3. What kinds of information can you learn about a sample by observing it with a compound microscope?.
Answers
Answer:
Compound microscopes are used to view small samples that can not be identified with the naked eye. These samples are typically placed on a slide under the microscope. When using a stereo microscope, there is more room under the microscope for larger samples such as rocks or flowers and slides are not required.
Related Questions
The pH of a body of water is important because pH has a synergistic effect. What does this statement mean?
Answers
SYNERGISTIC definition: relating to the interaction or cooperation of two or more organizations, substances, or other agents to produce a combined effect greater than the sum of their separate effects.
In what ways do scientists measure biodiversity? Choose all correct answers
Answers
The two most common igneous rocks are basalt and granite. Basalt is commonly found ________ and granite is found _______
Answers
The two most common igneous rocks are basalt and granite. Basalt is commonly found ocean land and granite is found continental land .
The thickness of oceanic land is 5 Km and continental land is 30 km. The continental land is made up of granite and ocean land is made of lava rock called basalt. The crust is thinnest layer of the earth. What is the oceanic crust?The outermost layer of the oceanic portion of the divergent plate boundaries.It is made of different types of basalt.It is thin and dense.What is continental crust?The thick part of the earth crust which acquires large masses on the land.It is also the layer of igneous, sedimentary and metamorphic rocks.Its thickness is about 25 to 70 kmlearn about earth
brainly.com/question/14042561
#SPJ2
Corn snakes show variety in their skin color pattern. While the complete genetics of corn
snake color are complex, the most common colors on normal corn snakes—red and
black— are each coded by one gene.
For the red gene, the allele for the presence of red pigment (R) is dominant and the allele
for the absence of red pigment (r) is recessive. Likewise, for the black gene, the allele for
the presence of black pigment (B) is dominant and the allele for the absence of black
pigment (b) is recessive.
a. Draw the Punnett square for the cross of a snake that is homozygous dominant for
the red color with a snake that is heterozygous for the red color. What percentage
of the offspring is expected to have red pigment in their skin?
b. Draw the Punnett square for the cross of two snakes that are heterozygous for the
black color. What percentage of the offspring are expected to have black pigment
in their skin?
c. The parent snakes in part (b) that are heterozygous for black color are both
homozygous recessive for the red gene. Each parent has genotype rr for the red
gene. Based on this information, what percentage of their offspring are expected
to lack both the red and black pigments in their skin? Explain your reasoning.
Answers
Answer:
a. Punnett square for the cross of a snake that is homozygous dominant for the red color (RR) with a snake that is heterozygous for the red color (Rr):
```
| R | R |
----------------
| RR | RR | RR |
----------------
| Rr | Rr | Rr |
```
In this cross, all the offspring (100%) will have the red pigment in their skin because the presence of red pigment (R) is dominant over its absence (r).
b. Punnett square for the cross of two snakes that are heterozygous for the black color (Bb):
```
| B | b |
----------------
| BB | BB | Bb |
----------------
| Bb | Bb | bb |
```
In this cross, 75% of the offspring are expected to have black pigment in their skin (BB and Bb genotypes), and 25% of the offspring are expected to lack black pigment (bb genotype) due to the absence of the dominant black allele (B).
c. Both parent snakes are homozygous recessive for the red gene (rr), meaning they lack the red pigment. Since the red gene and black gene are independent of each other, the absence of red pigment does not affect the inheritance of the black pigment. Therefore, the percentage of offspring expected to lack both red and black pigments in their skin would be the same as the percentage of offspring lacking the black pigment (bb genotype) in the Punnett square from part (b). Thus, 25% of their offspring are expected to lack both the red and black pigments in their skin.
Which of the following statements is true about the current amount of carbon on Earth? A. There is the same amount of carbon on Earth now as there was 10,000 years ago B. There is no scientifically accurate way to determine the amount of carbon on Earth 10,000 years ago C. As a result of burning and fossil fuels, there is an increased amount of carbon on Earth now than there was 10,000 years ago D. As a result of burning and fossil fuels, there is a decreased amount of carbon on Earth now than there was 10,000 years ago
Answers
Answer:
b
Explanation:
CER
Can the allele frequencies in a population change based on changes to the environment?
Answers
Yes, environmental changes can have an impact on a population's allele frequencies. Natural selection, genetic drift, mutation, and gene flow are a few of the factors that might cause this.
How does the environment affect a population's allele frequencies?The mechanisms that induce changes in allele frequencies over time include natural selection, genetic drift, and gene flow.
How does natural selection affect the frequency of alleles?Natural selection happens when an organism is more or less fit—able to live and reproduce in a given environment—as a result of one allele (or a mix of alleles from other genes). A gene's frequency tends to decrease from one generation to the next if it has a negative impact on fitness.
To know more about Natural selection visit:-
https://brainly.com/question/2725702
#SPJ1
Chargaff's rule.
Strands of DNA. Complete the chart below following
S313
DNA Strand
Сс T ATATGTGG CT CCGT GT GAC CTC
Complementary
Strand
CC
Da
Answers
Answer:
ATATGTGG CT CCGT GT GAC CTC
TATACACC GA GGCA CA CTG GAG
I assume you want me to pair this DNA strand with its complementary strand. I've just added the appropriate base, using the rule T-A and C-G.
Which other three insects are closely related to ants and also have social behaviors
Answers
Answer:
Termites, wasps and bees
Explanation:
Wasps and bees - they live in hives to raise their larvae and use pheromones to communicate. They also have a queen in both.
Termites - practically the same thing as ants but they live in large mounds and have great communicaton.
The binding of _____ to the lac repressor causes the lac repressor to ______ to the operator site, thereby _____ transcription.A. glucose, bind, inhibitingB. allolactose, bind, inhibitingC. glucose, not bind, increasingd. allolactose, not bind, increasing
Answers
The binding of allolactose to the lac repressor causes the lac repressor to not bind to the operator site, thereby increasing transcription.
What is a Lac repressor?
A DNA-binding protein called lac repressor (LacI) prevents the expression of genes that code for proteins involved in the metabolism of lactose in bacteria.
These genes are suppressed when the cell doesn't have access to lactose, ensuring that the bacteria only expend energy on building the machinery required for absorbing and using lactose when lactose is present.
When lactose is made available, bacteria-galactosidase (lacZ) first transforms it into allolactose. Allosteric regulation prevents the lac repressor's capacity to bind DNA when it is attached to allolactose, allowing genes encoding proteins involved in lactose uptake and utilization to be produced.
For more questions like Lac repressor click the link below:
https://brainly.com/question/13840799
#SPJ4
Dr. Sheffield wants to establish the discriminant validity of his pathological gambling measure. He gives his measure and three others to a group of 100 people. Which of the following provides the best evidence for discriminant validity?
Answers
He should demonstrate that the scores on his measure are not highly correlated with the scores on the three other measures to establish discriminant validity for Dr. Sheffield's pathological gambling measure.
This would indicate that his measure is distinct and specifically measures pathological gambling, rather than overlapping with the constructs measured by the other tests.
Discriminant validity is a subtype of construct validity. In other words, it shows you how well a test measures the concept it was designed to measure.
Discriminant validity specifically measures whether constructs that theoretically should not be related to each other are, in fact, unrelated.
Convergent validity takes two measures that are supposed to be measuring the same construct and shows that they are related. Conversely, discriminant validity shows that two measures that are not supposed to be related are in fact unrelated. Both types of validity are required for excellent construct validity.
The best evidence for discriminant validity would be low correlation coefficients between the pathological gambling measure and the other three measures.
To know more about the Discriminant validity https://brainly.com/question/28340851
#SPJ11
i'll give you brainliest if you put this in your own words
The pressure on the inner core makes the inner core into a solid state, the temperature is hotter that the outer core but it's not hot enough to melt a substance do to the pressure squeezing down from all the layers above!
Answers
Answer:
The pressure on the inner core puts the inner core into a solid state, therefore the temperature is hotter than the outer core, but not enough to melt a substance due to the pressure squeezing down from the other layers above.
Explanation:
Dichotomous key for plants
Answers
Answer:
a tool that allows the user to determine the identity of items in the natural world, such as trees, wildflowers etc
how is the information contained in a signaling molecule received by a cell?
Answers
Answer: Depending on the nature of the signaling molecule, it may either bind to and activate a receptor protein embedded in the plasma membrane, or it may move across the plasma membrane and bind to a receptor protein in the cytoplasm.
Explanation: I found this answer on quizlet
Answer:
How is the information contained in a signaling molecule received by a cell? Depending on the nature of the signaling molecule, it may either bind to and activate a receptor protein embedded in the plasma membrane, or it may move across the plasma membrane and bind to a receptor protein in the cytoplasm
Explanation:
All the genes located on a particular chromosome are linked and therefore form ____.
Answers
All the genes located on a particular chromosome are linked and therefore form a linkage group.
A linkage group consists of a set of genes that are located close to each other on the same chromosome and tend to be inherited together. This is because the physical distance between these genes on the chromosome is relatively small, and during the process of meiosis, the chromosome tends to be passed down to the next generation as a whole unit, rather than breaking apart and allowing the genes to be shuffled around independently.
However, it is important to note that the degree of linkage between genes on the same chromosome can vary, with genes that are located further apart being more likely to undergo recombination and be separated during meiosis. Overall, the concept of linkage is important in understanding patterns of inheritance and genetic variation within populations.
Learn more about chromosomes here:
https://brainly.com/question/30993611
#SPJ11
what kingdom always lives in water
Answers
Answer:
plantae kingdom
Explanation:
plantae kingdom which consists of trees, bushes, vines, flowering plants, ferns and moss among other living organisms. Many plants are aqueous, meaning that they survive and thrive in water whether it be fresh or salt water.
PLZ MARK BRAINLIEST! :)
Answer:
plantae kingdom
Explanation:
Recently developed techniques such as functional neuroimaging
a) have strengthened the relationship between anxiety-related personality traits and genetic mechanisms.
b) have demonstrated a pervasive disconnect between extraversion and genetics.
c) cannot be applied to studies of personality and genetics as of yet.
d) have been used to identify unknown genetic differences between monozygotic twins.
Answers
Recently developed techniques such as functional neuroimaging have strengthened the relationship between anxiety-related personality traits and genetic mechanisms.
Functional neuroimaging techniques, such as fMRI (functional magnetic resonance imaging), have played a significant role in advancing our understanding of the relationship between anxiety-related personality traits and genetic mechanisms. These techniques allow researchers to observe and analyze brain activity patterns associated with specific personality traits, providing insights into the underlying neural mechanisms and genetic factors involved.
By using functional neuroimaging, researchers have been able to identify brain regions and networks that are associated with anxiety-related personality traits. They can compare brain activity patterns between individuals with different genetic backgrounds, including variations in specific genes that may be implicated in anxiety. This approach has helped to establish a stronger link between anxiety-related personality traits and genetic mechanisms.
Learn more about personality traits here:
https://brainly.com/question/28139450
#SPJ11
Question 1 (1 point)
Which of the following explains how density dependent factors can
slow population growth?
There are more births in the population.
There are more deaths in the population.
There are more births and deaths in the population.
There are fewer births and deaths in the population.
Answers
Ventricles _____.
pump blood to the lungs and body
receive blood through the superior vena cava
receive blood through the inferior vena cava
are located in the top half of the heart
Answers
Answer:
I want to say pump blood to the lungs and body
Explanation:
Four plants are growing in a garden. One reproduces via wind pollination, another reproduces asexually, the third relies on bird pollination, and the fourth pollinates itself. Which of these most likely has the most fragrant, brightest flowers? Why?
Answers
Plants that are pollinated by birds are likely to have the smelliest, brightest flowers. So, the correct option is C.
What is Bird pollination?Bird pollination is also known as ornithophily which is defined as the pollination of flowering plants by means of birds which is sometimes a co-evolutionary association derived from insect pollination and in some parts of the world grows especially in tropical regions.
Key characteristics of bird-pollinated flowers are as follows: large flower size, tubular or cup-shaped flowers, large amounts of nectar production, attractive brightly colored flowers, low or faintly scented flowers.
Therefore, the correct option is C.
Learn more about Pollination here:
https://brainly.com/question/28301188
#SPJ1
In the ocean near Antarctica, small crustaceans called krill eat algae and other phytoplankton. Krill are eaten by
many animals in the ocean, including blue whales, penguins, and fish such as herring.
Based on this information, which food web correctly shows the flow of energy in this ecosystem?
Answers
Answer: C
Explanation:
The arrows are suppost to be pointing up
The correct food web shows the arrows pointing down; option A.
What is a food web?A food web is an interconnected number of food chains showing how organisms depend on each other for food.
Since the krill depends on algae and phytoplankton for food, the arrows will point down.
And since other organisms like penguin and blue whales depend on the krill for food, the arrows will point down towards the krill.
Therefore, the correct food web is option A.The
Learn more about food web at: https://brainly.com/question/2179
2. Why do you think soils are thicker in a valley?
Answers
what is the history of policing until present day
Answers
Answer:
In London, On September 29, 1829.
Explanation:
The history of policing started On September 29, 1829, when the government of Britain established Metropolitan Police Service in London which was the world's first modern and professional police force. The government established this police service in order to control crimes and protect the people from criminals. After Britain every country in the world established a police department in order to control crimes in their countries.
The organ system that protects the body’s internal environment from bacteria and other foreign bodies, and helps maintain stable body temperature, is the ___________ system. What is the blank answer?
Answers
Answer:
integumentary system
.............
which tides are the highest?
Answers
Answer:
Technically, there is no such thing at what tides are the highest because they are formed by water in the ocean/sea and we have no names to them because they are not an organism and they are an abiotic factor. Though, I believe the highest tide(s) in the world are in Canada. As big/high tides are usually nicknamed or called: "King Tide", "Solar Tides", "Spring Tides", etc. to decribe the highest tides.
Explanation:
Tides are created by the gravitational forces on Earth by the Moon and the Sun, together. Hope this helps! I tried my best to help you out :)
Besides being supplied in the diet, some micronutrients are synthesized in the body. For example, ______ can be synthesized by microorganisms in the intestinal tract.
Answers
Besides being supplied in the diet, some micronutrients are synthesized in the body. For example, vitamin K can be synthesized by microorganisms in the intestinal tract.
Vitamin K is a fat-soluble vitamin that plays a crucial role in blood clotting and bone metabolism. While it is found in certain foods, a significant amount of vitamin K is synthesized by bacteria that naturally reside in the human intestines.
These bacteria, mainly species of the genus Escherichia and Bacteroides, produce vitamin K as a byproduct of their metabolic processes. The synthesized vitamin K is then absorbed by the body and utilized for various physiological functions.
This symbiotic relationship between the host and intestinal bacteria highlights the importance of the gut microbiota in the production and availability of certain micronutrients.
For more such answers on Vitamin K
https://brainly.com/question/4053919
#SPJ11
Can someone please help?
Answers
Answer:
I think it is it's amino acid sequence
Explanation:
Hope this helps!
Which cell process is best modeled by the diagram above?
facilitated diffusion
passive transport
exocytosis
osmosis
Answers
Answer:
osmosis
Explanation:
trust me i know it
answer d osmosis
explanation
How
many ATP are created by fermentation?
Answers
Answer:
2 ATP
Explanation:
Fermentation begins with glycolysis which breaks down glucose into two pyruvate molecules and produces 2 ATP
Answer:
2 ATP
Explanation:
I agree
The respiratory system _____.
does not work with any other systems
removes carbon dioxide from the body
supplies the body with oxygen
includes the lungs
does not need blood to work
Answers
Answer:
Reacts to external environmental conditions and protects the body's deeper tissues; Includes skin, hair, nails, and sweat glands.
Explanation:
Answer:
2. Removes Carbon Dioxide from the body
3. Supplies the body with Oxygen
4. Includes the lungs
Explanation:
Hope it helped!
describe a properly controlled experiment
Answers
Answer:
A controlled experiment is a scientific test done under controlled conditions, meaning that just one (or a few) factors are changed at a time, while all others are kept constant.
Explanation:
A good example would be an experiment to test drug effects. The sample receiving the drug would be the experimental group while the sample receiving a placebo would be the control group. While all variables are kept similar (e.g. age, sex, etc.) the only difference between the groups is the taking of medication.