Chapter 21.1 Review
1. What characteristics of living things do viruses have?

2. Compare and Contrast How is viral reproduction different from that of cell-based organisms?

Answers

Answer 1

Answer:

1. Living characteristics of viruses include the ability to reproduce – but only in living host cells – and the ability to mutate.

2.Viruses cannot reproduce independently; cell-based organisms can reproduce independently.


Related Questions

Which group of fungus convert sugar to alcohol

Answers

Answer:

yeast

Explanation:

yeast are another group of fungi important for both food and beverage fermentation the process that converts sugars into alcohol and carbon dioxide

(10 points)
The diagrams below show some changes in an
environment over time.
(A)
(B)
(C)
Which phrase best describes this sequence of
diagrams?
(1) the path of energy through a food web in a
natural community
(2) the altering of an ecosystem by a natural
disaster
(3) natural communities replacing each other in
an orderly sequence
(4) similarities between an aquatic ecosystem
and a terrestrial ecosystem
(D)
r

Answers

Answer:

The correct answer is - (3) natural communities replacing each other in an orderly sequence

Explanation:

In this diagram, there is ecological succession occurred, the process of the new natural community over the older natural community in an orderly sequences.

In this case, there are change from an aquatic ecosystem to new land ecosystem by changing various biotc and abiotic factors. The ecosystem go through various changes and physical changes.

Can someone please help me if this is correct

Answers

Answer:

looks great!

Explanation:

Answer:

it looks great sorry

Explanation:

have a great day

Which of the following is defined as the ability to be changed or change according to circumstance

Answers

Answer:

flexibility

Explanation:

20 pttttttttt quickk​

Answers

Answer
C

Explanation:
None

Which of the following is a form of ethnic segregation that persists in the
United States?
A. Immigrants are required to live together until they have become
naturalized citizens.
B. A federal law requires ethnic groups to live together until they
learn to speak English.
OC. Many American Indians still live on reservations where their tribes
had been relocated by force.
O D. Strong leaders encourage their followers to live together so that
they can control them more easily.

Answers

Answer:

C. Many American Indians still live on reservations where their tribes had been relocated by force.

Explanation:

Given that ethnic segregation has to do with the artificial separation of various people of different socio-cultural backgrounds.

Hence, the ethnic segregation that persists in the United States can be attributed to "Many American Indians still live on reservations where their tribes had been relocated by force."

Answer:

C. Many American Indians still live on reservations where their tribes

had been relocated by force.

Explanation:

6. Which of the following is true during telophase?
a. The nuclear membrane has disappeared.
b. The cell membrane begins to form cleavage furrow at the center.
C. Two new cells are formed with the same number of chromosomes as the parent cell.
d. The centromere of each chromosome divides and pulls them by the spindle fibers toward
the end of the cell.

Answers

Explanation:

what is the name of this website or the book

Bacteria Natural Selection

Answers

Answer:

Bacterial resistance arises through the simple process of natural selection. Bacteria divide rapidly, but DNA replication is imperfect. In the presence of antibiotics, while most bacteria are killed, a small number of resistant mutants may survive and take over.

Explanation:

When bacteria are initially exposed to an antibiotic, those most susceptible to the antibiotic will die quickly, leaving any surviving bacteria to pass on their resistant features

white sands national monument in New mexico has hundreds of miles of white sand dunes made of gypsum crystals. which of the following would you expect to be true of white sands national monument?
a. it receives no radiation
b. it is immune to insolation
c. it has a high albedo
d. it has no heat capacity

Answers

Gypsum, a soft mineral frequently left behind when water bodies evaporate, is what gives the sands of White Sands National Monument a high albedo their texture, hence option C is correct.

What is white sands national monument?

Despite being a very common mineral, gypsum is rarely found as sand because it readily dissolves in water and is often transported to the sea by rivers.  

The dunes seem white like snow additionally, gypsum doesn't absorb heat from the sun as silica sand does.

Therefore, gypsum is actually a transparent material, but due of the frequent collisions between the grains,, hence option C is correct.

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A 52-year-old woman has difficulty initiating voluntary movements. She can clearly state what she intends to do, describe exactly how she would do it, and picture herself doing it easily. When she is able to begin the motion, she can complete it smoothly and accurately, but she has difficulty beginning the motion. If the difficulty arises from a defect in one particular area of the nervous system, which area is most likely to be involved

Answers

Answer:

Basal Ganglia

Explanation:

The Basal ganglia function is to regulate the voluntary movements or autonomic movement. This is done by receiving and transmission of impulses. Impulses are received for upcoming movement from the cerebral cortex and then process and adjust from where it is convey to the thalamus which then relays this information back to the cortex. The well defined movement instruction is finally sent to the skeletal muscles through the tracts of the pyramidal motor system. It also function in planning and modulation of movement, memory and eye movement.

There are five types of basal ganglia corpus striatum, claustrum, amygdala, substantia nigra and subthalamic sails which all function together.

Most geologists think that the movement of Earth’s plates is caused by ____.
a. Continental Drift
b. Conduction
c. Convection Current

Answers

Answer:

convection currents

Explanation:

continental drift is a result of earth's moving plates. so it's convection currents

What allele pairs will result from this combination of alleles MmQq? ( use the 13,14,23,24 strategy).
A). All of these are correct
B). MQ, Mq, mQ, mq
C). Mq, mQ, mq, Mq
D). MM, mm, QQ, qq

Answers

The answer is B). MQ, mQ, Mq, mq

Mitosis is responsible for growth, repair, and maintenance in an organism because

Answers

Answer:

Explanation:

This is because mitosis produce two daughter cells that are genetically identical to each other thereby producing new cells that are particular to different tissues thereby making it to grow. These new cells that are genetically identical replaced the old or damaged cells , it's repair and also help in healing process.


a) Which of the three types of organisms (multicellular, unicellular and colonial) would have
been the earliest form of life?

Answers

Answer:

unicellular...lemme know if am right

The diagram shows the complete classification for the red
fox. The names for some of the taxa are missing.
Eukarya
?
Animalia
Phylum
Chordata
Class
Mammalia
Order
Carnivora
Family
Canidae
?
Vulpes
?
Vulpes vulpes
If species is the most specific group shown in the diagram, what is the
scientific name of the red fox species?

Answers

Answer:

Kingdom

Explanation:

Answer:

Kingdom

Explanation:

A-P-E-X

_____ in carbon dioxide in your red blood cells, which causes _____ in pH, causes your breathing to speed up. See Concept 42.6 (Page) View Available Hint(s) _____ in carbon dioxide in your red blood cells, which causes _____ in pH, causes your breathing to speed up. See Concept 42.6 (Page) A decrease ... a drop An increase ... a rise An increase ... a drop A decrease ... a rise Actually, it is the rise and fall of oxygen, not carbon dioxide, that controls breathing.

Answers

Answer:

1 An increase

2 A drop

Explanation:

Can someone plz help me out. I don’t really understand this.

Answers

7. b and 8. c i attached the photo for u to see how i did it

What evidence would be crucial in a forensic anthropologist's investigation?

bruised muscle around one shoulder
several bone fragments located at the back of the head
the name of the person who inflicted to injury
the pool of blood under the body

Answers

several bone fragments located at the back of the head

True or False: The lower layers of the atmosphere contain greenhouse gases that trap heat near the Earth keeping everything at a relatively stable temperature compared to space.
O True
O False​

Answers

Answer: True

Explanation:

WILL GIVE BRAINLIST!!!! What effects do weathering, erosion, and deposition have on agriculture in Texas?

Answers

Answer:

cause the soil to become less fertile therefore causing the loss of nutrients and farmers can no longer plant crops causing profits to drop.

Explanation:

List 2 organelles found in an animal cell and explain how those 2 organelles benefit the cell.

Answers

Answer:

I chose nucleus and the mitochondria

Explanation:

The nucleus is particularly important among eukaryotic organelles because it is the location of a cell's DNA. Two other critical organelles are mitochondria and chloroplasts, which play important roles in energy conversion and are thought to have their evolutionary origins as simple single-celled organisms.

Have a great day! :)

Cell includes a cell membrane, cytoplasm and cell organelles. Cell organelles are mitochondria, golgi bodies, nucleus, ribosomes, vacuoles, lysosomes, centrioles, etc.

What are cell organelles?

Cell organelles are the structures present in cell that are responsible to carry out necessary processes and maintains homeostasis.

This can include nucleus, mitochondria, golgi bodies, ribosomes, etc.

Nucleus: Nucleus is a membrane bound cell organelle that contain an entangled thread like structure called as chromatin material. This chromatin material condenses at the time of cell division and forms chromosomes. Nucleus also contain nucleolus that helps in formation of ribosomal units. it contains a fluid called as nucleoplasm.

Ribosome is the organelle that is involved in formation of protein. It has two subunits i.e. a smaller one and a bigger one. these subunits are joined at the time of protein synthesis and are formed in nucleolus of nucleus.

Thus, these were explanation of two cell organelles along with their explanation.

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Which of the following sentences are the best short summary for a flashlight?A A flashlight flashlight has has many many uses.uses.A A flashlight flashlight is is able able to to create create light light energy, energy, which which allows allows us us to to see see in in the the dark.dark.A A flashlight flashlight is is a a necessary necessary tool tool for for every every household.household.A A flashlight flashlight is is a a portable, portable, battery-battery-operated operated device device that that makes makes light.light.

Answers

Answer:

The last one

Explanation:

Flashlight is a portable, battery-operated device that makes light.

A flashlight is a portable, battery operated device that makes light is the best short summary for a flashlight.

What are the features of flashlight?

A flashlight or torch is a portable hand-held electric lamp. Formerly, the light source typically was a miniature incandescent light bulb, but these have been displaced by light-emitting diodes since the mid-2000s.

The three main features for a flashlight are Dimensions, Battery, and Light. Each of these characteristics are very important when it comes to selecting a flashlight.

Flashlights are used as a light source outdoors, in places without permanently installed lighting, during power outages, or when a portable light source is needed.

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In response to a decrease in tissue metabolic activity, tissue oxygen concentrations ________, which causes a(n) ________. In response to a decrease in tissue metabolic activity, tissue oxygen concentrations ________, which causes a(n) ________. increase : active hyperemic response decrease : dilation of the arterioles decrease : increase in tissue ischemia decrease : active hyperemic response increase : constriction of the arterioles

Answers

Answer:

The correct answer is - increase: constriction of the arterioles.

Explanation:

When the physical activity is decreased by the tissues of the muscle, the oxygen concentration in the tissue increases which leads to the constriction of the arterioles.

It takes place in order to decrease blood flow and blood pressure as oxygen requirement is less in the tissue in decreased physical metabolic activity. The constriction of arterioles results in more resistance to decrease the blood flow in capillaries.

What are three of the products whales are hunted for by the whalers and their substitute products?

Answers

I know that they are hunted with Whale oil

Please help and thank you whoever you are

Answers

i believe it’s 2. the suns radiation provides heat to the earth sorry if i am wrong

Blood leaves the heart to go to the rest of
the body through the

Answers

Answer:

arteries

Explanation:

goes back through veins

Answer:

blood leaves the heart to go to the rest of the body through the aorta which is the main Artery carrying oxygenated blood

What makes Pluto different from the 8 planets in our Solar System?

Answers

Answer:

Hey mate.......

Explanation:

This is ur answer.....

The International Astronomical Union (IAU) downgraded the status of Pluto to that of a dwarf planet because it did not meet the three criteria the IAU uses to define a full-sized planet. ... It contains the asteroid belt as well as the terrestrial planets, Mercury, Venus, Earth, and Mars.

Hope it helps!

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After eating a sugary snack, a person's blood sugar
level may rise for a short period of time. Which
statement describes the body's way of restoring
homeostasis?
A. The brain will stimulate the body to sweat
in order to increase blood sugar levels.
O B. The brain will stimulate the cells to produce
more sugar, increasing blood sugar levels.
C. The brain will stimulate the cells to
maintain the elevated blood sugar levels.
O D. The brain will stimulate the release of a
chemical that will lower blood sugar levels.

Answers

The answer should be D.

What causes evolution to occur in organisms? Explain the process of evolution and how it is driven by various factors.

Answers

Answer:

Evolution occurs when these heritable differences become more common or rare in a population, either non-randomly through natural selection or randomly through genetic drift. This occurs because organisms with advantageous traits pass on more copies of these heritable traits to the next generation

Explanation:

If not then sorry I tried my best to help out.

GOOD LUCK!!!!

What is the difference between a) prokaryote and eukaryote; b) autotroph and heterotroph; c) unicellular and multicellular?

Answers

Answer:

Explanation:

a) eukaryotes have membrane bound organelles like nuclei while prokaryotes don't

b) autotrophs = producers that can make their own food while heterotrophs consume producers or other consumers

c) Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function

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