Answer:
4
Explanation:
Stand and let your hands hang next to your sides for a few minutes. Then, look at the backs of your hands. Do you see any bumps on the surface on top of your veins? What might those be, and what are their function?
When you stand and let your hands hang next to your sides for a few minutes, the bumps you see on your veins are the valves that help move blood to the larger veins.
What we know about vein valves.There are valves located throughout the veins in our bodies. Most of these are located in points where smaller venules fuse with the larger veins.
Their function is to prevent blood from flowing back into the smaller veins, thus helping with the normal blood flow of the body.
Given that the veins in our bodies are littered with small valves to help the blood return to the heart correctly, we can confirm that these are the small bumps that we can see when letting our hands down for a few mins, as they fill with the blood they try not to let flow back into the smaller veins.
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Which idea explains Darwin’s observations about Galapagos Islands finches?
A) biological species concept
B) ecological species concept
C) endangered species extinction
D) sympatric speciation
Answer:
I think the answer is A) biological species concept
The most basic definition of cellular respiration is that it is cells breaking down food to make energy. True or false?
Answer:
True
Explanation:
In cells, energy is obtained from food through the process of cellular respiration. In mitochondria, this occurs through aerobic respiration- here, cells breakdown sugars like glucose into carbon dioxide and water and energy in the form of ATP or adenosine triphosphate.
In cellular aerobic respiration:
C6H12O6 (glucose) + 6 O2 → 6 CO2 + 6 H2O + ≅38 ATP
Where are coral reefs located?
A. estuaries
B. neritic zone
c. intertidal zone
D. oceanic zone
Answer:
c
Explanation:
intertidal zone
5. Describe the different causes of climate change.
Answer:
natural factors, changes in the sun, emissions from volcanoes, variations in Earth's orbit and levels of carbon dioxide.
Explanation:
These types of trees have their leaves modified into needles to help
reduce water loss?
Answer:
Coniferous trees
Explanation:
They are mainly found in cold regions
Can someone pls help me with this (8th grade science)
Answer:
A
Explanation:
As he kicks the ball the speed increases, where he kicks the ball also is a factor, since he kicks it in the same direction that is why it is choice A.
what do you think about the human and his structure how it's made all the human structure
Answer:
its a thousand of generation evolution i think as of darwins law of evolution
Answer:
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Plz help I don’t know the answer to this!!
What is meant by the word "concentration"'?
Which element is not found on most main sequence stars?
Answer:
Nitrogen is the right answer.
what do you think causes different phenotypes in organisms how does the phenotype depend on its genes (genotype)
Answer:
They difference in phenotypes is dependent on the genes. The more dominant gene will overpower a recessive gene, or if there are two recessive genes together, that will be the phenotype. When things are cross breaded they introduce different genotypes that allow for different looking phenotypes.
Example: Dominant blue flower (Bb) mixed with recessive yellow flower (bb)
B b
b Bb bb
b Bb bb
There is a 50/50 chance the offspring will be either blue or yellow
The differences in phenotypes are determined by genes. The more dominant gene will completely overwhelm a recessive gene, or if two recessive genes coexist, the phenotype will be that. When things are crossbred, unique genotypes are introduced, allowing for different-looking phenotypes.
What is phenotype?A "phenotype" is simply an observable trait. "Pheno" simply means "observe," and it derives from the same root as "phenomenon."
The differences in phenotypes are determined by genes. The more dominant gene will completely overwhelm a recessive gene, or if two recessive genes coexist, the phenotype will be that.
When things are crossbred, unique genotypes are introduced, allowing for different-looking phenotypes.
Thus, in this way, phenotype is dependent on genotype of the organism.
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does photosynthesis occur in mushroom give a reason to support your answer
Answer:
No
Explanation:
Although mushrooms and fungi have a cell wall like plant cells, fungi are unable to make their own food and must feed on decaying matter to gain the energy needed for survival.
Hope this helps :)
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Name of Tail-like organelle used by some protist
Answer:
flagellum
Explanation:
Flagellum enable some protist to move
(TRUE OR FALSE)
As discoveries were made that couldn't be explained by spontaneous generations, scientist came up with an updated version of the spontaneous generation model?
PLZ HELP WILL BRAINLIEST
IF U DONT KNOW THE ANSWER DONT U DARE
Answer: I'm pretty sure this is true
Explanation:
4.
______ describes the average conditions of our atmosphere over a long period
of time.
Answer:
The answer is Climate.
what is the fundamental unit of matter?
the atom is the fundamental unit of matter.
(hope this helps ^^)
A single population is made of
A) multiple organisms of the same species.
B) multiple organisms of different species.
C) multiple communities.
D) multiple biomes.
Answer:
A) multiple organisms of the same species.
Explanation:
Answer:
A (multiple organisms of the same species.)
Explanation: hope this helps sorry if i'm wrong
What event changes an atom into an ion?
Answer:the gain or loss of one or more electrons (B)
Explanation:
The physical and chemical properties of elements change in predictable ways from one end of a period to another. Which of the following is true based on this feature of periodic table (p 312)?
Group of answer choices:
A : Potassium has more protons than Calcium
B : An atom of gold is smaller (atomic size) than an atom of platinum
C:The noble gases react with everything
D: Elements in Group 8 are more reactive than elements in Group 7
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Answer:
Are those your breast?
Explanation:
why this site
What is the source of oxygen as a reactant in cellular respiration?
Answer:
The Reactants
What goes into the cell? Oxygen and glucose are both reactants of cellular respiration. Oxygen enters the body when an organism breathes. Glucose enters the body when an organism eats.
Explanation:
Hope this helped, Thanks :)
Cellular respiration has been the chemical process that uses glucose to produce energy. Oxygen is the reactant of the process that comes from the air (breathing) produced by photosynthesis.
What is cellular respiration?Cellular respiration has been defined as the process vital for living organisms that use oxygen and sugar molecules to produce energy to drive the activities and functions of the body. The reactant of the process includes glucose and oxygen gas.
Oxygen and sugar are known to be the product of the photosynthetic reaction that uses carbon dioxide and water. The oxygen gas is present in the atmosphere and enters the body through breathing.
Therefore, oxygen acts as a reactant in cellular respiration that comes from the breathing process.
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What is insulin and why do people with Type 1 diabetes need it to survive?
Answer:
Insulin is needed to move blood sugar (glucose) into cells. Inside the cells, glucose is stored and later used for energy. With type 1 diabetes, beta cells produce little or no insulin.
how do skin cells replace itself after an injury?
a) skin cells go through the process of budding to make new identical cells.
b) skin cells go through the procces of mitosis to make new identical cells.
c) skin cells go through the process og photosynthesis to make new identical cells.
d) skin cells go through the process of cellular respiration to make new identical cells.
Answer:
d
Explanation:
as a result of accumulation of waste products in the body , these substances are removed from the body via the skin hence they undergo cellular respiration
Answer:
b) skin cells go through the process of mitosis to make new identical cells.
Explanation:
The skin is the largest organ in the human body; it forms a protective barrier that keeps out external pathogens, and is integral to waste removal. When the organ is injured, damaged cells initiate an immune response, while healthy cells nearby begin to replicate.
This type of cell replication involves somatic cells and results in the diploid number of chromosomes called mitosis. Skin cells are somatic- they contain all 24 pairs of human chromosomes. During replication, the chromosomes are unwound, and copied- then, the newly copied chromosomes separate into two identical daughter cells with the same chromosome number.
Fragmentation occurs when a large area of ecosystem is divided into smaller, isolated areas due to deforestation. After fragmentation, changes to the ecosystem can occur. Which is most likely an effect of fragmentation on an ecosystem?
a. Animal species in the fragmented area utilize new food sources in the deforested area.
b. Plant species from the deforested area alter conditions at the edge of the fragmented area.
c. The nutrient cycle is replenished by new species colonizing the deforested area.
d. Most native species disappear from both deforested and fragmented areas.
Answer:B
Explanation:
What happened when Earth's first atmosphere collapsed? Will mark you as brainliest!
- it created oxygen
-it formed the oceans
-it triggered an ice age
-it fell as rain, watering the earliest plants
Explanation:
solar radiation would break atmospheric water into oxygen, which would react with carbon on the Earth to form carbon dioxide. The air would still be too thin to breathe. The lack of atmosphere would chill the Earth's surface.Plants and land animals would die
Elisa feel tired because she has a condition
Answer:
I'm sorry to hear that.
Answer: Its because she has diabetes.
Explanation: Her cells are not getting enough glucose.
What is the process depicted in this figure and why is it important?
Answer:
The correct answer is - antigenic shift due to mutation.
Explanation:
In this image, there is a representation of the antigenic shift or change takes place to evolve to a new strain of influenza virus from the original virus that has a different antigen on the surface of the virus than the new strain. In this image it is shown that the surface H antigens went through a shift to form a new strain while N antigen remain the same.
This is important to adapt and evolve according the internal environment of the host show this type of mutation requires if moving from one host to another (human to pigs).
Where dose plastic come from?
Answer:
Plastics are derived from natural, organic materials such as cellulose, coal, natural gas, salt and, of course, crude oil. Crude oil is a complex mixture of thousands of compounds and needs to be processed before it can be used. The production of plastics begins with the distillation of crude oil in an oil refinery.
Explanation:
Recall what you know about nervous tissue to answer the following questions. Nervous tissue can generate and conduct ____ signals that control the body.
answer choices are:
chemical
electrical
thermal
Answer:
Nervous tissue can generate and conduct electrical signals that control the body.
Explanation:
The neuron is the specialized cell that provides function to nerve tissue. Given the structure of the neuron, this cell is capable of creating and conducting information in the form of electrical impulses or signals, by depolarizing its cell membrane and generating action potentials.
The information generated and transmitted by the neurons allows the nervous system to obtain internal and external information of the organism, as well as to control all the body functions.
The other options are not true because nerve tissue does not generate or conduct thermal or chemical signals to perform its function.
Answer:
Part 1: electrical
Part 2: A, B, E
Explanation:
did it on edg.
Which one of the following organisms IS EATEN BY AN OMNIVORE in this food web?
If you don’t know the answer please don’t guess bc this is ixl and it’ll start me over.
Answer:
the cytoplankton
Explanation: