Answer:
its D i took the k12 test i hope this helps
Explanation:
Which of the following is an example of natural selection?
A
Over time, the Earth's crust started to solidify about one-billion years after the
planet was formed.
B
Over time, a species of cricket became green because green crickets were better
able to hide among the leaves.
с
In the winter, as food becomes more scarce, some species of birds fly to new
habitats in the south.
D
In June, the Northern Hemisphere gets more direct sunlight due to the tilt of
Earth's axis as it revolves around the sun.
Answer:
its b
Explanation:
i just did it :)
The difference between PCR and real-time PCR is thatA. real-time PCR can measure the amount of DNA amplified as the reaction proceeds, while standard PCR cannot.B. real-time PCR can amplify DNA a billion-fold within just a few hours, while standard PCR cannot.C. real-time PCR can determine the DNA sequence, while standard PCR cannot.D. real-time PCR uses DNA polymerase, while standard PCR does not.
Answer:
The correct answer is A. real-time PCR can measure the amount of DNA amplified as the reaction proceeds, while standard PCR cannot.
Explanation:
PCR (Polymerase Chain Reaction) is a molecular biology technique. Conventional PCR and real-time PCR are diferent types of PCR, and are both used to exponentially amplify DNA molecules. In both types, a polimerase enzyme is employed to sinthesize DNA copies. The main difference is that conventional PCR is qualitative whereas real-time PCR is quantitative. So, real-time PCR permits not only to detect and amplify DNA but also permits to perform a quantification of the target DNA. This is accomplished by measuring a fluorescence signal - which is directly the amount of DNA amplified- during the course of the reaction.
Plzz helpppp!!!!! Will give brainliest and 10 pts!!!!
Explanation:
Red-shift
Emission spectra
Light from a star does not contain all the wavelengths of the electromagnetic spectrum. Elements in the star absorb some of the emitted wavelengths, so dark lines are present when the spectrum is analysed. Different elements produce different patterns of dark lines. The diagram shows part of the emission spectrum of light from the Sun.
A gradient colour spectrum of the sun.
Spectra from distant galaxies
Astronomers can observe light from distant galaxies. When they do this, they see it is different to the light from the Sun. The dark lines in the spectra from distant galaxies show an increase in wavelength. The lines are moved or shifted towards the red end of the spectrum. This effect is called red-shift. The diagram shows part of the emission spectrum of light from a distant galaxy.
A gradient colour spectrum of a distant star.
Red-shift and speed
Astronomers see red-shift in virtually all galaxies. It is a result of the space between the Earth and the galaxies expanding. This expansion stretches out the light waves during their journey to us, shifting them towards the red end of the spectrum. The more red-shifted the light from a galaxy is, the faster the galaxy is moving away from Earth
A small loop of DNA that can get transferred from one bacterium to another bacterium is called a: A. Nucleus B. Plasmid C. mRNA D. Genophore
Which of the following biomes would not have plants with waxy leaves?
a)desert
b)chaparral
c)savanna
d)grasslands
Answer:grassland
explain: 1. try your best lu guys
2.try to look up all this biomed
3.see which one doe shot have waxy leaves
4.done
XX=Female XY=Male.
your best friend has five children and they are all boys. They are expecting their 6th child. What would be the probability for their 6th child to be a girl? Why
Answer:
50% or 1/2
Explanation:
The probability of their 6th child being a girl would be 50% or 1/2.
During meiosis, the female produces X eggs while the male produces X and Y sperms. A random fusion of gametes then occurs during fertilization.
XX x XY
XX (female) XY (male) XX (female) XY (male)
XX - 1/2 or 50%
XY - 1/2 or 50%
Hence, the probability of producing a girl is 1/2 or 50% irrespective of the number of kids a couple might have produced already.
question 1. The construction of the Temple took seven years.
False True? question 2
Solomon sinned by allowing the corruption of God's people in the worship of idols.
True
False
Answer:
Question 1 true
question 2 true
Explanation:
Which pancreatic digestive enzymes digest starches?
Answer:
pancreatic amylase completes the digestion of starches
Explanation:
begun in your mouth, to release molecules of maltose, while pancreatic lipase breaks down fats into fatty acids and monoglycerides.
In the image of the food chain below the ____ is the producer.
A. Fungi
B. Hawk
C. Plants
D. Snake
Answer:
A
Explanation:Producers, also known as autotrophs, make their own food. SO its A
Select the correct answer. Which description is an example of gravitational potential energy transforming into kinetic energy? A.)water flowing downhill and spinning turbines
B.)upward currents of wind spinning blades of a windmill.
C.) plants performing photosynthesis D.) loudspeakers producing sound from electrical signals.
Answer:
A- water flowing downhill and spinning turbines
Explanation:
right on plato/edmentum
To grow, plant cells must produce new components of the cell membrane, including phospholipids and membrane proteins. Components of the cell membrane are most likely synthesized in which of the following cellular structures in a plant cell?
Answer:
endoplasmic reticulum
Explanation:
ER is full with proteins than help to synthesize phospholipids in plant cells
On the pH scale, 14 is a(an)
O base
O acid
O mixture
O salt
Humans drill wells into Earth's crust to draw out groundwater for drinking and
irrigation of crops. Which spheres are interacting? *
O
Atmosphere, biosphere, and hydrosphere
O Biosphere, hydrosphere, and geosphere
Geosphere, hydrosphere, and atmosphere
Atmosphere, biosphere, geosphere, and hydrosphere
Answer:
Biosphere, geosphere, hydrosphere
Explanation:
By looking at a plant, how can you tell if it is a cycad and not a palm?
Answer:
D. look for cones
Explanation:
Item 3
Which organ is found in the excretory system?
stomach
heart
bladder
large intestine
Answer:
Large intestine
Explanation:
Excretory Organs include- skin, liver, large intstine, lungs, and kidneys
Hope this helps
Answer:
skin, liver, large intestine, lungs, and kidneye
Explanation:
I’ll give brainlist if it’s outstanding
How do parachutes work?
Two paragraphs
Use all these terms in your paragraph: Gravity, Acceleration, terminal velocity, force, air resistance.
Help plssss
Answer:
Parachutes are made of light but strong materials to keep yyouin the air and have a safe landing :)
Explanation:
Type the word that appropriately completes each statement.
All fish reproduce sexually, but fertilization may occur in one of two ways.
In__________
fertilization, the female fish releases eggs in the water or on a surface. The male fish spreads
sperm over the eggs to fertilize them.
In__________
fertilization, the eggs are fertilized inside the female's body. The young develop there until the
female gives birth.
exExplanation: external internal
Hello, 3Coli here!
Here is your answer:
In external fertilization, the female fish releases eggs in the water or on a surface. The male fish spreads sperm over the eggs to fertilize them.
In internal fertilization, the eggs are fertilized inside the female's body. The young develop there until the female gives birth.
Hopefully, this helps! :D
Ask your question below!
Help ASAP
thanks...............
Answer:
1. Ozone :- Form of oxygen having three atoms of oxygen to a molecule.
2. Mesosphere :- Later of the atmosphere just above the stratosphere.
3. Stratosphere :- The layer of atmosphere just above the troposphere where the temperature remains fairly constant.
4. Thermosphere :- The layer of atmosphere above the mesosphere where temperature are the highest in the atmosphere.
5. Ozonosphere :- Region in the upper stratosphere where the ozone is concentrated.
6. Aurora :- Streamers and band of light appearing in the sky at night , especially in polar region.
7. Ionosphere :- Layer of atmosphere containing ions; above the stratosphere.
8. Ion :- An electrically charged atoms.
9. Troposphere :- The layer of the atmosphere nearest the Earth in which most weather changes occur.
Which object did New Horizons observe more closely than any other spacecraft in 2015?
-Mercury
-Venus
-Neptune
-Pluto
Answer is D pluto
Two days later, with about four months remaining before its close encounter, New Horizons finally became closer to Pluto than Earth is to the Sun. Pictures of Pluto began to reveal distinct features by April 29, 2015, with detail increasing week by week into the approach.
Which material would get electrons from the source to the load the fastest
Answer:
However, graphene has far fewer electrons than copper, so in graphene the electrical current is carried by only a few electrons moving much faster than the electrons in copper." In semiconductors, a different measure, mobility, is used to quantify how fast electrons move.
Answer:
D
Explanation:
D
a beta 1,4 linkage is used to form lactose. sketch a hypothetical disaccharide where it instead links between two monosaccharide that form lactose via an alpha-1,6 formation
Answer:Oligosaccharides are built by the linkage of two or more monosaccharides by ... Two molecules of glucose are linked by an α-1,4-glycosidic bond to form the ... Sucrose, Lactose, and Maltose Are the Common Disaccharides ... The branches are formed by α-1,6-glycosidic bonds, present about once in 10 units (Figure 11.13).
Explanation:
How do plants obtain carbon?
from animals that feed on the plants
from microorganisms that live in soil
from carbon in the soil
from carbon dioxide in the atmosphere
Answer:
from carbon dioxide in the atmosphere
explanation: when we breath out we are leaving carbon dioxide in the atmosphere and that is how plants get carbon dioxide and give us oxygen
Answer:
from carbon dioxide in the atmosphere
Explanation:
hope it will help you
Use the diagram below to help you to choose ALLL the CORRECT answers for the question: What are the differences between Meiosis i and Meiosis II?
(MULTIPLE CHOICE)
A In Metaphase I and Metaphase II the chromosomes line up differently because there are a different number of copies
B Telophase and cytokinesis do NOT happen in Meiosis II
C After Meiosis II the 4 daughter cells undergo cell specialization to become eggs or sperm, which does not happen after Meiosis I
D In Prophase I the chromosomes crossover, in Prophase II they do not crossover
Answer:
a
Explanation:
Imagine an animal cell lost half of its mitochondria. Explain how the cell would be different.
YOU WILL GET 100 POINTS.
Answer:
Without mitochondria (singular, mitochondrion), higher animals would likely not exist because their cells would only be able to obtain energy from anaerobic respiration (in the absence of oxygen), a process much less efficient than aerobic respiration. ...
Explanation:
Mitochondria are rod-shaped organelles that can be considered the power generators of the cell, converting oxygen and nutrients into adenosine triphosphate (ATP). ATP is the chemical energy "currency" of the cell that powers the cell's metabolic activities. This process is called aerobic respiration and is the reason animals breathe oxygen. Without mitochondria (singular, mitochondrion), higher animals would likely not exist because their cells would only be able to obtain energy from anaerobic respiration (in the absence of oxygen), a process much less efficient than aerobic respiration. In fact, mitochondria enable cells to produce 15 times more ATP than they could otherwise, and complex animals, like humans, need large amounts of energy in order to survive.
mitochondrion is different from most other organelles because it has its own circular DNA (similar to the DNA of prokaryotes) and reproduces independently of the cell in which it is found; an apparent case of endosymbiosis. Scientists hypothesize that millions of years ago small, free-living prokaryotes were engulfed, but not consumed, by larger prokaryotes, perhaps because they were able to resist the digestive enzymes of the host organism. The two organisms developed a symbiotic relationship over time, the larger organism providing the smaller with ample nutrients and the smaller organism providing ATP molecules to the larger one. Eventually, according to this view, the larger organism developed into the eukaryotic cell and the smaller organism into the mitochondrion.
in most animal species, mitochondria appear to be primarily inherited through the maternal lineage, though some recent evidence suggests that in rare instances mitochondria may also be inherited via a paternal route. Typically, a sperm carries mitochondria in its tail as an energy source for its long journey to the egg. When the sperm attaches to the egg during fertilization, the tail falls off. Consequently, the only mitochondria the new organism usually gets are from the egg its mother provided. Therefore, unlike nuclear DNA, mitochondrial DNA doesn't get shuffled every generation, so it is presumed to change at a slower rate, which is useful for the study of human evolution. Mitochondrial DNA is also used in forensic science as a tool for identifying corpses or body parts, and has been implicated in a number of genetic diseases, such as Alzheimer's disease and diabetes.
i hope this is helpful
have a grest day!!:))
Can you see individual cell without a microscope?
Please help me
how the body defends itself against infection
Answer: poop
Explanation: if you cover yourself in poop it heats your body up an animal does this but i cant remember which one
Answer:
Natural immunity: inborn defence. External defence is maintained by means of intact skin, by mucous, which traps and eliminates micro‐organisms, and by body secretions such as saliva and perspiration, which have disinfectant properties.
Please answer will give brainliest.
Digestion of ___ begins in the stomach. Select one: a. starch and proteins b. starch and triglycerides c. triglycerides and proteins d. starch and all other oglio-orpolysaccharides
Answer:
c.triglycerides and proteins
A liquid has a ph of 12. It is... A. an acid B. a base C. neutral
Answer:
the answer is B) base
Explanation:
Control and Data
a tentative, testable scientific explanation
useful for determining the effect of the independent variable
Answer:
cacacacacacacacacacacacacacacaca
Answer:
kkdm
Explanation:
kmlnui