Answer: The chemical origin of life refers to the conditions that might have existed and therefore promoted the first replicating life forms. It considers the physical and chemical reactions that could have led to early replicator molecules. All life is composed mainly of the four macromolecule building blocks: carbohydrates, lipids, proteins, and nucleic acids. The interactions of different polymers of these basic molecule types make up the majority of life's structure and function.
2. Which statement is NOT part of the cell theory?
O Cells come from existing cells
O Cells are the basic unit of life
O Cells are all the same on the inside
OLiving organisms are made up of one or more cells
Answer:
O Cells are all the same on the inside
the impact of extinction to the environment
Answer:
Changing systems are inevitable but likewise bring harsh and even uncontrollable effectsExtinction is especially harmful because of the concept of mutual or coexistence theorems in which certain animals depend on others We will examine the food chain: Say that grasshoppers go extinct and the lizards that eat them exclusively now have no food source. That effect transcends into a higher order as it climbs up the food ladder. Effectively these said lizards could have been controlling the bug population and effectively the grasshoppers controlled smaller micro organisms which now are left to their own devices given the extinction of the grasshoppers.effectively those microorganism can damage ecosystems and dramatically change the composition or animals and vegetation that exist in said area.Answer:
1) it'll affect the chain reactions in the whole ecosystem and therefore, have a big effect on the environment.
2) if this happens then humans may lose the source of medicines as well, thus humans will be hit by a disease and there would probably be no cure, hence again affecting the biodiversity.
The endocrine system regulates the body through hormone release. Like the nervous system, what does the endocrine system help maintain?
A. homeostasis
B. reflexes
C. chemicals
D. neurons
Answer:
How is the endocrine system related to the nervous system in terms of its regulatory activity?
For one, the endocrine system uses chemical signaling (hormones, produced by glands) while the nervous system uses electrical signaling (neural impulses). The signal transmission of the nervous system is fast because neurons are interconnected, but the functions are more short-lived.
Explanation:
All living things, including cells, reproduce. Under the right conditions, the number of
yeast cells in a population can double every 20 seconds. Like all organisms, yeast
must also compete for available resources. The graph shows how a population of
yeasts changed over time. The yeast were grown in a glass jar that contained a warm
sugar water solution. Which of the following best explains why the population of yeast
cells began to rapidly decrease after 40 minute?
The yeasts became infected
and began to die.
As the yeast population
Increased, their food source
decreased.
The water was too warm for
the yeasts causing them to
die.
As the yeasts became older,
they just stopped reproducing
Answer:
as the yeast supply increased food source decreased...
Explanation:
overpopulation of the yeast population would decrease, their food source decreased because, just like any population, any decrease in a food source means a decrease in life...
When is mitosis complete
A. When chromatids are produced
B. When spindle fibers form
C.when two nuclei have formed
D.when organelles are produced
Note:My braincells left me :(
Answer:
My answer is generic. The process of Mitosis is over when the next stage begins.
Explanation:
I dont know the answer because i didnt recognize the 4 solutions. So I turned the solution into the answer.
Answer:when two nuclei have. Formed
Explanation:
Sasha used the Internet to find and print images of the esophagus, stomach, liver, and intestines. She then arranged these structures to show how they are organized inside a human body. What sequence of organization was Sasha demonstrating?
a. cells - tissues
B. tissues - organs
C. organ systems - organism
D. organs - organ systems
Answer:
d
hope this is right and good luck
Carrots that have been cut into pieces have a shorter
shelf life than whole carrots. Explain this observation
using factors that affect rate of reaction.
Science 10
at what level does natural selection occur?
Answer:
The hierarchy of selection. We most typically think of natural selection working at the level of the individual, favoring those better at leaving behind more individual descendants. However, with a little imagination, we can see how natural selection might work at other levels of biological organization as well.
Explanation:
If there is a solar eclipse, we see a shadow because the sunlight is _______________.
none of the above
absorbed by moon
refracted by moon
reflected by moon
Answer:
refracted by moon
Explanation:
Answer:
reflected by moon would probaly be the answer.
Explanation:
Sometimes, the Moon passes between the Earth and the Sun. The Moon blocks the light of the Sun and a shadow of the Moon is cast on the Earth's surface. This is an eclipse of the Sun, or a solar eclipse.
: Was the increase in the average beak depth caused by an increase in large-beaked finches or a decline in small-beaked finches?
Answer:
The increase in the average beak depth caused by both an increase in large-beaked finches and by a decline in small-beaked finches
Explanation:
The increase in the average beak depth is caused by both an increase in large-beaked finches and by a decline in small-beaked finches. All the small-beaked finches got disappeared. As a result, only large-beaked finches were left. The drought decreased the number of seeds such that large-beaked finches could eat the larger seeds to survive.
STATION #2
Where is DNA located within the cell?
Your answer here
Nucleus
Mitochondria
cytoplam
Ribosoma
Golgi apparatus
Answer:
nucleas
Explanation:
i looked it up and we had a unit on this in school ,not that I actually remembered anything they taught me :P
Which of the following is true?
A. The reactions for cellular respiration and
Photosynthesis are the same
B. The products of photosynthesis are the rectants in
cellular respiration.
C. The products for cellular respiration and
Photosynthesis are the same.
D. Cellular respiration and Photosynthesis are not
interrelated
Answer:
B. the products if photosynthesis are the rectants
4.What term is used to identify that first fertilized egg?
O egg
O body cell
O gamete
O zygote
Answer:
I believe its the zygote
Answer:
zygote
Explanation:
4th option thankyou
explain how competition for biotic and abiotic factors, such as quantity of light water or food can affect the size of populations
Answer:
When there is a limited supply of water or food, organisms must compete for these resources in order to survive. Some will get to eat/drink but some others might not. As a result those organisms may die from lack of food/water, therefore decreasing the size of the population.
which statement best completes the diagram
A.most people are jewish
B. most people speak greek
C.most people live on farms
D.most people practice islam
Answer:
A
Explanation:
1. Determine hormones with external and internal secretion.
2. The nervous system and the hormonal system control the sending of messages to different organs of the body, describe the difference between them.
3. Explain the role of thyroxine in the metabolic processes of our body.
4. Describe the role of insulin in regulating blood sugar. What are the effects of adrenaline in the body?
5. Distinguish the role of testosterone and estrogen in human sexual development.
Answer:
yeah
Explanation:
Thyroxine is the main hormone secreted into the bloodstream by the thyroid gland. It plays vital roles in digestion, heart and muscle function, brain development and maintenance of bones.
Alternative names for thyroxine
T4; tetraiodothyronine; thyroxin
What is thyroxine?
Thyroxine is the main hormone secreted into the bloodstream by the thyroid gland. It is the inactive form and most of it is converted to an active form called triiodothyronine by organs such as the liver and kidneys. Thyroid hormones play vital roles in regulating the body’s metabolic rate, heart and digestive functions, muscle control, brain development and maintenance of bones.
How is thyroxine controlled?
The production and release of thyroid hormones, thyroxine and triiodothyronine, is controlled by a feedback loop system that involves the hypothalamus in the brain and the pituitary and thyroid glands. The hypothalamus secretes thyrotropin-releasing hormone which, in turn, stimulates the pituitary gland to produce thyroid stimulating hormone. This hormone stimulates the production of the thyroid hormones, thyroxine and triiodothyronine, by the thyroid gland.
This hormone production system is regulated by a feedback loop so that when the levels of the thyroid hormones (thyroxine and triiodothyronine) increase, they prevent the release of both thyrotropin-releasing hormone and thyroid stimulating hormone. This system allows the body to maintain a constant level of thyroid hormones in the body.
What happens if I have too much thyroxine?
The release of too much thyroxine in the bloodstream is known as thyrotoxicosis. This may be caused by overactivity of the thyroid gland (hyperthyroidism), as in Graves' disease, inflammation of the thyroid or a benign tumour. Thyrotoxicosis can be recognised by a goitre, which is a swelling of the neck due to enlargement of the thyroid gland. Other symptoms of thyrotoxicosis include intolerance to heat, weight loss, increased appetite, increased bowel movements, irregular menstrual cycle, rapid or irregular heartbeat, palpitations, tiredness, irritability, tremor, hair
How could you use negative reinforcement to stop a dog from biting when it plays?
Answer:
Simple. You don't.
Explanation:
Not gonna be mean to my dog. No way.
Answer: give him a snack instead
Explanation: just don’t bite him back, your a human being at all
What do the planets Earth and Mars have in common?
A Presence of an atmosphere and a gas surface composition
B Presence of an atmosphere and a rock surface composition
C Presence of moons and rings
D Presence of rings but no moons
Answer:
B Presence of an atmosphere and a rock surface composition
I the otter , sea urchin , kelp community , what trophic level is the kelp ?
A. Producer
B. Primary consumers
C. Secondary consumers
D. Tertiary consumers
How can we articulate extinct animals in a hypothesis state
Answer:
The species recognition hypothesis explains exaggerated structures in non-avialan dinosaurs better than sexual selection does
Describe the relationship between DNA,
chromosomes, and genes
Answer:
★ Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.
Explanation:
Hope you have a great day :)
Help will mark Brainliest!!!
Answer:
it is b
the principle here is redundancy, if you need hammers at your work site to do something important you should make sure you have more than one around
same thing here only you don't lose or break the hammer the genes are mutated and you lose that amino acid
Explanation:
ill mark brainliest!
What does a model of the carbon cycle show?
The amount of Earth’s carbon increases.
The amount of Earth’s carbon is constant.
The amount of Earth’s carbon decreases.
The amount of Earth’s carbon cannot be determined.
Answer:
The amount of Earth’s carbon increases.
Explanation:
Changes that put carbon gases into the atmosphere result in warmer temperatures on Earth. This diagram of the fast carbon cycle shows the movement of carbon between land, atmosphere, and oceans. Yellow numbers are natural fluxes, and red are human contributions in gigatons of carbon per year.
Love the ouma pfp
Which of the following is a density-independent limiting factor?
O struggle for resources like food
O disease
O a yolcanic eruption
A volcanic eruption is an independent factor of density. Because it is not related in any way to the population, which is part of a feedback system. Hope this can help you! .
Explain how and why the walls of the ventricles differ in thickness.
and between
Answer:
The ventricles of the heart have thicker muscular walls than the atria. This is because blood is pumped out of the heart at greater pressure from these chambers compared to the atria. ... This is due to the higher forces needed to pump blood through the systemic circuit (around the body) compared to the pulmonary circuit.
Explanation:
The Human Heart — PT Direct
HELP Please if you can: whitch kind of plant could scientist be observing A. liverword B. club moss C. moss D.hornword
Answer:
It looks like moss I think wood would look harder instead of liquid like
Explanation:
“The rest is lost largely through metabolic processes as heat.”
How can I word that sentence differently?
pls help
Answer:
The rest is lost generally through metabolic cycles as warmth.
Hope this helps you. Do mark me as brainliest.
I'm asking this out of personal curiosity, not for school. but it's still for educational purposes kinda, so I hope it's okay.
If a flower is wilted, but not totally dead and withered yet, is the flower dead and it's dead flower body is in the process of decomposing, or is the flower like in the flower stage of being an old person, it lived and now it's old, but not dead yet?
Here's an example of the flower stage I mean. ^-^
Which is the most common safety rules to follow before leaving the lab
Answer:
The answer would be to always wash your hands!
Answer:
The most common safety rules to follow before leaving a lab are the following:
Explanation:
Wipe down all equipment, materials, etc with disinfectant wipes.
Throw out any trash or biohazardous materials.
Store papers, documents, and lab equipment such as microscopes and goggles back where they are supposed to be stored.
Make sure to turn off all equipment so they aren't running while you or others aren't there.
Hope this info helps and please mark brainliest!Explain why the use of peat is harmful to the environment
Answer:
Peatlands store a third of the world's soil carbon, and their harvesting and use releases carbon dioxide, the major greenhouse gas driving climate change. The biggest environmental risk from peatlands is if they catch fire, which happened spectacularly in 2015 in Indonesia on land cleared for plantations.