Answer: quorom sensing
Explanation:
Vibrio fischeri are bioluminescent when the population reaches a certain size. This is an example of quorom sensing.
Quorum sensing is simply defined as ability to be able to detect and also respond to population density of cells as a result of gene regulation. It allows information relating to cell density to be shared by bacteria about and also help in adjustment of gene expression. accordingly.
a nucleic acid molecules is a type
Answer:
biopolymer, or large biomolecule, essential to all known forms of life
Explanation:
Using the drop-down menus, label the parts of an
amino acid.
Label A - R group, Carboxyl group, Amino group.
Label B - R group, Carboxyl group, Amino group.
Label C - R group, Carboxyl group, Amino group.
Answer:
Label A: amino group
Label B: R group
Label C: carboxyl group
Explanation:
5._____________________is factual information that results from a scientific investigation. A.bias B.data C.assumption D.none of the above
A difficulty in fossil comparisons is that the fossil may be from: a large plant or animal an old plant or animal an extinct plant or animal
Answer:
an extinct plant or animal
Explanation:
Fossils of an animal or plant refers to its preserved or mineralized remains. Fossils have proven to be an integral part of tracing life back. Among the very many usefulness of keeping fossil records of plant and animals, one of them is discovering the evolutionary relationships between these organisms.
Fossils of plants or animals are compared with that of a present organism to discover how related they are. However, a difficulty that arises during this comparative procedure is that the fossils about to be compared may be from an extinct plant or animal.
Answer:
an extinct plant or animal
Which of the following is the long notation for 3.45 x 10^10? A 3,450,000,000 B 345,000,000,000 C 34,500,000,000
Answer:
C. 34,500,000,000
Explanation:
Firstly, 3.45 x 10^10 is said to be in a standard form, which is a simpler way to write relatively large or small numbers. Standard forms make use of powers of ten, which means that how many tens can be found in such number.
The power of ten of a small number is written with a negative sign. For example; 0.004 is written as 4 × 10^-3 while the power of ten of a large number is written with a positive sign. For example; 3.45 x 10^10 means the number is large.
In order to convert a standard notation to an expanded notation, one moves the decimal point to the right by the number of times indicated on the index. For example, 3.45 x 10^10 is written as 34,500,000,000 in long notation form by moving the decimal point to the right 10 times (as indicated on the index). A zero (0) is used to fill the blank spaces when moving the decimal point.
Hence, a standard notation of 3.45 x 10^10 can be written as 34,500,000,000 in long or expanded notation. This figure is 34 trillion, 500 million.
The regions of the midbrain that issue subconscious motor commands that affect upper limb position and background muscle tone are the
Answer: red nuclei
Explanation:
Red nuclei is the region of the midbrain that issue subconscious motor commands that affect upper limb position and background muscle tone.
The red nucleus is pale pink, it's in the midbrain and it is involved in motor coordination. Its pale pink color is due to presence of iron.
An example of a purine is An example of a purine is guanine. deoxyribose. cytosine. ribose 5-phosphate. thymine.
Answer:
guanine.
Explanation:
is water alive? Why or why not
Answer:
Neither alive nor dead. Water is non living. We talk about alive or dead only when it comes to living organisms. Living organisms are made of one or more cells and these cells are responsible for their living nature.
Explanation:
No, water is not alive because it does not possess the characteristics of life such as cellular organization, metabolism, growth, reproduction, response to stimuli, and adaptation.
Water is a fundamental substance necessary for life, but it is not considered a living organism. Living organisms are characterized by several key attributes, including the ability to perform cellular functions, respond to stimuli, grow, reproduce, and adapt to their environment. Water, on the other hand, lacks these essential characteristics.
Water is a chemical compound composed of two hydrogen atoms and one oxygen atom (H₂O). It does not have cells or a cellular structure, and it does not exhibit metabolic processes. It does not possess the ability to grow, reproduce, or adapt to changes in its environment. Water molecules do not respond to stimuli or exhibit any form of consciousness or awareness.
While water is crucial for supporting and sustaining life, it is considered a vital component of living organisms rather than a living entity itself. Living organisms rely on water for various physiological processes, such as maintaining hydration, facilitating biochemical reactions, and providing a medium for transport within the body. However, water alone does not possess the necessary characteristics to be classified as a living organism.
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Populations of coastal lodgepole pine are separated along an environmental gradient of soil pH that changes from neutral pH near the shoreline to extremely acidic pH approximately 8 km away from the shore. Populations of lodgepole pine inhabiting the ends of this environmental gradient (i.e. neutral pH versus extremely acidic pH soils) have diverged in a number of phenotypic characters, as well as cannot interbreed. What model of speciation is this pattern consistent with?
Answer:
Parapatric speciation
Explanation:
There are different types of speciation. Parapatric speciation consists of new species evolving from a continuous distribution. That is, there is no physical barrier that might impede the gene flow, in fact, it might continue during the speciation process.
There is an environmental gradient that determines different phenotypes for different environmental conditions. One phenotype is more adapted to one of the distribution extremes than the other phenotype. In the exposed case, the environmental gradient is given by the differences in pH.
In the border between the environmental extremes, there is the primary hybrid zone, where both phenotypic forms might meet and hybridize.
A 24-year-old G1P1 woman comes to the office requesting contraception. Her past medical history is unremarkable, except for a family history of ovarian cancer. She denies alcohol, smoking and recreational drug use. She is in a monogamous relationship. She wants to decrease her risk of gynecological cancer. Of the following, what is the best method of contraception for this patient?
A. Female condoms
B. Male condoms
C. Copper containing intrauterine device
D. Progesterone containing intrauterine device
E. Combined oral contraceptives
Answer:
E. combined oral contraceptives
Explanation:
Oral contraceptives will decrease a woman's risk of developing ovarian and endometrial cancer. The earlier, higher dose oral contraceptive pills have been linked to a slight increase in breast cancer, but not the most recent lower dose pills. Women who use oral contraceptive pills have a slightly higher risk of developing cervical intraepithelial neoplasia, but their risk of developing PID, endometriosis, benign breast changes and ectopic pregnancy are reduced. Both hypertension and thromboembolic disorders can be a potential side effect from using oral contraceptive pills. Condoms and intrauterine devices will not lower her risk of ovarian cancer.
How can a mother with the B blood type, having A antibodies in her plasma, carry a baby full-term that inherits the A blood type from his father
Answer:
The mother can carry a full-term baby with A blood type because the mother's blood does not mix with the baby's blood, so the mother's immune system does not activate attacking the baby.
Explanation:
The reason why a mother with B blood type and A antibodies in her system can carry a full-term pregnancy is thanks to the placenta. The placenta is a shared organ between the mother and the baby. Its function is to protect the baby and produce the necessary exchanges of nutrients and wastes between the maternal blood and the baby's blood. As the two types of blood are separated, and they never get in contact during pregnancy, the immune system of the mother does not recognize the baby as a treat. The mother can have A antibodies in her plasma due to a previous pregnancy where during delivery, the two types of blood mixed, also it can be due to any contact with the A blood type. When the foreign blood enters the body, the immune system forms antibodies for it.
Use the drop-down menus to identify each type of galaxy pictured.
Answer:
A- Elliptical
B-Irregular
C- Spiral
What cell organelle stores water for plant cells
Answer:
Hey!
Your answer is The Vacuole!
Explanation:
FUNCTION/DEFINITION : A space within a cell that is empty of cytoplasm, lined with a membrane, and filled with fluid.
This LIQUID is WATER!
HOPE THIS HELPS!!
The cell organelle that stores water for plant cells is the central vacuole.
What is the organelle that stores water?
In plant cells, there is a large, membrane-bound organelle called the central vacuole. It stores a variety of materials, including water, and takes up a sizeable amount of the cell's space. The central vacuole can take up to 90% of the space inside mature plant cells.
The turgor pressure and structural integrity of plant cells are crucially maintained by the central vacuole. It holds molecules such as carbohydrates, ions, pigments, and water. Water builds up in the central vacuole, which contributes to turgor pressure and supports plant tissues by making cells rigid. Furthermore, the turgor pressure preserves the form and structure of the leaves, stems, and other plant organs.
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This activity asks you to consider various methods of counting or estimating the size of bacterial populations and to select the method that will provide the most accurate data for plotting a bacterial growth curve. Which of the following methods would be most appropriate for gathering data to plot a bacterial growth curve throughout the four phases?
a) electronic cell counter
b) plate count
c) Any of these methods will provide reliable data for plotting a growth curve.
d) indirect estimate based on turbidity
e) direct microscopic count
Answer:
b) plate count
Explanation:
Based on this scenario, the best method for this would be a plate count. This method is used to determine the degree of bacterial contamination of a specific sample that has been made by enumeration after a period of incubation of the colonies appearing in a plate that has been inoculated with a suitable dilution of the sample. This constant count allows you to easily plot the growth curve of the bacteria throughout the phases.
The focus of _____ was to uncover the elements of the mind, while _____ focused on identifying what thoughts, feelings, and behaviors could be used for.
Answer:
1. Wilhelm Wundt
2. John Watson
Explanation:
In the history of psychology, there are theoretical and experimental contributions from various researchers who contributed to the development of experimental psychology.
Subsequently, the most important contributions are characterized, ending with Watson's behaviorist proposal and Wundt's information as a method to study psychological phenomena.
Watson's psychological research resulted in the study of behaviorism.
And Wilhelm Maximilian Wundt provided information for the beginnings of psychology as an experimental science and for Wundt, his object of study was mental activity and consciousness, and the method to study it was made up of subjective observation.
Yellowfin tuna are large fish that are found in tropical and subtropical waters around the world. They typically school under objects such as boats or patches of driftwood for protection from predators. Schooling under these structures also provides yellowfish tuna with easy access to a good source, such as smaller herbivorous fish that may be searching for food around the structure. Which trophic level in an energy pyramid do yellowfin tuna fill?
Secondary consumer is the trophic level that yellowfin tuna fill.
Secondary consumer is the trophic level that yellowfin tuna fill. The zooplankton is the primary consumer whereas the Herring fish is the secondary consumer. Then we have the tuna fish which eats the Herring fish.
What are secondary consumers?Secondary consumers are mostly formed of carnivores that graze on the primary consumers or herbivores.
Other fellows of this set are omnivores that not only feed on primary consumers but also on producers or autotrophs.
Thus, The zooplankton is the primary consumer whereas the Herring fish is the secondary consumer.
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g double-strand breaks and repair in bacteria and during homologous recombination in eukaryotes are
Answer:
similar
Explanation:
The process of repairing breaks and damages to DNA has some common aspects between eukaryotic organisms and bacteria. Environmental factors such as exposure to UV radiation can cause a g double stranded break (DSB) in the chromosome. This is inevitable and there are efficient mechanisms in place to make it back to normal again.
An accelerated idioventricular rhythm is characterized by all of the following, except:___________.
A) QRS complexes greater than 0.12 seconds in duration.
B) irregular R-R intervals and a rate less than 40 beats/min.
C) wide QRS complexes with P waves buried in the T waves.
D) regular R-R intervals and a rate between 40 and 100 beats/min.
Answer: B) irregular R-R intervals and a rate less than 40 beats/min.
Explanation:
Accelerated idioventricular rhythm is simply defined as a ventricular rhythm that has a rate which is between 40 to 120 beats in every minute.
It should be noted that idioventricular had to do with things relating to cardiac ventricle.
An accelerated idioventricular rhythm is characterized by:
• QRS complexes greater than 0.12 seconds in duration.
• wide QRS complexes with P waves buried in the T waves.
• regular R-R intervals and a rate between 40 and 100 beats/min.
Therefore, the correct option is B.
When an unstable Co-60 isotope undergoes alpha decay, the nucleus formed is
Answer:
The correct answer would be : formed nucleus is that of Mn.
Explanation:
Alpha decay is a process that is exhibited by unstable molecules to be more stable. During the alpha decay nucleus of the unstable element removes its two protons and two neutrons in a bundle that researchers call an alpha molecule.
Since a particle loses two protons during alpha decay, it changes starting with one component then onto the next.
Co has 27 protons and neutron in its nucleus emits a alpha molecules that contain 2 protons and 2 neutrons
27=2+z
z =25 in periodic table 25 atomic number of Mn.
Thus, the correct answer would be : formed nucleus is that of Mn.
Multiple Select Question
Select all that apply
Select all of the following that are characteristics of matter.
- Has mass
0 Takes up space
Present only in a solid form
I Always visible to the human eye
Answer:
The answer is has mass and takes up space.
Explanation:
Matter is any substance that has mass and takes up space. However, matter can be present in forms other than solids (liquids are also made of matter) and matter is not always visible to the human eye (gases are made of matter, but many gases cannot be seen with the human eye).
Hope this helps!
Which measuring tool should be used to measure the diameter of a soda can? A. graduated cylinder B. spring scale C. metric ruler D. stopwatch
Answer:
c. metric ruler (you're welcome!)
Metric ruler tool should be used as the unit of measurement the diameter of a soda can. Thus option C is correct.
What are the unit of measurement ?It is an act of measuring the length of objects with some specific units and it can be standard or non-standard.
Some measuring tools like a ruler, measuring tape are used to measure the length.
The height of students can be measured using a feet scale. Some of the units of length are inches, centimeters, meters, feet, etc
Steps followed to measure length are In step 1, the unit will be chosen to measure length, in Step 2 the object will be placed beside the ruler starting from point 0 on it.
In Step 3 endpoint will be marked by value. The units of length measurement are two types such as Standard and non-standard units of measuring length.
Thus option C is correct.
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You can distinguish a prokaryote apart from a nucleus by--
The presence of a cell membrane
The presence of DNA
presence of a nuclear membrane
If the cell were a factory, this part of the cell would be the packaging for export center,
What is the answer ?
Answer:
yes
Explanation:
because fectory so duty
Record the remaining colors. a. Blue: b. Red: Do you observe a selective advantage for the red or blue beads? Why?
Answer:
hello your question is incomplete attached below is the missing parts
answer: when you choose a blue habitat there is disadvantage for the red beads and an advantage for the blue beads while when you choose a red habitat there is a disadvantage for the blue beads and an advantage for the red beads
Explanation:
There is a selective advantage for the red and blue beads and the selective advantages are :
when you choose a blue habitat there is disadvantage for the red beads and an advantage for the blue beads while when you choose a red habitat there is a disadvantage for the blue beads and an advantage for the red beads. what this simply means is that the change in the habitat cause a proportional change in the phenotype
A student conducts an experiment to determine how the amount of water given to a plant affects its growth. Which of the following is not a constant or control for this experiment?
Answer:
but i think its the amount of water
Explanation:
sorry if im wrong
A biology student wanted to see if runners from the track team would have a lower respiratory rate than non-runners during exercise. She determined each student's resting respiratory rate. Each student performed the same exercise for a total of 3 minutes, measuring their respiratory rate at the end of each minute. They continued to measure their respiratory rates for 3 more minutes after the exercising had stopped.The table below shows the average respiratory rate of these students over time. Time Runners Non-runners (minutes) (breaths/min) (breaths/min)Resting respiratory rate 0 14 18Exercise phase 1 18 30 2 20 34 3 24 40Post-exercise phase 4 22 39 5 17 36 6 14 32Which of the following is best supported by the data in the table?A) The non-runners returned to resting respiratory rate faster than the runners.B) The respiratory rates of both groups increased by the same amount during exercise.C) The non-runners had a lower respiratory rate than the runners during exercise.D) The respiratory rates of the runners returned to the resting rate 3 minutes post-exercise.
Answer:
The respiratory rates of the runners returned to the resting rate 3 minutes post-exercise.
Explanation:
In the table we can see how the resting respiratory rate of runners is 14. In the post exercise part their respiratory rate is 22. After 3 boxes the number becomes 14 again. Each of the boxes is 1 minute. Then after 3 minutes, their respiratory rate becomes the same as their resting respiratory rate.
Answer:
The respiratory rates of the runners returned to the resting rate 3 minutes post-exercise.
Explanation:
1.) The runners had an overall lower resting respiratory rate than the non-runners.
2.) Although both experienced an elevation in respiratory rate during exercise, the non-runners' respiratory rates had a larger increase.
3.) In the 3 minutes post-exercise, the runners were able to return to resting respiratory rate, while the non-runners were not.
4.) The correct answer is: The respiratory rates of the runners returned to the resting rate 3 minutes post-exercise.
Which best describes the role of nitrogen in the human body?
O A. Main ingredient of protein
B. Transfers energy in cells
C. Makes energy in cells
O D. Makes up 1.5% of the human body
Answer:
O A. Main ingredient of protein
Explanation:
Nitrogen is used by our body to make amino acids which in turn make proteins.
What characteristic(s) might a human and a cat with extra sex chromosomes (XXY) share? (1 point)
Answer:
See the answer below
Explanation:
A human and a cat with XXY chromosome share two things in common mainly:
They are both malesThey both suffer from Klinefelter syndromeIn humans and cats, sex is determined by the XY chromosome system. The male sex chromosome is XY while the female sex chromosome is XX. Male individuals with an extra chromosome are XXY and usually suffer from a chromosome disorder known as the Klinefelter syndrome.
The Klinefelter syndrome in humans is characterized by small undescended testes, gynecomastia, and unusually small penis due to the shortage of the testosterone hormone.
Example of scientific question that could NOT be investigated
Answer:
Example of scientific question that can not be answered would be : "why pink is better color"
Explanation:
A scientific question is the one which can be answered in the scientific experiments to test the question. It is supposed to be testable. A non-scientific question is the one which can't be addressed utilizing trial methodology. It is said to non-testable. However, there are some question that are scientific question but can not be tested
Why pink is better color? As no boundary is given for examination, this inquiry can not be tested or investigated.
Strepsirhines have a special lower incisor called a Group of answer choices tooth comb. diastema. two-ridge tooth. bilophodont.
Answer: tooth comb
Explanation: Strepsirhines are any member of the clade (a group of animals or other organisms derived from a common ancestor species) Strepsirrhini, one of the two suborders (a taxonomic category below order and above infraorder) of primates. They have a special lower incisor called a tooth comb which consists of long, flat teeth with microscopic grooves, and used for grooming the fur.
Strepsirhines are a suborder of primates that includes lemurs, lorises, and galagos. They are characterized by a number of features, including a toothcomb, which is a specialized set of teeth in the front, the lower part of the mouth mostly used for combing fur during grooming. Hence option A is correct.
The toothcomb is made up of four lower incisors and two canines, which are fused together to form a single, continuous row of teeth. The teeth are flattened and have sharp, comb-like edges that are used to groom fur.
The toothcomb is a unique feature of strepsirrhines, and it is thought to have evolved to help them groom their fur. Strepsirrhines are nocturnal animals, and they spend a lot of time grooming their fur to keep it clean and free of parasites.
The toothcomb helps them to groom their fur more efficiently, and it also helps to distribute their scent, which helps them to communicate with each other.
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