There are four kinds of tissues in the human body. They are muscle, nervous, connective, and epithelial tissues. Which of the following is true about all of these tissues?
Answer: Epithelium tissue refers to the sheets of cells that cover exterior surfaces of the body, lines internal cavities and passageways, and forms certain glands. Connective tissue binds the cells and organs of the body together and functions in the protection, support, and integration of all parts of the body. Muscle tissue is excitable, responding to stimulation and contracting to provide movement, and occurs as three major types: skeletal (voluntary) muscle, smooth muscle, and cardiac muscle in the heart. Nervous tissue is also excitable, allowing the propagation of electrochemical signals in the form of nerve impulses that communicate between different regions of the body
Explanation:
Which of the following is not a natural cause of extinction?
a.competition due to overpopulation
b.introduction of non-native species
c.catastrophic events
d.disease
Answer:
Introduction of Non-native species would be the answer. ( B )
Explanation:
Now let's break it down.
A. Competition due to overpopulation
Competition due to overpopulation, as competition of resources rises, species will fight among each other, and slowly, population will go down. But I don't see the reason of why it would cause an extinction... perhaps a decrease of population. See, once populations starts decreasing, resources will increase. And ONCE resources increase, populations starts increasing, and there goes competition. Resources decreases, populations decreases, and the whole process repeats. So I'm not quite sure whether it will cause extinction of a species.
B. Introduction of Non- native species.
So what does it mean by Non-native species?
It means that species that have no effect and doesn't exist in the ecosystem. So that will definitely not affect the population whatsoever.
C. Catastrophic Events
Well, common sense. Many people died of tsunamis, tornado and other natural disasters every year. Too many disasters can cause the population to cease.
D. Disease
This we can relate, especially the Coronavirus. Many humans died of the deadly virus. Same goes to animals. If a disease gets too deadly, population will decrease and drive the species to extinction.
So, the Answer would be B.
HOPE THIS ANSWER HELPED :)Among the given options, the one that is a natural cause of extinction would be:
b). Introduction of non-native species.
'Non-native species' are described as the species that are introduced to an ecosystem different from its native habitat.
These species are severe threat to the existing ecosystem of the new habitat including plants, animals, aquatic life, etc. where they've been shifted.
Thus, it is not a natural cause as these species are not naturally introduced but the humans introduce them.
They turn so dominating to get their food and other things that it lead not only harmful but also lead to the extinction of the native species.
Hence, option b is the correct answer.
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Compare and contrast photosynthesis and cellular respiration. Why are the processes like two sides of the same coin?`
Answer:
In photosynthesis reserve food material (starch) is prepared using CO2 and H2O .
In cellular respiration reserve food material is broken down into CO2 and produce energy.
Give the function of all of the following parts of a typical flower. a. Petals
b. Stamen c. Pistil
d. Ovule
A.Petals. Usually, petals are the most prominent part of a flower structure, owing to their vivid color (in most flower examples) and sometimes scent. Their main function is to attract pollinators and also protect the inner reproductive structures of a flower. In some flowers, petals are absent or reduced.
B.Stamen: The pollen producing part of a flower, usually with a slender filament supporting the anther. Anther: The part of the stamen where pollen is produced. Pistil: The ovule producing part of a flower. The ovary often supports a long style, topped by a stigma.
C.Pistil interaction precedes fertilization in the flower. Important changes occur in the pistil, which play a role supporting, but also controlling pollen-tube growth
D. The ovule is the organ that forms the seeds of flowering plants. It is borne in the ovary of the flower and consists of nucellus protected by integuments, precursors of embryo/endosperm, and seed coat, respectively.
The picture below shows a typical structure of....
A:cell membrane
B:ribosome
C:lysosome
D: cell wall
I would answer with A. cell membrane
I know it's not B. ribosome for a fact
What is the cell labeled X
Answer:
im assuming stomata or guard cells. need the whole picture though
i need help can you pls help me <3
Answer:
temparate deciduous
grasslands
tropical rain forest
taiga
tundra
grasslands
tropical rain forest
temperate deciduous rainforest
Explanation:
air resistance
Answers
A. the force that accelerates object to earth
B. the general term for the force that one surface exerts on another when they rub against each other.
c. the kind of friction that slows a falling object
d. the state the exists when the force acting on an object is gravity
e. the kind of friction that results when you rub sandpaper on wood.
f. the kind of friction that results when a wheel turns on a surface
g. measure of the force of gravity on a object
h. a falling object reaches this when the force of gravity and air resistance are balanced.
i. the kind of friction that exists between oil and a door hinge.
À ________ is a segment of DNA which codesfor a specific trait
Answer:
The answer for the blank is= Gene
Answer:
A gene is a segment of DNA which codes for a specific trait.
Explanation:
Cellular development, replication, and cell repair are controlled by genetic information stored within DNA molecules. The long-chain, helical macromolecules of these deoxyribonucleic acids, are constructed from complex sequences of covalently bonded monomers called nucleotides.
Genes, can span several nucleotides and even multiple chromosomes. They are encoded through the processes of transcription, translation to become proteins, that determine physical characteristics or phenotypes.
How would I explain it?
Answer:
What would explain the change in reaction rate —degradation of cellulose by the enzyme cellulase—after 75 minutes is the depletion of the substrate on which the enzyme must act.
Explanation:
A chemical enzymatic reaction, such as cellulase degradation of cellulose, occurs until the substrate is consumed.
The solution to which cellulase is added has the same concentration of cellulose, and what is done is to add enzyme. In the graph you can see that the reaction takes place over time, decreasing the amount of glucose obtained. From 75 minutes onwards the reaction rate decreases as well as the amount of glucose obtained from the reaction, which is due to the fact that the substrate —cellulose— is being depleted.
How does the ozone layer affect life on Earth?
a.
causes respiratory illness
b.
increases photosynthesis in plants
c.
causes damage to living tissue
d.
filters out harmful ultraviolet radiation
(30 points!)
Answer:
(D) filters out harmful ultraviolet radiation
Explanation:
edg 2020
Question 8 10 According to the current fossil record, scientists believe that life on Earth began about how long ago? 0.5 billion years ago 0 1 million years ago O 65 million years ago 3.5 billion years ago Question 9 10
Answer:
According to the current fossil record, scientists believe that the life on earth began about 3.5 billion years ago.
Which of the following are considered disadvantages of an agricultural society?
I. Dependence on a few crops
II. Greater vulnerability to natural events
III. Need for intense physical labor
I only
I and II only
I and III only
I, II, and III
The disadvantages of an agricultural society include dependence on a few crops, greater vulnerability to natural events and need for intense physical labor. The economy of an agricultural society depends on climatic factors.
An agricultural society can be defined as a population where the economy is based on producing extensive crops.
An agricultural society can also be defined when a country is based its economy on agriculture instead of industrialization.
These economies are highly dependent on climatic natural factors which can affect the yield of a limited number of crops (e.g., maize, wheat, soybean, etc).
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How many gigatonnes of carbon are stored in each of the following locations?
(a) The atmosphere
(b) Dissolved as organic carbon in the upper levels of the ocean
(c) Organic matter in the soil
(d) Approximately how much
carbon is in Coal compared
to soil and organic matter
a)121 million gigatons or 121 million billion metric tons" of carbon).
B)The ocean, with around 38,000 gigatons
c)60 gigatons of carbon
WEIRD QUESTION *not school related*
I stayed up 24 hours, studying for some biig tests coming up and I'm feeling groggy so I might take a nap later, but I don't want to sleep for like 10 hours, just like 3
but like, how do I pull that off?? set an alarm??? ask someone to wake me up??
Answer:
Set multiple alarms!1!!1!!1!1 When you go to bed put your phone far away so you'll have to walk to it to turn it off.
Explanation:
It's most likely you'll fall asleep and feel tired when you wake when you don't wanna wake up. Putting it at a distance and setting it multiple times in short times will help you wake up better as it can continuously make you more and more awake.
Which of the following is a function of the mitochondria in a cell?
A
The mitochondria fold proteins into new shapes.
B
The mitochondria create the most energy for the cell.
C
The mitochondria regulate what enters and exits the cell.
D
The mitochondria use the sun to undergo photosynthesis
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Question:-
• Which of the following is a function of mitochondria in a cell?
Answer:-
– B. The mitochondria create the most energy for the cell
Reason:-
Because mitochondria is known as the power House of the cell.
It release energy in the form of ATP (Adenosine triphosphate).
A geologist is studying a mountain. It is made up of many relatively even
layers of igneous rock. What can the geologist conclude about how the
mountain formed?
A. It formed when an earthquake caused faults to form in a body of
rock.
B. It formed when a glacier melted and deposited rock and sediment.
C. It was formed by many layers of sediment piling up.
D. It was formed by a series of volcanic eruptions.
The mountain was formed by a series of volcanic eruptions. Option D
What can be concluded?The geologist can infer from the data that the mountain was created by a sequence of volcanic explosions. It is stated that the mountain is composed of numerous, generally uniform strata of igneous rock.
In most cases, molten material such as lava or magma that is ejected during volcanic eruptions solidifies to produce igneous rock.
Multiple igneous rock strata may accumulate over time while the volcanic activity persists, eventually producing a mountain.
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A multicellular organism begins life as a single cell-a fertilized egg with a
complete set of chromosomes. The picture in Figure 10-2 above shows how the
cell divides to become two cells, then four cells, eight cells, and so on. Which of
the following statements best describes what happens during this process?
Answer options:
a.) chromosomes are duplicated before cell division so that each new daughter cell has a complete set.
b.) chromosomes are divided evenly during cell division so that each new daughter cell has an equal share of the original set.
c.) chromosomes are stored in the original cell to direct the division of all daughter cells, which do not have their own chromosomes.
d.) chromosomes are randomly distributed during cell division so that some new cells have partial sets while others have complete sets.
Answer:
a.) chromosomes are duplicated before cell division so that each new daughter cell has a complete set.
Explanation:
The cell divisions that allow organisms to grow are called mitosis. Before mitosis, all the DNA is duplicated.
Then, during mitosis, it condenses to form chromosomes. The identical chromosomes align in the centre of the cell. Then, they are equally distributed to among two daughter cells.
These two daughter cells each have a complete set of chromosomes. Each daughter cell identical to the parent cell and to the other daughter cell.
How do calcium ions help amplify the signal?
HELP PLEASE!!!
Answer:
Calcium signaling is the use of calcium ions (Ca2+) to communicate and drive intracellular processes often as a step in signal transduction. Ca2+ is important for cellular signalling, for once it enters the cytosol of the cytoplasm it exerts allosteric regulatory effects on many enzymes and proteins. Ca2+ can act in signal transduction resulting from activation of ion channels or as a second messenger caused by indirect signal transduction pathways such as G protein-coupled receptors.
Explanation:
Wikipedia
The diagrams below illustrate models of various chemical compounds..
How do the test variables (independent variables) and outcome variables (dependent variables) in an experiment compare?
A. The outcome variable (dependent variable) controls the test variable (independent variable).
B. The test variable (independent variable) controls the outcome variable (dependent variable).
C. The test variable (independent variable) and outcome variable (dependent variable) have no affect on each other.
D. The test variables (independent variables) and outcome variables (dependent variables) are the same things.
Answer: B
Explanation:
The independent variable is the experimenter so it changes and controls the dependent variable because it is assumed that the dependent variable gets a direcr effect from the independent variable.
Answer: should be B
Explanation:
ILL GIVE BRAINIEST PLS HELP ITS DUE RLY SOON!! explain how
the geologic processes involved in the formation
of coal, oil, and natural gas cause uneven
distributions on Earth.
Explanation:
RESOURCE LIBRARY COLLECTION
DISTRIBUTION OF NATURAL RESOURCES
Different regions have access to different renewable or nonrenewable natural resources such as freshwater, fossil fuels, fertile soil, or timber based on their geographic location and past geologic processes. Access, or the lack thereof, contributes to a place’s economic development, political relationships, and culture. For example, the Great Plains region of the United States is known for its abundance of fertile soil. As a result, its main industry is agriculture. Corn, soybeans, and wheat are globally exported from this region and serve as the main economy. On the other side of the spectrum, the desert southwestern region of the United States depends on the Central Arizona Project canals to transport water from the Colorado River in order to support agriculture and urban areas. Arizona’s right to use water from this river stems from the Colorado Compact, an agreement established in 1922.
Which best matches a type of genetic material with its description?
A.Nucleotides form a helical structure that is called a gene.
B.Genes combine to form structures called nucleotides.
C.Chromosomes create genes.
D.DNA is located in the nucleus.
Answer: C - Chromosomes create genes
Explanation: took the test 100%
Answer: chromosomes create genes
Explanation:
It’s c
What molecule contains the most energy ?
Answer:ATP
Adenosine 5'-triphosphate, or ATP, is the most abundant energy carrier molecule in cells. This molecule is made of a nitrogen base (adenine), a ribose sugar, and three phosphate groups. The word adenosine refers to the adenine plus the ribose sugar.
Explanation:
Which two organs of a plant interact to cause a plant to bend toward light?
A. Stems and roots
B. Flowers and leaves
C. Roots and Flowers
D. Leaves and Stems
In single-celled organisms, materials are stored primarily in
Answer:Vacuole
Explanation:Vacuoles basically do the functions of storage, ingestion, digestion, etc.
A species is a group of organisms so similar to one another that they can breed and produce fertile offspring. True or False.
Answer:
True
Explanation:
That is the exact definition that I learned.
Describe the role of the lens in vision.
Answer:
The lens is located in the eye. By changing its shape, the lens changes the focal distance of the eye. In other words, it focuses the light rays that pass through it (and onto the retina) in order to create clear images of objects that are positioned at various distances.
Explanation:
Also, I searched this up, but I hope this helps :) !
The main optical function of the lens is to transmit light, focusing it on the retina. The cornea contributes about 80% of total refraction, while the lens fine-tunes the focusing of light onto the retina.
What is refraction?Refraction is the redirection of a wave as it passes from one medium to another. The redirection can be caused by the wave's change in speed or by a change in the medium.
Moreover, refraction is the bending of light (it also happens with sound, water and other waves) as it passes from one transparent substance into another. This bending by refraction makes it possible for us to have lenses, magnifying glasses, prisms and rainbows. Even our eyes depend upon this bending of light.
Therefore, light waves change speed when they pass across the boundary between two substances with a different density , such as air and glass. This causes them to change direction, an effect called refraction.
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Which of the following are true about cancer? Check all that apply.
Cancer cells display contact inhibition.
Cancer is contagious.
Cancer cells divide uncontrollably.
Cancer can spread around the body.
Cancer comes in many forms.
Cancer affects only the elderly.
Cancer cells invade healthy tissue.
Cancer does not obey contact inhibition.
Answer: I think these are the answers:
- Cancer can spread around the body.
- Cancer cells invade healthy tissue.
- Cancer cells display contact inhibition.
- Cancer comes in many forms.
- Cancer cells divide uncontrollably.
and I think "Cancer does not obey contact inhibition." is one too... I hope this helps! :D
Explanation:
Cancer cells:
• Divide uncontrollably
• Comes in many forms
• Invade healthy tissues
• Does not obey contact inhibition
What is cancer?Cancer is a diseased condition in which uncontrolled cell division takes place.
Cancer are of two main types: benign and malignant.
Benign tumours are localized to a particular organ and thus can be removed through chemotherapy or surgery.
Malignant tumours spread to body parts through blood stream and attack the healthy cells. This property of metastasis is unique to cancer cells.
Normal cells show their contact with the adjacent cells. In cancer, contact inhibition is lost and so they divide in an uncontrolled manner.
Breast cancer, leukaemia, lung cancer etc are some of the examples of cancer.
Cancer is detected through tissue biopsy. X-Rays, CT-Scan, MRI are some other techniques that detect cancer in the body.
Cancer can be treated if diagnosed early. Radiotherapy, chemotherapy and surgical intervention are the part of cancer treatment.
Therefore, cancer is considered a serious medical complication.
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Which type of rock has a coarse texture due to slow cooling in magma chambers?
A.extrusive
B.intrusive
C.metamorphic
D.sedimentary
Answer: Intrusive
Explanation:
If magma cools slowly, deep within the crust, the resulting rock is called intrusive or plutonic. The slow cooling process allows crystals to grow large, giving intrusive igneous rock a coarse-grained or phaneritic texture.
Hope this helps!! :D
Answer:
intrusive
Explanation:
Intrusive igneous rocks form at some depth within the crust due to slow cooling of magma, resulting in formation of large crystals. Individual crystals can be seen with the naked eye. These rocks are termed texturally as coarsely crystalline or phaneritic.
If matter (mass) has never been observed by any process or experiment to be created or destroyed, then using inductive reasoning it would be logical to conclude:
the mass of the universe must have created itself.
the known laws of science cannot account for the origin of mass.
the amount (quantity) of mass in the universe has never changed.
Answer:
B.the known laws of science cannot account for the origin of mass.
Explanation:
i just finish that test
