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

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 :(

Which of the following statements is true?

A. Animal cells are able to make their own food.
B. Plants need chlorophyll to make food.
C. Carbon dioxide is a by-product of photosynthesis.
D. Photosynthesis happens in some animal cells.

Explain how cell division is linked to cell theory.

Please look at the picture and answer two boxes

What makes elements and compounds different from mixtures? Elements and compounds-

a). have a constant composition
b). are made of gases
c). will not change when heated
d). conduct electric current

Study the diagram showing the range of temperature in the Earth’s layers.

Graph of Temperature of Earth apostrophe s Layers, showing start depth at 410 kilometers and start temperature at 1,000 degrees Celsius. As depth increases to 6,370 kilometers, temperature increases to over 6,000 degrees Celsius.

What does the diagram show about Earth’s interior?

The outer core is the hottest region.
The mantle is hotter than the outer core.
The continental crust is the coolest region.
The inner core is cooler than the lithosphere.

Please give the correct answer

Why do animal cells not need the same structures vacuoles, cell walls and chloroplas, that plant cells need?

Explain the differences between saturated and unsaturated lipids and give examples of each.

write a mini-essay about Balanced & Unbalanced Forces

What are the base-pairing rules? This is for DNA by the way.

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

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?

The speed of chemical weathering depends on: A:Water freezing B: amount of wind C:Soil depth

Right Answer will be marked brainlest​

Air masses are relatively uniform in ___ and _____

How are plant and animal cells similar? please help i forgot ;^;

Which of these best explains the impact of conduction on the atmosphere?

Water is heated up by the sun's energy.
Water heats up the air around it.
Dense air sinks closer to Earth.
Warm air rises upwards.

Based on the structures of each type, which cell do you think can perform more functions: Human cells or bacterial cells?

Which property of minerals is the least reliable for identifying minerals?
hardness
luster
streak
color

Some trees are adapted to living in cold climates by having modified leaves called needles that help preserve water and prevent freezing. In which biome would these trees most likely to be found?

Group of answer choices

Tundra

Temperate Deciduous forest

Tropical Rain Forest

Taiga

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!!! :((

Need help pls asap question is in the pic.

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

mitosis
cytokinesis
interphase
prophase

PLEASE HELP! i will give the first person to answer brainliest! Just PLEASE help!

Anyone know the definition of Protozoan?

ANSWER ASAP PLZ!!!!!!!!
Which of the following is not true? *

A. Canadians are some of the highest users of resources and energy in the world.

B. The average person in the world has an ecological footprint of 2.2 hectares.

C. At the present rate, the world cannot sustain its present levels of using resources and energy.

D. The amount of resources used in North America is far less than those used in poorer countries.