Answers
Answer:
radio wave
Explanation:
1km = 1000 metres, or 10³, so it must be a radio wave
Related Questions
Pick one of the following genetic variations that have occurred in human evolution. Then pick one of the three causes of genetic variation (meiosis, replication errors, environmental impacts) and make a claim as to why you think that particular cause of genetic variation was the cause of the change. Use supporting research and/or data to support your claim.
- Smaller bodies
- Smaller brains
- Smaller teeth and jaws
Answers
Smaller teeth and jaws are due to genetic variation, which occurred by mutations (errors in DNA replication) and were selected to fill a suitable niche.
What is evolution?Evolution is the mechanism of change of one species to adapt given environment, whereas mutations are the raw material for evolution.
In this regard, scientific evidence supports the fact that jaws evolved to become shorter in humans and thus adapt to a pastoral lifestyle.
In conclusion, smaller teeth and jaws emerged by mutations and were selected to fill a suitable niche.
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Match functions to the appropriate groups of proteins.
enzymes proteins of extracellular structures
proteins of myofilaments in the cells of muscle tissue
proteins playing a role in the organism's defense system
proteins transporting oxygen in the blood hormones
proteins of the karyokinetic spindle
Function
transformations
of matter and
energy
control of
metabolic
processes
formation of
structural
components
transport
movement
cell division
defense
Group of Proteins
Examples
trypsin, lipase,
carbonic
anhydrase,
cytochrome c
insulin, glucagon,
growth hormone
collagen
hemoglobin
actin, myosin
tubulin
immunoglobulins
Answers
The groups of proteins and their appropriate functions include the following:
Enzymes proteins of extracellular structures - collagen.Proteins of myofilaments in the cells of muscle tissue - myosin, actinProteins playing a role in the organism's defense system - immunoglobulinsProteins transporting oxygen in the blood hormones - hemoglobinProteins of the karyokinetic spindle - tubulinWhat is Protein?This is referred to as a biological molecule which is involved in the growth and repair of tissues in the body system. They contain two or more amino acids which are derived when they are broken down with the aid of enzymes.
There are different types of proteins with their specific functions such as hemoglobin being an oxygen carrier in the blood etc. The groups of proteins and their appropriate functions can be seen above.
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Explain how a disease could cause an effect on the overall function of an organ system by describing a specific example and identify a technology that has been developed to replace the lost cellular function.
plssss help
Answers
Answer:
Bradycardia, a type of heart disease that causes heartbeats to be slowed down, disappear, or not able to travel, can be treated with a pacemaker, which helps stimulate heartbeats artificially.
Explanation:
A water-soluble hormone approaches its target cell. What can we conclude about this hormone?
The hormone originated in the ovaries or testes
The hormone will be a non-steroid
The hormone is hydrophobic and will need to combine with protein molecules to enter the cell
The hormone released will signal the beginning of puberty
Answers
If a water-soluble hormone approaches its target cell, it can be concluded that the hormone will be a non-steroid (option B).
What is an hormone?An hormone is any substance produced by one tissue and conveyed by the bloodstream to another to effect physiological activity.
Hormones are usually proteinous in nature and can either be water-soluble or fat-soluble depending on whether it can dissolve in water or fat respectively.
According to this question, a water-soluble hormone approaches its target cell. This suggests that that hormone must be a non-steroid i.e. does not contain fat.
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How can you use more renewable sources of energy? Select all that apply.
Use carpools or public transportation.
Stop using all forms of energy altogether.
Grow your own food and buy local products.
Wait for governments to make laws.
Answers
Answer: a and c
Explanation: You don't need to wait on the government to make laws to be able to be energy efficient, nor do you have to stop using all forms of energy altogether.
. Which season is the Southern Hemisphere experiencing in the picture?
Answers
Answer: summer
Explanation:
which type of inhibitor will achieve saturation point at alower substrate concentration? With a reason
Answers
The molecule in question is classified as an enzyme inhibitor because it interferes an enzymatic reaction. There are two types of inhibitors; competitive and noncompetitive inhibitors. Competitive inhibitors bind to the active site of the enzyme and control substrate from binding.
What do competitive and noncompetitive inhibitors do?
The competitive inhibitor binds to the occupied site and prevents the substrate from binding there.
The noncompetitive inhibitor binds to a separate site on the enzyme; it doesn't block substrate binding, but it causes other differences in the enzyme so that it can no extended catalyze the reaction efficiently.
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Describe the four major steps of digestion, and discuss the organs involved in each.
Answers
nouth, oesophagus, stomach, duodenum, pancreas, ileum,colon, rectum,anus.
Answer:
Ingestion is when food comes into the body through the mouth and down the esophagus. Digestion begins with chemically with enzymes in saliva, and mechanically with the teeth, and continues when food (as a bolus) enters the stomach to be dissolved by acid and pepsin. Food (chyme) then goes into the small intestine where nutrients are absorbed through the villi. Waste is then eliminated through the large intestine, rectum, and anus.
Explanation:
Answer from Biology Part 2 Test.
DNA and RNA are structurally similar but also have some notable differences. RNA has uracil in place of thymine as one of its bases, uses ribose in place of deoxyribose, and
Question 4 options:
A)
can't form base pairs.
B)
has a different phosphate group in its backbone.
C)
is a polymer of nucleotides and amines.
D)
often exists as a single-stranded molecul
Answers
Answer:
D.) often exists as a single-stranded molecule
Explanation:
One notable difference between DNA and RNA is that DNA consists of 2 nucleotide strands and RNA consists of 1.
3. How many limbs do organisms in the order Gymnophiona have? 1: two 2: multiple pairs 3 : none
Answers
the organisms in the order Gymnophiona have no limbs. Option 3
What is Gymnophiona ?
Gymnophiona also called Apoda, area known as one of the three major orders of the class Amphibia.
Its members are known as caecilians which means “sightless” or “blind.”
Majority of the organisms in this group are limbless and wormlike amphibians that live underground in humid tropical regions throughout the world.
They are believed to have internal fertilization.
Their heads are blunt, and their skulls are bony and compact in nature.
Since they are limbless, they have no limbs
Thus, the organisms in the order Gymnophiona have no limbs. Option 3
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Answer:
I hope this helps.
Explanation:
2. Bone
A 68-year-old Asian female presents with mildly achy muscles and joints. The aches seem to “come and go” quite often lasting for several days at a time. Upon examination you take note of a hunch-backed appearance on the patient. An x-ray is performed and showed a significant decrease in bone tissue mass. After further diagnostic testing is performed the patient is diagnosed with Osteoporosis. TAKE NOTE: Osteoblast cells build bone matrix while osteocytes maintain the matrix. Osteoclast cells break down bone matrix and reabsorb the nutrients.
Using your knowledge of the human physiology, which of the following do you predict is a potential cause of the Osteoporosis?
A. Decreased osteoblast activity B. All choices are potential causes
C. Increased osteoclast activity D. Secondary to external factors like drugs/cancers
Answers
Osteoporosis causes bone density to decrease due to decreased osteoblast activity, increased osteoclast activity, and external factors like long-term medication. Option B. All choices are potential causes.
What are the factors that promote osteoporosis?
Let us first review what the bone cells are and their functions,
• Osteoprogenitores → in charge of osteocytes production
• Osteocytes → maintain the matrix
• Osteoblasts → Synthesize and secrete osteoid matrix that will later calcify
• Osteoclasts → Phagocytic cells in charge of osseous resorption and bone modulation.
Osteoporosis is a no-symptoms disease -silent- that causes a decrease in the bone mineral and mass density and might change the bone structure.
Osteoporosis weakens the bone until it breaks. So this affection becomes evident when a fracture occurs.
Several factors lead to osteoporosis development. Among them, we can mention,
genetic factors, habits factors (lifestyle),hormonal alterations,drugs/medication
The increased rate of bone resorption is the major mechanism by which osteoporosis occurs. It deteriorates bone structure and decreases bone density.
Bone resorption and deterioration might be caused by
a decrease in osteoblast activity, leading to the decrease in osteoid matrix formation and calcification,an increase in osteoclast activity, enhancing the activity of these phagocytic cells.
Other external factors also increase the probability of developing osteoporosis. Some of them are,
long-term medications (for instance, those used in cancer treatment) excessive alcohol consumption and smokingsedentary lifestylepoor dietAccording to this framework, the potential causes of the Osteoporosis are Decreased osteoblast activity, Increased osteoclast activity, Secondary to external factors like drugs/cancers.
Hence, option B is correct, All choices are potential causes.
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Which organelle in the table is correctly matched with its function?
Answers
The organelle in the table that correctly matches its function is the ribosome because it produces proteins.
What is a ribosome?A ribosome is an organelle that functions as a protein factory in the cell, whereas vacuoles contain dissolved materials and store water.
Mitochondria are energy producers by the process of cellular respiration, and lysosomes contain hydrolytic enzymes.
In conclusion, the organelle is a ribosome that produces proteins.
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look at the picture
Answers
Answer:
Clean + Renewable
Explanation:
Answer:
Clean and Renewable
Explanation:
hope it helps
Based on the punnet square above, what is the probability that an offspring from this cross will have a homozygous recessive genotype ?
A. 100%
B. 50%
C. 25%
D. 0%
Answers
Answer:
C)25%
Explanation:
the results of the punnet square are:
1. TT (homozygous dom)
2. Tt (heterozygous)
3. Tt (heterozygous)
4. tt (homozygous recessive)
capital letters are dominant and lowercase are recessive
Answer:
25%Explanation:
Homozygous Recessive: (homo means same) Both letters representing the genes are the same, and they are recessive (lowercase t)
Each box within a punnett square represents a 25% chance possible outcome.
There is only one box in this punnett square wherein both letters are lowercase t.
In the cross between (R1R2 x R1R2) the ratio of resulting (R1R2) in the cross is:
Answers
Use the punnet square
Economic profit equals zero when total revenue (TR) equals total cost (TC).
Answers
The statement is true. Economic profit equals zero when total revenue (TR) equals total cost (TC).
In Economics, total cost is defined as the sum of costs that is incurred by firm for the production of certain level of output.
Mathematically, it is calculated as:
TC (total cost) = TFC (total fixed cost) + TVC (total variable cost)
Fixed cost refers to a cost that does not change with an increase or decrease in the number of goods or services produced or sold.
Variable cost changes with an increase or decrease in the number of goods or services produced or sold.
Total revenue is also called gross revenue. It is the total amount of income your company brings in from selling your products/services.
When total revenue (TR) equals total cost (TC), economic profit equals zero.
Hence, the given statement is true.
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Reactive metals usually react with
A. Bases, noble gases, air.
OB. Air, magnesium and sodium.
OC. Noble gases, air, water.
D. Water, oxygen and acids.
Answers
Answer:
[tex]\fbox {D. water, oxygen and acids}[/tex]
Explanation:
Reactive metals usually react with water, oxygen and acids.
Using the reactivity series of metals, we can see which metals are more reactive, such as sodium and potassium.
Answer:
D. water , oxygen and acid
Explanation:
why because noble gases are unreactive. magnesium and sodium are examples very reactive metals.
Make sure the answers to all four questions are correct. 100% correct answer. Thank you
Answers
Chicken, beef, pork, and egg are sources of protein from most efficient to least efficient.
option(a) and option(b) i.e, being an informed consumer and buying locally farmed produce supports sustainable agriculture.
overnutrition is consuming more calories than necessary. undernutrition is consuming less calories than necessary. malnutrition is not consuming enough food to gain specific nutrients needed to sustain life.
option ( a, b, e, f, i, and j ) are risks of using pesticides.
Large biomolecules and macromolecules known as proteins are made up of one or more extended chains of amino acid residues. It aids in cell regeneration and repair in your body.
Sustainable agriculture is the practice of farming in a way that satisfies society's current demands for food and textiles without endangering the ability of present or future generations to meet their own needs. It might be founded on knowledge of ecosystem services.
The biochemical and physiological process by which an organism uses food to sustain its life is known as nutrition. Consumption, absorption, assimilation, biosynthesis, catabolism, and excretion are all included. Nutritional science is the field of study that focuses on the physiological aspects of nutrition.
Pest control agents are compounds known as pesticides. Insecticide, nematicide, molluscicide, piscicide, avicide, rodenticide, bactericide, insecticide, animalized, microbicide, fungicide, and lampricide are some examples of these.
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Which of the following is an environmental factor that could cause a mutation?
A. psychological agents
B. irrelevant mutagens
C. internal agents
D. biological mutagens
Answers
Sorry if I’m wrong
Answer: D. biological mutagens
Explanation:
The correct examples of nonrenewable resources are:
petroleum, coal, and gas
water, petroleum, and coal
water, wind, and sunlight
sun, fossil fuels, and wind
Answers
Front legs of a cat and the arms of a human share a bone structure that suggests a common evolutionary lineage. Therefore these skeletal structures are
Answers
Answer:
homologous
Explanation:
Homologous organs are organs that share some similarities in different organisms but whose function differ in these organisms.
:)
Forelimbs of cat and arms of human share a similar bone structure, suggesting a common lineage. These type of common structure are said to be homologous structures.
Organs that function differently in different organisms but have some similarities are known as homologous organs. Although the organs are structurally similar, they serve different purposes. One of the arguments used by scientists to support evolution is the existence of homologous organs.
Even though their structures are based on the same five-digit plan, human arms and the front legs of cats serve different purposes.
Therefore, forelimbs of cat and forelimbs of humans are said to be homologous structures.
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look at the picture
Answers
Answer:
Gamma rays have a higher frequency than radio waves
Max's teacher told the class that he was providing an exam with five difficult questions because this exam would take them less time to complete than a typical exam with twenty questions. The teacher said he would let them leave school when they finished and start their weekend. What obstacle did Max's teacher use to gain the students' support?
Belief perseverance
Fixation
Framing effect
Overconfidence
Answers
hope this helps
Max's teacher use to gain the student's support by adding the obstacle of framing effect in the examinations. Thus, the correct option is C.
What is Framing effect?The framing effect is a cognitive bias in which the brain makes all the decisions about information depending upon how the information is presented to them. In this, people decide the options which were based on whether the options are presented with positive or negative connotations to them. For examples: the students doing examination.
People tend to avoid the risk when a positive frame is presented to them however they seek the risks when a negative frame is presented to them. Framing effect occurs when the decisions which people make are changed as a result of the way in which the outcomes are described to them.
Therefore, the correct option is C.
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Can anybody tell me how cell shape affects function? For example if columnar and epithelial cells shapes affect their respective functions?
Answers
Answer:
Cell Shape: Large surface area = Function: Absorption/metabolism increases
Explanation:
The large the surface area of a cell allows for more receptors to interact to increase the amount of metabolism that occurs within the cell. The example you provided, columnar and epithelial cells, are found in various locations throughout the body but are most notable found in the intestinal lining of our intestines. The shape of the columnar which is made up of epithelial cells is waved shaped to allow for more surface area within a given location. Consequently, leading to further absorption.
4. Which of the following are parts of the amniotic reptile egg? (Choose all that apply) amniotic fluid albumen water space shell membrane
Answers
The parts of the amniotic reptile egg include the amniotic fluid, the albumen, and the shell.
Parts of an amniotic reptile's eggThe various parts of amniotic reptile's eggs include:
The external shell which serves as a protective layerThe yolk which supplies energy to the embryoThe albumen supplies the embryo with water and proteinsThe extra-embryonic membranes - the chorion, the allantois, and the amnion.The chorion serves as a channel for gaseous exchange between the embryo and the environment.
The allantois partially functions as waste manager and in respiration. It stores nitrogenous wastes and gets rid of them as well as participates in gaseous exchange along with the chorion.
The amnion protects the embryo against mechanical shocks. It also protects the developing embryo from being dehydrated.
In other words, the 3 extra-embryonic membranes protect, facilitate gaseous exchange, and ensure that wastes are properly disposed of.
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Answer: Everything Except Water space
Explanation:
Which of the following occurs in meiosis but not mitosis?
O Sister chromatids separate and move to opposite ends of the spindle
O Homologous chromosomes separate
O The cells formed have the same combination of genes as found in the initial cell
O The nuclear envelope disappears
OA spindle apparatus forms
Answers
Answer:
AnswerThe nuclear envelope disappear
Place the steps of the infection in the correct order.
1
2
3
4
5
6
7
Answers
LOL
LOL I also don't know the answer bro sorry
LOL
How do earth energy budget effect earths system
Answers
Answer:
The absorbed sunlight drives photosynthesis, fuels evaporation, melts snow and ice, and warms the Earth system. Solar power drives Earth's climate. Energy from the Sun heats the surface, warms the atmosphere, and powers the ocean currents.
Which of the following describes the impact on human health from global climate change?
A) Excess greenhouse gases will cause competition among vectors for hosts, and the vectors will die off.
B) Global climate change will result in the warming of cooler regions and will increase the spreading of disease.
C) Melting glaciers will keep regions too cold and prevent vectors from migrating to these regions.
D) Warmer climates will prevent vectors from traveling to new regions and infecting more humans.
Answers
Answer: B
Explanation: B) Global climate change will result in the warming of cooler regions and will increase the spreading of disease.
Answer:
B) Global climate change will result in the warming of cooler regions and will increase the spreading of disease.
Explanation:
It will be right on the quiz. Have a great, meaningful, and productive day, fellows!
HELP THIS IS REALLY SERIOUS I NEED HELP AHHH I DONT WANT TO FAIL!! question:Those who support the alien theory believe that the ancient Egyptians were very primitive. What evidence about the ancient Egyptians suggests that this claim is inaccurate? Check all that apply. They built the Seven Wonders of the Ancient World. They invented an early version of the wheel. They had a well-developed agricultural system. They raised domesticated animals. They developed a writing system. They used early forms of tools.
Answers
The evidence about the ancient Egyptians that suggests that this claim is inaccurate are:
They had a well-developed agricultural system.They raised domesticated animals.They developed a writing system.They used early forms of tools.What is a Supporting Detail?This refers to the use of evidence in order to validate a claim that is made through the use of factual or statistical data.
Hence, we can see that based on the fact that people thought that the pyramids of Egypt were built by aliens was false because there are supporting details to prove them otherwise and they are listed above.
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