Answer:
The correct option is;
Parfocal
Explanation:
A perfocal lens is one that when in use, the object remains in focus when the objective lens is rotated to change the magnification power of the microscope. That is the when the magnification is adjusted, the objectives remains in focus. The use of the parfocal lens however results in a small but insignificant amount of error in the focus.
Help ... ... ...... .......... .................... ........................
Answer:
D.
Explanation:
She's trying to find the affect different shapes have on the distance the plane flies, not the affect different types of paper have on distance. If she were to use different paper for each plane she'd be testing two variables instead of one.
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Part
Identify the independent variable and the dependent variable in the experiment. (3 pts)
Answer:
what experiment?
Explanation:
Water has a relatively high specific heat capacity that affects the boiling point of water compared to other molecules that are similar in shape and size. Explain the chemical properties that cause water to have a relatively high specific heat.
Answer:
first one
Explanation:
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Water's properties high heat capacity caused by hydrogen bonding, after absorption of heat, hydrogen bonds are broken and water molecules can move freely.
What are the properties of water ?Water is the chemical substance represents as H2O that is two hydrogen atoms covalently bonded to a single oxygen atom in one water molecule.
It is a colorless and tasteless have hydrogen bonds resulting present in the condensed form.
It has high melting and boiling points, with high specific heat, thermal conductivity, surface tension, dipole moment, etc.
It is an excellent solvent and helps in the transportation of ions and molecules, high latent heat of vaporization which maintain the body temperature.
Water is amphoteric in nature as it act as both acid and base, some electropositive elements reduce water to hydrogen molecule.
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A life-centered worldview is particularly concerned with which of the following?
The
is the basic unit of life.
A. organism
B. cell
C. tissue
D. organelle
Explanation:
The cell is the basic unit of life
Answer:
B. Cell
Explanation:
The Cell is the most basic unit of life
When we begin to get dehydrated, we usually get thirsty, which causes us to drink fluids. Is thirst part of a negative or a positive feedback system
Yeast is used to make the bread fluffy. Can you compare this with respiration?
Answer:
Yeast works as a leavening agent in bread, changing the sugars in dough into gas, which creates the bubbles in the loaves. … However, because yeast will eventually switch from aerobic to anaerobic respiration, the yeast will run out of nutrition -- oxygen.
Explanation:
Answer:
Yeast works as a leavening agent in bread, changing the sugars in dough into gas, which creates the bubbles in the loaves. ... However, because yeast will eventually switch from aerobic to anaerobic respiration, the yeast will run out of nutrition -- oxygen
Explanation:
Viruses that are sitting in a droplet of water on a desk are...
1 dividing very rapidlly and becoming more dangerous
2 able to live for 3 days and then die
3in a dormant replication stage
4 inactive, they need a cell to reproduce
The virus that is sitting in a droplet of water on a desk is inactive, and they need a living cell to reproduce themselves because they do not have the machinery to reproduce. Thus, the correct option is D.
Viruses can be defined as the acellular organisms. These are very small organisms which does not have any organelles. The viruses contain only the genetic material in the form of DNA or RNA and a protein coat which surrounds the genetic material.
Viruses are found to be pathogenic in nature. These can infect many organisms such as plants, bacteria, and animals. Viruses cannot divide outside a living body as they do not have the machinery to reproduce and thus requires a cell to divide. These are inactive outside the living body.
Therefore, the correct option is D.
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Explain Planetesimal Theory and Nebular Theory origin of earth
Answer:
“Global Change and the Earth System: A Planet Under. Pressure” ... all of human existence on the planet, interaction with ... understanding about how the Earth operates was applied
Explanation:
Never handle____ with your____use a brush and a dustpan to clean-up____.
A student wants to investigate how adding fertilizer affects the growth of flowering plants. She gathers 10 identical flowering plants and divides them into two groups of five plants. One group receives the same amount of fertilizer at the same time each day for four weeks. The other group does not receive fertilizer. All plants in both groups are kept at the same temperature and given the same amount of water and light every day for four weeks. The growth of the plants after four weeks what would be the independent variable , dependent variable, hypothesis, and 3 controls no
Independent Variable: Fertilizer
Dependent Variable: Plant Growth
Hypothesis: Giving plants fertilizer will help them grow faster than plants with no fertilizer.
Controls: Type of plant, watering routine, temperatures, amount of sunlight.
Explanation:
Independent variable always modifies the dependent variable.
Dependent variable always changes based off of the independent variable.
The hypothesis must be a statement that can be tested with an experiment.
Control variables should stay the same throughout the experiment in order for the experiment to be testable and accurate.
What is division of labour in multicellular organisms?
hello,
here is your answer:
**********
Multicellular organisms are made up of millions of cells. These cells are divided into separate groups. Each group performs a specific function. Since these cells carry out only a particular function, they do it efficiently.
**********
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:)
Do male doctors perform more cesarean sections (c-sections) than female doctors? a study in switzerland examined the number of cesarean sections (surgical deliveries of babies) performed in a year by samples of male and female doctors. here are summary statistics for the two distributions:
Answer:
Yes, it seems that male doctors do indeed perform more of these surgeries than the female doctors.
Explanation:
According to the given data, the distribution curve for the female doctors will be more symmetrical since the mean and median value is close to one another. The mean value and other indicators in the data set show higher values for the male doctor.
As the Black Death spread in the mid-14th century, which region tended to experience the
greatest loss of life?
A) Urban areas
B) Rural Farms
C) Remote villages
D) Mountainous areas
Answer:
urban areas
Explanation:
because the population of urban areas in those countries is more then villages.
saturated fatty acids are blank at room temperature and include blank
Answer:
They are solid at room temperature. They include a carbon single bond.
Explanation:
Look at this image- hope it helps. Because of the fact that they are not bent, they are packed tightly and solid, not liquid.
How can Polaris be located in the sky? the brightest star in the northern hemisphere by using Orion as a guide the last star in Cassiopeia by lining up the last two stars in the Big Dipper
Explanation:
many people think Polaris is the sky's brightest star.... that's because it's located nearly at the north celestial pole, the point around which the entire Northern sky turns..... shining in the northern sky every night, from northern Hemisphere locations.... diagram or big Dipper with arrow from two stars to Polaris.
Why plant cell does not burst even if placed constantly in hypotonic solution?
Answer:
Explanation:
It's simply law of osmosis.
In osmosis solvent particles move from lower solute concentration to higher solute concentration until both the solution acquire the same concentration. So when a plant cell is kept in hypertonic solution (having more solute concentration), the solvent particles move outside the cell causing it to shrink, which is also known as plasmolysis of cell.
When a plant cell is kept in hypotonic solution (having less solute concentration), the solvent particles move inside the cell causing it to swell up which is also known as deplasmolysis. But due to the presence of cell wall, plant cell can not burst. Cell wall is a very stratchable boundary made up of cellulose mainly which makes the plant cell non-collapsable (but animal cells can burst in hypotonic solution due to absence of cell wall)
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Who is the primary consumer in the following food chain?
Flower ---> Mouse
--->
Snake
--->
Hawk
Answer:
mouse
Explanation:
which organelles are found in plant cells but not animal cells
Answer:
photosynthesis cells
Answer:
cell wall and chloroplast
Explanation:
Ciara is a 32-year-old female. She recently went to the doctor because she was experiencing dizziness, swelling, and difficulty sleeping. After a variety of tests, it was determined that her kidneys were retaining sodium. Due to the sodium retention, her body was experiencing an increase in blood volume. In this scenario, using the given information, how do these test results affect her blood flow and blood pressure?
Group of answer choices
A) decrease in blood flow, decrease in blood pressure
B) Increase in blood flow; increase in blood pressure
C) Increase in blood flow, decrease in blood pressure
D) Decrease in blood flow, increase in blood pressure
Answer:
Increase in blood flow; increase in blood pressure
Explanation:
1. How are environmental science and ecology connected?
Answer:
Ecology is the scientific analysis and study of interactions among organisms and their environment. ... Environmental science focuses on the interactions between the physical, chemical, and biological components of the environment, including their effects on all types of organisms.
Explanation:
Answer:
Ecology is the study of all organisms in an environment
Environmental science is the study of the interrelatedness of everything in that environment
Explanation:
What experiments are being performed in
regards to evolution?
Answer:
I think laboratory experiments
Explanation:
Jose designs an experiment to determine how music affects a plants' growth. He plans to carry
out his experiment by using six different flowering plants. Each plant will be placed in one liter
of potting soil, and given the same amount of water and sunlight each day. Each plant will be
exposed to six types of music for the duration of the experiment. He presents his plan to his
teacher for approval, but was told there is an error in the design of his experiment. What error
did Jose make?
A. Jose's plan does not have a hypothesis.
B. Jose's plan has too many control variables.
C. Jose's plan has more than one test variable (independent variable).
D. Jose's plan does not have an outcome variable (dependent variable).
Answer:
a
Explanation:
Unicellular cells must carry out ___ of life.(1 point) A. all functions B. a few functions C. a single function D. specific functions
Answer:
all functions
Explanation:
To survive, unicellular cells must carry out all functions.
Hope this helps!
Unicellular cells must carry out all functions of life. Thus, the correct option is A.
What are Unicellular cells?Unicellular cells may be defined as those organisms that generally consist of only a single cell. This single cell carries all the essential functions of life which are required in order to survive in nature.
The complexity of the genome in a such single-celled organism is very simple. The mechanism of compartmentalization is not found inside the cell of such organisms. All the functions are carried out by the same cell.
Examples of unicellular organisms are Bacteria, amoeba, Paramecium, archaea, protozoa, unicellular algae, and unicellular fungi. They possess a cell wall made up of peptidoglycan, chitin, or other forms of polysaccharides. This protect the inner content of the cell.
Therefore, unicellular cells must carry out all functions of life. Thus, the correct option is A.
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> Question 4 How much does a 2-liter bottle of Sprite weigh?
O 2 pounds
2000 millilitres
O 2 kilograms
O 2 decibels <
Answer: 4.4 pounds
Explanation:
Sprite is mostly water (like most other drinks), and so it weighs about as much as water does, and water weighs exactly 1 kilogram per liter. So 2 liters = 2 kilograms = 4.4 pounds.
Some flowering plants are pollinated by honeybees. At some time in the past, honeybees evolved the ability to see ultraviolet radiation. Some flowers have evolved to produce ultraviolet markers on their petals that direct honeybees to the reproductive parts of the flower. What is this an example of?
Answer:
Coevolution
Explanation:
Just took the test and got it right
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The example of flowers evolving to produce ultraviolet markers on their petal in response to the ability to see ultraviolet radiation in honeybees is that of coevolution.
According to a definition, coevolution refers to reciprocal changes in 2 or more living organisms that are involved in some forms of interactions.
In other words, it is the development of certain characteristics by one organism in response to characteristics developed by another based on the fact that the two organisms interact in some ways.
In the illustration, some flowering plants depend on honeybees for pollination. Thus, as the honeybees developed the ability to see ultraviolet radiation, flowers had to evolve ultraviolet markers so as to keep guiding the honeybees to them and keep the relationship going.
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HELPPP!!!! ME!!!! PLEASE!!!!
Answer:
If plants are grown in soil containing worms, then both the plants and worms will benefit from each other because worms break down the organic matter around the dirt, fertilizing the dirt which helps the plants grow.
Which of the following domains contains organisms that are adapted to life in harsh environments?
A) domain Eukarya
B) domain Archaea
C) domain Plantae
D) domain Bacteria
E) domain Animalia
Answer:
B
Explanation:
Many species in Archaea actually require extreme temperatures and conditions to grow
The domain that contains organisms that are adapted to live in harsh environments is the domain Archaea. The correct option is B).
What is the domain Archaea?Any single-celled prokaryotic organism without a definite nucleus is referred to as an archaea, and they differ from bacteria in a number of important ways at the molecular level.
Archaea have membranes that are formed of branching hydrocarbon chains, many of which also contain rings, connected to glycerol via ether bonds, as opposed to bacteria and eukaryotes.
The microorganisms in the archaea domain are not typical of natural habitats. Instead, they can be found in severe and extreme environments like hot springs, salty environments, acidic conditions, etc.
Therefore, the correct option is B) domain Archaea.
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A tapeworm living in a students intestines is a muaalism, commensalism, or parasitism
Answer:
parasitism
Explanation:
tapeworms are parasites
what is the central element for all living life
Answer:
Carbon
Explanation:
Is a cental element in compounds