Answer:
18 times
Explanation:
Heart rate = 0.3 cycles/s
Heart rate = [tex]\frac{number of cycles}{time}[/tex]
number of cycles = heart rate x time
But, 1 min = 60 seconds
⇒ number of cycles = 0.3 x 60
= 18
Thus, the number of times that the Mollusk's heart beat in 1 min is 18.
The inactive state of a seed or other plant part when conditions are not right for growth is ___.
1. Phototropism
2. Dormacy
3. Gravitropism
How is the carbon cycle related to sedimentary rocks?
Answer: Heat and pressure compress the mud and carbon over millions of years, forming sedimentary rock such as shale. ... The heated rock recombines into silicate minerals, releasing carbon dioxide. When volcanoes erupt, they vent the gas to the atmosphere and cover the land with fresh silicate rock to begin the cycle again.
Explanation:
REWORD THIS IN YOUR OWN WORDS!
They are eukaryotic, which means they have a nucleus. Most have mitochondria. They can be parasites. They all prefer aquatic or moist environments.
Answer:
Eukaryotic organisms have no nucleus and prefer aquatic or moist environments. Interestingly, some are parasites, and some do not have mitochondria.
Explanation:
You may need to add some more sentences to better link these two together.
difference between mycoplasma and l form bacteria
Answer:
L-form bacteria are distinct from mycoplasmas, because Mycoplasma spp. do not originate from bacteria that normally possess a cell wall. ... Some of these bacteria remain as CWDB (stable L-forms), whereas others revert back to possession of a cell wall (unstable L-forms).
Explanation:
One theory of early life on Earth states that the first life forms did not use oxygen for respiration and were unable to make their own food. Based on this theory, which types of organisms were most likely present? *
A. aerobic, autotrophic bacteria
B. anaerobic, autotrophic bacteria
C. aerobic, heterotrophic bacteria
D. anaerobic, heterotrophic bacteria
The theory of primitive life on Earth is fascinating, there are countless scientists who try to explain how life began on Earth, but to be able to answer how the first living beings were we need to know that.....
Oparin and Haldane hypothesis
The most widely accepted hypothesis about the origin of life today is the Oparin and Haldane hypothesis. According to this idea, the primitive Earth would be constituted by
AmmoniaHydrogenMethane and Water vapor,which are constantly expelled by volcanic activities. The condensation of this water vapor gave rise to a cycle of rains, as these, upon reaching the still hot surface of the Earth, evaporate again, thus initiating a new cycle.
Through the action of the sun's ultraviolet radiation and constant electrical discharges, the elements present in the atmosphere began to react, giving rise to the first organic compounds, called amino acids. The rains carried these compounds to the primitive oceans, which formed when the Earth's surface cooled, allowing water to accumulate on the surface.
In primitive oceans, these amino acids joined together, forming protein-like compounds (proteinoids), and then, after further reactions, these gave rise to coacervates. These became more stable and complex, controlling their own chemical reactions and being able to self-duplicate, thus giving rise to the first living beings.
Heterotrophic and autotrophic hypotheses
Some authors believe that the first organisms would be heterotrophs. This was due to the fact that the first organisms were simple, lacking the structure to carry out a more complex biochemical process to obtain food, for example, photosynthesis. Thus, these organisms fed on simple organic matter, presenting as the end product of this process carbon dioxide (CO2) and alcohol (C2H5OH), that is, the first living organisms would be fermentors.
With this information, we can say that the first living being on the planet was anaerobic, heterotrophic bacteria.
D. anaerobic, heterotrophic bacteria
There have always been many theories about the origin of life on the planet, but this is the most acceptable among scientists, but it is necessary to know that they are not yet fully proven, so they continue as a theory.
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DNA is what type of macromolecule?
Answer:
Nucleic Acid
Explanation:
DNA is made up of the nucleic acids Adinine, Thymine, Cytosine, and Guanine.
Which term best describes a group of cells that are similar in composition and function together to perform a task?
Answer:
B. Tissue
Explanation:
Tissue is defined as " a group of similar cells that have a common function."
The difference between z and 8
Within a population, the different colors and patterns of eyes are _____. A. the results of chance mutations B. reflections of the colors in the environment C. produced in anticipation of environmental forces D. created by the environmental effects on the phenotype
Answer: the correct option is B.
reflections of the colors in the environment
Explanation:
This is because the environment causes different reflections of color. Fir example white light reflect colors, it will absorb all other colors except with.
The environment serves a a medium for color reflection and this has lead to different color and patterns in population. People have eye pattern and color base on their surrondings, what the surronding is made off influence the color and patterns.
The influence of greenhouse gases on temperature is called the greenhouse effect. Based on what you have seen, how do greenhouse gases affect the heat flow into and out of Earth’s atmosphere?
Answer:
it effects the ozone which keeps out a majorty of the the suns raditon
Answer:
Greenhouses gases affect the heat flow into and out of (mostly out of) the Earths atmosphere by trapping heat inside the atmosphere and raising global temperature over time.
Explanation:
Bruce Wallace (1963) established a laboratory population in which the recessive allele lt was at a frequency of 0.5. He propagated the population for 10 generations, and determined the frequency of lt each generation.
a. True
b. False
Answer:
a. True
Explanation:
Bruce Wallace was a professor emeritus of genetics who performed many population studies. He worked in 1958 at the University of Cornell as a professor of genetics. In 1963, he performed a population study wherein the recessive allele It was at a frequency of 0.5. The population was propagated for 10 generations and the frequency of It for each generation was determined.
The result of this study showed that lt/lt died without reproducing, whereas, individuals with genotype +/+ were normal.
help help help !!!!,
Answer:
#1= d #2=c
Explanation:
Sorry If incorrect
Answer: 1st one: b or d,
2nd: c
Explanation:
You can physically see the of a tralt___but not the___
phenotype
genotype
please help
this is any multicellular living thing that obtains energy from sunlight or makes it own food
= ??
Help so easy with number 5
Scientists were investigating a pond of water found deep in a South American cave along the Yucatan Penisula. They obtained many samples which they took back to their lab. After much testing, they found that the water has an acidic pH of 3. Another much more surprising discovery was that a new species of a unicellular organism was present in the samples. The organism was observed with a microscope and found to not have a bound nucleus or organelles. To which Domain would this organism be classified?
Group of answer choices
Bacteria
Protista
Eukarya
Archaea
Answer:
Bacteria
Explanation:
Bacteria is the correct answer because it lacks organelles or a nucleus.
Protista is not the correct answer because they have organelles and a nucleus.
Eukarya is not the correct answer because they have organelles and a nucleus.
Archaea is not the correct answer because they have organelles and a nucleus.
Bacteria is the correct answer because it lacks organelles or a nucleus. Protista is not the correct answer because they have organelles and a nucleus.
What is Bacteria?Eukarya is not the correct answer because they have organelles and a nucleus. Archaea is not the correct answer because they have organelles and a nucleus.
Microbes known as bacteria have simpler cell structures than many other types of creatures. One DNA loop serves as their command center and houses all of their genetic data. Instead of a nucleus, some bacteria have an additional ring of genetic material called a plasmid.
Genes that offer the bacterium a competitive edge over other bacteria are frequently found in the plasmid. For instance, it might have a gene making the bacterium immune to a specific antibiotic.
Therefore, Bacteria is the correct answer because it lacks organelles or a nucleus. Protista is not the correct answer because they have organelles and a nucleus.
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What forces are acting on a dropped book that falls to the ground?
A Gravity Only
B Gravity and Air Resistance
C Air Resistance only
D Friction only
HURRY PLS
Charles Darwin not only proposed that species could change over time, but he also described a process by which these changes could occur. What was that process?
Answer:
Charles Darwin had a theory that states that evolution happens by natural selection. Individuals in a species show variation in physical characteristics. ... As a consequence those individuals most suited to their environment survive and, given enough time, the species will gradually evolve.
The theory of natural selection was proposed by Charles Darwin. Darwin postulated that species could change over time.
What is the theory of natural selection?The adaption by organism according to the surrounding environment is natural selection. It drives evolution.
Individuals in a population vary naturally. It means they are all different in some ways.
This variation means that some individuals have traits that suit better to the environment as compared than others.
This causes the species to change over time.
Thus, the process by which these changes take place is natural selection.
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Question 16 (2 points)
If a wave is traveling at a constant speed, and the frequency increases, what would happen to the wavelength? (2 points)
Oa
It would increase.
Oь
It would decrease.
Ос
It would remain constant.
Od
It would drop to zero.
Answer:
A
Explanation:
When frequency increases so does the wavelength
Answer:
The correct answer is B. It would decrease.
Explanation:
I chose answer A. on my test and got it wrong. The correct answer was shown to me as B. Good Luck!!
Question 4
What would be the genotype and phenotype of the baby produced by the
following fertilization event? (Key: G = yellow and g = green)
G
meets
g
A. The genotype would be green and the phenotype would be GG.
B. The phenotype would be green and the genotype would be gg.
C. The genotype would be Gg and the phenotype would be yellow.
D. The phenotype would be gg and the genotype would be yellow.
Answer: D. The genotype would be Gg and then phenotype would be yellow
Explanation:
Describe the relationship
between chlorophyll and the
color of plants.
Answer:
Plants absorb both red and purple light waves, however because purple wavelengths are shorter, they contain more energy. The green pigment involved in photosynthesis is chlorophyll . Chlorophyll is green in appearance because it absorbs red and blue light, making these colours unable to be seen.
Done!!!
Acclimatization does not change ___________, so traits that arise via acclimatization cannot be passed on to offspring. On the other hand, an adaptation CAN be passed on to offspring, which means that adaptations can drive________.
If an individual coral colony can __________to the warming water, this means it might _________as the ocean continues to warm. Individuals that cannot do it will___________. It is important for these changes to__________. Natural selection ________corals that have these characteristics that enable them to tolerate warm water. So, over time, coral populations will __________to warm water.
Answer:
Acclimatization does not change Genotype so traits that arise via acclimatization cannot be passed on to offspring. On the other hand, an adaptation CAN be passed on to offspring, which means that adaptations can drive Evolution.
If an individual coral colony can Acclimatize to the warming water, this means it might Survive as the ocean continues to warm. Individuals that cannot do it will Die. It is important for these changes to Become inherited. Natural selection will favor corals that have these characteristics that enable them to tolerate warm water. So, over time, coral populations will Adapt to warm water.
Acclimatization does not change genotype so traits that arise via
acclimatization cannot be passed on to offspring. On the other hand, an
adaptation CAN be passed on to offspring, which means that adaptations can
drive evolution.
If an individual coral colony can acclimatize to the warming water, this means
it might survive as the ocean continues to warm. Individuals that cannot do it
will die. It is important for these changes to become inherited. Natural
selection favors corals that have these characteristics that enable them to
tolerate warm water. So, over time, coral populations will adapt to warm
water.
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Scientists find that the average time for one complete cell cycle is 22 hours. What differences would they expect to see in cancerous chicken cells?
Answer:
the would have a different visual
Explanation:
The sum of all chemical reactions that take place within an organism is
known as:
Answer:
metabolic reactions .
Explanation:
hope this will be helpful to you.
What affect do you think a locust swarm would have on the flow of energy through the food web when they pass through an area?
which single factor would most likely account for this trend?
Answer:
muscles?
Explanation:
what trend? can explain or this not serious Question?
Why is it hard to model the inheritance of more than one gene?
Answer:
because all of them are different?
Explanation:
When farmers clear a forest and plant crops, how will the biodiversity of the land be affected?
The biodiversity will decrease with higher populations of fewer species,
The biodiversity will increase with lower populations of more species.
The biodiversity will decrease with lower populations of more species.
The biodiversity will increase with higher populations of fewer species.
Answer:
The biodiversity will decrease with lower populations of more species.
Explanation:
This is because clearing a forest destroys habitats and therefore kills animals as they have no shelter, no food source and no water source.
Little brown bats are a species of bat in the genus Myotis. Little brown bats are extremely common in North America, where they roost in houses, buildings, or trees. In the winter, the bats hibernate in caves, unused mines, or other similar locations. Unfortunately, little brown bats are threatened due to white-nose syndrome. Given these terms related to bats, match the term to the level of biological organization.all little brown bats
Answer: population: The bat species of North America
community : a little brown bat
organism: bat
Explanation:
Here, the population of the bat resides in the North America in the houses, trees and buildings they hide in the caves in winters for hibernation. Inside the cave they form a bat community here the organism is bat. These bats are threatened in numbers due to white nose syndrome. The white nose syndrome is the fungal growth on the wings and muzzles of the bats. The fungus affects the bats during hibernation, when the bats trying to save their energy by reducing their metabolic rate. It is transferrable from one bat to another thus can infect the entire population of bat. It is a dangerous disease.
what do you notice when moving the slide around the stage?
Answer:
It's the same there is no change.
