The correct option is b. They are eukaryotes
Which of the following statements correctly describes cis-trans isomers?
A) They have variations in arrangement around a double bond.
B) They have an asymmetric carbon that makes them mirror images.
C) They have the same chemical properties.
D) They have different molecular formulas.
E) Their atoms and bonds are arranged in different sequences.
Answer: D
Explanation:
When both double-bond carbons are directly connected to a carbon and a hydrogen, cis-trans can happen. In this instance, a new isomer is produced by switching the substituent on one of the double-bond carbons. Thus, option D is correct.
What are the factor that affect cis-trans isomers?The molecule must restrict rotation. Each doubly bound carbon atom must have two nonidentical groups.
Molecules with the same atomic connectivity are what the cis isomers are known as. On the same side of the double bond, they stand in for comparable page groups.
Cis-trans isomers display a form of stereo isomerism, in which the atoms are arranged differently in three dimensions.
Therefore, On the other hand, trans isomers are made up of molecules with comparable side groups that are situated on the other side of the double bond.
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Some adult chordates do not exhibit the characteristic features of the phylum Chordata. What is the likely reason?
A likely reason why some adult chordates do not exhibit all the characteristic features of the phylum Chordata, is that some features are present during development but are subsequently lost or become another structure. (option 2)
Of the following, which may be classified as supportive connective tissue?
a. bone
b. adipose tissue
c. dense regular connective tissue
d. dense irregular connective tissue
Answer: A. Bone tissue.
Explanation: Trust me.
Compound light microscopes and transmission/transmitted light microscopes produce an image based on light transmission through the sample. Explain how the fluorescence microscope layout differs from that of transmission microscopes. Include the source of the light visualized in fluorescence microscopy in your answer.
The fluorescence microscope differs from the compound light, and transmitted light, not so much because of the structure, but instead because of how light is used to generate an image/ see the sample.
In the fluorescence microscope, the light does not go through the sample per se, instead, a filter is needed, it works with a higher wavelength, in this case, the light rays go to the sample and excite the species marked with the fluorescence substance, that is to say, the sample must be previously treated so it can absorb light and re-emitted as fluorescence (electromagnetic radiation) therefore creating an image, of light. This is possible due to the proprieties of some molecules, such as fluorochromes.
Studying the devastating effects of a tsunami can be included in which type of
science?
Answer:
earth science
Explanation:
earth science is the study of earth, the atmosphere, and the outer space
Which type of energy travels from the Sun to the earth and makes the sky appear bright during the day?. A. Sound energy
B. Mechanical energy
C. Electrical energy
D. Light energy
right answer - D. Light energy
Why are the studio habits of mind important
Answer:
because it helps guide and if inform choices
Explanation:
What is equilibrium?A. a state where things aren't changingB. a state where species are constantly movinghabitatsC. a state where a population is evolving
The correct answer is C. a state where a population is evolving. Evolution is happening right now in all populations, but it is very slow in macroorganisms (animals and plants that we can ses). So, a popul
Which phrase describes a density-independent limiting factor that can affect
Fiting
ecosystem stability?
A. High herbivore emigration from a grassland
B. Dune erosion by ocean water along a shoreline
C. An increase in the carnivore population in a desert
D. Two large populations competing for the same food source
The phrase dune erosion by ocean water along a shoreline best describes a density-independent limiting factor that can affect ecosystem stability (Option B).
What is a density-independent limiting factor?A density-independent limiting factor can be defined as any factor in a given ecosystem that may alter the homeostasis of the population that lives in a given geographic area.
These factors (density-independent limiting factors) are generally abiotic factors such as hurricanes, extreme temperature conditions, the presence of contaminants in the air that hamper life in a given area, etc.
Conversely, density-dependent limiting factors are biotic factors such as competitive species that alter the development of another population.
Therefore, with this data, we can see that a density-independent limiting factor is any abiotic condition that may alter the life of a population in a give geographic area and thus alter the homeostasis of the whole ecosystem.
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Answer:D
Explanation:
Sickled red blood cell normal red blood cellSickled red blood cells carry less oxygen than normal red blood cells. What does this demonstrate about mutations in the DNA thatcodes for hemoglobin?OA. These mutations can change the structure and function of hemoglobin.OB. These mutations decrease the amount of oxygen available to bind with hemoglobin.OC. These mutations are unable to affect the structure and function of hemoglobin.OD. These mutations can change the structure of oxygen so that it does not bind to hemoglobin.
The answer is the letter A. These mutations can change the structure and function of hemoglobin.
The effect of the mutation in the hemoglobin is it altered its structure that makes
Smooth muscles are described as…a) Voluntaryb) Involuntaryc) Striatedd) Cardiac
Smooth muscles
This type of muscle comprises smooth muscle fibers that correspond to uninucleate cells, thin and pointed at the ends. This muscle forms the contractile portion of the walls of various organs such as the digestive tube and blood vessels, which is why it is characterized by involuntary contraction (option b).
Which is NOTtrue aboutdredging?A. This is a naturally occurring process.B. It removes sediment from the bottom ofbodies of water.C. It is a form of habitat loss.D. It disrupts the organisms that live at thebottom of rivers and lakes.
Dredging by definition is the removal of sediments from the bottom of water bodies such as lakes, rivers, reservoirs, and others, this process is done mainly to maintain the water flow, deth or even increase it, as such is an entirely artificial process, therefore we can say that the correct answer is option A.
Answer:A
Explanation:
Please help with Biology question
Answer:
from the pelvis or to more distant parts of the abdomen.
Explanation:
Available energy ___________ as it is transferred from one organism to another in a food chain.
Answer:Key Points. Energy decreases as it moves up trophic levels because energy is lost as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level.
Explanation:
During which of thefollowing time periods didmost plant and animal phylaAppear?
The Cambrian period. Cambrian explosion, the unparalleled emergence of organisms between 541 million and approximately 530 million years ago at the beginning of the Cambrian Period. The event was characterized by the appearance of many of the major phyla (between 20 and 35) that make up modern animal life.
Help asap…
1. Which lobe of the brain is primarily responsible for integrating visual input (sight) and touch input from the skin?
A.frontal
B.occipital
C.temporal
D.parietal
Answer: D) the parietal lobe
Explanation:
- the parietal lobe is responsible for sensory perception and integration, including the management of taste, hearing, sight, touch, and smell. It also includes the brain's primary sensory area where the brain interprets input from other areas of the body
hope this helps :)
Answer:
I hope this helps.
Explanation:
Complete the statement below using the drop-down menus.
It is believed mitochondria evolved from
,
while chloroplasts evolved from
Mitochondria evolved from aerobic bacteria while chloroplasts evolved from cyanobacteria.
Mitochondria and chloroplasts likely evolved from engulfed prokaryotes that once lived as independent organisms. A eukaryotic cell engulfed an aerobic prokaryote, which then formed an endosymbiotic relationship with the host eukaryote, gradually developing into a mitochondrion.
Chloroplast evolutionarily derives from a primitive cyanobacteria that was engulfed by non-photosynthetic cells and, progressively, after losing most of its DNA, became the actual chloroplast that retains only a fraction of the original cyanobacterial genes. Chloroplasts of plants and algae are currently believed to originate from a cyanobacterial endosymbiont.
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This element can form a wide variety of substances, including long chains. The different substances it forms are central to the molecules found in living things.What element it this?a) carbonb) oxygenc) hydrogend) nitrogen
Introduction to Biology: Biomolecules
In the options, they are listing the four more abundant elements in living beings: carbon (C), hydrogen (H), nitrogen (N), and oxygen (O). Given that all of them are essential to forming the molecules found in living beings, we need to check their chemical properties, because they are telling us that is an element that can form long chains.
• Hydrogen, has only 1 electron and can form one bond at a time, so it cannot form long chains
,• At normal conditions, ,Oxygen, form molecules of only 2 oxygen atoms (O₂), not long chains.
,• Nitrogen, is a similar case to oxygen because at standard temperature and pressure it forms a diatomic gas (N₂)
,• Carbon ,has ,4 atoms that can form covalent chemical bonds,, which allows it to form ,polymers, at, standard temperatures.
This means the correct answer is a) carbon.
What’s the correct answer answer asap for brainlist
Answer: B
Explanation:
HELP!!!!
Which conditions are necessary for snow to form?
a) The temperature of the air in the cloud is above freezing.
b) The temperature of the air below the cloud is above freezing.
c) The temperatures of the cloud and the air below the cloud are at or below freezing.
d) The temperature of the cloud is below freezing, while the air below the cloud is above freezing.
Answer:
im pretty sure its c but this is what i found on the web: the atmospheric temperature is at or below freezing (0°C or 32°F).
Explanation:
Answer:
im pretty sure its c but this is what i found on the web: the atmospheric temperature is at or below freezing (0°C or 32°F).
Explanation:
How does the cerebral spinal fluid (CSF) protect the spinal cord?
The cerebrospinal fluid provides hydromechanical protection, acts as a mechanical shock absorber, makes the spinal cord and brain become buoyant (reduce the effective weight), as well as provide nutrients to the central nevous system. Being an important form of protection to the central nervous system.
why is it important to calculate the diameter of the field when first using the microscope? bboldiitalicsuunderlinebulleted listnumbered listsuperscriptsubscript
You can calculate the real size of small objects with the microscope, so in a field, it is important to calculate the diameter.
What is a microscope?You may determine the actual size of things that are too tiny to be seen with the eye by measuring the microscope's field of view.
The largest useable field diameter in early microscope objectives typically ranged from 18 millimeters or less, but with a contemporary plan, it can occasionally approach 26 millimeters.
A microscope measurement can be used to classify an object into a certain size group or to determine whether the produced form of a specific feature is within dimensional.
Therefore to find the size of the smallest object in the microscope calculates the diameter of the field.
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The F1 offspring of a cross has been provided for you. It is your job to work backwards in order to determine the genotypes, the genetic makeup, of BOTH parents that produced each cross. More specifically, what parental genotypes would give you these possible genotype combination?
To fill the Punnett Square we must place the alleles from one of the parents horizontally oriented on the top of a 3x3 diagram, and the alleles from the other parent vertically oriented on the left border of the diagram. After that, we must cross each one of the alleles from one parent with the alleles of the other, positioning the result of those crossings (Ee) in the blank space where those alleles meet. Therefore, we must look at the combinations and extract the allele that appears in the same line or in the same column, as follows:
Therefore, the parental genotypes are: EE x ee.
Who discovered respiratory infections and the pathogen of respiratory infections?
Who discovered respiratory infections and the pathogen of respiratory infections?
Robert M. Chanock.
Born in 1924, July 8th, he originally studied illnesses for children. Later, after being drafted through the army, made the discovery in children, and it was found to be one of the most common reasons for sickness.
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TIMED PLEASE HELP! INTRO TO PSYCHOLOGY
Describe at least 4 environmentally influenced
learned behaviors using your
own life experience.
Using my personal life experience, I can identify four learned habits that are influenced by the environment: parasites, noise, light, sound, and food pollution.
What does the study of the environment do?Environmental scientists employ the natural sciences they have learned to save the environment. Natural science expertise is used by environmental specialists to safeguard both the environment and public health. In order to reduce waste, they might collaborate with industry, advise legislators, or clean up contaminated places.
What is meant by ecology?The study on organisms and how they interact with their environment is called ecology.. The interaction between living organisms and their environments is studied by ecologists.
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A recession may be defined as
A.6 quarters of declining GDP
B.6 months of declining GDP
C.6 months of rising GDP
D.6 quarters of rising GDP
A recession may be defined as A.6 quarters of declining GDP
What three things define a recession?Recessions are times of economic collapse that are indicated by rising unemployment, falling stock prices, and a decline in the housing market.
A recession is characterised as a protracted period of real GDP (output) growth that is weak or negative and is accompanied by a considerable increase in the unemployment rate. A recession also weakens a lot of other economic activity indices.
In simple words, a recession occurs when the economy's performance declines over a protracted period of many months, as seen by a reduction in GDP, an increase in the unemployment rate, and decreased consumer expenditure. A recession may have a huge influence on people's daily life.
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Which example best describes a physical model that could be used to studythe human body?OA. A program designed to show how chemicals absorbed duringdigestion are transported to other parts of the bodyOB. A written description of how chemicals in food are broken downduring digestionO C. Molded plastic pieces that fit together to show the organs involvedin digestionD. A graph showing how blood sugar levels change throughout thedigestive process
The example that best describes a physical model that could be used to study the human body is a program designeed to show how chemicals absorbed during digestion are transported to other parts of the body.
The correct answer is option A.
If the model has been made accurately, the results shown would demostrate results that can reflect what actually occurs in the human body.
the place where a river begins is called?
The place where a river begins is called source or headwaters, being the rivers the construction from water that comes of smaller streams that join together forming tributaries.
Which of the following would result in an increase in plant growth?A. Decreased amount of other plant species, decreased amount of sunlight.B. Increase amount of other plant species, decreased amount of water.C. Decreased amount of herbivores, increased amount of sunlight.D. Increased amount of herbivores, increased amount of water.
All plants need the right temperature, light, water, air, and food to have a proper metabolism and to grow. The height of the plant is directly related to the number of nutrients in the soil and the light for its photosynthetic processes. On the other hand, the lower the number of herbivores, the less likely it is that the branches will be cut and the height of the plant will be reduced.
We can conclude that the correct answer is:
Answer:C. Decreased amount of herbivores, increased amount of sunlight.
Poikilotetherms - how they use behavior to maintain body temperature
Because poikilotherms lack the physiological ability to generate heat, their body temperature tends to conform to that of their surroundings in the absence of any behavioral intervention. Poikilotherms include "cold-blooded" animals (Kearney et al.).
How poikilotherms maintain their body temperature?
Cold stress or heat shock can alter membrane properties in poikilotherms, causing damage and, potentially, death if not corrected quickly. Low temperature stress is mitigated by modifying membrane lipids to lower their average transition temperature.The hypothalamus, a part of our brain, regulates our internal body temperature. The hypothalamus compares our current temperature to the normal temperature of around 37°C. If our body temperature falls too low, the hypothalamus ensures that heat is generated and maintained.The metabolic rate of poikilotherms increases with increasing temperature. Poikilotherms respond to temperature increases with a standard performance curve that includes increased performance, a maximum, and then declining performance as temperature rises further.To learn more about : Poikilotherms
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