Answer:
True
Explanation:
thx for the points
how do tears protect us against infective conjunctivitis
Answer:
Preventing infection Foreign bodies that enter the eye are washed out by tears. Moreover, tears contain a substance called lysozyme, which has an antibacterial action, and works to prevent invasion and infection by microbes. Healing damage to the surface of the eye
Explanation:
The Earth is ________________of years old
Answer:
the earth is 4.543 billion years old
What does the axon of a neuron do?
A
protect the dendrites
B
carry signals away from the soma
C
insulate the myelin sheath
D
process the information it receives
Question 9 of 10
Which process is a form of mechanical weathering?
Explanation:
abrasion, pressure release, thermal expansion and contraction and crystal growth.
10. What enzyme unzips or breaks apart DNA for replication?
A. Helicase
B. Ligase
C. Polymerase
D. Okazaki
Answer:
a. Helicase Helicase the double helix bond is broken.
All stages of plant development are called?
Answer:
seed stage, Germination, Growth, Reproduction, Pollination, and Spreading Seeds
Explanation:
Hope this helps!
Answer:
lifecycle!
Explanation:
Functions of cell wall
Answer:
it protects the plant cell it give the shape to cell
can someone please help me
Answer:
A. Tap water is a homogenous mixture and distilled water is a pure substance.
Explanation:
Tap water can be classified as a homogeneous mixture because it contains equal amounts of dissolved minerals and other chemicals that are even throughout the mixture.
In the other hand, distilled water is classified as a pure substance because it contains definite amount of atoms of elements and unique chemical properties that forms water.
20 POINTS PLZ NEED HELP
I really fluffed up and need help
Directions: Follow the steps below to learn how to lower energy use.
Materials
You will need two saucepans about the same size with lids, a watch or a clock, water, a stove, two eggs.
Pour equal amounts of water into each saucepan. Make sure both have enough water to cover an egg.
Cover one saucepan with a lid.
Put the saucepans on separate burners of the same size on your stove and turn them on to high.
Start timing to see which pot of water comes to a vigorous boil first. (You’ll have to listen to the covered one to tell when it boils—lifting up the lid will spoil the experiment.)
How much longer does it take the second pot of water to boil?
When the two pots of water are boiling:
Place an egg in each one and cover both pots.
Leave one burner on high heat and lower the other to simmer.
Time them for three minutes then remove both eggs at the same time.
Break the eggs and see if one is more cooked than the other.
Explain your observations and what you can conclude based on what you know about heat and energy conservation.
one egg is hard semi-ish boiled and the other is not at all
How to make a girl fall in love with her?
Answer:
depends on what she likes. Just be nice i guess
Explanation:
Answer:
I just say do what she want's you to do like if she is sad but she like sweets go get her sweets and flowers
Explanation:
two choice sorting device used in taxonomy
The moon is roughly one-sixth the size of the earth.
Which statement is true?
The gravitational pull of the moon is greater than the earth because it is larger than earth.
The gravitational pull of the moon is less than the earth because it is smaller.
There is no gravitational pull on the surface of the moon.
The gravitation pull of the moon is the same as the earth because they are both spheres.
Answer:
The gravitational pull of the moon is less than the earth because it is smaller.
Explanation:
Objects with more mass have a larger gravitational pull. Just like stars, which are many, many times more massive than planets, have a larger gravitational pull.
The F1 mother of these progeny (F2) resulted from a cross between two flies from true breeding lines (P generation). What are the genotypes of these two lines
The question is incomplete. The complete question is :
In fruit flies, the recessive pr and cn mutations cause brown and bright-red eyes, respectively (wild-type flies have brick-red eyes). The double mutant pr cn combination has orange eyes. A female who has wild-type eyes is crossed to an orange-eyed male. Their progeny have the following distribution of eye colors:
wild-type8
brown241
bright-red239
orange12
500
The F1 mother of these progeny (F2) resulted from a cross between two flies from true breeding lines (P generation). What are the genotypes of these two lines ?
Answer:
prprcn+cn+ and pr+pr+cncn
Explanation:
Progeny is the offspring or descendants of any animal, plant, human or a species.
In the context, it is given that the cn mutation and recessive pr in the fruit flies makes brown and bright red color eyes. And the double mutant of pr and cn combination makes orange eyes. An oragne eye males is crossed with a female having a wild type eyes. Now for this, the F1 mother of the progeny F2 which results from the cross of two flies, the genotypes is " prprcn+cn+ and pr+pr+cncn. "
A zebra cell is just about to replicate its DNA.
What will happen first?
RNA attaches to DNA.
All of the cell’s DNA attaches to proteins.
The DNA folds over on itself to create a dense chromosome.
The DNA unravels to make two strands.
Answer:
It will create two strands.
Explanation:
DNA always has two strands. Answer is it will create two strands
Goodbye
Answer:
The answer to this question is the DNA unravels to make two strands.
Explanation:
I attached a file of the correct answer for proof to help you guys out.
Hope this helps! :)
Cilia
Click through the images to
answer the questions.
4. Which type of microscope
produced the image of cilia?
5. What type of microscope
would be best for studying cilia
Answer:
Scanning electron microscope and electron microscope.
Explanation:
Scanning electron microscope is a type of microscope which can produced the image of cilia. Electron microscope is a type of microscope would be the best for studying cilia because it has higher magnification power i. e. 10,000,000x, which able us to study different parts of cilia so we can say that electron microscope is the right choice for studying cilia.
does the radiation from the sun to the sand lower the kinetic energy of the sand
Bees with short tongues are able to obtain nectar from deep flowers by drilling holes in the base of the flower without visiting the top of the flower. This behavior does not kill the flower. In a particular environment, bees with short tongues replace bees with long tongues. Predict the effect on the proportion of plants with deep flowers in future generations. Justify your prediction.
Answer:
The proportion of plants with deep flowers in future generations will decrease and will be very low.
Explanation:
To analyze this, we need to keep in mind the pollination process and the following general ideas:
Bees with long tongues can obtain nectar from deep flowers by visiting the top of them and extending their tongues to their bottom.During their visit to the flowers and their search for nectar, long-tongued bees transport pollen from flower to flower, favoring pollination.Bees with short tongues can obtain nectar from deep flowers by drilling holes in their base without visiting their tops.Short-tongued bees do not need to access the nectar by the top of the flower. They do not get in contact with stamens, so they do not play a pollinator roll. In a particular environment, bees with short tongues replace bees with long tongues.In this particular environment, long-tongued bees used to visit plants with deep flowers to get their nectar. They used to get in contact with mature stamens and carry the pollen on their bodies to the next flower. During this process, long-tongued bees were able to ensure pollination and helped to keep a high reproductive rate of plants with deep flowers.
When shorted-tongue bees arrived at this environment, they were able to replace long-tongued bees. They also looked for the nectar of deep flowers, but instead of visiting them from the top, they were adapted to obtain nectar by drilling holes in the flower base. In this way, they missed the contact with mature stamens and pollen.
Long-tongued bees disappear, and short-tongued bees did not play a role in the pollination process of deep flowers, then the reproductive rate of these vegetable species probably started to decline.
Probably, with time, the proportion of plants with deep flowers in an environment dominated by short-tongued bees will be very low.
The proportion of plants with deep flowers in future generations will decline if bees with short tongues replace bees with long tongues.
What do you mean by environment?Anything which is present in the surrounding of an organism is called its environment. It may consist of Biotic and abiotic factors.
Bees with short tongues are able to obtain nectar from deep flowers by drilling holes in the base of the flower without visiting the top of the flower. In this way, such bees are not in contact with mature stamen and pollen. Therefore, they will not play an effective role in pollination. And if such bees are replaced with long tongues bees, there will never be a deep flower obtained. Deep flowers are obtained by long-tongued bees because they take nectar from the top side and with it they also take mature stamen and pollen to perform successful pollination.
Therefore, the proportion of plants with deep flowers in future generations will decline, if bees with short tongues replace bees with long tongues.
To learn more about Pollination, refer to the link:
https://brainly.com/question/1265792
A large bowl contains a mixture of soil and iron powder. What would be the best way to separate the iron powder from the soil?
Answer:
Add magnet to the bowl, cover the bowl, and shake well
Explanation:
Anything with MAGNET
How do humans affect the traits of other living things?
PLEASE HELP MY ASSIGNMENT IS DUE AT 3:30PM TODAY!
Answer:
Explanation:
well humans can play around with other animals DNA meaning is affect their protein thus their traits and example of this is genetic engineering
Clever ones this is one for you
If you throw a pebble into a pond, ripples spread out from where it went in. These ripples are waves travelling through the water. The waves move with a transverse motion. The undulations (up and down movement) are at 90° to the direction of travel.
Answer:
so please Indicate your question
The normal sodium level in human blood is 135 mEqjL. If a blood test taken immediately after a meal reveals a sodium level of 150 mEqjL, what will most likely result
Answer:
Causes high blood pressure, heart disease, and stroke.
Explanation:
Increase occur in high blood pressure, heart disease and stroke due to increase in sodium level in the blood. If the meal has no sodium then there is no increase occur in the sodium level in human blood while on the other hand, if the meal has more sodium then there is high increase in sodium level in human blood which causes high blood pressure, heart disease, and stroke.
What variables would you likely need to control? Check all that apply.
What patterns do you see in the similarities and differences between Hox genes in
humans and in fruit flies?
Explanation:
Hox genes are the master regulators of embryonic development for all animals, including humans, flies and worms. They decide what body parts go where. ... "We have exactly the same genes, and use them in exactly the same way," he says. "By understanding them in Drosophila, we can understand them in humans."
The study of genes is called genetics.
The answer is mentioned below.
What are genes?The genes are structural and the functional unit of DNA.
According to the question, Hox genes are the master regulators of embryonic development for all animals, including humans, flies, and worms. They decide what body parts go where. "We have exactly the same genes, and use them in exactly the same way," he says. "By understanding them in Drosophila, we can understand them in humans."
For more information about the genes, refer to the link:-
https://brainly.com/question/14688752
plss helppp!!
Which of the following is an example of indirect evidence about Earth's
layers?
A. rock samples obtained by drilling
B. mantle rocks produced by volcanoes
C. changes observed in seismic wave data
D. data gathered from high-pressure lab experiments
Answer: I believe the answer would be C -- Changes observed in seismic wave data.
Explanation:
Geologists use rock samples as direct evidence about earth's layers, and they use seismic waves as indirect evidence to study the Earth’s structure.
I hope this helps!
Help me pls it’s due today
Answer: It's either B or C
Explanation:
a sound wave traveling through dry air has a frequency of 16 Hz, a wavelength of 22 m, and a speed of 350 m/s. When the sound wave passes through clouds of nitrous oxide, it’s wavelength changes to 16 m, while it’s frequently remains the same. What is it’s new speed?
How does nuclear power compare to coal, oil, and natural gas?
Explanation:
Nuclear Has The Highest Capacity Factor
That's about 1.5 to 2 times more as natural gas and coal units, and 2.5 to 3.5 times more reliable than wind and solar plants.
In kolhbergs conventional stage of moral development moral decisions are based on?
A) nature and nurture
B) society’s expectations and laws
C) trust or mistrust
D) attachment and temperament
Answer:
b
Explanation:
Help me now please!!!!!!!!
Which of the following does NOT cause desertification?
Select one:
a. Advancements of existing deserts
b. Overuse of cropland leading to soil degradation
c. Deforestation