Which pair of structures would provide a positive identification of a plant cell under a microscope?

ribosomes, chloroplasts


cell wall, mitochondria


plasma membrane, large central vacuole


cell wall, chloroplast
HELP ITS OVERDUE

Answers

Answer 1
Cell wall I’m not sure :)
Answer 2

Answer:

Cell wall, chloroplasts

Explanation:

Only plant cells have a cell wall and chloroplasts. Animal cells have cell embrane instead of a cell wall, and the chloroplasts are responsible for photosynthesis which only occurs in plants.


Related Questions

write a mini-essay about Balanced & Unbalanced Forces

Answers

Answer:

Forces have a magnitude (strength) and a direction. Forces can be represented as arrows with the length of the arrow representing the magnitude of the force and the head of the arrow pointing in the direction of the force.  Using such arrows, the resulting force (net force) and direction can be determined.

Forces acting on an object can be balanced or unbalanced.

Forces have a magnitude (strength) and a direction. Forces can be represented as arrows with the length of the arrow representing the magnitude of the force and the head of the arrow pointing in the direction of the force. Using such arrows, the resulting force (net force) and direction can be determined. Forces acting on an object can be balanced or unbalanced. Balanced forces will cause no change in the speed of an object.

Balanced forces acting on an object in opposite directions and equal in strength, as shown in the arrows below, do not cause a change in the speed of a moving object.
Objects that are not moving will not start moving if acted on by balanced forces.
For example, in arm wrestling where there is no winner, the force exerted by each person is equal, but they are pushing in opposite directions. The resulting force (net force) is zero. Or, in a tug of war, if there is no movement in the rope, the two teams are exerting equal, but opposite forces that are balanced. Again, the resulting force (net force) is zero. Unbalanced forces are not equal, and they always cause the motion of an object to change the speed and/or direction that it is moving. When two unbalanced forces are exerted in opposite directions, their combined force is equal to the difference between the two forces.
The magnitude and direction of the net force affects the resulting motion
This combined force is exerted in the direction of the larger force
For example, if two students push on opposite sides of a box sitting on the floor, the student on the left pushes with less force (small arrow) on the box than the student on the right side of the box (long arrow).
The resulting action (net force: smaller arrow to the right of the = shows that the box will change its motion in the direction of the greater force as shown below:

Explain in a paragraph (4+ sentences) how they are connected in an ecosystem. "They" is referring to the animals below-

Arctic wolf
Musk ox
Grizzly bear
Arctic Hare
Snowy Owl
Arctic Tern
Polar bear
Reindeer
Arctic Fox
Snow bunting
Golden Eagles

Answers

They are all connected in the ecosystem because they all either eat each other (prey, predator) and they are all connected by competing for the same food source. They all live in an ecosystem made up of abiotic and biotic factors. They are all connected by being either the predator or prey.

Please give the correct answer

Answers

Answer:

D

Explanation:

The answer is D I think :)

Biological control is used to control pests. Unfortunately there are risks involved if the biological control is a new species to the area. What are they?

Answers

they can easily be a risk so for that u need to search it up
they can harm the environment and animals living in it

What do you think makes an argument stronger? Explain 1- 2 things that would make an argument stronger and more believable?

(This is for science so try to make it science-related.)

Answers

Answer:

a diagram, speech photos and classifications

Explan

proof or evidence of where you got the answer, or a diagram

Explain how cell division is linked to cell theory.

Answers

All living things are organism

Before humans ever ventured into space, we fantasized about visiting—and even living on—other planets. As technology continues to develop, it may one day be possible for humans to call planets other than Earth's home. Space scientists have several possible Earth-like planets and moons insight, but one that is of high interest is Kepler-186f, a planet 500 light-years away. It orbits a star much like the Sun, and it orbits in a habitable zone: it is far enough from the star to allow for the pooling of water (if it is present) on the planet's surface.

Is being in a "habitable zone" enough to say the planet is habitable for human life? What characteristics would an Earth-like planet need to have to support life? What challenges would we face traveling to and colonizing Kepler-186f or other Earth-like planets outside of our solar system? Do you think scientists should spend time looking for Earth-like planets before we have the technology to visit them? Why or why not? PLEASE HELP ME!!! :((

Answers

Answer: yes because A habitable zone (HZ) in astronomy is a region of space where conditions are best for life to form as on Earth. Planets in these areas are the most likely to have extraterrestrial life. The habitable zone may also be called the "life zone", "comfort zone", "green belt" or "Goldilocks zone".

Explanation:

how would I write out cm before 1 on a metric ruler
ex : 8'4 cm

Answers

In the metric system you multiply by ten so it should be centimeter to basic unit right? So it would be .1 or 0.1
i think it’s 0.1 ..?

Which stage of the cell cycle involves cell growth and DNA replication?

mitosis
cytokinesis
interphase
prophase

Answers

Answer:

interphase aka "c"

Explanation:

During interphase, the cell grows and DNA is replicated. During the mitotic phase, the replicated DNA and cytoplasmic contents are separated, and the cell divides.

So basically c

Please look at the picture and answer two boxes

Answers

Answer:

ok i looked      eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeee eeeeeeeeeeeeeeeeeeee eeeeeeeeeeee

Which image is a correctly labeled prokaryotic cell Science not biology

Answers

B and C!! Hope this helps

Answer:

C

Explanation:

Prokaryotic cells do not have a nucleus.

What are air masses giving brainliest and 15 points

Answers

Answer:

A body of air with horizontally uniform temperature, humidity, and pressure.

Hope this helped! :D

THANK YPU SO MUCHHHHFHHDHDD

What two molecules transfer their energy to ATP to provide fuel for cells?
a. carbohydrates and lipids
b. enzymes and nucleic acids
c. amino acids and nucleic acids
d. amino acids and lipids

Answers

Your answer should be B

Need help pls asap question is in the pic.

Answers

i think the answer is c am not sure
C hejsjjshshshshshshshshhs

please help this is the last one and who ever gives a good in there own words good paragraph explanitin will get brain liest

Answers

Answer:

Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes. However, unlike prokaryotic cells, eukaryotic cells have:

1. a membrane-bound nucleus

2. numerous membrane-bound organelles (including the endoplasmic reticulum, Golgi apparatus, chloroplasts, and mitochondria)

3. several rod-shaped chromosomes

Because a eukaryotic cell’s nucleus is surrounded by a membrane, it is often said to have a “true nucleus. ” Organelles (meaning “little organ”) have specialized cellular roles, just as the organs of your body have specialized roles. They allow different functions to be compartmentalized in different areas of the cell.

Or:

Animal Cells

Centrosome:

The centrosome is a microtubule-organizing center found near the nuclei of animal cells. It contains a pair of centrioles, two structures that lie perpendicular to each other. Each centriole is a cylinder of nine triplets of microtubules. The centrosome (the organelle where all microtubules originate) replicates itself before a cell divides, and the centrioles appear to have some role in pulling the duplicated chromosomes to opposite ends of the dividing cell. However, the exact function of the centrioles in cell division isn’t clear, because cells that have had the centrosome removed can still divide, and plant cells, which lack centrosomes, are capable of cell division.

Lysosomes:

In addition to their role as the digestive component and organelle-recycling facility of animal cells, lysosomes are considered to be parts of the endomembrane system. Lysosomes also use their hydrolytic enzymes to destroy pathogens (disease-causing organisms) that might enter the cell. A good example of this occurs in a group of white blood cells called macrophages, which are part of your body’s immune system. In a process known as phagocytosis or endocytosis, a section of the plasma membrane of the macrophage invaginates (folds in) and engulfs a pathogen. The invaginated section, with the pathogen inside, then pinches itself off from the plasma membrane and becomes a vesicle. The vesicle fuses with a lysosome. The lysosome’s hydrolytic enzymes then destroy the pathogen.

Plant Cells

Chloroplasts:

Like the mitochondria, chloroplasts have their own DNA and ribosomes (we’ll talk about these later!), but chloroplasts have an entirely different function. Chloroplasts are plant cell organelles that carry out photosynthesis. Photosynthesis is the series of reactions that use carbon dioxide, water, and light energy to make glucose and oxygen. This is a major difference between plants and animals; plants (autotrophs) are able to make their own food, like sugars, while animals (heterotrophs) must ingest their food.

Like mitochondria, chloroplasts have outer and inner membranes, but within the space enclosed by a chloroplast’s inner membrane is a set of interconnected and stacked fluid-filled membrane sacs called thylakoids. Each stack of thylakoids is called a granum (plural = grana). The fluid enclosed by the inner membrane that surrounds the grana is called the stroma. The chloroplasts contain a green pigment called chlorophyll, which captures the light energy that drives the reactions of photosynthesis. Like plant cells, photosynthetic protists also have chloroplasts. Some bacteria perform photosynthesis, but their chlorophyll is not relegated to an organelle.

Vacuoles:

Vacuoles are membrane-bound sacs that function in storage and transport. The membrane of a vacuole does not fuse with the membranes of other cellular components. Additionally, some agents such as enzymes within plant vacuoles break down macromolecules. Plant cells each have a large central vacuole that occupies most of the area of the cell. The central vacuole plays a key role in regulating the cell’s concentration of water in changing environmental conditions. Have you ever noticed that if you forget to water a plant for a few days, it wilts? That’s because as the water concentration in the soil becomes lower than the water concentration in the plant, water moves out of the central vacuoles and cytoplasm. As the central vacuole shrinks, it leaves the cell wall unsupported. This loss of support to the cell walls of plant cells results in the wilted appearance of the plant. The central vacuole also supports the expansion of the cell. When the central vacuole holds more water, the cell gets larger without having to invest a lot of energy in synthesizing new cytoplasm. You can rescue wilted celery in your refrigerator using this process. Simply cut the end off the stalks and place them in a cup of water. Soon the celery will be stiff and crunchy again.

Answer:

The function of the nucleus is to regulate cell activity.

Explanation:

sorry if this wasnt good enough :(

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