Robert Hooke used a microscope to see that cork looked like it was made of little boxes. Anton van Leeuwenhoek saw tiny cells swimming in pond water. Which part of cell theory do these observations best support?
A.Cells come from other cells.
B.All organisms are unicellular.
C.Cells are the basic unit of life.
D.All organisms are multicellular.____

23. Which of the following characteristics do all unicellular organisms share?
A.
All unicellular organisms reproduce.
B.
All unicellular organisms have a nucleus
C.
All unicellular organisms eukaryotes
.D.
All unicellular organisms prokaryotes.____

24. Which term describes “one or more cells that carry out all of the processes needed to sustain life”?
A.DNA
B.organism
C.organelles
D.cytoplasm____

25. DNA is genetic material that provides instructions for all cell processes. Where is the DNA located in prokaryotes?
A.in the nucleus
B.in the cytoplasm
C.in the flagella
D.in membrane-bound organelles

Answers

Answer 1

Answer:

just tryna get points lol


Related Questions

Which of the following defines Statutory Law? *
1 point
laws created by government agencies
laws that come from judges' decisions that rely on common sense and previous
cases
laws passed by Congress and state and local governments
laws based on the constitution

Answers

Answer: Laws passed by Congress and State and local governments

Hope this helps!

three sentences about the role termites play in modifying the natural proses of water carbon or nitrogen cycle

Answers

Answer:  

-help to store water in the soil (by increasing infiltration) rather than evaporating (enabling the plants survive long periods of drought)

-mix inorganic and organic compounds in the soil (and thus it can better resist the process of erosion)

-termite’s feces help to prevent erosion  

Explanation:

Decomposers break down complex organic matter into basic compounds containing nitrogen, phosphorus, and calcium, generating water (H2O) and carbon dioxide (CO2) during this process. Termites are critical in an ecosystem because they are decomposers, i.e., they are recyclers that break down organic material into nutrient-rich soil. For example, termites digest the cellulose from dead plants (due to the presence of specific bacteria in their digestive tract), thus allowing the carbon cycle.

Matter and energy can never bee created or destroyed. Explain how photosynthesis and cellular respiration demonstrate this law of nature.

Answers

They are both connected to each other. The products of photosynthesis (oxygen and glucose), is used as reactions for cellular respiration. The products of cellular respiration (carbon dioxide, water, and energy) is used as reactions for photosynthesis. So the energy is never created nor lost, the energy is just transferred for the other processes uses.

Hope this helps :)

They're linked. Cellular respiration uses oxygen and glucose from photosynthesis. Photosynthesis uses carbon dioxide, water, and energy from cellular respiration. Energy is transferred to other processes, not created or lost.

What is law of conservation of matter and energy?

According to the law of conservation of mass or principle of mass conservation, any system that is closed to all exchanges of matter and energy must have a constant mass over time since the system's mass cannot vary and neither add nor subtract quantity.

Photosynthesis and cellular respiration are connected. Oxygen and glucose are obtained through photosynthesis and used in the process of cellular respiration. Carbon dioxide, water, and the energy released during cellular respiration are the three primary components of photosynthesis. Energy is not created nor destroyed; rather, it is transferred to other processes.

Learn more about law of conservation of matter, here:

https://brainly.com/question/9434062

#SPJ2

Why does the Ocean appear to be blue?

A, because all light that reach the the ocean's surface is blue light

B, As light travels through the ocean, red and orange light gets absorbed first while blue light
continues to travel deeper, make the ocean appear to be blue

C, As light travels through the ocean, blue light gets absorbed first, which makes the ocean appear to be blue

D, The surface of the seafloor is blue

Help please

Answers

I do believe the answer is B

Answer:

its because the sky is blue and it reflects to the ocean

If I had two rocks and I wanted to see which one was bigger how would I measure it? (think before you answer)

Question 1 options:

A. length


B. temperature


C.volume


D. mass

Answers

Answer:

C.

Explanation:

Volume makes up the entire object, so the object (rock) with the most volume would be bigger.

How do scientists say the melting ice can contribute to disease occurrence? Also example

Answers

Answer:

In the melting of icebergs, icebergs could potentially contain long-dormant bacteria and viruses. Those viruses trapped in ice and permafrost for centuries, can be reactivated. That means melting those ice could potentially open a Pandora's box of diseases.  Including some that have caused global epidemics in the distant past.

Example: babesiosis

As of regular ice. The freezing of bacteria in water isn't just an old practice and ice from unclean sources could also contain disease, when melted and ingested or touched this ice as well could transmit disease not so long-dormant, however still unpleasant.

Example: AIDS

The diagram below shows the exchange of carbon dioxide (CO2) and oxygen (O2) between a cell and the blood flowing through a capillary.


In this diagram, the molecules of CO2 (represented by x’s) are moving from an area of--

Answers

Answer:

From an area of higher concentration to an area of lower concentration.

Explanation:

The molecules of CO2 are moving from an area of higher concentration to an area of lower concentration. Carbondioxide is produced as waste product in the cell during the process of respiration. This carbondioxide gas is loaded in blood cells because in the cell, concentration of carbondioxide gas is higher while on the other hand the concentration of carbondioxide is lower in the blood cells. This carbondioxide gas exchange in the lungs with oxygen which is required in the process of respiration for the production of energy in the form of ATP molecules. So from the conclusion we can say that CO2 moves from an area of higher concentration to lower concentration.

Weigh is a measure of pull of gravity on an object true or false

Answers

Answer:

The answer is "TRUE!"

Explanation:

Weight is a source of forceful motion that is generated by the pull of gravity. Gravity that is originated in the center of the earth, attracts smaller objects towards that center, in which the measurement of how strong that force really is, is weight.

Answer:

true

Explanation: weight measures the pull, describing gravity

Sound is created by our vocal cord due to
(a) Air in lungs
(b) Vibration in lungs
(c) Vibration in throat
(d) none of these

Answers

Answer:

c

Explanation:

for me Vibration in throat

summer squash purchased at your local grocery store would be biologically classified as a

Answers

Answer:

considered a vegetable.

Explanation:

Countries like Guatemala and
are learning responsible and sustainable farming practices to help their agricultural business flourish.

south africa

rwanda

france​

Answers

Answer:

The answer is Rwanda

Explanation:I took the unit test.

When T2 phages infect bacteria and make more viruses in the presence of radioactive sulfur, what is the result?

Answers

Answer:

The viral proteins will be radioactive.

Explanation: Bacteria are microorganisms that have been found to be the cause of many diseases of living organisms.

T2 phage is usually called enterobacterio phage T2 which has been known to be very virulent and infectious to a bacteria like E-coli when done in the presence of sulfur it usually leads to the formation of radioactive viral proteins due to the impact of radiation.

Different cell types can react differently to epinephrine in the human body. Choose two cell types in the human body and briefly describe the cellular effect that occurs in the presence of epinephrine.

Answers

Answer:

I haven't really learned about cell types but I did find this information

Explanation:

How can epinephrine have different effects on different cells? Different cells have different receptors that bind epinephrine. Different cells activate different enzymes as a result of epinephrine binding.

epinephrine induces increased vascular smooth muscle contraction, pupillary dilator muscle contraction, and intestinal sphincter muscle contraction. Other significant effects include increased heart rate, myocardial contractility, and renin release

Hope it at least helps a little :)

Which best describes the outcome of DNA replication?

1) The new DNA molecule is identical to the original DNA.

2) The new DNA molecule is synthesized from amino acids.

3) The new DNA molecule has a different number of codons.

4) The new DNA molecule is single-stranded.

Answers

1) the new DNA molecule is identical to the original DNA

Why did people in England feel that it was reasonable that America paid more taxes?

Answers

Answer:

See below

Explanation:

The people in England felt that it was acceptable to make to colonists pay taxes because they felt that they still owned the colonists and could push them around as they wished. They also needed the money to pay for war debt. It was also a reaction to the protests that the Americans were performing.




Fill in the blanks with either P for prokaryote, E for eukaryote, or B for both. (2 points per correct answer) – 20 possible points


1. _____ I have a cell membrane.

2. _____ I have a nucleus.

3. _____ Bacteria are an example of me.

4. _____ Animals are an example of me.

5. _____ I contain ribosomes.

6. _____ I contain cytoplasm.

7. _____ I contain genetic material, such as DNA.

8. _____ I contain membrane-bound organelles.

9. _____ Plants are an example of me.

10. _____ Your body cells are made of me.


Please I need help!!

Answers

Answer:

1. B

2. E

3. P

4. E

5. B

6. B

7. B

8. E

9. E

10. E

Explanation:

1. Both prokaryotes and eukaryotes have a cell membrane. Hence, it is B

2. Only eukaryotes have a nucleus. Hence, it is E

3. Bacteria are an example of prokaryotes because they lack a membrane-bound nucleus. Hence, P

4. Animals are an example of eukaryotes because they possess a membrane-bound nucleus. Hence, E

5. Both prokaryotic and eukaryotic cells contain ribosomes. Hence, B.

6. Both prokaryotes and eukaryotes contain cytoplasm. Hence, B.

7. Both prokaryotes and eukaryotes contain genetic material, such as DNA. Hence, B

8. Only eukaryotes contain membrane-bound organelles e.g mitochondrion, endoplasmic reticulum. Hence, E.

9. Plants are an example of eukaryotes because they possess a membrane-bound nucleus. Hence, E.

10. My body cells as a human being are made of eukaryotic cells. Hence, E.

What would be the expected result if a competitive, nonhydrolyzable analog of ATP were applied to the cytoplasmic side of a plasma membrane that contained a large concentration of the Na+/K+ pump? What would be the expected result if a competitive, nonhydrolyzable analog of ATP were applied to the cytoplasmic side of a plasma membrane that contained a large concentration of the Na+/K+ pump? The cell would accumulate Na+, but there would be no effect on K+. The cell would accumulate K+, but there would be no effect on Na+. The cell interior would experience higher than normal Na+ concentrations and lower than normal K+ concentrations. Both Na+ and K+ would accumulate outside of the cell.

Answers

Answer:

The cell interior would experience higher than normal Na+ concentrations and lower than normal K+ concentrations.

Explanation:

The Na/⁺K⁺ pump is an ATPase pump which is responsible for maintaining low Na⁺ and high K⁺ concentrations within the cytoplasm while maintaining high Na⁺ and low K⁺ concentrations in the extracellular fluid.

Since these two ions are moved against their concentration gradient, ATP hydrolysis is required to provide the energy for this process. This is done by moving in two K⁺ ions  inside while moving three Na⁺ ions outside the cell for every molecule of ATP hydrolysed to ADP and Pi.

If a competitive non-hydrolyzable analog of ATP is applied on the cytoplasmic side of a plasma membrane that contained a large concentration of the Na/⁺K⁺ pump, it will act by inhibiting the action of the Na/⁺K⁺ pump. This will result in an accumulation of Na⁺ ions inside the cell and lower than normal K⁺ ions concentration.

The decline in approximately 70% of the world’s bird species is particularly alarming to scientists because ____ .

Answers

Answer:

See the answer below

Explanation:

The approximately 70% decline in the world's bird species is alarming to scientists because some species of birds have been found to be good indicators of the health status of the environment. Birds are generally easy to detect in an environment and the ability to fly away due to terrible conditions of habitat makes them a good indicator of the health of habitats or environment in general.

A 70% reduction in the species of birds worldwide is thus alarming due to the direct correlation that exists between the species diversity of birds and the health of the environment. It could presumably be an indication that about 70% of the world's habitat has been destroyed or impacted negatively.

process of a structure of a specialized cell.

Answers

Answer:

Specialized cells are the cells though they are similar, but cells differ in size, shape and depending upon their function in body.

Example of specialized cells are: Blood cells, Nerve cells, Reproductive cells.

Tissues are made up of specialized cells, those tissues make up organs, organs make up system and systems make up bodies.

PLEASE HELP!

1. How does a clock and its internal and intricate mechanical parts make up a system(Explain)


2. Is it a living or nonliving system? (Explain)


3. How may it support a living system? (Explain)


4. Therefore what is an good example of a definition of a system?

Answers

Answer:

1. A clock with internal mechanical parts comprises a system because it is a combination of various parts that a heterogeneous in nature and function working together to achieve one end - indicating the time accurately.

Some mechanical clocks comprise of at least 10 parts namely:

Gear train: This component alone is a sub-system that comprises of at least 8 parts. These parts are broadly classified into wheels, pinions, and barrels.Main SpringPalletEscapement Escapement WheelBarrell Barrell WheelBalance Spring etc

2. A clock is a non-living system.

Living systems have certain characteristics. Some of them are:

Stimuli: Response to the environmentGrowth and development: The are able to increase in size and dimensionsHomeostasis: this is the capability of self-regulation regardless of external conditions such as temperature and pressure.   etc

3. A cannot support a living system. It can however help a human being (which is essentially a combination of various systems) to tell the time.

4. a system is a combination of heterogeneous parts that work in unison to form a whole complex entity that can perform one or more functions.

Cheers

19. This picture represents what type of cell transport?
OUTSIDE


CYTOPLASM
A. Endocytosis
B. Exocytosis
C. Osmosis
D. Passive Transport

Answers

Answer:

d

Explanation:

D would be the answer

The hydrogen used to produce ATP in the light reactions of photosynthesis comes from ___.
a. Splitting water
b. Carbon fixation
c. Movement of hydrogen ions through the membrane
d. The burning of sugar molecules

Answers

Answer:

c.

Explanation:

to check temperature in large or thick foods, you should:

-an infrared thermometer
-a bimetallic stemmed thermometer
-a thermocouple thermometer
-a pop up thermometer ​

Answers

Answer: A bimetallic stemmed thermometer:

Explanation:

An _____
is a head and throat specialist.

Answers

Answer:

Otolaryngologists

Explanation:

Whats the flow of matter in DESSERT food web?? HELP

Answers

The Sahara desert food chain begins with the plants. There are many kinds of plants in the desert. They are the Date Palms, Cacti, Thorn Acacia, Creosote Bush, Sage Brush, Desert Milkweed, Desert Willow, and Desert Tobacco. The plants are producers as they are the source of food for many herbivores.

A man with hemophilia (a recessive, X-linked disorder) has a daughter of normal phenotype. The daughter decides to start a family with a man of normal phenotype.

A. If they have a daughter, what is the probability that she will have hemophilia?
B. If they have a son, what is the probability that he will have hemophilia?

Answers

Answer:

What is the probability that a daughter of this mating with be a hemophiliac? ... C) If the couple has four sons, what is the probability that all four will be born with ... have a normal phenotype, this disorder must be caused by a recessive allele. ... man marries a woman with normal vision whose father was color-blind. note: I ...

Explanation:

during photosynthesis, what is the source of the carbon i the sugar that is created

Answers

Answer:

Plants get the carbon from the air that humans exhale. They breath it in and use it for photosynthesis.

Explanation:

Took biology last year.

During photosynthesis, what is the source of the carbon is the sugar that is created is carbon dioxide in the air.

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.Carbon dioxide serves as the source of carbon, and it enters the photosynthetic process in a series of reactions called the carbon-fixation reactions (also known as the dark reactions).

Stages of photosynthesis:

(i) Absorption of light energy by chlorophyll.

(ii) Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen.

(iii) Reduction of carbon dioxide to carbohydrates.

Learn more:

brainly.com/question/9498584

which substance compose the backbone of DNA

Answers

Answer:

phosphate and deoxyribose

Explanation:

Answer:

Phosphates and sugars

Explanation:

What role does iodine play within the thyroid?

Answers

Iodine it is an element that is required for the thyroid gland to produce thyroid hormones.
The body does not produce iodine on its own so it needs to come from dietary sources like eggs, prunes bananas, shrimp, cod, etc or you can take supplements of iodine.
When you consume iodine it quickly absorbed and enters into your bloodstream and thenyour thyroid that has tiny cells that capture the circulating iodine and takes in and oxidizes it so it can begin to be used to create (T3) and (T4 which are thyroid hormones.

Organelles found in an osteocytes

Answers

Answer:

Explanation:a

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