Answer:
C. Specimens are placed in a vacuum
Answer:
C. Specimens are placed in a vacuum
Explanation:
Since transmission electron microscopes must be used in a vacuum the specimen cannot be living. In a vacuum, there is no oxygen so nothing could survive it.
why are cells considered the most basic unit of life
Answer:
Cells are considered the basic units of life in part because they come in discrete and easily recognizable packages.
Explanation:
That's because all cells are surrounded by a structure called the cell membrane — which, much like the walls of a house, serves as a clear boundary between the cell's internal and external environments.
Hope this helps :)
Answer: "Cells are considered the basic units of life in part because they come in discrete and easily recognizable packages. That's because all cells are surrounded by a structure called the cell membrane — which, much like the walls of a house, serves as a clear boundary between the cell's internal and external environments.''
Explanation:
Peptide bonds in proteins can be broken down by the enzyme peptidase. Adrianordes a hamburger abd French fries for.lunch. He adds cheese and mayonaise to his hamburger abd then sits down to eat lunch with his friends. Which statement would most likely result from the action of peptidase in Adrians small intestine?
A. Lipid
B. Amino acid
C. Hydrocarbon
D. Glucose
Answer: Amino Acid
Explanation:
Which phrase describes one main feature of the atmosphere
Answer:
protects earth's surface
I hope this helped you!
The exchange of genetic material between homologous chromosomes when they are closely paired during meiosis is called?
this question...???
Answer:no
Explanation:
this answer would be no because of bad environmental changes like cutting down trees, polutting rivers ,lakes and oceans,ext..
What act of Congress descried general organic principles that organic farmers, ranchers, and food processors must follow?
A)Organic Act of 1916
B)Organic Act 1801
C)NPS Organic Act
D)Organic Foods Production Act of 1990
Answer:
The correct answer is - option D) Organic Foods Production Act of 1990
Explanation:
The Organic Food Production Law or Act 1990 provides the general principles regarding the production, handling, and processing of organic products and must be followed by the farmers, ranchers, and food processors.
These principles include utilizing only approved materials, conserve natural resources and biodiversity, organic and processing farms, and many other rules and principles.
Which sphere contains the solid part of the Earth that is covered with non-living rock, soil, minerals, and landforms?
A. Biosphere
B. Geosphere
C. Hydrosphere
D. Cryosphere
Answer:
b.
Explanation:
Which sequence shows a decreasing level of complexity?
a. Organs -> organism -> cells -> tissues
b. Organism -> cells -> organs -> tissues
c. Cells -> tissues -> organs -> organism
d. Organism -> organs -> tissues -> cells
Answer:
D organism, organs, tissues, cells
Which of the following is true about DNA?
Adenine pairs with thymine, cytosine pairs with guanine
Adenine pairs with guanine, cytosine pairs with thymine
There are no base pairing rules in DNA. It does what it wants.
O Adenine pairs with cytosine, thymine pairs with guanine
Answer: 1) Adenine pairs with thymine, cytosine pairs with guanine
Explanation: Here’s a helpful tip ;) Think of it as apples to trees, cars to garage. Apples being adenine, trees being thymine. Cars being cytosine and garage being guanine.
Answer:
THE FIRST ONE
Explanation:
Which best describes a semiconductor? Semiconductors are more conductive than a nonmetal and less conductive than a metal. Semiconductors are more conductive than a nonmetal and less conductive than a metalloid. Semiconductors have a high electrical conductivity. Semiconductors have a no electrical conductivity.
Answer:
B Semiconductors are more conductive than a nonmetal and less conductive than a metal
Explanation:
Just took Cumulative Exam
According to the question, Semiconductors are more conductive than a nonmetal and less conductive than a metal.
What is a semiconductor with examples?Some examples of semiconductors are silicon, germanium, gallium arsenide, and elements near the so-called "metalloid staircase" on the periodic table.
Thus, the correct option is "B".
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How are the fluke larvae transferred from the snail (invertebrate host) to the vertebrate host?
How does starting the y-axis at 300 affect the graph? Remember that no matter what number you start labeling an axis at, you have to go up by the same amount for each subsequent tick mark!
What are 5 factors needed to support life on a different planet?
Answer:
1.) Temperature
2.)Liquid Water
3.)Atmosphere
4.)energy
5.)Nutrients
There is a relationship between the number of prey organisms and the number of predator organisms in an ecosystem. Identify this relationship and explain how it occurs.
Answer:
the number of prey organisms and predator organisms is almost the same.
Explanation:
this is because when the number of prey is bigger than the number of predator then there will no balance in the ecosystem
in cell A, what is the structure labeled X?
Answer:
Yo i dont know but when someone does please help me bro
Explanation:
In cell A, the structure labeled X is a centriole.
Centrioles are cylindrical organelles found in animal cells, usually existing in pairs called the centrosome. They play a crucial role in cell division by organizing and forming the spindle fibers during the process of mitosis and meiosis.
Centrioles are involved in the separation of chromosomes, ensuring that each daughter cell receives the correct number of chromosomes.
Additionally, centrioles are essential for the organization of microtubules in the cytoskeleton, which provides structural support and maintains cell shape.
Their function in cell division and cellular organization makes centrioles vital components of animal cells.
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Tectonic plates are made up of rocks that are part of the?
Answer:
here ya go
Explanation:
A tectonic plate (also called lithospheric plate) is a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithosphere. Plate size can vary greatly, from a few hundred to thousands of kilometers across; the Pacific and Antarctic Plates are among the largest.
9. Which type of molecule (small or large) has an easier time diffusing in/out of the cell
membrane?
Answer:
small
Explanation:
I learned this in the 7that grade
why does the bimetallic strips bend when it been heated
Answer:
The bimetallic strip is made of two metal strips, stuck together. One of the metals expands much more than the other when they are heated. This causes the strip to bend.
Explanation:
Multicellular plants and unicellular algae have one important feature in common. What is it? A) They contain chlorophyll. B) They reproduce by cell division. C) All are made of one or more cells. D) The cells of each contain exactly the same parts.
can someone help me solve #8 :(
Which of the following equations correctly summarizes the process of
photosynthesis?
Answer:
H2O+CO2 LIGHT sugars+O2
Explanation:
The equation (Carbon dioxide + water ⇒ Glucose + Oxygen) summarizes the process of photosynthesis correctly, as glucose is formed along with oxygen in photosynthesis. Thus, the correct option is A.
What is Photosynthesis?
Photosynthesis is the process of formation of carbohydrate (sugar) in the leaves of green plants. In this process, the solar energy from the sun is converted into chemical energy in the form of sugar. Here, the sunlight is trapped in the chlorophyll pigment present in the chloroplast.
The sunlight with chlorophyll converts carbon dioxide and water into glucose and oxygen, the glucose is used to produce energy through Cellular respiration and oxygen is used in the process of respiration.
Therefore, the correct option is A.
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Your question is incomplete, most probably the complete question is:
Which of the following equations correctly summarizes the process of photosynthesis?
a. Carbon dioxide + water ⇒ Glucose + Oxygen
b. Glucose + Oxygen ⇒ Carbon dioxide + Water
c. Carbon dioxide + Glucose ⇒ Water + Oxygen
d. Carbon dioxide + Oxygen ⇒ Water + Glucose
The form of cellular transport that expends the cell's energy is known as… *
Assisted transport
Passive transport
Active transport
Facilitated transport
Answer:
C- active transport
Explanation:
Because energy is required in this process, it is known as 'active' transport. Examples of active transport include the transportation of sodium out of the cell and potassium into the cell by the sodium-potassium pump. Active transport often takes place in the internal lining of the small intestine.
Answer: C. Active transport. In cellular biology, active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration—against the concentration gradient. Active transport requires cellular energy to achieve this movement. Please mark brainliest!
The cell membrane acts as a barrier between the cell and its environment. Which best describes the type of barrier that the cell membrane forms?
Answer:
B: Permiable but selective, like a wall with gates.
Explanation:
The James-Lange theory of emotion is different from the Cannon-Bard and
Schachter-Singer theories in that it:
A. does not acknowledge the importance of the body.
B. says the brain and body are both important.
ОО
C. says the thalamus routes the signals.
D. does not acknowledge the limbic system.
A. does not acknowledge the importance of the body.
What is James-Lange theory?The James-Lange theory is a psychological theory of emotion that argues that emotions arise from physiological reactions to events in the environment.
According to the theory, emotions are not inherent or innate, but rather are learned through experiences with external stimuli. The theory proposes that when a person experiences an event, their body reacts with physical arousal, and it is this physical arousal that then gives rise to the subjective experience of emotion. For example, if someone is scared, their heart rate will increase, and it is the physical arousal caused by this increase in heart rate that produces the feeling of fear. The James-Lange theory has largely been discredited, but it continues to influence contemporary theories of emotion and to inform research in the field of psychology.
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What is a structure within the cytoplasm that performs a
specific function within the cell? For example, vacuoles are
an example of one of these structures whose function is to
store substances in the cell.
a) organ
b) borganelle
с) organ system
d) organic compounds
Answer:
B. Organelle
Explanation:
Which one is not needed ?
Answer:
Space
Explanation:
Answer:
Well... I would say it is gravity that is not needed.
Explanation:
In the picture at the top it says "we need to breathe air and live in some type of space. If these requirements are lacking, life ceases to exist."
Thus, stating that air, space, energy, and water are needed for life to exist. That leaves out gravity. Gravity is not needed for life to exist because, for example, humans and other living organisms are already living in outer space without the need for gravity.
Hope that helps!! :-)
HELP HELP HELP HELP.......
This type of vessel carries blood TO the heart:
Answer:
vein
Explanation:
carries blood vessels with no oxygen to the heart to get oxygen.
What condition is caused by carbon dioxide, methane, and water vapor trapping heat in the Earth's atmosphere?
A biomagnification
B greenhouse effect
C photosynthesis
D transpiration
The condition that is caused by carbon dioxide, methane, and water vapor trapping heat in the Earth's atmosphere is known as the greenhouse effect. Thus, the correct option is B.
What is the Earth's atmosphere?The earth's atmosphere may be defined as the significant presence of a layer of various gases that surrounds the whole planet. It is known that the Earth's atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases.
Carbon dioxide, methane, and water vapor are considered greenhouse gases that ultimately capture the heat radiations from the sun and liberate the earth's atmosphere. As a result of this, the average temperature of the earth's surface has gradually increased for four to five decades.
This is all known as the greenhouse effect. The Greenhouse effect may be defined as the phenomenon of keeping the earth warm due to the presence of certain gases in the atmosphere that captures heat from the sun.
Therefore, the condition that is caused by carbon dioxide, methane, and water vapor trapping heat in the Earth's atmosphere is known as the greenhouse effect. Thus, the correct option is B.
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Select three functions of the cell membrane: *
:
A. It sends and receives messages to maintain homeostasis
B. It prevents anything harmful from entering the cell.
C. It creates separation between the cell and the outside.
D. It changes lipids into usable proteins for the cell.
E. It controls the movement of molecules in and out of the cell.
F. It holds all of the genetic material for the cell.
Answer:
B, C, E
Explanation:
Answer:
B,C,E
Explanation: