1 7.1.2 Exam: Semester Exam Question 36 of 42 What tends to happen to a sound wave as air temperature increases? O A. The wave's speed decreases. B. The wave stands still. . O C. The wave vibrates more slowly . D. The wave's speed increases
Answer:
D
Explanation:
The wave's speed increases when air temperature increases. Therefore, option (D) is correct.
What are sound waves?As air temperature increases, the speed of sound waves in air also increases. This is because air molecules move more quickly at higher temperatures, and the faster-moving molecules can transmit the sound energy more quickly. As a result, sound waves will travel faster through hot air than through cold air.
Conversely, as air temperature decreases, the speed of sound waves in air will decrease as well. This property of sound waves can have practical implications, such as in designing concert halls or sound systems where the temperature of the air needs to be taken into account in order to achieve optimal sound quality.
Learn more about sound waves, here:
https://brainly.com/question/21995826
#SPJ7
15wanted to know whether the eating behavior of goldfish is affected by music. He set up a fish tank. Every day played music for the fish and measured how much fish ate. What is missing from this experiment?
A. a control groups
B. a measurable result
C. different types of fish
D. an outcome variable (dependent variable)
Answer:
A
Explanation:
A is correct; control group is missing as he would want to know how the goldfish ate normally without music
B is incorrect; amount that the fish ate is a measurable result
C is incorrect; the experiment is only about goldfish
D is incorrect; the amount of food that the fish ate is the dependent variable
Which is NOT true of the purpose of the alcohol in Gram staining?
A. It binds the crystal violet into the cell wall.
B. It decolorizes the cells.
C. It dries out the cells.
D. It shrinks the cell wall.
Answer:
the answer to this question is a
The statement which is not true of the purpose of the alcohol in Gram staining is as follows:
It binds the crystal violet into the cell wall.Thus, the correct option is A.
What is Gram staining?Gram staining may be defined as a methodology that is utilized for the classification of bacterial species such as gram-positive and gram-negative.
In gram staining, ethyl alcohol or acetone is used as a decolorizer that dehydrates the peptidoglycan layer. It involves the shrinkage or tightening of the cell wall.
In this process, the large crystal violet-iodine complex is not able to puncture this tightened layer of peptidoglycan.
Therefore, the correct option for this question is A.
To learn more about Gram staining, refer to the link:
https://brainly.com/question/13561218
#SPJ2
What does each person do just before becoming infected?
I would think they would probably hide from the people that are infected.
The Vertebrata have the least number of species in it. True or false
Answer:
False
hope it is helpful to you
i need help like asap thank you very much
Answer:
releases
Explanation:
trace the pathway of impulses through the nervous system in response to feeling rain on your skin?
Sensory neuron(s) then transmit information from the sensory receptor(s) to the Central Nervous System
Explanation:
These receptors are located all over the body but some types of receptors are in specific areas of the body (e.g. taste receptors in the mouth).
Sensory neuron(s) then transmit information from the sensory receptor(s) to the Central Nervous System (i.e. the brain and spinal cord, sometimes referred to in the abbreviated form: C.N.S.). This is happens because peripheral nerves all connect to the spinal cord via the network of nerves within the nervous system.
The information so received by the C.N.S. is further transmitted by relay neurone(s) with the C.N.S.
Hope THis Helps x
which kingdom has 2 kingdoms that are all unicellular?
Answer: Prokaryotes, archaea, protists, fungi, algae.
Explanation:I don’t think there are any single celled organisms that are today classified as animals. So basically I just left the animal kingdom out. Both metazoans and sponges are for the most part multicellular.
Vestigial structures, such as hip bones in whales and appendixes in humans, are those that have little or not function for the organism. What is the most likely reason for this loss of function over time
Why do you think Europeans—and especially the English—are most affected by asthma?
Answer: Asthma is one of the most frequent chronic conditions in Europe, affecting more than 30 million Europeans – a number that is still growing.
"At some stage in the future almost half of the population may suffer from an allergic disease and asthma will be a considerable proportion of this," said Nikolaos Papadopoulos, professor of allergy and pediatric allergy at the University of Athens, in an interview. He added that it is also a global phenomenon.
Asthma is a chronic disease of the airways that makes breathing difficult. An asthma attack inflames and narrows the airways that carry oxygen to the lungs, leading to coughing, wheezing, shortness of breath, and chest tightness. Its prevalence has been linked to industrial development.
Explanation: there you go UwU
Drag each item to the correct location. (2 points)
Geocentric Model
Heliocentric Model
Options:
::
The orbits of the planets are circular,
:: Includes eight planets.
:: The Sun is at the center of the solar system.
:: The orbits of the planets are elliptical
! Includes five planets.
:: Earth is at the center
the solar system
Answer:
Geocentric ModelEarth is at the center
Includes five planets.
The orbits of the planets are circular,
Heliocentric ModelThe Sun is at the center of the solar system.
The orbits of the planets are elliptical
Includes eight planets.
The solar system
Explanation:
The main difference between the heliocentrical and geocentrical model is that in the first one, the Sun is in the center and the planets are around it, while in the second model, the Earth is in the center and the Sun, the moon, and the planets are around it.
Also, the geocentrical model stated that there were five planets, Mercury, Venus, Mars, Jupiter, and Saturn. These planets had circular orbits. In other words, they have a circular motion around the Earth, and this one was still in the center of the system.
In the heliocentric model, there are eight planets, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, and they all rotate in elliptical orbits around the Sun. The Heliocentric model is also called the solar system since its central star is the Sun, and the planets are around it.
What structure is common to all domains of living organisms? A. DNA B. Nucleus. C. Cell wall d . Flagella
Answer:
A. DNA
Explanation:
Even Bacteria and Archaea have a single circular chromosome - a piece of circular, double-stranded DNA located in the nucleoid (no nucleus).
what is produced by mitosis?
When a parent cell splits to create two identical daughter cells, the process of the nuclear division known as mitosis takes place in eukaryotic cells.
What is meant by mitosis?
DNA, a molecule found on chromosomes, is the genetic information carrier. They are linearly arranged genes that are present in couples in the cell's nucleus. Genes also are arranged in pairs, and each pair produces a coding that results in the production of a distinct protein.
Mitosis is a sort of cell division that makes sure each new daughter cell formed when a cell splits possess the same genomic structure.
Two cells referred to known as daughter cells are created during mitosis. Any newly formed daughter cells must have genetic material that is similar to that of the parent cell, and the number of chromosomes must stay constant.
Therefore two identical daughter cells are produced as a result of mitosis.
Learn more about mitosis here:
https://brainly.com/question/26678449
#SPJ1
Name the described body systems and fill in the missing information. [30 points] :)
Answer:
The skeletal system and the muscular system
Explanation:
our organs and provides fatme to help the body keep its shape .It also stores important substance such as WBCs to give it strength.
An object at rest will ____________________ if no outside forces are applied
A. stay at rest
B. increase velocity
C. decrease mass
Answer:
A. Stay at rest
Explanation:
Since no other forces are applied to the object, there is nothing that can move the object since the forces are balanced.
Answer:
A. stay at rest
Explanation:
This is true because for example if a feather is left alone it will not move but if an outside force such as your hand or the wind applies force on it it will move.
What do you think would happen if producers did not exist ?
1) Food Chains connected to the Rat
1
2.
3
None of these answers
Answer:
THe answer is the c because the chemicals become the g and the a so when chem two a is reslopp then u get c. :)
Explanation:
Answer:
need more informaiton
Explanation:
in humans, normal people are dominant (X) to people with x-ray vision. If a mutant with x-ray vision has a child with a woman heterozygous for x-ray vision what is the chance that one of their children will have x-ray vision?
Answer:
2/4 or 50%
Explanation:
Heterozygous means the organism has two different alleles, so the genotype of the woman is Xx
The mutant's genotype is xx, because in order for a recessive trait to be expressed, there needs to be two recessive alles
Use the genotypes of the parents to create a punnett square (shown in image) to find the possible genotypes of their children
To chance of a phenotype is determined by how many of the possible genotypes will express the phenotype of x-ray vision and how many genotypes there are in total. The chance can be presented like this:
2/4
2 is the number of x-ray children
4 is the total number of children
To find the percentage you can do 2 ÷ 4 × 100
And that will give you the answer of 50
So the percentage is 50%
The eggs of silk worm collected and kept in
refrigerator
in the winter season
Answer:
The eggs are kept in a cool place so that they can be stored for a long time. In a favourable condition,they hatch into larva. Larva are produced in about 2 weeks from eggs at a temperature of 18 to 25 degree Celsius
Explanation:
Describe the difference between how genetic engineering and artificial selection influence traits.
Answer:
Explanation:
Artificial selection selects the traits that are already present in the animal or human. On the other hand genetic engineering creates new/different traits.
In artificial selection scientist only breed the desirable traits. With genetic engineering use DNA to specifically manipulate the genome. Example: A way to change the genome is to enter genes from another organism.
Hope that helped!
Which of the following is the best definition of an opinion? Information that cannot be proven true or false. C. Something that b. Information that is incorrect. d. An argument.
Nyatakan empat contoh kegunaan air sebagai pelarut semesta dalam domestik dan industri pembuatan
Explanation:
der ar ani mankasaklam sugwa sa kalmi tuagla badrasi
Explain the various phase of menstrual cycle with reference to changes in ovary and uterus and hormonal cycle.
Answer:
In the follicular phase, the follicles grow inside the ovary. The ovulatory phase is the time of greatest fertility for women. In it, estrogen levels peak just before the egg is released. In the luteal phase, after ovulation the follicular structure that remains in the ovary reorganizes and becomes a gland known as the corpus luteum. The self-determined life of the corpus luteum causes it to degenerate after 14 days and end a menstrual cycle. At the end of the luteal phase, progesterone and estrogen levels drop and menstruation occurs.
Explanation:
The follicular phase is where follicles develop (fluid-filled cavities in the ovary that contain an undeveloped egg) that will eventually house the egg. For the development of follicles, the body sends a signal to the brain to start the production of follicle stimulating hormone (FSH), the follicles begin to develop and produce estrogen. In the ovulatory phase, the level of estrogen in the body continues to rise, causing a rapid rise in LH. This increase causes the secretion of proteolytic enzymes that will degrade the follicular tissue allowing the maturation process of the ovum and its release to finish, a fact known as "ovulation". Ovulation usually occurs between 24 and 36 hours after the LH surge, so luteinizing hormone is a good factor for measuring the period of maximum fertility and knowing the fertile days of the woman. In the luteal phase, the corpus luteum develops that will last until a possible pregnancy or menstruation occurs, starting the next cycle. The egg, after being released, travels through the fallopian tube to the womb. It can survive up to 24 hours and sperm up to 5 days inside the uterus, therefore the days before ovulation and the day of ovulation itself, which can be calculated with the ovulation calendar, are those of maximum fertility and higher chances of pregnancy. After ovulation, the follicle begins to contract but continues to produce progesterone and begins to produce estrogen in order to continue preparing the uterus to receive the embryo.
Please help me to solve this question.
Answer:
i. Liver
ii. Heart Muscle, involuntary
iii. The cardiac muscle cell has one central nucleus, like smooth muscle, but it also is striated, like skeletal muscle. The cardiac muscle cell is rectangular in shape. The contraction of cardiac muscle is involuntary, strong, and rhythmical.
Explanation:
can someone explain it or maybe give me the answer, im desperate :)
20.What will happen to the population when the death rate is larger than the birth rate?
a. Shrink
b. Grow
a. Shrink
When more people die than are born, number of people will decrease.
according to the passage an advantage of selective breeding is
The advantage of selective breeding is the ability to produce offspring with more desirable traits. Therefore, option A is correct.
What is selective breeding?Choosing parents with specific traits to breed with one another in order to generate kids with more desired traits is known as selective breeding. For thousands of years, humans have carefully bred a variety of animals and plants, including crop species that produce more.
Through artificial selection, several fruits and vegetables have been enhanced or even created. For instance, selective breeding was used to create broccoli, cauliflower, and cabbage from the wild mustard plant.
offspring can be produced with more desirable characteristics by selective breeding. Therefore, option A is correct.
Learn more about selective breeding, here;
https://brainly.com/question/16436300
#SPJ6
5 rules on how a feigned creature inherits traits
Answer:
Inherited traits include things such as hair color, eye color, muscle structure, bone structure, and even features like the shape of a nose. Inheritable traits are traits that get passed down from generation to the next generation. This might include things like passing red hair down in a family.
Explanation:
What is found in cytoplasm?
Check all that apply.
Organelles
Cellular adhesion molecules
Cytoskeleton
Cytosol
Cell membrane
Answer:
organelles
cytosol
mark me brainliestt :))
Of the terrestrial planets, Earth and Venus are
Which phrase best completes the sentence?
O about the same size
O different in density
O similar to gas planets
O very different in size
Answer:
A. About the same size
Explanation:
Venus is often named as Earth's twin because both worlds share a similar size, surface composition and have an atmosphere with a complex weather system. Both planets have almost the same size and density.
Hope this helps!
Earth and Venus are about the same size. So, the correct option is (A).
What is Earth?Earth is the third planet from the Sun and the only celestial object known to harbor life. Only Earth maintains liquid surface water in the Solar System. About 71% of Earth's surface is made up of ocean, which dwarfs Earth's polar ice caps, lakes, and rivers.
Earth consists of land, air, water and life where land consists of mountains, valleys and flat areas and air is composed of various gases, mainly nitrogen and oxygen. Water includes oceans, lakes, rivers, streams, rain, snow, and ice.
Venus is known as our sister planet because of the similarity in size, mass, density, and volume that both planets are believed to share a common origin at the same time from a condensed nebula about 4.5 billion years ago.
Thus, Earth and Venus are about the same size. So, the correct option is (A).
Learn more about Earth, here:
https://brainly.com/question/12041467
#SPJ6