Who first used the word “atomos” to describe the smallest unit of a substance?
Answer:
Democritus
Explanation:
Democritus was a Greek philosopher and is still remembered for his contribution towards the atomic structure of the universe. He first described the smallest unit of a substance and named it as "atomos".
Answer:
Democritus is correct
Explanation:
List the characteristics that describe the plant kingdom?
They are eukaryotic and multicellular.
Their cells have cellulose walls.
Majority have transport system.
They have photosynthesis hence autotrophic.
Reproduction is both asexual and sexual.
They show alternation of generation.
What does the thyroid gland, shown in the image below, do?
(Pineal, Hypothalamus,
and Pituitary glands)
Thyroid
Thymus
Adrenal
Pancreas
Ovaries (2)
Tostos (2)
A. Releases a hormone if blood calcium levels get too high
B. Releases hormones to regulate the endocrine system
C. Regulates the pituitary gland
D. Releases insulin if blood sugar levels get too high
The thyroid gland secretes the thyroid hormones that releases a hormone if blood calcium levels get too high and in this way regulats the calcium level in the blood that is present in option A.
The thyroid gland plays a crucial role in regulating metabolism, which is the process by which the body converts food into energy. Metabolism is a complex process that involves various chemical reactions that take place within the body's cells. The thyroid hormones T4 and T3 are responsible for regulating many aspects of metabolism such as thyroid hormones increase BMR, which means that the body burns more calories even when one is not doing any physical activity.
learn more about the thyroid hormones here.
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describe the interrelationships between the skeletal systems and the integumentary, muscular, cardiovascular and urinary systems
Answer:
Without the skeletal system holding the body together and supporting structure, the muscular, cardiovascular, and urinary systems would be crushed under the impact of our body mass.
Explanation:
What would happen if a populations chose their mates randomly?
A. Allele frequency would be constantly changing at random
B. The allele frequency would stay relatively the same over time because there are no traits that are being selected for.
C. Randomly mating allows the most beneficial traits to be passed on because more individuals are going to select for them.
D. Allele frequency would begin to favor the dominant trait.
Answer:
B. The allele frequency would stay relatively the same over time because there are no traits that are being selected for.
Explanation:
Like recombination, non-random mating can act as an ancillary process for natural selection to cause evolution to occur. Any departure from random mating upsets the equilibrium distribution of genotypes in a population. This will occur whether mate selection is positive or negative assortative.
Which can more efficiently supply nutrients and
expel waste products?
A. larger cells
B. smaller cells
C. cells with lower surface area to volume ratio
D. cells shaped like a cube
Answer:
Smaller Cells
Explanation:
Basically, small cells have larger surface area but smaller volume, its vice versa for larger cells.
Not to forget that the functions of a cell are related to the diffusion, osmosis and active transport movement.
Factors to consider for a faster diffusion/ osmotic movement includes:
Surface Area
Size of molecule
Difference in concentration gradient
Temperature
Distance
So as per the factors, when there is a larger surface area, the rate diffusion/ osmosis increases hence increasing its efficiency.
If an average cell in an organism lives for 40 hours, how much time would it spend in each of the phases?
Answer:
A cell spends most of its time in (M phase) or metaphase, this is when the cell divides. The Ameba sisters videos can help you.
Explanation:
6) What term describes an educated guess that needs to be tested by
experimentation?
Hypothesis
Gravity
Biology
Scientific Law
Theories
List two functions of the skeleton (2)
Answer
The skeletal system works as a support structure for your body. It gives the body its shape, allows movement, makes blood cells, provides protection for organs and stores minerals. The skeletal system is also called the musculoskeletal system.
Explanation:
Please help, I need it fast!!!
Answer:
Question 1
B
Question 2
A
Question 3
i don't know this answer, sorry
Question 4
C
Compare all the organisms. What trend do you
see?
Relative Proportions (%) of Bases in DNA
Organism
А
T
G
С
Human
30.9
29.4
19.9
19.8
The proportions of DNA bases vary greatly
among organisms.
The proportions of DNA bases are similar in
closely related organisms, but different in
organisms that are not closely related
The proportions of DNA bases are similar
among all organisms.
Chicken
28.8
29.2
20.5
21.5
Grasshopper
29.3
29.3
20.5
20.7
Sea urchin
32.8
321
17.7
173
DO NE
Wheat
27.3
27.1
22.7
22.8
Yeast
31.3
32.9
18.7
17.1
का
E Coli
24.7
23.6
26.0
25.7
)
Answer:
28.8 i got it right in the test :)
where does pollination takes place in the flower
Answer:
To be pollinated, pollen must be moved from a stamen to the stigma. When pollen from a plant's stamen is transferred to that same plant's stigma, it is called self-pollination. When pollen from a plant's stamen is transferred to a different plant's stigma, it is called cross-pollination.
Explanation:
Which of the following can cause evolution to occur? (Select all that apply)
Mutation
If organisms choose a mate for a specific reason
People moving into or out of an area
If the population shrinks
Answer:
MutationIf organisms choose a mate for a specific reasonPeople moving into or out of an areaIf the population shrinksExplanation:
These factors are the "forces of evolution." There are four such forces: mutation, gene flow, genetic drift, and natural selection.
These are the factors that can cause evolution to occur:
MutationIf organisms choose a mate for a specific reasonPeople moving into or out of an areaIf the population shrinksWhich process produces haploid cells?
A. Meiosis
B. Mitosis
Answer:
the answer is: A
meiosis
The right answer is A Meiosis
What was the environmental factor MAINLY responsible for the changes which were seen in the graph in Figure 3?
Answer:
my answer
Explanation:
the sun is rising in noon and at it's very height, carbon-dioxide levels are LOW because the more sunlight plants get, THE MORE PLANTS CONVERT SUNLIGHT WITH CARBON DIOXIDE INTO OXYGEN AND REMOVE CARBON DIOXIDE FROM ATMOSPHERE
Answer:
it seems that there aren't any factors that can really support it but i would say that the percent seems to lower because of the temp change
Explanation:
Microbeads are tiny, smooth, plastic spheres found in common household products such as facial soap. These beads, measuring from 0.0004 to 1.24 mm, roughly the size of some fish eggs, are too small to be removed by water treatment systems. Thus, they end up in rivers, lakes, and other bodies of water. The accumulation of these microbeads is an environmental concern for aquatic biologists because microbeads
(1) make the lakes and rivers cloudy and dirty, affecting their appearance
(2) may stick to some household water pipes, preventing drainage problems
(3) could be mistaken for food by some species, working their way up the food chain
(4) could clog fishing nets, affecting the ability of fishermen to catch fish
Answer:
(3) could be mistaken for food by some species, working their way up the food chain
Explanation:
Microbeads, such as other microplastics, can affect wildlife in many ways, but mostly by
IngestionIntroduction and transference in the trophic webInteraction with other contaminantsMicroinvertebrates, bacteria, and viruses colonize these microplastics and can be transported long distances.Organisms like mollusks, crustaceans, fishes, birds, turtles, among many others, might confuse these elements with food and eat them. Microbeads might float or accumulate in sediments and be ingested by different benthonic species. The ingestion of microbeads by inferior links in the trophic web means a direct entrance in the trophic web where many superior links are affected too while feeding with already contaminated prey.
The ingestion of microbeads can cause a significant impact on the growth, development, and reproduction of freshwater and seawater species.
Microbeads, like other microplastics, characterize for their durability in time and resistance, which means that the ones that are already in the oceans and rivers will last there for centuries.
Humans use special body parts for functions such as breathing and breaking down food. Some living things, such as bacteria, are too small to perform these functions. True false Submit
Answer:
False
Explanation:
Bacteria do not have organs like humans. However, bacteria have specific structures to perform certain essential functions.
Among the bacteria, there are the respirators, which perform aerobic cell respiration, where oxygen gas is the final acceptor of hydrogen ions. Also, some bacteria perform anaerobic cell respiration. In those, oxygen gas is replaced by other molecules, which function as hydrogen acceptors such as nitrates or sulfates. Bacteria respiration occurs through the mitochondria.
In addition, bacteria can have different forms of "obtaining food"
Some can obtain their food through photosynthesis, degrading organic compounds. Other types of bacteria use the energy released in oxidation reactions of inorganic compounds, such as those that participate in the nitrogen cycle.
Finally, there are saprophagic bacteria, which obtain food from corpses and the remains of living beings, and the parasite ones, which find this food in the tissues of living beings, often causing them illness.
The kidneys are organs that are involved in which process in mammals?
A synthesis
B excretion
C respiration
D transport
Answer: B
Explanation: The kidneys are part of the urinary system. Urinating is excreting. (God that word is so weird)
Domain is the least inclusive group of all of the categories.
A. True
B. False
Answer:
B. False
Explanation:
Within this hierarchy, living things are organized from the largest, most-inclusive group (domains) down to the smallest, least-inclusive group (called species). Domain: Domains group organisms by fundamental characteristics like cell structure and chemistry. The three domains are Bacteria, Archaea, and Eukarya.
Answer:
B. False
Explanation:
Domain is not the least inclusive group of all of the categories. The three domains are Bacteria, Archaea, and Eukarya.
When a single species, such as ancestor of the Galapagos finches, has evolved into several different forms that live in different ways we say that_ has occurred.
A.adaptive radiation
B.coevolution
C.mass extinction
D.punctuated equilibrium
Answer:
A
Explanation:
In evolutionary biology, adaptive radiation is a process in which organisms diversify rapidly from an ancestral species into a multitude of new forms, particularly when a change in the environment makes new resources available, alters biotic interactions or opens new environmental niches.
What food provides for our cells
Answer:
“All four diets,” states Leung, “emphasize eating plenty of fruits, vegetables, whole grains, and plant-based protein and limiting consumption of sugar, sodium, and red and processed meat.”
Explanation:
Hope It helps
Evidence overwhelmingly suggests that all life on earth is related.
A. TRUE
B. FALSE
Answer:
true
hope helpful answer
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Why is the tortoise breeding program on Santa Cruz Island important?
O A. The tortoise population has increased.
O B. No one knows how long a tortoise's lifespan is.
O C. No one knows how two tortoise species became extinct.
O D. The tortoise population has decreased.
Answer:
The answer to the question is option D
Which term refers to the energy an object has due to its position?
Answer:
Potential Energy.
Explanation:
Potential energy, stored energy that depends on different parts of the system's relative position. When compressed or stretched, spring has more potential energy.
A stainless steel ball has more energy than it had when it fell to the world. It is able to do more work in the raised position.
Potential energy is a system's property and not a single body or particle. The earth-consistent system and raised ball, for instance, have greater potential energy as the two are more distinct.
What is phylogeny?
A. How species interact with each another
B. The study of cells.
C. How organisms are related through evolution.
Answer:
Hey mate......
Explanation:
This is ur answer......
C. How organisms are related through evolution...Hope it helps!
Brainliest pls!
Follow me! :)
Answer:
C. How organisms are related through evolution.
Explanation:
Phylogeny is the organisms that are related through evolution.
48. How do matter and energy differ within a
community? Use the words recycle, trophic level,
and flow in your answer. (2.4-2.6)
Answer:
47.. in this case , the longer the food chain , the less energy is available for the rest of the members of the food chain. this indicates that a food chain with 15 trophic levels contain an energy that is insufficient to sustain all its members
48...Matter is cycled through the ecosystem in the biogeochemical cycles. ... However, energy is not recycled, but it flows into the ecosystem through the feeding relationships between the organisms in different trophic levels.
49.. (a) ...Urban development can magnify the risk of environmental hazards such as flash flooding. Pollution and physical barriers to root growth promote loss of urban tree cover. Animal populations are inhibited by toxic substances, vehicles, and the loss of habitat and food sources.
Explanation:
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Which of the following does NOT affect the flow of groundwater through an aquifer ? a. porosity C. gradient b . chemical weatheringd. permeability
Answer:
b . chemical weathering
Explanation:
Chemical weathering is not affected the flow of groundwater through an aquifer but affect by the porosity and permeability. The rate of groundwater flow is controlled by two properties of the rock which are porosity and permeability. Porosity is the percentage of void space in a rock while on the other hand, Permeability is the quality of being permeable means able to be penetrated or passed through by a liquid or gas.
The state of maintaining a stable internal environment regardless of changing external conditions is called
The state of maintaining a stable internal environment regardless of changing external conditions is called [tex]\boxed{ homeostasis }[/tex].
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Which structure(s) are connected to the peripheral nervous system? Select all that apply.
Answer: Here you go
Explanation: nerves (cranial, spinal, and peripheral) and neurons (sensory, motor)
Answer:
A Sense organ, A muscle, And A gland
Explanation:
How does mutation change allele frequency
A. It forces evolution to happen by introducing new adaptions.
B. It causes some individuals to go extinct because their mutations hurt their chance of survival.
C. It adds new genes into the gene pool that didn't exist there before.
Answer:
C. It adds new genes into the gene pool that didn't exist there before.
Explanation:
Mutations add new alleles into a gene pool. It increases the population's genetic variation.