1. What are polymers?
Why are Henrietta Lacks' cells called HeLa cells?
Answer: Some of her cancer cells began being used in research due to their unique ability to continuously grow and divide in the laboratory. These so-called “immortal” cells were later named “HeLa” after the first two letters of Henrietta Lacks first and last name. Since Ms.
Explanation:
Answer:
its short for Henrietta slacks
Explanation:
its a technical term
What type of model is shown?
Answer:
Its A, A structural formula
A 2.0 kg block rests on a rough horizontal table. A rope is attached to the block and is pulled with a force of 8.0 N to the left. As a result the block accelerates at 2.5m/s. The coefficient of kinetic friction between the block and the table
Answer:
0.15
Explanation:
A scientist is investigating cell transport. She observes molecules being transported into a cell through proteins present in the cell membrane. These proteins do not use energy to transport the molecules. Which of the following best explains the type of cell transport observed by the scientist? A. Active transport because membrane proteins were used B. Diffusion because the molecules were entering the cell C. Facilitated diffusion because the proteins were not using energy D. Osmosis because the molecules were moving against the concentration gradient
Answer:
I believe it is C
Explanation:
stay safe:) & have a wonderful day!
Is the water you used this morning the same water that dinosaurs used million years ago
Answer:
Yes, the water we used this morning the samèe water that dinosaurs used million years ago.
What force can stop gravity in a black hole?
Answer:
No force.
Explanation:
If the core is very massive (approximately 2.5 times more massive than the Sun), no known repulsive force inside a star can push back hard enough to prevent gravity from completely collapsing the core into a black hole.
State of matter method used to separate mixtures
Answer:
Mixtures can be separated using a variety of techniques. Chromatography involves solvent separation on a solid medium. Distillation takes advantage of differences in boiling points. Evaporation removes a liquid from a solution to leave a solid material.
Explanation:
Could anyone help me please
Answer:
Gap 1, Synthesis, and Gap 2
Explanation:
Answer:
A, C, and E (Gap 1, Gap2, and Synthesis)
Hope this Helps!
Millions of nonnative cattle in Australia produce a huge amount of dung for decades Australia has imported nonnative dung beetles to help clean up the dung which sentence best explains what would have happened if Australia had not imported the nonnative dung beetles
Answer:
Explanation:
The question is incomplete kindly find below the correct question.
In Australia, millions of nonnative cattle produce a huge amount of dung. For decades, Australia has imported nonnative dung beetles to help clean up the dung. Which sentence best explains why native Australian dung beetles were not doing the job?
A. Cow dung is not part of any native Australian species' niche.
B. Native Australian dung beetles lack a niche in Australia.
C. Cows have no known niche in Australia.
D. Decomposers lack a native niche in Australia.
Answer: B. Native Australian dung beetles lack a niche in Australia.
Explanation:
A niche is a place an organism occupies and the roll they play in an ecosystem. Because the dung beetles were nonnative and imported they have no niche in Australia compare to the Cow who have been settlers this makes it impossible for them to feed on the dungs because they are not use to the dung as source of feed and the dungs could not decompose because no activity was carried out on them.
This will make the cattle avoid feeding in the pasture due to accumulated dung but rather move far for pasture.
Answer:
Cow dung would have piled up in Australia
Explanation:
4. Which of the following is an effect of constructive forces?
A.Landmasses are eroded by water.
B. Landmasses are weathered by ice.
C. Mountains are built up.
D. Mountains are torn down.
Which statement accurately contrasts archaebacteria with eubacteria?
Only archaebacteria live in the human body.
o Only archaebacteria can live in extremely salty waters.
Only eubacteria live in the human body.
Only eubacteria can live in extremely salty waters.
B only archaebactaria can live in extremely salty waters.
only archaebacteria can live in extreme environments period
Answer:
its BExplanation:
which of the following human activities has NOT had an important role in transforming the biosphere to date?
A. Agriculture
B. Industry
C. Development
D. Aquaculture
Answer:
A-Agriculture
Explanation:
hope this helps and have a great day:)
Testosterone and estrogen are unique in that they contain:
Answer:
Testosterone belongs to a class of male hormones called androgens. But women also have testosterone. The ovaries produce both testosterone and estrogen. Relatively small quantities of testosterone are released into your bloodstream by the ovaries and adrenal glands.
Michael looked at a cell through a microscope. He identified a nucleus, chloroplast, and cytoplasm. What kind of cell did Michael observe?
plant cell
Explanation:
that is probably a plant cell. plants have chloroplasts and plants. are eukaryotic cell
Rachel counted all the earthworms in a square meter in her back yard and found she had 36. She went back a week later and found she had only 30.Rachel knew that this was far too few to maintain her lawn so she decided to study the population for a couple of weeks. She found there were 9 worms born per week and 5 died per week. She also found 10 left for a nearby plot of land and 8 worms came from nearby plots during that week. Was the population growing or shrinking
Answer:
Shrinking. Added 12, lost 15.
Explanation:
Write a description of the structure of DNA and a brief summary of Replication
(Own words please!)
Answer:
DNA is something that's in a person it's basically something that's in your body that you can use for mulitpule things.
I need some help pleaseee....
Explanation:
can you take the picture clear because I can't see it sleepy head
Some plant cells are coated in a waxy layer that prevents water loss. This specialization is found in
which plant cells?
internal root cells
cells in the plants reproductive system
internal stem cells
cells on the plant surface
What do you get when a donkey and a horse mate?
Answer:
Mule
Explanation:
e
Donkey + horse = either mule or hinny
Define biotechnology.
Answer:
Explanation:
the exploitation of biological processes for industrial and other purposes, especially the genetic manipulation of microorganisms for the production of antibiotics, hormones, etc.
The molecule that is used as the energy currency (efficient storage of energy) is the blank molecule.
what goes in the blank
Answer:
ATP
Explanation:
Adenosine triphosphate (ATP) can be thought of as a cellular battery. In its high energy state (ATP), when it is charged, it can provide energy for cellular processes. It then loses a phosphate and enters a low energy state, when it is converted to adenosine diphosphate (ADP).
The energy in ATP is stored in the high-energy phosphate bond. ATP acts as a shuttle, delivering energy to areas where energy-consuming activities are taking place. It can quickly provide the energy for this process, and is then converted to ADP.
Limiting factor definition:
Answer:
the definition of 'limiting factor' is...........In ecology, common limiting factor resources are environmental features that limit the growth, abundance, or distribution of an organism or a population of organisms in an ecosystem. ... The limiting factor also causes competition between individuals of a species population. For example, space is a limiting factor.
Explanation:
Was that what you were asking?
HELPPP!!!!!
Of the forms of friction listed above, which would a cyclist experience during this type of race?
1 & ll only
I, II, V
All of the above
Answer:
B. I, II, IV
(the option should be "IV" not "V")
Explanation:
Of the forms of friction listed, a cyclist experience "rolling friction, sliding friction and air resistance" during this type of race.
The rolling friction is known to be the type of friction that when a body rolls on a surface. In this type of friction, there is a force that tends to resist the motion. As the cyclist ride their bicycles, rolling friction occurs between the tyre of the bicycles and the surface of the road.
Sliding friction also occurs during this type of race. It's a contact that actually resists the sliding motion that occurs between two objects - an object and a surface.
Air resistance is the type of friction that occurs when objects move through air. It's a friction between air and an object. In this type of race, air resistance is experienced as the cyclists experience resistance from the air when the ride.
When respiration occurs with oxygen what is it called
Explanation:
When respiration occurs with oxygen then it is called Aerobic respiration.
And
When respiration occurs without oxygen or in absence of oxygen then it is called anaerobic respiration.
How did the advent of farming change how we interacted with the environment?
Answer:
we interact with farming a diffent before and still now we use our hands and tools but what is different they used oxes we use tractors and plows
4. Marijuana may interfere with long term memory
True
False
Answer:
true
Explanation:
Answer:
that could be true
Explanation:
1. List the major ways in which humans are damaging the environment
2. Floods can devastate an ecosystem, however they can also have a positive impact. Please explain the positive impacts major floods can have on the ecosystem.
3. How do seasonal changes in temperature, water availability and sunlight affect ecosystems?
4. Propose 5 ways that humans can help minimise the negative effects both natural events and human impact can have on ecosystems. (Not from google )
Answer:
1.overpopulation, pollution, burning fossil fuels, and deforestation.
2.Returning Nutrients to Soil,
Renewal of Wetlands,
Preventing Erosion and Maintaining Land Mass Elevation,
Recharge and Replenish Ground Water.
Discuss how what you have learned about the respiratory system has caused you to see the environment around you differently. Are there specific activities or environments that you are more likely to avoid now? Explain why (or why not) your thinking about these activities or environments has changed.
Answer:
The respiratory system is directly connected to the external environment. More specifically, the gaseous environment around me can automatically find its way into the internal environment inside me.
The human respiratory system takes in air from the external environment. The purer the air is, the purer the content of its intake.
The system which keeps the lungs clean is found in the trachea which is lined with cells containing hair-like protrusions called cilia and also produces mucus and water droplets. The mucus and the cilia's activities combine to keep air passages hydrated and work together to trap dust, bacteria, and other foreign substances. An example of a foreign substance is heavy smoke from a building on fire. Other examples are cigarette smoke, heavy atmospheric dust such as is found in deserts. When these substances are inhaled, they can temporarily impede the efficiency of the cilia.
So it is important for one to avoid environments whose air is contaminated.
Because a contaminated environment translates to an impeded functioning of the respiratory system and a reduction in the quality of oxygen that reaches the bloodstream.
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The Northern Hemisphere receives more solar energy during one half of
the year than it does during the other half of the year. Which of the
following happens during the year to explain this?
Answer:
C
Explanation:
The Earth orbits the sun while rotating on its axis, meaning that the Sun hits some places at different times than others.