Answer:
The tobacco mosaic virus infects tobacco and lots of other closely related species like tomatoes and peppers. It is transmitted by contact between plants, either naturally or on the hands of farmers. It infects the chloroplasts of plant leaves and changes their colour from green to yellow or white in a mosaic pattern.
How does independent assortment increase genetic variation in Meiosis?
Answer:
Independent assortment produce new combinations of alleles.
Explanation:
In meiosis I, crossing over during prophase and independent assortment during anaphase creates sets of chromosomes with new combinations of alleles. Genetic variation is also introduced by random fertilization of the gametes produced by meiosis. It results in gametes that have unique combinations of chromosomes.
Which two statements describe force?
A. Force causes an object's motion to remain constant.
B. A force can have mass or weight.
C. Force is the ability to change an object's motion.
D. A force can be a push or a pull.
Answer:
D. a force can be a push or a pull and A.
which enzyme pairs corresponding nucleotides to a preexisting dna chain in order to synthesize a new strand of dna?
Answer:
✓ DNA polymerase
Explanation:
what are some examples of diffusion in living organisms
Answer:
Oxygen and carbon dioxide, dissolved in water, are exchanged by diffusion in the lungs:
oxygen moves down a concentration gradient from the air in the alveoli to the blood.carbon dioxide moves down a concentration gradient from the blood to the air in the alveoli.Answer:
oxygen moves down a concentration gradient from the air in the alveoli to the blood.
carbon dioxide moves down a concentration gradient from the blood to the air in the alveoli.
Explanation:
The biotic factors of the North American ecosystem that influence lodgepole pine populations are
A.
fire, pine beetles and fungus
B.
clear cutting by lumber companies and -25 oC winter temperatures
C.
the mountain pine beetle parasite and fungus
D.
warm dry summers and cold wet winters
Answer:
B
Explanation:
im pretty sure
how many days can sperm live inside a woman’s body
Answer:
up to 5 days
Explanation:
this is the right answer
If the black horse is homeozygous, what is its genotype?
Answer:
the genotype is BB.
Explanation:
the merger between _____ resulted in the first production-distribution-exhibition firm with a truly national theater chain.
The merger between Famous Players-Lasky and Balaban & Kat resulted in the first production-distribution-exhibition firm with a truly national theater chain.
Famous Players-Lasky in collaboration (merged) with Balaban & Katz that was a chicago-based theater chain who had a lot of large auditoriums in the Midwest. The merger brought about the first production distribution-exhibition firm with a truly national theater chain. It was later named Publix Theaters. Paramount-Publix became the firm's name.Conclusively, we can say that the merger between Famous Players-Lasky and Balaban & Kat resulted in the first production-distribution-exhibition firm with a truly national theater chain.
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How is the aftermath of the children’s Halloween prank an example of the novel’s themes of prejudice and false suspicion? Book Name To Kill a Moking Bird
The novel shows the example of prejudice and false suspicion after the children made a joke on Miss Tutti and Miss Frutti Barber.
In the novel a situation is presented in which the naughty and evil children enter the Barbers' living room and make a joke by taking all the furniture to hide them in a cellar.
Later, when the Barber sisters find out, they blame (without having seen who it was) Syrian fur sellers saying:
Miss Tutti was sure that the fur sellers who had passed through town two days ago had stolen her furniture.They were brown, she said. Syrians.According to the above, the Barber sisters had prejudices and false suspicions against the Syrians because only on suspicion they accused them of the theft of their furniture, without them having committed this fact.
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What are 4 facts about Earth's outer layer? Subject: Science 7th grade Plate motion.
a scientist is studying the various prokaryotic and eukaryotic species found floating in a sample of water taken from a marine ecosystem. which cellular component will be found in the widest range of organisms in the sample?
what would make the earth's plates stop moving
Answer:
Slab Resistance would make the earth's plates stop moving
Explanation:
Answer:
Brainiest plz and hope this answer helped let me know if you need any more help I am glad to help!
Explanation:
what would make the earth's plates stop moving?
If the earths mantel would be really cold then the earth's plates would stop moving.
The tails of the cell membrane are ____________ while the phosphate heads are ___________.
Hydrophilic, Hydrophobic
Hydrophobic, Hydrophilic
Flexible, Hydrophobic
Water Loving, Flexible
Explanation:
The tails of the cell membrane are __hydrophobic__ while the phosphate heads are __hydrophilic__.
I hope the following image helps to further explain the answer.
The tails of the cell membrane are hydrophobic while the phosphate heads are hydrophilic. The correct option is B.
What is the structure of cell membrane?The phospholipid bilayer, which forms a stable barrier between two aqueous compartments, is the membrane's fundamental structure. These compartments are the inside and outside of the cell in the case of the plasma membrane.
The cell membrane, also known as the plasma membrane, is found in all cells and serves to separate the cell's interior from the outside environment.
The membrane of the cell is composed of a semipermeable lipid bilayer. The cell membrane controls the transport of materials into and out of the cell.
The heads (phosphate) are polar, whereas the tails (lipid) are non-polar. The heads, which form the outer as well as inner linings, seem to be "hydrophilic" (love water), whereas the tails, which face the cell membrane's interior, are "hydrophobic" (water fearing).
Thus, the correct option is B.
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What are 2 characteristics of the plasma membrane?
Answer:
they have flexibility and they help transport materials in and out of a cell
Why does a plant produce more sugar after summer?
Answer:
Sunlight = Energy
Explanation:
Plants have chlorophyll that uses sunlight from the sun to create energy.
The energy is then used to change carbon dioxide from the air into sugars like glucose. The plant transports sugars into the tissues like roots, flowers and fruits so it can grow.
Answer:
Plants have chlorophyll that uses sunlight to gather energy. The energy is then used to change carbon dioxide from the air into sugars like glucose and fructose. ... They transport sugars throughout the plant and supply it to tissues like roots, flowers and fruits that depend on this sugar to grow.
Explanation:
Based on the data collected and what you have learned about osmosis and the three treatment options, rank the treatments from most effective to least effective. What do you predict?
Although I could not locate the options in order to provide a ranking, I can offer the insight that a hypertonic saline solution will be the most effective form of treatment.
I believe you are referring to the full case study which says :
"Your goal is to stop Clark's seizures by restoring equilibrium between the blood and the matrix. Based on the data collected and what you have learned about osmosis and the three treatment options, rank the treatments from most effective to least effective. What do you predict?"
A hypertonic saline solution is used to draw water out of cells by creating an increased concentration of solute in the blood, forcing the water out of the cell through osmosis.
Clark's seizures may be caused by Increased solute concentrations in the brain which forces water from blood to move into the brain, thus increasing the matrix pressure. This then causes the neurons to fire at an increased rate and leads to the seizures Clark was experiencing.
Hypertonic saline can be used to increase solute concentrations, in this case, Sodium, in the blood which forces water to move back into veins. Thus returning Clark to a balanced level of blood and matrix water levels, and may reduce his likelihood of seizures.
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Answer: A hypertonic solution would be most effective. Isotonic Saline would be least effective and so would Hypotonic.
Explanation:
Problem: How do the levels of reproductive hormones influence the human menstrual cycle?
You'll be needing a graph paper and the data below because I don't know how to screen shot with computer and used this link as the image and please give me correct graphing and results please finish it all and Ill give brainiest and 30 points.
Progesterone levels rise during the luteal phase of the ovarian cycle and the secretory phase of the uterine cycle. Menstruation occurs just after LH and FSH levels peak. Menstruation occurs after progesterone levels drop. Estrogen levels rise before ovulation, while progesterone levels rise after.
how do nonsteroid hormones differ from steroid hormones?
Answer:
Nonsteroid hormones act via signal transduction pathways and steroid hormones do not act via signal transduction pathways.
Explanation:
Most of the reactions by which energy from carbohydrates is released for use by the cell take place within the
A) Mitochondria.
B) Nuclei.
C) Ribosomes.
D) Vacuoles
Most of the reactions by which energy from carbohydrates is released for use by the cell take place within the MITOCHONDRIA. These organelles (mitochondria) are the energy centres of the cell.
Cellular respiration is a series of metabolic reactions by which the cell produces energy in the form of ATP by using the energy stored in the chemical bond of simple carbohydrates and oxygen.
Cellular respiration has three stages: glycolysis, the citric cycle and oxidative phosphorylation.
Glycolysis occurs in the cytoplasm, whereas the citric cycle and oxidative phosphorylation take place in the mitochondria.
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Answer:
A)mitochondria
Explanation: I will give you a easy explanation
what are the most likely question that will come in an exam
Question Types:
Multiple ChoiceTrue/FalseMatchingShort AnswerFill-in-the-blanksEssaysOral ExamsCheckboxesMultiple choice, objective response, or MCQ (for Multiple Choice Question) is a form of an objective assessment in which respondents are asked to select only correct answers from the choices offered as a list.
True/False tests contain statements that the student marks as being either true or false. In order to qualify as true, all parts of the statement must be true. In general, true-false tests check your knowledge of facts.
A matching question is two adjacent lists of related words, phrases, pictures, or symbols. Each item in one list is paired with at least one item in the other list. Matching may be considered to be a variant of multiple-choice in which more than one choice is correct.
While opinions may differ, most teachers believe a short answer question typically requires a "short" answer. That doesn't mean an answer lacking depth analysis or information. It simply means an answer that is concise and includes just enough information to accurately and fully answer the question being asked.
Fill in the Blank questions are not opinion-based, which means that learners must be able to use the information they have mastered during the lesson to correctly answer the question. Fill in the Blank questions usually contain a sentence or paragraph featuring a blank space.
Definition of the essay question: an examination question that requires an answer in a sentence, paragraph, or short composition Examples of the essay question in a sentence.
The oral exam (also oral test or viva voce; Rigorosum in German-speaking nations) is a practice in many schools and disciplines in which an examiner poses questions to the student in spoken form. The student has to answer the question in such a way as to demonstrate sufficient knowledge of the subject to pass the exam.
A Checkboxes question lets survey takers select multiple answers from a list of choices. Use this question when you want people to be able to choose more than one answer option in the same question. Jump to...
Website(s) Used for Research:
https://help.surveymonkey.com/articles/en_US/kb/Available-question-types-and-formatting-options
http://personal.psu.edu/bxb11/QuizQuestions/quizmatching.html#:~:text=A%20matching%20question%20is%20two%20adjacent%20lists%20of,in%20which%20more%20than%20one%20choice%20is%20correct.
https://help.surveymonkey.com/articles/en_US/kb/Checkbox#:~:text=A%20Checkboxes%20question%20lets%20survey%20takers%20select%20multiple,answer%20option%20in%20the%20same%20question.%20Jump%20to
What makes a successful Aquarium
Answer:
Im guessing animal control feeding the animals good glass and thickness also a strong bridge last is a passive shark
Explanation:
major difference between positive and negative feedback loops?
Answer:
Negative feedback loop-keeps in check
Positive feedback loop- increases quality of another variable
Explanation:
Which of the following is a population?
Answer:
D. All of the fish, bacteria, and mammals that live in a lake (i think)
What kinds of point mutations alter a gene's DNA sequence?Describe each of them.
what enzyme catalyzes the conversion of fructose-6-phosphate to fructose-1,6-bisphosphate?
What is a concentration of mineral fragments at the bottom of a streambed called? Choose the correct answer.
O nodule
O placer deposit
O native element
O hydrothermal solution
Answer:
B. Placer deposit
Explanation:
Quizlet called "7-1 Science Mineral Resources" with answers
Why does the brain of mammals keep track of the temperature of the skin and the blood?
Answer:
The thermoregulatory center in this gland regulates heat loss and production. This center is influenced by nerve impulses from receptors near the skin and the temperature of the blood flowing through it. When the environment is warm or hot, there are a variety of ways mammals stay cool..
Explanation:
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Y-your welcome in advance..
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The brain of mammals keeps track of the temperature of the skin and the blood so that they can regulate the cells and maintain homeostasis in the body relative to the outer environment.
What is the importance of homeostasis in the body?The body's homeostasis should always be maintained in order to keep the cells and organs active and able to perform their functions. Because the brain has different control centers, it keeps track of the skin and blood temperature because the brain can release different hormones depending on the situation. The lipid composition and arrangements of the cells change in the summer and the winter, and all these are possible due to the brain sending signals to cells.
Hence, the brain of mammals keeps track of the temperature of the skin and the blood so that it can regulate the cells and maintain homeostasis in the body relative to the outer environment.
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PLEASE HELP I NEED ANSWER RIGHT NOW ASAP. 100 POINTS TO WHOEVER ANSWERS FIRST AND ALSO BRAINLEST!!!!!!!!!!!!! :)
Look at the following graph, which shows the average number of offspring had by mice per year with certain traits. Based on the data, which traits are advantageous to the species?
Explanation:
The traits more sensitive noses is advantageous to the species
Temperatures on Mars reach as high as 20 °C and fall as low as –140 °C. That temperature is colder than anyplace on Earth. Temperatures on Earth vary, but they stay within a range of –89 °C to 58 °C. Based on this evidence, which physical property is responsible for the greater range of temperatures on Mars as compared to those on Earth?
A. mass
B. axial tilt
C. thin atmosphere
D. period of revolution
Answer:
c
Explanation:
thin atmosphere
All of the following are examples of genetic drift EXCEPT:
A. A beetle gets stepped on B. A rabbit gets swept away by a tornado
C. An elephant drinks a protozoa living in a puddle D. A light colored moth does not camouflage on a dark
colored tree and gets eaten by a bird
C. AN ELEPHANT DRINKS A PROTOZOA LIVING IN A PUDDLE.
HOPE IT HELPS YOU