UNIT TEST!! Help!! :C
1. Which statements describe gene therapy? Check all that apply.
☐ It cures all cases of cystic fibrosis.
☐ It involves the modification of DNA.
☐ It is easy to apply to all cells affected by the disorder.
☐ It attempts to replace a mutated gene with normal DNA.
☐ It does not always cure patients who use it.
2. A fruit fly has black eyes. Having red eyes is a dominant trait (R) and having black eyes is a recessive trait (r).
Which describes the fruit fly’s genotype and phenotype?
A.)genotype: black eyes
phenotype: Rr
B.)genotype: black eyes
phenotype: rr
C.)genotype: rr
phenotype: black eyes
D.)genotype: Rr
phenotype: black eyes
Thank you sm for helping <33
Answer:
for number one i got ☐ It involves the modification of DNA
☐ It attempts to replace a mutated gene with normal DNA.
☐ It does not always cure patients who use it.
FOR NUMBER TWO I GOT:
D.)genotype: Rr
phenotype: black eyes
plz mark brainliest!!!
Answer:
☐ It cures all cases of cystic fibrosis.
☐ It involves the modification of DNA. √
☐ It is easy to apply to all cells affected by the disorder.
☐ It attempts to replace a mutated gene with normal DNA. √
☐ It does not always cure patients who use it. √
Explanation:
Give an example of a stimulus, and explain how your nervous system and muscular system work together to respond to it. Explain in 2-4 sentences.
Answer:
Hot metal.
Explanation:
Hot metal is the stimulus that allows nervous system and muscular system work together. When the person touch the hot metal, the sensory cells present on the skin sends signals to the central nervous system through sensory neurons. The central nervous system made a decision and order to the muscles of the hand to remove hand from the hot metal or body. These orders are send to the muscles through motor neurons. In this way, both nervous system and muscular system work together.
Some people worry that the increasing number of cell phones will cause cancer because of the energy of the radio waves they emit. Cell phones are a new technology that only recently became widely used. And because cancer takes years to develop, the amount of risk is not yet known.
Research this issue, and summarize what’s known so far. In your summary, include information about the energy of radio waves. Be sure to only use credible sources. Based on what you learned from your research, do you think people should limit their cell phone use? Why or why not?
Answer: Yes.
Explanation: Because if it causes disease or problem then why continue to do it?
Answer: Well, from what my research is saying. cell phones emit low levels of non-ionizing radiation when in use. It can also referred to as radio frequency (RF) energy. And as stated by the National Cancer Institute, "there is currently no consistent evidence that non-ionizing radiation increases cancer risk in humans. So, it has not been proven weather or not you could get a tumor or cancer from the energy waves.
Some information about a radio wave is that we can have an energy of around 4 x 10-10 eV.
Okay so, I do think people should limit their cell phone use for other reasons. For one, Phones can be overly addicting, I do speak from experience. Phones can also take up way to much of your time is you're just scrolling around on them.
Explanation: So at least that's what I would say. Hope this helped! :)
Mosses are an example of which of the following?
decomposers
heterotrophs
autotrophs
detritovores
primary consumers
Answer:
mosses are autotrophs
Explanation:
-
Which process(es) occur in body cells (such as skin, muscle, and bone)?
Group of answer choices
mitosis
meiosis
neither mitosis or meiosis
both mitosis and meiosis
Answer:
Mitosis
Explanation:
Mitosis is how somatic—or non-reproductive cells—divide. Somatic cells make up most of your body's tissues and organs, including skin, muscles, lungs, gut, and hair cells.
4.
DNA: TAC CCA CCT GGA AAA CAC ATT
mRNA:
Amino acids:
HELP PLEASE
When cells are going through the steps of mitosis, they are
Which statement best describes Earth’s outer layer underneath the surface in the image?
Answer:
Underneath both the soil and the ocean, Earth's outer layer is made of sand and water. Underneath both the soil and the ocean, Earth's outer layer is made of hard, solid rock.
how would blockage of the pancreatic duct affect the digestive system
a) The food in the small intestine would be more basic (alkaline
b) It would have little effect because liver enzymes would take over
c) The small intestine would contain acidic, mostly undigested chyme.
d) The stomach would be unable to function
Answer:
D
Explanation:
The stomach would eventually shut down (stop working) cause it could not digest anymore
Which of the following best describes the connection between cardiovascular disease and age?
Can someone please answer this for me !!
Answer:. The genotype is RB(the gene)
The phenotype is purple(the physical appearance)
None of the flowers will be red
All will be purple.
None will be blue
Note: the crossing above indicates a case of co-dominance
Which structures differentiate plant cells from animal cells?
Answer:
2,4,8
Explanation:
Hope it helps :)
DNA gives the cell instructions to make...
carbohydrates
fatty acids
proteins
cholesterol
Answer:
c. Proteins
Explanation:
The DNA code contains instructions needed to make the proteins and molecules essential for our growth, development and health.
Hope this helps!
Answer:
protein
Explanation:
To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies. Each DNA sequence that contains instructions to make a protein is known as a gene.
7. Since the allele for color blindness is located on the X chromosome, color
blindness
1 cannot be inherited
2 occurs only in adults
3 is sex-linked
4 none of the above
(HELP ME PLEASEEE!)
Hemophilia A and red-green color blindness are examples of X-linked recessive diseases. Color blindness to red and green. Red-green color blindness prevents a person from recognizing red and green hues (usually blue-green). Otherwise, though, they can see normally. Thus, option C is correct.
What allele for color blindness located on X chromosome?Females have two X chromosomes, while males have one X and one Y chromosome. The X chromosome is where the genes that might cause red-green color blindness are handed down. Men are more likely than women to have red-green color blindness, since it is X-chromosom-inherited.
One of the most prevalent genetic (inherited) disorders in the world is color blindness, which means it is typically inherited from your parents.
Therefore, the allele for color blindness is located on the X chromosome, color blindness is sex-linked.
Learn more about color blindness here:
https://brainly.com/question/29658462
#SPJ6
A mutation on the checkpoints of the cell cycle can cause....
A. Apoptosis
B. Uncontrolled division
C. S phase
D. deactivation
Answer:
I will GUESS B is your answer
Explanation:
True or False: Muscle memory occurs when you practice a movement a lot and the body remembers it.
Answer:
true
Explanation:
Answer:
True
Explanation:
Vesícula e vacúolo são a mesma coisa ?
Answer:
Vesículas e vacúolos são sacos ligados à membrana que funcionam no armazenamento e transporte. Os vacúolos são um pouco maiores do que as vesículas, e a membrana de um vacúolo não se funde com as membranas de outros componentes celulares. As vesículas podem se fundir com outras membranas dentro do sistema celular
NO ONE
literally no one.....
DAD BE LIKE:
OK *THUMBSUP*
Two distinct bands appear in a single lane at the completion of an SDS-PAGE analysis of an unknown protein. Select one: a. These bands represent two subunits of a homodimer. b. Each band represents a different sized subunit of a multimeric protein. c. Each band represents a protein subunit with different charge to mass ratio. d. These bands represent two subunits of a heterodimer. e. These bands represent two separate subunits of identical size.
Answer:
b. Each band represents a different-sized subunit of a multimeric protein.
Explanation:
SDS-PAGE analysis allows the separation and discrimination of proteins according to their molecular weight. The technique separates proteins in an electromagnetic field.
The SDS-PAGE technique makes proteins move in solid support -gel- by the action of the electric field. The distance reached by each protein is proportional to their molecular weight. The protein separation from a mixture results in bands that reflect their size.
SDS is a detergent that denaturalizes the protein and sets a relation charge size, such as that the motion of the protein in the gel is proportional to its weight. The bigger the protein is, the stronger interaction with the polyacrylamide gel there will be. The speed of displacement in the electromagnetic field is inversely proportional to the protein size.
All organisms in the kingdoms Eubacteria and Archaebacteria ____________?
A.multicellular organisms.
B.are autotrophs
C.prokaryotes.
D.are heterotrophs
Answer:
C
Explanation:
A prokaryote is a typically unicellular organism that lacks a nuclear membrane-enclosed nucleus.
SOMEONE HELP ME PLEASEEEE ILL MAKE BRAINLIST OR WHATEVER HOW UTS CALLED
Answer:
this would be layer 1
Explanation:
it is closest to the surface which means it will have the most recent fossil if you had a question that said what layer has the oldest fossils it would be 4
As a responsible student, what practical thing can you do to contribute to the global effort against global warming?
a. using plastic cups in experiments
b. using a car instead of a bike to go to school
c. turning the lights off when not in use
d. washing clothes only in the afternoon
e. taking a shower only in the morning
Answer:
Its B(and c if it you could answer 2 )
Explanation:
a. Sure your using plastic less but still you could have avoided the use of cups in all.
b. (we already know this is the answer but let me explain) If you use a car of course it would pollute the air so if you use a bike you would both be exercising and polluting the air less.
c. It would cocerve energy so the main reason i asked if it was multi answer.
d.what would that do, your still using water?
e. same answer as last explination.
Soil organisms, such as mycorrhizal fungi, impact the rate of succession in ecosystems. Mycorrhizal fungi have a mutualistic relationship with various species of plants and increase the plant growth and survival. Sand dunes often lack mycorrhizal fungi, and a researcher wanted to determine the effect of adding mycorrhizal species to sand on disturbed beaches on grass growth. The researcher set up various mycorrhizal communities at disturbed beaches in different locations on the east coast of the United States. Identify the independent variable in the study.
Answer:
The amount (number) of mycorrhizal fungi
Explanation:
In a scientific experiment/study, the independent variable is the variable that isn't changed by other variables, while the dependent variable is the variable that is being measured during the experimental procedure. The independent variable is manipulated by the researcher (in this case, the amount of mycorrhizal fungi), thereby affecting the dependent variable (in this case, grass growth). In consequence, a variable is dependent because it 'depends' on the independent variable.
Does hereditary deafness affect the person's lifespan.
Answer: Yes, yes it does
Answer:
No, it will just make it harder.
what is the difference between ovulation parturition, and gestation
What is the reason water has so many special properties?
Answer: Water has many unusual properties
Explanation: Water has many unusual properties because of its polar covalent bonds. Oxygen has a larger electronegativity than hydrogen, so the electron pairs are pulled in closer to the oxygen atom, giving it a partial negative charge. Subsequently, both of the hydrogen atoms take on a partial positive charge.
50 POINTS + BRAINLIEST IF CORRECT.
Which of these statements about ocean water is always correct?
a.) Its area is less than the area of freshwater.
b.)Its salinity is less than the salinity of freshwater.
c.) Its density is greater than the density of freshwater.
d.)Its temperature is greater than the temperature of freshwater.
Answer:
c.) Its density is greater than the density of freshwater.Explanation:
Seawater is denser than both fresh water and pure water because the dissolved salts increase the mass by a larger proportion than the volume.
The freezing point of seawater decreases as salt concentration increases.
Answer:
C.) Its density is greater than the density of freshwater.
Explanation:
Average density at the surface is 1.025 kg/l. Seawater is denser than both fresh water and pure water (density 1.0 kg/l at 4 °C (39 °F)) because the dissolved salts increase the mass by a larger proportion than the volume. The freezing point of seawater decreases as salt concentration increases.
I'm not sure it could also be D
describe and explain the process or steps in the rock cycle off how sedimentary Rocks are formed
How many dogs are in the world
Answer:
900 million around the globe.
Explanation:
Mark brainiest pls
How would you classify this organism based on the dichotomous key?
Select one:
A. Kingdom Plantae
B. Viruses
C. Kingdom Eubacteria
D. Kingdom Protista
Answer:
Explanation:
3a b is your answer