Answer:
D-patterns of background radiation
Explanation:
According to the NASA, astronomers can estimate how old the universe is by comparing the age of the oldest stars and the rate of expansion of the universe. The rate of expansion of the universe is based on the Big Bang theory and it states that our universe is continuously expanding since it first developed. Astronomers measure Cosmic Microwave Background radiation resulting from the Big Bang.
Answer:
Patterns of background radiation
Explanation:
I just took the test lol
How does the cell membrane help maintain health in life
Answer:
The cell membrane controls the substances that enter and exit the cell
Explanation:
The cell membrane defines the boundaries of the cell, separating the internal components from the external environment.
The membrane is a semi-permeable barrier that lets some substances in and out, but not others.
Therefore, the cell membrane controls many of the activities of the cell. As a result, it is crucial to maintain the normal functioning of the organism
How long ago do scientists believe the continents formed Pangaea?
about 135 million years ago
about 180 million years ago
about 300 million years ago
about 4.5 billion years ago
The scientists believe the continents formed Pangaea about 300 million years ago. The correct option is C.
What is Pangaea?According to National Geographic, the Pangaea theory proposed that the tectonic plates that make up the planet's external crust glided over the inner layers until they consolidated as a landmass encircled by a huge ocean called Panthalassa.
After a while, the Angaran continent near the North Pole began to move south and combined with the northern part of the expanding Euramerican continent, forming the Pangea supercontinent. This process was completed approximately 300 million years ago.
Alfred Wegener observed the same thing in 1912 and proposed that the continents were once scaled down into a single protocontinent known as Pangaea.
Thus, the correct option is C.
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which phrase describes this plate boundary
may occur in oceans
is a type of transform boundary
is a region where earthquakes occur
Which sample is eukaryotic
Answer:
its between A or D, becuase example C looks way to much like a prokaryotic cell. Sorry its not much help.
Explanation:
Describe the motion of these galaxies (each raisin represents a galaxy in the bread model) relative to one another.
Answer: The Apparent Movement of Galaxies
The expansion of space itself makes it appear as though galaxies are moving apart and causes the spectral lines to shift, changing their colors. The expansion of space causes galaxies to appear to be moving apart from each other.
Explanation: searched up on google
____________is located in the mitochondrial membrane.
a. The citric acid cycle
b. Glycolysis The electron transport chain
c. The electron transport chain.
d. Pyruvic acid
Answer:c
Explanation: I did the same quiz and the answer is c
Cellulose helps plánts:
grow more quickly
stand up straight
take in and release gas
make food
Answer:
stand up straightExplanation:
Cellulose is a tough substance that helps strengthen the sctructure of a plant.
A student states that exercise will affect the number of times a person can squeeze a clothespin in a certain amount of time. An experiment is carried out to test this hypothesis. One group of ten students sits quietly before squeezing a clothespin as many times as possible during a one-minute interval. A second group of ten students does 25 jumping jacks before squeezing a clothespin as many times as possible during a one-minute interval. What is the independent variable?
Answer:
EXERCISE
Explanation:
In an experiment, the independent variable is the variable that the experimenter changes or manipulates in order to bring about a measurable outcome.
In this case, an experiment is carried out to test the hypothesis that "exercise will affect the number of times a person can squeeze a clothespin in a certain amount of time". The experiment contained two groups (one group sits quietly before squeezing a clothespin as many times as possible and the other does 25 JUMPING JACKS before squeezing a clothespin as many times as possible).
The independent variable is the EXERCISE (jumping jacks) that was changed for each group in the experiment.
The pupils or the dark centers of your eyes, get larger when you move into a dark area. What characteristics of living things does
this change demonstrate?
A)
Cellular Organization
B)
Response to Stimuli
Reproduction
D)
Growth and Development
Answer:
Response to stimulus
Explanation:
I think
Which of the following organelles are found in plant cells? Select all that apply.
A: cell wall
B: nucleus
C: central vacuole
D: flagella
E: lysosomes
Answer:
cell wall, central vacuole, and nucleus
Explanation:
The organelles that are found in plant cells are the cell wall, nucleus, and central vacuole. The correct options are A, B, and C.
What is a plant cell?Plants cells are the cells present in plants. These cells are the same as the animal cell, but they contain a cell wall and the animal cell does not contain a cell wall.
Plants cells also contain vacuole which is filled with water, that is missing from the animal cells. They are eukaryotic cells and these cells also contain a nucleus that is the brain of the cell.
The cell wall is made up of cellulose, filaments, and pectin protein. It gives the plant cell rigidity and protection. The vacuole is filled with water.
Thus, the correct options are A, cell wall, B, nucleus, and C, central vacuole.
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HELP it is late work i need help
Answer:
Question 1: The car is traveling 65 miles per hour
Question 2a: The car travels 97.5 miles in 1.5 hours
I am not sure about b. Also I do not know if my answers are right sorry!
Explanation:
2a: 65*1.5=97.5
Asexual Reproduction occurs when there is only one parent that gives rise to an offspring which has the identical genetic makeup of the parent. It occurs in most single celled organisms such as bacteria and some multicellular organisms such as fungi and some plants. Some advantages of asexual reproduction are it is fast and efficient. It does not require a male and a female. Organisms can reproduce quickly! A disadvantage is that there is no genetic diversity and it can only be done by simple organisms.
Sexual Reproduction involves the combining of genetic information from two parents to produce a new organism that is a combination of both parents. It occurs in most complex organisms. Some advantages to sexual reproduction are that it creates genetic diversity. It allows for evolution of the species. A disadvantage is that it requires two organisms to reproduce, a male and a female. It also requires more energy than asexual reproduction.
Using the table below, list at least two advantages and disadvantages of Asexual and Sexual Reproduction.
asexual reproduction sexual reproduction:
advantages: advantages:
disadvantages: disadvantages:
What does it take to become a king?
Answer:
Alternatively, an individual may become monarch by right of conquest, acclamation or a combination of means. A monarch usually reigns for life or until abdication. If a young child is crowned the monarch, a regent is often appointed to govern until the monarch reaches the requisite adult age to rule.
Explanation:
pls give brainliest i need 1 more to be an expert
What has happened to our system of classification as technology has become more
advanced?
Answer:
Technological advances have had a huge impact on biological classification systems overtime, providing new information on biological connections between species past and present.
Explanation:
___ is one of the two types of transport tissue in vascular plants. It transports water from the roots of a plant to the stems and leaves.
A. Xylem
B. Stomata
C. Phloem
D. Chloroplast
Answer:
Xylem
Explanation:
Xylem is vascular tissue that transports water and dissolved minerals from roots to stems and leaves. This type of tissue consists of dead cells that lack end walls between adjacent cells.
After a cell was treated with a certain chemical, its Golgi apparatus stopped functioning. Which cellular process was immediately affected by this change?
Answer:
Sorting and packaging of proteins
Explanation:
The golgi appartues is in charge of Sorting and packaging of proteins so if it would to stop the protenis wouldn't be packged
Forensic Science Please Help!!
What are some of the ways that a document examiner might try to match a questioned document to a specific typewriter? What aspects might they look at?
Answer:
Some of the ways you could try to match a questioned document to a specific typewriter would be to match the handwriting, you could also look at different changes made in the handwriting.
Some of the ways you could try to identify a questioned document to a specific typewriter would be to match the handwriting, you could also look at different alterations made in the handwriting.
Why is forensics important?The criminal justice system cannot function without the contributions of forensic science. Forensic scientists collect evidence from crime scenes and other locations, assess that evidence, and then create objective conclusions based on their findings. These conclusions can either aid in the investigation and conviction of criminals or clear an innocent individual of any wrongdoing.
Studies of handwriting for forensic purposes are an essential component of the legal system. These examinations seek to ascertain whether or not handwritten documents can be traced to particular writers by making a comparison to known exemplars of that handwriting.
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You are sitting by a lake. You drop a leaf on the lake and notice that it floats on the top of the water. Which of the following properties of water could help explain what you observed?
Answer:
Issuen Shingeki... Messatsu!
Explanation:
What you've just witnessed is something called "Buoyant force".
Buoyancy is the upthrust in the particles between the Atoms of the leaf and the water. They have the opposite charge, allowing them to repel each other- Ultimately allowing the leaf to float.
Or simply, the leaf is lighter and is less dense.
Answer:
a.
Explanation:
It has a strong tension.
When viewing a specimen in a microscope, which parts allow you to physically SEE the image?
stage
eyepiece Only
objective only
eyepiece and the objective
Answer:
When viewing a specimen in a microscope, what allows to physically see the image are both lenses, eyepiece and objective.
Explanation:
In optical microscopy, the lenses used to observe microscopic samples play an important role and are necessary for the study of such samples.
- An objective lens is the first to capture the image, providing clarity and proper focus, as well as eliminating color or shape distortions.
- Eyepiece lens obtains the image provided by the objective lens and enlarges it, so that the observer can appreciate the characteristics of the specimen studied.
Regarding other options:
Stage allows to see the prepared sample, ready for its study, but the microscopic characteristics are not appreciated. The eyepiece and objective work together to provide a proper microscopic image.Which process is this?
Answer:nitrogen probably because I see carbon the both c’s
Explanation:
It’s says in the image
In a well-structured paragraph, evaluate the experimental design of the investigation into the osmolarity of different types of apples for adequate controls and measurement techniques .
Answer:
To determine the osmolarity of two types of apples in this experiment they use four sucrose solutions and twenty-four apple cylinders. They let these cylinders stand overnight in separate beakers of sucrose solutions, and repeat the procedure for the second variety. For the first variety, they record the temperature for the sucrose solution and remove the core to determine their combined mass. Then they will record the final masses and calculate percent change by using the percentage change in mass formula. After, they repeat these same steps for the second variety.
Explanation:
A model of an animal cell is shown above. Eukaryotic cells, like this one, have compartmentalization that allows for efficiency in the cell processes. Identify the names, labels, and roles of three eukaryotic organelles that are involved in the transport, packaging, and export of a protein synthesized on a bound ribosome in this cell.
Answer:
Three eukaryotic organelles that are involved in the transport, packaging, and export of a protein synthesized on a bound ribosome in this cell are -
Endoplasmic reticulum Golgi bodiesRibosomesExplanation:
ENDOPLASMIC RETICULUM - The endoplasmic reticulum ( ER) is a broad, dynamic structure that serves many cell functions, including the storage of calcium, protein synthesis and metabolism of lipids. Separate regions, consisting of tubules, sheets and the nuclear envelope, perform the diverse functions of the ER.GOLGI BODIES -: A membrane bound organelle found in most cells is the golgi apparatus. Before secretion, it is responsible for packaging proteins into vesicles and thus plays a key role in the secretory pathway.RIBOSOMES -: The organelles which aid in protein synthesis are ribosomes. For many cell activities, protein is necessary, such as damage repair and other chemical processes.A ribosome is composed of two subunits:
the small ribosomal subunits- these read the mRNA. The large ribosomal subunits - form amino acid polypeptide chains.Hence , the labelled diagram of eukaryotic cell is attached below.
Molecules cannot react chemically unless they are......
a) polar b)solvents c)active d)in solution
*PLEASE ANSWER WITH EXPLANATION.*
Answer:
c) active
Explanation:
When in an atom the outermost shell is not full (eg. 2,8,3 ; here in the last shell it is not filled completely and needs 5 more electrons to complete it ) then the atom becomes active and molecules doesn't react unless and until an atom is active .
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A structure that performs a specialized function within a cell is known as
A) a tissue
B) an organ
C) an organelle
D) a system
A structure that performs a specialized function within a cell is known as is system.
What is system?Humans and other sophisticated multicellular organisms have coordinated organ systems that perform the functions necessary to sustain life.
The body is organized at many stages that progress together. Organ systems are made up of tissues, which in turn are made up of tissues and organs.
The coordinated activity of an organ system's organs determines how well it functions. In sophisticated multicellular animals like people, the cells are arranged into tissues, which are collections of comparable cells that collaborate on a particular activity. Organ systems are collections of organs with connected.
Therefore, A structure that performs a specialized function within a cell is known as is system.
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Atmospheric Layer Describe what happens to the temperature as altitude increases. Be sure to note specific altitudes where abrupt changes occur and how each layer is heated. Troposphere Stratosphere Mesosphere Thermosphere Exosphere Ionosphere
Answer:
Kindly Check explanation section.
Explanation:
The atmosphere has zones and each zones has it characteristics with respect to atmospheric conditions such as temperature, pressure and humidity.
So, the question only asked us to compare or show the temperature describe what happens to the temperature as altitude increases in each region of the atmosphere.
(1). Troposphere: the region known as troposphere in the atmosphere has a lower Temperature. The troposphere is a region in which the earth gets its radiation and re-radiates its electromagnetic radiation to give heat which later cools down.
(2). Stratosphere: what occurs in the region known as the stratosphere in the atmosphere is that there will be absorption of UV by the O3 layer which will in turn INCREASES THE TEMPERATURE.
(c). The Mesosphere: in this region of the atmosphere the temperature DECREASES.
(d). Thermosphere: there is surely an INCREASE IN TEMPERATURE in this region because of solar radiation.
(e). Exosphere: there is an INCREASE IN TEMPERATURE in this region too and the temperature increament is caused by ionization.
(f). Ionosphere: in this region, we have an INCREASE IN TEMPERATURE too be side of the solar radiation.
The step in photosynthesis where organisms capture CO2 in order to convert it into glucose
Does respiration expend more energy than photosynthesis?
Answer:
Explanation:
Photosynthesis vs Cellular Respiration Photosynthesis and cellular respiration are two basic metabolic processes occurring in the energy conversion of ecosystems. During photosynthesis, carbon dioxide and water are used in the synthesis of organic compounds with the aid of sunlight. This organic compounds can be used by cells as food. During cellular respiration, energy in the form of ATP is produced by breaking down food. The main difference between photosynthesis and cellular respiration is that photosynthesis is an anabolic process, where the synthesis of organic compounds occurs, storing energy whereas cellular respiration is a catabolic process, where the stored organic compounds are utilized, producing energy.
It is recommended that people at risk for serious flu complications be vaccinated so that their bodies
will produce
(1) antigens to fight the flu virus
(2) toxins to fight the infection caused by the flu virus
(3) antibodies against the flu virus
(4) antibiotics to reduce symptoms caused by the flu virus
(3) antibodies against the flu virus
Polysaccharides are
Coal is a metamorphic rock true or false
Answer:
true
Explanation
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