The waste products of combustion leave the internal-combustion engine through the
Answer:
Exhaust valve
Explanation:
The function of the valve in internal combustion engine is to give a free passage to air in and out. The intake valve lets the fresh air into the engine while the waste products of combustion are eliminated through exhaust valve.
In cellular respiration, where do the high-energy electrons that move through the electron transport chain originate?
Answer:
The electrons are carried to the ECT by NADH and FADH+, which are reduced during glycolysis, pyruvate oxidation, and the Krebs cycle.
How do you know where the Big Dipper starts
Answer:
NORTH STAR AND THE LITTLE DIPPER
Finding the Big Dipper in the night sky is the easiest way to find Polaris, the North Star, located in the constellation Ursa Minor, the Little Bear. The Big Dipper rotates around the north celestial pole, and always points the way to the North Star
Explanation:
Answer: If you live at temperate latitudes in the Northern Hemisphere, simply look northward and chances are that you'll see the Big Dipper in your nighttime sky. It looks just like its namesake. Once you've found the Big Dipper, it's only a hop, skip and jump to Polaris and the Little Dipper.
A person eats a candy bar, and the sugar level in her blood gets very high. Her body releases insulin into her blood. The insulin causes extra sugar to be stored in the muscles, and the sugar level in the blood returns to normal.
Genetic drift and natural selection can both be mechanisms of evolution. However, they are very different mechanisms.
Explain how genetic drift is different from natural selection.
Answer:
The key distinction is that in genetic drift allele frequencies change by chance, whereas in natural selection allele frequencies change by differential reproductive success
Explanation:
Hope this helps
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During photosynthesis,light energy is converted to chemical energy
Answer:
True
Explanation:
Because during photosynthesis carbon dioxide is formed which is a chemical
Answer:
True
Explanation:
Photosynthesis is the process in which light energy is converted to chemical energy in the form of sugars. In a process driven by light energy, glucose molecules (or other sugars) are constructed from water and carbon dioxide, and oxygen is released as a byproduct.
Explore: Use the Gizmo to create three more carbon paths, each starting and ending in the atmosphere. Label each location with A for atmosphere, B for biosphere, G for geosphere, or H for hydrosphere. (You can also use P for the anthroposphere if you like, or just include it in the biosphere.)
Carbon-dioxide gas is essential for maintaining life on earth.
Carbon-dioxide present in the atmosphere comes from breathing of animals and volcanic eruption. this carbon-dioxide absorb by the plants (biosphere) in the process of photosynthesis. This carbon-dioxide is incorporated in the soil (geosphere) with the dead bodies of plants and animals and decomposition of these bodies occurs and carbon-dioxide gas again releases in the atmosphere. Carbon-dioxide gas is also dissolved in the water bodies where it is required by the plants for photosynthesis and made food for the marine animals.
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according to the Nationalinstitute on drug abuse 2013 survey how much is spent annually in workplace because of drugs
Answer:
600
Explanation:
According to the Nationalinstitute on drug abuse 2013 survey, 600 dollars is how much is spent annually in workplace because of drugs.
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The average distance between the center of the Earth and the center of its moon is 3.84 x 108 m. The mass of the earth is
5.97x1024kg. What is the orbital speed and period of Earth's moon?
V, - 1.02 x 10 m/s
V, = 3.26 x 10ʻm/s
T= 2.37 x 10° s = 27.4 days
T = 6.24 x 106 s = 82.2 days
b. V, = 2.03 x 10²m's;
d. V, - 1.02 x 10 m/s;
T = 3.67 x 10ºs = 39.4 days
T = 4.82 x 10Ⓡs = 57.3 days
Answer:
T = 2.37 x 106 s = 27.4 days would be the answer
Explanation:
____which are carried on chromosomes, are the organized instructions for producing both RNA and _____that are necessary
for all processes of life.
A) Genes; DNA
B) DNA; proteins
C)Genes; proteins
D)DNA: nucleic acids
Answer:
A
Explanation:
genes are passed down from parent to parent, and when a question asks for "RNA and - ' its almost always DNA
Genes which are carried on chromosomes, are the organized instructions for producing both RNA and DNA that are necessary for all processes of life.
What are nucleic acid?Biopolymers and macromolecules called nucleic acids are necessary for all known forms of life. They are constructed of monomers called nucleotides, which are composed of a nitrogenous base, a phosphate group, and a 5-carbon sugar. Deoxyribonucleic acid and ribonucleic acid are the two primary classes of nucleic acids.
Nucleic acids perform a wide range of tasks, including cell development, the processing and storage of genetic information, the synthesis of proteins, and the production of energy cells.
Therefore, option (A) is correct.
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The changes in composition in an area over time is called
Answer:
Ecological Succession.
Explanation:
1. One of the central themes in biology is how DNA, RNA, and proteins are related. Describe how genetic
information is passed among those types of molecules. Include the results of the processes of
transcription and translation
Answer:
Transcription uses a strand of DNA as a template to build a molecule called RNA. The RNA molecule is the link between DNA and the production of proteins. During translation, the RNA molecule created in the transcription process delivers information from the DNA to the protein building machines.
Explanation:
How does increased sediment loads adversely affect coral reefs?
A- sediment reduces photosynthesis by zooxanthellae
B- nutrients stimulate zooxanthellae growth
C- sediment makes corals Brittle
D- sediment lowers oceanic pH
E- sediment kills parasites
Which of these is a function of the placenta?
A To deliver the blastocyst after childbirth
B. To carry nutrients to the cells of the uterus
C. To carry wastes away from the embryo
O D. To develop into fetal reproductive tissues
Answer:
c
Explanation:
What is source of the DNA for the strawberry plant?
It was absorbed from the soil
It was passed on from the parent plant
It was created by the plant using sunlight
It was borrowed from animals that feed on the plant
Answer:
passed on by parent plant
Explanation:
both parents dna are present half of fathers and half of mothers
What is the difference between a trapezoid and a rhombus? A) A trapezoid is a parallelogram and a rhombus is not. B) A rhombus always has 4 equal sides and a trapezoid does not. C) A rhombus always has 4 right angles and a trapezoid does not have to. D) A rhombus never has 2 sets of parallel sides and a trapezoid always does. Submit
Answer:B
Explanation: A rhombus has 4 equal sides constantly where as a trapezoid can have up to 4 different sides
Answer:
idk lol wth
Explanation:
4. How did the Black Death affect families?
Answer:
they did not like what the officer did to that man he told him he can't breath but the cop did not listen families are disappointed and scared
Local authorities need to be on the lookout to stop hazardous waste _____ who get around laws using tactics such as bribes, false permits, and mislabeling of hazardous wastes.
Group of answer choices
A.producers
B.manufacturers
C.emitters
D.users
E.smugglers
Answer:
A and B
Explanation:
The correct options to fill the gap would be A and B.
Wastes are generated mainly from production or manufacturing processes. Hence, those that can try to get around laws to indiscriminately pollute the environment would be producers or manufacturers of goods.
Therefore, the correct options are A and B.
Hairy stems (H) are dominant in tomato plants. Hairless stems (h) are present in tomato plants that are homozygous recessive for this trait. What genotypic ratio would we expect to see in the offspring of two heterozygous hairy stem plants? Answers are in the picture.
Answer:
The answer is A
Explanation:
A geneticist collected a population of 100 peppered moths. 36 were dark (DD or Dd) and 64 were light (dd). The alleles present in each moth were determined. Out of the 200 alleles for this gene present in this population, the gene pool contained 40 dark D alleles and 160 light d alleles. What are the allele frequencies for the two alleles in this population?
A) D = 0.36; d = 0.64
B) D = 0.50; d = 0.50
C) D = 0.25; d = 0.75
D) D = 0.20; d = 0.80
Answer:
D) D = 0.20; d = 0.80
Explanation:
Ok, so first off, we know that the number of homozygous recessive individuals is 64. So 64/100 is the q^2 value. The q value is the square root of that: it is 0.8. Because p + q has to always equal 1, the p value is then 0.2, and the p^2 value 0.04.
So, we know that the heterozygotes had to be 0.16 of the population (1-0.8-0.04 = 0.16).
d has to equal 0.8 because it is the number of recessive alleles in the population, and they give you this too. D is 0.2.
which statement is true of prokaryotes but not eukaryotes
A. Some are multicellular
B. They have no ribosomes
C. They have no water
D. All are unicellular
Answer:
c sorry if u get it wrong
which example best describes how an X-ray machine works?
20 A QUESTIONS
O
Switching a flashlight on and off to transmit a message
0
Removing the batteries from a flashlight to keep a room dark
O Putting your hand in front of a flashlight beam to make a shadow
O
Shining a flashlight beam on a mirror to brighten a room
SUBMIT
Explanation:
putting hand in front of flash light
Answer: C
Explanation:
I just answered the question on a p e x
Chromosomes are structures of nucleic acids and proteins found in the nucleus of a cell. They contain all the genetic information of an organism. Humans have 46 pairs of chromosomes, with half from each parent. Which of the following best describes why the offspring will receive only half of the parents' chromosomes?
A)Chromosomes assort independently, and crossing-over occurs.
B)Gametes contain homologous pairs from the mother and father.
C)Diploid eukaryotic cells become haploid before fertilization.
D)The cell cycle stops, allowing for extra haploid cells to be made.
Answer:
C
Explanation:
I am pretty sure answer is C.
Chromosomes are structures of nucleic acids and proteins found in the nucleus of a cell, and they contain all the genetic information of an organism because chromosomes assort independently and crossing-over occurs, as in option A.
What is the function of the chromosome in meiosis?The chromosomes present in the parent cell duplicate in the S phase of the cell cycle, and in the meiosis phase of the cell cycle, the daughter chromatids segregate and form four haploid cells from the parent cell. The child or offspring is the result of the fertilization of the sperm and the ovum, and the zygote is formed from the process that develops into the offspring, and the zygote has half the genetic contents of the paternal and maternal parents. In this way the chromosomes separate in the meiosis.
Hence, Chromosomes are structures of nucleic acids and proteins found in the nucleus of a cell, and they contain all the genetic information of an organism because chromosomes assort independently and crossing-over occurs, as in option A.
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Where are the strongest jet streams located?
A.over high altitudes
B.over land
C.in the lower atmosphere
D.far away from the equator
Answer:
A. over high altitude
Explanation:
the polar jets are the strongest jets, in higher altitudes
The human body contains many glands, including the pituitary, thymus, and thyroid. The table below shows the functions of two of these glands. Function 1. Associated with the immune system and is largest in size during teenage years 2. Produces hormones which are required for growth and various body functions Which of the following matches correctly the names of the glands with their functions? Group of answer choices Pituitary—Function 1; Thyroid—Function 2 Thyroid—Function 1; Thymus—Function 2 Thymus—Function 1; Pituitary—Function 2 Pituitary—Function 1; Thymus—Function 2
Answer:
The answer is B
Explanation:
I had did research on both explanations and Thymus is 1st and Pituitary is 2nd. I had looked this question up and yours is a bit different then mine, but I thought I'd stop and help you. :)
Answer:
B
Explanation:
im doing the test now
What are the different sensory structures and what are each of them able to
detect?
Answer;
Chemoreceptor,Thermoreceptors,Mechanoreceptors,Photoreceptors
Explanation:
Chemoreceptors detect the presence of chemicals
Thermoreceptors detect changes in temperature
Mechanoreceptors detect mechanical forces.
Photoreceptors detect light during vision.
Which paragraph in the section "Speciation" BEST supports the idea that animals can adapt in ways that allow multiple species to survive together in a common area?
Question 2 options:
A) Sometimes, an organism develops an adaptation or set of adaptations that create an entirely new species. This process is known as speciation.
B) The wide variety of marsupials in Oceania is an example of how organisms adapt to an isolated habitat. Marsupials, mammals that carry their young in pouches, arrived in Oceania before the land split with Asia. Placental mammals, animals that carry their young in the mother's womb, came to dominate every other continent, but not Oceania.
C) Koalas, for instance, adapted to feed on eucalyptus trees, which are native to Australia. The extinct Tasmanian tiger was a carnivorous marsupial and adapted to the niche filled by big cats like tigers on other continents. Marsupials in Oceania are an example of adaptive radiation, a type of speciation in which species develop to fill a variety of empty ecological niches.
D) The cichlid fish found in many of Africa's lakes exhibit another type of speciation, sympatric speciation. Sympatric speciation is the opposite of physical isolation. It happens when species share the same habitat. Adaptations have allowed hundreds of varieties of cichlids to live in Lake Malawi. Each species of cichlid has a unique, specialized diet: One type of cichlid may eat only insects, another may eat only algae, another may feed only on other fish.
Answer:
I will say C
Explanation:
Sorry if I am wrong.
Paragraph in the section "Speciation," BEST supports the idea that the Koalas, for instance, are adapted to feed on eucalyptus trees, which are native to Australia, and that this is present in the option C.
What is the significance of the koalas?They have various importance, such as being culturally significant in Australia, bringing economic benefits to the area, being important for scientific research and understanding marsupials, and so on. They are considered a vulnerable species due to habitat destruction, but they play an important role in the ecosystem as they are herbivores and help control the growth of eucalyptus trees.
As a result, paragraph in the section "Speciation," BEST supports the idea that the Koalas, for instance, are adapted to feed on eucalyptus trees, which are native to Australia, and that this is present in the option C.
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How does the need for resources affect the relationships organisms in an ecosystem?
Answer:
The need for resources will make the organisms competitive in their ecosystems.
what is the difference between a breed and a species?
Answer:
A breed is an artificially selected group of animals. A species is a naturally selected group of organisms.
Explanation:
The scientific name of an organism is made up of what two group names?
Answer:
Genus species
Explanation:
Scientists use a special naming system for organisms. It is made up of two words.
The first word is the genus of the organism and the second word is the species of the organism.
The first word, which is the genus, is always capitalized, but the second is not. Both words are italicized if possible, but if you are handwriting the scientific names, an underline suffices.
An example of a scientific name for a house cat is:
Felis catus
