Answer:
Sensory neurone
Explanation:
each reflex has a sensory neurone.The sensor may be the nerve endings of the sensory neurone
a convergent boundary is a location where tectonic plates move toward each other. which feature of the ocean floor is caused by one tectonic plate moving under another at a convergent boundary
a. a flat plain
b. a trench
c. a mid-ocean ridge
d. a continental shelf
Answer:
At convergent plate boundaries, oceanic crust is often forced down into the mantle where it begins to melt. Magma rises into and through the other plate, solidifying into granite, the rock that makes up the continents. Thus, at convergent boundaries, continental crust is created and oceanic crust is destroyed.
Explanation:
Answer: B. a trench
Explanation: I took the test and I also studied
The typical (diploid) cells of the body have 46 chromosomes; how many
chromosomes does each gamete have?
46
23
184
46 pairs
Answer:
if a person has 45 chromosomes they will get down syndrome
Explanation:
Imagine researchers following up on seeley's study brought some flat periwinkles appledore island into the lab to test for heritability. What results could they observe that would support the hypothesis that shell thickness is heritable in these snails?
Answer:
If thick-shelled snails have thick-shelled offspring and thin-shelled snails have thin-shelled offspring then this is good evidence that shell thickness is heritable.
Explanation:
Inheritance is a natural mechanism by which genetic information contained in the DNA sequence is passed from parents to offspring. Moreover, heritability is a measure of the genetic influence on the variation in a particular phenotypic trait (e.g., height, eye color, etc.) between individuals in a population. The values of heritability for a particular phenotypic trait range from zero (when all variation in a population comes from environmental factors and therefore is not heritable) to one (when all variation in a population comes from genetic factors and therefore is heritable). For example, in this case, if parental snails always have offspring with the same phenotype for the trait ‘shell thickness’, it would indicate that the heritability for this trait is equal to one, thereby evidencing that all of the variability for the trait 'shell thickness' comes from genetic differences.
Two dogs–a boxer and a poodle–were the first to have their entire genomes sequenced. The dog genome contains 2.8 billion2.8 billion base pairs across 3939 pairs of chromosomes. They have 19,00019,000 protein-coding genes, most of them with close counterparts in other mammals, including humans. What is the total number of chromosomes in a dog?
Answer:
78 chromosomes
Explanation:
Since the number of chromosomes in a dog are diploid, we have 2n chromosomes where n = number of chromosome pairs.
Since n = 39.
The number of chromosomes is 2n = 2 × 39 = 78 chromosomes
So, a dog has 78 chromosomes.
Where does most of the water that evaporates from the Earth come from?
A.
Oceans
В.
ponds
C.
rivers
D.
lakes
Answer:
A
Explanation:
What is the function of RNA in a cell?
Answer:
The central dogma of molecular biology suggests that the primary role of RNA is to convert the information stored in DNA into proteins.
hope this helps
have a good day :)
Explanation:
Answer:
The primary functions of RNA are as follows:
Facilitate the translation of DNA into proteins
Functions as an adapter molecule in protein synthesis
Serves as a messenger between the DNA and the ribosomes.
They are the carrier of genetic information in all living cells
Promotes the ribosomes to choose the right amino acid which is required in building up of new proteins in the body.
Explanation:
Natural selection is best described as
a. disruptive selection
b. stabilizing selection
С. a mechanism of evolution
d directional selection
Nonvascular plants have never evolved to the size of vascular plants, most likely because they lack Select one: a. a photosynthetic mechanism. b. an efficient mode of respiration. c. an efficient system for conducting water and minerals. d. nutrient and water absorption mechanisms. e. They lack all of these choices.
Answer:
The correct answer is c. an efficient system for conducting water and minerals.
Explanation:
Non-vascular plants lack the internal tubes or vessels that carry water and minerals or nutrients through the entire plant. Most of them are found in humid or submerged places, since this type of environment allows them to absorb water through the surface of their tissues. Non-vascular plants do not grow very tall due to the lack of structures normally associated with vascular plants. Non-vascular plants lack specialized vascular tissue (xylem and phloem) for conduction and internal support of water and food. Metabolites and other nutrients are transferred between and within cells by osmosis, diffusion, and cytoplasmic flow.
Our cells have many working parts that help the cell to survive and carry out its function. Which organelle releases energy in the cell necessary for all metabolic activities?
Answer:
Mitochondria
Explanation:
The mitochondria produce ATP, also known as energy. It is coined the power house cell.
which organisms would be the prey for the hawk?
Shrew, snake, and Insect-eating Bird
Hope this helped! :T
helpppppppppppppppppppppp
Answer:
o Glucose, which required light, water and carbon dioxide to form this substance
25. A cell has 20 amino acids. How many molecules of tRNA are in the cell?
1. Four
2. Three
3. More than 20
4. At least twenty
5. Fifteen
6. I do not know.
Answer:
I think no 3 will be the answer.
In cell one amino acid can bind with two or three different tRNA during protein synthesis in the translation process, hence 3 option is correct more than 20 molecules are found.
What is tRNA?Because they can read nucleic acid words (like mRNA codons) and transmit the relevant messages, tRNA molecules serve as translators of amino acids. for each of the 20 amino acids.
There is a tRNA some amino acids bind to 2 or 3 different tRNAs, so cells may contain as many as 32 different tRNAs. Possibility of more than one tRNA and more than one anticodon for an amino acid, there is often only one aminoacyl tRNA synthetase for each amino acid.
Enzymes known as transfer RNA (tRNA) synthetases are responsible for joining a particular amino acid to its associated tRNA in order to produce proteins at the ribosome.
Therefore one amino acid can bind with two different tRNA in a cell during translation, hence option 3 is correct.
Learn more about tRNA, here:
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Please hurry!!! and help!!
Best answer gets marked Brainliest!!!!
Question 1
Which statement best describes adaptation?
A)Adaptation is the process of species gradually changing over many generations
B)Adaptation is process of plant gradually changing over time
C)Adaptation is a trait that helps an organism survive and reproduce
D)Adaptation is a difference between individuals of the same species
Answer:
C
Explanation:
Process of elimination
A= Evolution
B= Should have nothing to do with plants
C= Makes sense
D= Variation
Please give me 'Brainliest'
Which statement applies to all forms of sexual reproduction?
Choose 1 answer:
A All offspring from a mating look identical to the parents.
B
All offspring are clones.
C
Offspring receive genetic material from two gametes.
D
Offspring completely develop inside the mother's body before birth.
Please answer both I would mark as brainliest.
PLEASE HELP!!!
How many cells do you end up with in Meiosis?
A) 2
B) 1
C) 3
D) 4
Answer:
During meiosis , four daugther cells are produced
Answer:
4 cells. You end up with four cells.
Explanation:
Each daughter cell undergoes meiosis-II, producing two cells. In meiosis-II the separation of two chromatids occur so that equal number of chromatids (in fact chromosome due to duplication of genetic material) goes to each of the daughter cell.
Thus, at the end of meiosis-II, four daughter cells are formed. Each cell has half the number of chromosomes present in the diploid cell.
Burrowing owls sometimes build their nests in holes that were dug by prairie dogs, coyotes, or badgers and have been since abandoned. They sometimes line the nests with cattle or horse dung. Why
Answer:
To avoid extreme temperature and keep away predators.
Explanation:
Burrowing owls sometimes line the nests with cattle or horse dung in order to avoid extreme temperature. The cattle dung protect the Burrowing owls from extreme temperature of the surrounding so they make nests close to these cattle dung. These dung has many insects which is a food of Burrowing owls and this cattle dung also keep predators away from Burrowing owls.
what makes us also different
Why it is important to evaluate impact assessment studies before any development could be made on the environment?
Answer:
environmental and economic benefits can be archived such as reduce cost and of project implementation and design,avoided treatment / clean up costs and impacts of laws and regulations
Which of the following might be affected by the loss of a plant species?
a. Only organisms that feed directly off the lost plant species will be affected.
Other plant species will be affected, but no other organisms will.
Multiple organisms may be affected by the loss of a plant species.
d. No other organisms would be affected.
Please select the best answer from the choices provided
ОА
OB
ОС
OD
[tex]\sf\purple{C.\:Multiple \:organisms\: may\: be\: affected \:by \:the \:loss \:of \:a \:plant\: species.✅}[/tex]
[tex]\circ \: \: { \underline{ \boxed{ \sf{ \color{green}{Happy\:learning.}}}}}∘[/tex]
______ is when rocks are broken down into smaller pieces, then the pieces are moved to new places.
Group of answer choices
Weathering
Deposition
Landforms
Erosion
Answer:
Wethering
Explanation:
Because when it rains, the water gets into the rock day by day. And then it breaks down and gets washed away.
Where is the diaphragm located in relation to the lungs?
a) inferior
b) medial
c) superior
{ Relating to a crash course video called: Respiratory System Crash Course}
[any information would be very much appreciated! thank you :D]
Answer:
A. Inferior
Explanation:
If you're not familiar with anatomical terms, a quick summarization would be:
-Inferior: below
-Superior: above
-Medial: towards the midline of the body
Upon googling a picture for the diaphragm and lungs, you will see that the diaphragm is a muscle situated directly below the lungs. The phrase "located in relation to" is asking you specifically "when compared to". Therefore, since the diaphragm is located below the lungs, the answer would be inferior.
I hope this answer and explanation helped you understand this topic a little bit more!
The diaphragm is located in inferior to lungs.
What is diaphragm ?
In mammals, the diaphragm is a dome-shaped, muscular and membrane tissue that divides the thoracic and abdominal compartments.
It is the primary respiratory muscle.
The diaphragm gets contract and flatten up during we inhale, while the chest cavity expands.
Vacuum is created due to contraction, which pulls air into the lungs.
Exhalation relaxes the diaphragm and causes it to return to its domelike shape, pushing air out of the lungs.
So we can conclude that the diaphragm is the muscle that connects the chest cavity to the abdomen and it is the primary respiratory muscle, when one breathes in, the diaphragm muscle contracts, causing the lungs to expand and vice versa, and most importantly it located inferior to lungs.
Learn more about Diaphragm here:
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Explain how demagnetizing a magnet (or temporary magnet) affects the domains.
Answer:
So, heating a magnet disrupts the domain walls and it becomes easy for the magnetic domains, which are ordinarily lined up, to rotate and become misaligned. They are now less aligned and point in the opposite direction to their neighbors, causing a decrease in the magnetic field and loss of magnetism.
g Name and describe two possible pathogens that could be responsible. The spinal tap reveals the presence of Gram-negative cocci in the CSF. What would be the likely diagnosis
Answer:
Explanation:
The missing information describing the status of the sick sophomore student is attached in the image below.
The first question says we should name and describe the two possible pathogens responsible for such.
The two possible pathogens are:
Virus and Bacteria.
Recall that, the College student experienced a severe headache, nausea, vomiting, neck stiffness, and fever.
These highlighted symptoms are commonly caused by meningitis which is a bacterial infection.
Surgeons, surgical tools, and scrub nurses must all be sterile when doing surgery; If any infection arises provided all crucial measures were not taking into consideration, it would harm the patient and there will be a risk of meningitis as a result of this.
SImilarly, given that In the CSF, the presence of Gram-negative cocci is shown via a spinal tap; then the likely diagnosis would be that:
The patient has suffered from Neisseria meningitis.
This is because Gram-negative cocci are the most prevalent cause of infection in persons of this age group and In the Gram stain test, it has a dark red color.
Tibetans' physiological adaptations make them less likely to suffer from (1 point)
O blood clots.
O altitude sickness.
O pulmonary hypertension (or high blood pressure).
O heart attacks.
Answer:
1. More efficient hemoglobin in the blood
2. Altitude sickness*
3. Hotter temperatures during the summer months...
4. Lower oxygen levels.
5. The positive effects outweigh the negative effects in certain environments.
Explanation:
Hopefully, this helps someone out ♡
High Altitude Living Quick Check
Tibetans' physiological adaptations make them less likely to suffer from pulmonary hypertension (or high blood pressure). So, the correct option is C.
What do you mean by Adaptations?
Adaptations may be defined as the evolutionary process where an organism becomes better suited to its habitat, in order to survive and reproduce in it.
Tibetans are adapted to high altitudes by producing fewer red blood cells. They have greater hypoxic and hypercapnic ventilatory responsiveness. They have large lungs, and greater lung diffusing capacity. This leads them less likely to suffer from pulmonary hypertension.
Therefore, Tibetans' physiological adaptations make them less likely to suffer from pulmonary hypertension (or high blood pressure).
To learn more about Tibetans, refer to the link:
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Question 9 (2 points)
The four major biogeochemical cycles are the carbon cycle, the water cycle, the
____ and the _____. Fill in the blanks
Answer:
Nitrogen and the Oxygen cycle :)
Explanation:
Please select the word from the list that best fits the definition
An echinoderm that is covered with movable spines and that eats seaweed
sea urchin
sea star
brittle star
sea cucumber
echinoderm
Answer:
echinoderm I'm pretty sure but I'm not 100% so if I get it incorrect I'm sorry
What are the organelles that transport, store and recycle resources within the cell?
In the trp operon, tryptophan serves as a(n) ___________________, binding to the repressor and causing it to block to attachment of RNA polymerase.
a. operator
b. inducer
c. repressor
d. corepressor
e. gene
In the trp operon, tryptophan acts as a corepressor, binding to the repressor and inducing it to stop to attachment of RNA polymerase. Therefore, option D is correct.
What is trp operon?The trp operon is a group of genes in bacteria that are involved in the biosynthesis of the amino acid tryptophan. The operon is composed of five structural genes, trpE, trpD, trpC, trpB, and trpA. These genes code for the enzymes involved in tryptophan biosynthesis.
In the trp operon, the presence of tryptophan serves as a corepressor. The tryptophan molecule binds to the trp repressor protein, causing a conformational change that allows it to bind to the operator region of the operon.
This blocks the attachment of RNA polymerase to the promoter, preventing transcription of the genes involved in tryptophan biosynthesis. Thus, option D is correct.
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What is that chemical compound?
Answer:
A chemical compound is a chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds. A molecule consisting of atoms of only one element is therefore not a compound.