Answer:
an optical instrument used for viewing very small objects, such as mineral samples or animal or plant cells, typically magnified several hundred times.A microscope is a laboratory instrument used to examine objects that are too small to be seen by the naked eye. Microscopy is the science of investigating small objects and structures using a microscope. Microscopic means being invisible to the eye unless aided by a microscope.
In the investigation where we combined the bath bomb with water, we saw bubbles forming but we did not see an increase in the overall
mass. This happened because....
a - In a closed system, no matter can get in or out so the mass stays the same.
b - In an open system, no matter can get in or out so the mass stays the same.
c - All matter is made of small particles that are too small to be seen.
d - Matter has mass and takes up space. (not this one)
Answer:
C all matter is made of small particles thatcare too small to be seen
Answer:
C
Explanation:
the guy above me said so
Which of these is an autotroph?
A.
mackerel
B.
squid
C.
mollusks
D.
fungi
E.
phytoplankton
Answer:
E.
phytoplankton
Explanation:
The defenition of Autotroph is: "an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide." (Oxford Dictionaries)
As Britannica says, "[...]Like land vegetation, phytoplankton uses carbon dioxide, releases oxygen, and converts minerals to a form animals can use."
Then Wikipedia (I know, not the best source, but it works) says, "Phytoplankton (/ˌfaɪtoʊˈplæŋktən/) are the autotrophic (self-feeding) components of the plankton community and a key part of ocean and freshwater ecosystems."
So, Phytoplankton is an autotroph.
What do mitochondria make?
Answer:
It produces energy for the cell. That energy is called ATP or adenosine triphosphate
Explanation:
Answer:
Mitochondria are membrane bound cell organelles mitochondrion singular that generate most of the chemical energy needed to power the cell's biochemical reactions Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate ATP
Hope this helps!
Which of these scenarios would cause a metal wire to conduct a current?
A.
hooking the wire to one terminal of a battery
B.
moving a magnet near the wire
C.
changing the wire's orientation within a gravitational field
D.
looping the wire into a circle
Answer:
hooking wire to one terminal battery
Why do urban areas experience warmer temperatures compared to surrounding rural areas?
A. Urban areas have more surfaces that absorb and hold heat
B. Urban areas have more surface that reflect and disperse heat
Answer:
a
Explanation:
this is because building sidewalk and parking lots blocks heat coming from the ground from rising into the cold night sky because the heat is trapped on lower levels the temperature is warmer
If long-term higher global temperatures continue to rise on Earth which aspect of the water cycle will most likely occur more rapidly?
Answer:
evaporation
Explanation:
because the more heat that hits the water the more it evaporates
If long term higher global temperature continue to rise on Earth which aspect of the water cycle will most likely occur more rapidly
The correct answer is :
It affects the evaporation and precipitation.
What is water cycle?
It is the cycle process by which water circulates between the earth's oceans, atmosphere, and land. It involves precipitation as rain and snow, drainage in streams and rivers.This precipitate water returns to atmospheric by evaporation.What affects the parts of water cycle?
Change in climate affects the parts of the water cycle to speed up if the temperature increases.Than it leads to increase in the rate of evaporation. Increase in evaporation cause more precipitation.So, evaporation is the correct answer.
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The monarch butterfly stores a poisonous
chemical from the milkweed plant in its
body. This chemical makes other animals
who might eat the monarch butterfly sick.
This is an example of
Answer:
commensalism
Explanation:
44) Which question should one ask when trying to classify an unknown cell as
prokaryotic or eukaryotic?
A) Does the cell reproduce?
B) Does the cell use energy?
C) Does the cell have membrane-bound organelles?
D) Does the cell make proteins from its DNA?
Answer: C) Does the cell have membrane-bound organelles?
Explanation: eukaryotes have a membrane bound nucleus while prokaryotes don’t.
hopefully it correct! it made more sense to me than the other ones :)
give reason an Empty bottle floats on the surface of a water while a bottle filled with water flows inside the liquid
Answer:
The empty plastic bottle floated on water. The bottle filled with water sank because the weight of empty plastic bottle is less than the weight of water displaced it but when the bottle is filled with water its weight becomes more than the weight of water displaced by it.
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Answer: Option B) Wood.
Explanation:
Have a great day.
List 2 positive consequence of natural resource use/consumption
Answer:
In short, raw material extraction and processing always impact on the environment, resulting as they do in soil degradation, water shortages, biodiversity loss, damage to ecosystem functions and global warming exacerbation
Explanation:
Production is the creation, consumption is the use or destruction of resources and fuels
Explain the working of device that uses the principle of gas law
Answer:
Gas laws, laws that relate the pressure, volume, and temperature of a gas. Boyle's law—named for Robert Boyle—states that, at constant temperature, the pressure P of a gas varies inversely with its volume V, or PV = k, where k is a constant.
Explanation:
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scientists may make many genetically identical copies of an organism called _____
A. plasmids
B. hybrids
C. clones
D. mutants
Answer:
C. Clones
Explanation:
Clone definition: An organism or cell, or group of organisms or cells, produced asexually from one ancestor or stock, to which they are genetically identical.
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How much of the cell life is spent in interphase
Answer:
Around 90%
Explanation:
Which blood type can be donated to the largest percentage of individuals?
Answer:
Type O+
Explanation:
how do genes regulate the cell's Chemistry
Answer:
a variety of genes are involved in the control of cell growth and division. the cell replicates itself in an organized, step by step fashion known as the cell cycle.
Explanation:
tight regulation of this process ensures a dividing cell's DNA is copied properly, any errors in the DNA are repaired and each daughter cell receives a full set of chromosomes.
Which of these are examples of negative tropism? (Select all that apply.) Plant roots growing toward a water source due to hydrotropism. Plant leaves and stems growing away from light due to phototropism. Plant leaves and stems growing toward light due to phototropism. Plant roots growing down into the dirt due to gravitropism. Plant roots growing toward the surface of the soil due to gravitropism. Plant roots growing away from a water source due to hydrotropism
Answer:
Plant leaves and stems growing away from light due to phototropism.
Plant roots growing away from a water source due to hydrotropism
Explanation:
When we are talking about tropism, it is refer to as the response or directional growth or response of plants to stimulus.
We have positive and negative tropism.
The negative tropism occur when plants grow away from the stimulus while positive tropism is when plants grows towards the response of stimulus.
Therefore from the question, negative tropism are
Plant roots growing away from a water source due to hydrotropism
Plant leaves and stems growing away from light due to phototropism.
Answer:
Plant leaves and stems growing away from light due to phototropism.
Plant roots growing away from a water source due to hydrotropism
Explanation:
Which molecules contain Thymine?
a.DNA molecules
b.RNA molecules
c.Both DNA and RNA molecules
d.Neither DNA and RNA molecules
Answer:
A. DNA molecules
Explanation:
DNA molecules contain the nitrogenous bases of adenine, thymine, guanine, and cytosine.
RNA molecules have the same bases, except they do not have thymine.
In RNA, thymine is replaced with uracil.
So, since only DNA has thymine, the correct answer is A. DNA molecules
How do sexually reproducing organisms inherit their DNA?*
Half comes from one parent and half comes from the other parent
All of it comes from one parent
None of it comes from either parent
O About 75 percent comes from one parent, and about 25 percent from the other parent
Answer: Half comes from one parent and half comes from the other parent.
Explanation: You have 46 chromosomes and you get 23 from each parent.
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Answer:They can take less baths or do the dishes by hand easy ways to reduce water usage
Explanation:
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The diagram below represents processes involved in human reproduction. Which row in the chart below best identifies the processes represented by the letters in the diagram?
Row (1)
Row (2)
Row (3)
Row (4)
Answer:
I think row 2.
Explanation:
i thinks it's the best answer here.
The process involved in human reproduction is: meiosis occurs in both A and B to produce sperm and egg respectively which after fertilization forms zygote which undergo into differentiation which causes this embryo to transform into human child.
What is reproduction?"Reproduction is the biological process by which new individual organisms or offspring are produced from their parents."What is meiosis?It is a type of cell division which occurs in s ex cells.The number of chromosomes reduced to half and produces four daughter cells.What do you mean by fertilization?"The fusion of male and female gamete is called fertilization."The fusion leads to the formation of zygote.What do you mean by differentiation?"It is a process in which a stem cell alters from one type to a more specialized type."Hence, row (2) represents processes involved in human reproduction.
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solar energy is increasingly being used to replace fossil fuels to generate electricity.
describe the disadvantages of continuing to use fossil fuels to generate electricity
Answer:
Fossil fuels pollute the environment. Fossil fuels are non-renewable and unsustainable.
Answer:
disadvantages of fossil fuels to generate electricity
1. Fossil fuels are not renewable energy sources
2. Fossil fuels pollute the environment
3. In the case of irresponsible use, they can be dangerous
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The mode of nutrition in pea plants and rhizobium bacteria a) saprotrophic b) autotrophic c) symbiotic b) none of these
Answer:
c) symbiotic
Explanation:
-There is a symbiotic relationship between the legumes which contains root nodules and Rhizobium bacteria.
-Rhizobia live in the soil.
-When there is limited soil nitrogen, legumes in symbiotic relationship release flavanoids which sends signal to rhizobia that the plant needs symbiotic bacteria.
-Rhizobia produces ammonia from the atmospheric nitrogen and assists the plant's growth.
Identify the types of biodiversity AND explain why biodiversity is important.
Pls no links
Answer:
Here to help!
Explanation:
Species diversity, genetic diversity, ecosystem diversity, functional diversity. biodiversity. the variety of the earth's species, the genes they contain, the ecosystems in which they live, and the ecosystem processes of energy flow and nutrient cycling that sustain all life! Biodiversity boosts ecosystem productivity where each species, no matter how small, all have an important role to play. For example, a larger number of plant species means a greater variety of crops; greater species diversity ensures natural sustainability for all life forms; and healthy ecosystems can better withstand and recover from a variety of disasters.
¿Cuáles son los usos beneficiosos del fármaco que utiliza la comunidad médic?
. What is the mechanism(s) that the drug uses?
Answer:
In pharmacology, the term mechanism of action (MOA) refers to the specific biochemical interaction through which a drug substance produces its pharmacological effect. A mechanism of action usually includes mention of the specific molecular targets to which the drug binds, such as an enzyme or receptor.
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What are zRGFD the three main driving forces of deforestation?
Answer: Among the detailed categories of proximate causes for all regions, the extension of overland transport infrastructure, followed by commercial wood extraction, permanent cultivation, and cattle ranching, is the leading proximate cause of deforestation.
An example of an infectious disease is:
1-sickle cell anemia
2-small pox
3-Down syndrome
4-diabetes
Environmental science is the study of
a.organismal relationships
b.human impact on the Earth
c.ecosystems
d.all of the above
Answer:
D.
Explanation:
All of the above since they all belong in environmental science.
Answer:
D it is D!
Explanation:
In the snapdragon example, what third phenotype is expressed from the heterozygous genotype?
Red flowers
pink flowers
white flowers
Answer:
Pink flowers, a blending of red and white
The correct option (B) pink flowers.
How is the color of flower controlled?
In snapdragon the color of flower is controlled by incomplete dominance. The two alleles are red(R) and white(R'). The heterozygous genotype is expressed as pink.
What is phenotype?
Phenotype is the observable physical properties of an organisms.It includes the organisms appearance, development, and behavior.For example color of a flower, height of plant etc.What is genotype?
A gene or a set of gene responsible for a particular characteristics is called genotype.In detail it can used to refer to the alleles, or variant forms of a gene, that are carried by an organisms.Example of genotype is AA is a gene that is responsible for black color of hair.Why other options are incorrect?
Option (A) is incorrect because the RR genotype shows the red flowers.Option (C) is incorrect because the rr genotype shows the white flower.Learn more about incomplete dominance below,
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