replicating. Thus, the correct option for this question is A.
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Which method is most likely to reduce soil loss?
A pH testing
B. crop rotation
C. remote sensing
D. contour plowing
Answer:
B
Explanation:
Answer: it's B
Explanation: