Answer:
open; depolarized
Explanation:
The photoreceptors, i.e., rods and cones, are specialized neurons located in the retina. These cells convert sunlight into electrochemical signals which are interpreted by the central nervous system. The cGMP-gated channels that are expressed in photoreceptor plasma membranes have a major role in this process by regulating the flow of sodium (Na+) and calcium (Ca2+) ions in the outer side of the membrane via changes to cyclic guanosine monophosphate (cGMP) levels which are induced by light. In the dark, high cGMP levels maintain channels in an open state, thereby allowing the passage of Na+ and Ca2+ ions to flow into the outer segment of photoreceptors in order to maintain them in a depolarized state.
bacterial spieces that retain the purple dye after decolorizer is added and appear blue or violet are referred to as
Answer:
gram positive is the answer
Explanation:
which of the following statements are true of the appendicular skeleton. a) The radius articulates with the ulna and the metacarpals. b) One hand contains 14 phalanges and one foot contains 13 phalanges. c) The scapula and clavicle attach the arm to the axial skeleton. d) The two hip bones are fused at the public midline. e) The tibia and fibula are to the leg what the radius and ulna are to the arm. f) The ilium, ischium, and pubis all contribute to the acetabulum to attach the tibia. g) Both the humerus and femur have projections for muscle attachment. h) The calcaneus supports the base of the thumb. i) The proximal tibia is part of the knee joint. j) The foot contains eight carpals and the wrist contains seven tarsals.
Answer:
u should have to short the question bcz its confusing....
Explanation:
If Earth didn't rotate, what would be one major obstacle life would have to
overcome?
Answer:
A major obstacle life would have to overcome is having only a limited amount of natural light and then the rest of the time is darkness.
The instructions for the traits of an organism are coded in the arrangement of
A. glucose units in carbohydrate molecules
B. bases in DNA in the nucleus
C. fat molecules in the cell membrane
D. energy-rich bonds in starch molecules
The correct answer is
B. bases in DNA in the nucleus
Why does prolonged exposure to UV light from the Sun or tanning beds increase the risk for getting skin cancer?
increased exposure to UV light decreases the risk of a mutation occurring
increased exposure to UV light increases the risk of a mutation occurring
increased exposure to UV light decreases the immune system function
increased exposure to UV light has no effect on the risk for getting skin cancer
Answer:
it increases chance of mutation of unrepaired skin cells that add up and create a tumoer
Explanation:
Answer:
B.) increased exposure to UV light increases the risk of a mutation occurring
Explanation:
I made 100% on the Chromosomal Changes quiz!
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Kai looks at a photo of herself with her parents. She notices that while her features are similar to her parents features.
they do not appear to be identical.
Which explains why this is the case?
Their DNA is made of different codon sequences.
Their DNA is made of four different bases.
Kai inherited more proteins from one parent than the other.
Kai inherited different amino acids from either of her parents.
Markthanditum
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Answer:
The awnser would be their DNA is made of different codon sequences.
Explanation:
The reason is Kai gets her sequences from both her mom and dad and so do her parents from their parents and on and on.
The statement that best explains the characteristics of Kai with respect to her parents is as follows:
Their DNA is made of different codon sequences.Thus, the correct option is A.
Why Kai does not appear to be identical to her parents?Kai does not appear to be identical to her parents because of the process known as variation. Variations may be defined as the process of differences in traits of individuals of a progeny from each other and from their parents.
The codon that constructs the characteristics of the DNA significantly depends on the triplet of amino acid sequences that alter the formation of proteins which governs all the properties and mechanisms of living organisms including their appearances.
Therefore, the correct option for this question is A.
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Once a standard curve has been prepared by plotting numbers of bacteria (CFU/mL) versus absorbance for one species of bacteria, this curve can be used for estimating bacterial numbers by measuring absorbance for any species of bacteria.
a. True
b. False
Answer:
b. False
Explanation:
The biomechanism of bacterial growth may be examined, by graphing cell growth (also known as absorbance) vs incubation time of the bacteria. A standard growth curve is the result of this process. The amount of turbidity in the broth culture is proportional to the number of microorganisms present.
A standard curve produced for a particular species can't be utilized to predict the number of bacterial counts for a different species due to the listed factors.
The rate of bacterial cell reproduction varies from a particular species to another.Varying species have different absorbance thresholds.the volume of a human brain is normally about 1200cm3. the osmolarity of solutes in the cerebrospinal fluid surrounding the brain is normally about 300mM. how does the volume of the brain change when the cerebrospinal fluid osmolarity drops to 280mM
Answer:
yesterday was a temporary password is goes by
Which polymers contain nitrogen?
A.starch
B.glycogen
C.cellulose
D.chitin
E.amylopectin
Answer:
Chitin
Explanation:
Chitin is a polysaccharide containing nitrogen
discuss the ecological importance of the dark phase
Answer:
In the dark phase (which takes place in the stroma), the ribulose bisphosphate added to the carbon dioxide gas (CO2) in the air results in the production of organic compounds, principally carbohydrates or sugars, whose molecules contain carbon, hydrogen, and oxygen.
Explanation:
la rosa pertenece a un grupo de arbustos que puede ser homocigotico para expresar el tallo alto (TT) y se crusa con una homocigotica de tallo (tt) sabiendo que el tallo alto es dominante sobre el tallo enano ¿cómo serán los genéricos y fenotipos de la F1 yF2
Three babies were mixed up in a hospital. After consideration of the data below, which of the following represent the correct baby and parent combinations?
Couple # I II III
Blood Groups A and A A and B B and O
Baby # 1 2 3
Blood Groups B O AB
A) I-3, II-1, III-2
B) I-1, II-3, III-2
C) I-2, II-3, III-1
D) I-2, II-1, III-3
E) I-3, II-2, III-1
Answer:
The correct option is C) I-2, II-3, III-1
Couple I, Baby 2Couple II, Baby 3Couple III, Baby 1Explanation:
Due to technical problems, you will find the complete explanation in the attached files
how to ensure validity in a investigation
Answer:
s ethrtzhzrt hj fxtj fxtExplanation:
jxft jxtfj
Answer:
through the scientific method until reaching a conclusion
The substances that are present after any chemical reaction are called what?
The substance that are present after any chemical
reaction are called as products
What kind of community does the photograph show?
A. Mountainous
B. Metropolitan
C. Coastal
D. Rural
Pls help
Answer:
That is a rural community.
The green area on the map shows the rural community. It is an open land with less population, houses and with lots of open spaces. It is rural community in the given image.
What are the types of community?There are so many options to live in a community.
The community can be of following types:
Rural community: Here houses are made very far from each other. It has open land spaces with less density of population.Urban community: These are located in cities. In this type of community, people lives in very close proximity.Suburban community: This community is a mixture of urban and rural community.Thus, the given paragraph is of rural community.
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(a) Describe why DNA replication is said to be a semiconservative process. Explain how random mutations such as those in pathogens with a mutator phenotype may arise in the DNA of an organism.
Answer:
DNA replication is semi-conservative because each helix that is created contains one strand from the helix from which it was copied. The replication of one helix results in two daughter helices each of which contains one of the original parental helical strands.
A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke. ... Mutations can also occur as the result of exposure to environmental factors such as smoking, sunlight and radiation.
Btw :
stay safe! :3
(a) In order to understand why the replication of DNA is said to be semi conservative, there is a need to understand what really goes on during replication.
During replication, the two strands of the DNA first become separated.Each strand then makes a complementary copy of itself.The original double strand does not reform, instead, the old strands each forms a double strand by coupling with their newly synthesized complimentary strands.The fact that the 2 double strands DNA that forms at the end of the replication process each consist of one old and one newly synthesized strand is why replication is said to be semi conservative. The old strands remain conserved but are now separated into new double strands.
(b) Random mutations such as those in pathogens with a mutator phenotype may arise in the DNA of an organism due to a host of factors:
mistakes during replicationmutation due to external factors such as chemicals, UV radiation, etc.When this happens, the DNA sequence is altered and this alteration creates one or more phenotypic effects.
More on DNA replication and mutation can be found here: https://brainly.com/question/10787
does skim milk contain roughage?
How is blood different after it is pumped through the capillaries in the intestines?
Answer: nutrients are absorbed then it goes into the bloodstream through capillaries. These nutrients include acids, vitamins and fatty acids
Explanation:
the answer is above
How much of your dna do you think is the same as your friends dna ?
Answer:
E
Explanation:
Most of our DNA determines that we are human, rather than determining how we are different from any other person. So it is not so surprising that the DNA of any two human beings is 99.9 percent identical.
Food chains end with a species that…
PLS HELP TIMES TEST I HAVE 49 MINUTES LEFT AND THERES 41 QUESTIONS IM ON 14
Answer:
1: The mRNA would not be sythensised
Explanation:
RNA polymerase - used in transcription to initiate replication of mRNA.
If mutated then it will result to no mRNA synthesied????
Which of the following are characteristics of Ascomycota? Check all that apply.
flagellated spores
spores produced in the ascus
lack reproduction phase
important in the food industry
important in the digestion of animals
can cause disease in plants
can cause disease in animals
2. spores produced in the ascus
4. important in the food industry
6. can cause disease in plants
Explanation:
hope this helps :)
Ascomycota is the phylum of fungi which produce spores in the ascus, important in the food industry, and can cause disease in plants. Thus, the correct options are 2, 4, and 6
What are ascomycetes?Ascomycota is a phylum of the kingdom fungi that, together with the Basidiomycota phylum of the fungi. The members of ascomycota are commonly known as the sac fungi or ascomycetes. Ascomycota is the largest phylum of Fungi, with over 64,000 species.
Ascomycetes are commonly known as sac-fungi as they are produced in a sac-like structure called as ascus. Inside this ascus, non-motile microscopic sexual spores are formed which is a defining feature of this kingdom fungi.
Therefore, the correct options are 2, 4, and 6.
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what is the meaning of localisation ?
The meaning of localisation is the process of making something local in character or restricting it to a particular place.
Localization is the adaptation of a particular product or service to one of those markets.
... XxMissFlirtyxX...Which statements describe organic compounds
Answer:
i don't know
Explanation:
twrnsjshdhidid
Nitrogen is an essential nutrient for plant growth. But farmers who cultivate pulse crops like Green gram, Bengal gram, Black gram etc., do not apply Nitrogenous Fertilizers during cultivation. Why?
Answer:
Nitrogen is so vital because it is a major component of chlorophyll.Nitrogen is the fuel that makes plants go. It's used to synthesize amino acids, proteins, chlorophyll, nucleic acids, and enzymes. Plants need more nitrogen than any other element.Farmers who cultivate pulse crops like green gram, Bengal gram, black gram, etc. do not apply nitrogenous fertilizers during cultivation because these crops have "rhizobium bacteria".
These plants are leguminous plants and they have symbiotic relationship with Rhizobium bacteria. This bacteria converts atmosphere nitrogen in a form that the plant can use, in return the plant provide them shelter and food. That's why they don't need extra nitrogen from fertilizers.
An organism has a haploid number of 20. What is the organism's diploid
number?
Answer:
It is 20!
Explanation:
I did this before
Where can food get broken down? Select all that apply.
A. in the stomach
B. in the mouth
C. in the small intestine
Answer:
The answers are A. and B.
Explanation:
Digestion starts in the mouth when you chew, then the acids in your stomach break the food down further.
Question 12 of 34
In humans, cells that line the small intestine have hairlike projections that
increase the surface area for the absorption of nutrients. What would happen
if these projections were not functioning properly?
A. The heart rate would decrease.
O B. Mechanical digestion would be minimized.
C. The bloodstream would absorb too much water.
D. Too few nutrients would enter the bloodstream.
Answer:
D
Explanation:
Hope this helps.
A human gene was initially identified as having three exons and two introns. The exons are 456, 224, and 524 bp, whereas the introns are 2.3 kb and 4.6 kb.
Required:
a. Draw this gene, showing the promoter, introns, exons, and transcription start and stop sites.
b. Surprisingly, this gene is found to encode not one but two mRNAs that have only 224 nucleotides in common. The original mRNA is 1204 nucleotides, and the new mRNA is 2524 nucleotides. Use your drawing to show how this one region of DNA can encode these two transcripts.
How does carbon cycle through Earth's systems? A. As fossil fuels are burned, carbon dioxide is made available for photosynthesis in animal cells. When the animals die, carbon is released into the soil, and the animal remains form new fossil fuels. B. Animals absorb carbon dioxide through their skin. Dead animals release carbon into the soil. Plants absorb the carbon from the soil and release carbon dioxide during photosynthesis. C. Plants absorb carbon dioxide through their leaves. Animals take in the carbon when they eat the plants. Animals exhale carbon dioxide. Dead plants and animals release carbon into the soilling D. Photosynthesis releases carbon dioxide into the atmosphere Cellular respiration uses carbon dioxide
Answer:
D. Photosynthesis releases carbon dioxide into the atmosphere Cellular respiration uses carbon dioxide.
Explanation:
Carbon dioxide is taken out of the air by the photosynthesis process to make carbon food for crops.
Animals and plants need a mechanism called respiration to remove carbon dioxide gas.
When combustibles are burned, carbon flows from fossil fuels to the air.
