Answer:
d. partially permeable
Explanation:
The cell membrane is the cellular organelle that covers and bounds all cells. It forms a boundary around a cell, protecting all other organelles. The cell membrane, according to the FLUID MOSAIC MODEL, contains phospholipid bilayer, proteins etc.
The phospholipid (lipid) content of the cell membrane confers its ability to be SELECTIVELY OR PARTIALLY PERMEABLE upon it. It is said to be partially permeable because it allows the passage of some molecules/substances and blocks the passage of others.
Help fast plz!!!
In a population of moths, wing color became darker over time. Which of the
following is the best evidence that the change in wing color was an evolutionary change?
a) The size of the moth population changed.
b) The average length of the moths' dark wings increased.
c) The number of eggs that females laid during each breeding season increased.
d) The frequencies of the alleles for dark wing color in the moth population
changed.
Answer:
d) The frequencies of the alleles for dark wing color in the moth population
changed.
Answer:
D
Explanation:
It would best describe how or what made the moths have more dark/darker collored wings overtime.
Exam Guidelines
Exam Instructions
Question 13 of 20 :
Select the best answer for the question
13. What molecular cloning tool do bacteria naturally produce to defend against viral infections?
O A. DNA ligase
O B. Restriction enzymes
O C. Antibiotics
O D. PCR
Mark for review (Will be highlighted on the review page)
Si
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о
Answer:
O B. Restriction enzymes
Explanation:
Restriction enzymes has the ability to recognize specific DNA sequences and cut them in a specific manner in order to produced by the bacteria as a defense mechanism against foreign DNA containing substance such as viruses etc. This restriction enzyme is also called restriction endonucleases. This is a cloning tool that bacteria produced naturally in order to defend itself from the infection of virus.
What is an amniotic egg?
Answer: The amniotic egg was an evolutionary invention that allowed the first reptiles to colonize dry land more than 300 million years ago. Fishes and amphibians must lay their eggs in water and therefore cannot live far from water. ... Within the chorion is the amnion, the membrane for which the amniotic egg is named.
Explanation:
May someone help me with this please?
QUESTION 1 Genetic information has become part of our culture and it is difficult to tell the difference between unmodified and genetically modified food sources such as plant and animals. After reading this module’s material regarding vectors in biotechnology, consider the potential for nanotechnology and scientific advancement. Research nanotechnology and its potential use in biotechnology. In one or two paragraphs, explain the potential advantages and disadvantages of nanotechnology in health care, agriculture, or industry and discuss whether you would or would not support further research.
Answer:
Nanotechnology is a field of producing materials and devices from atoms and molecules.
Explanation:
Nanotechnology is a field that concerned with producing materials and devices from atoms and molecules. A nanometer is one-billionth of a meter in size. Nanotechnology can be used to “recognize” the cells of interest which allows associated drugs to reach diseased tissue without damaging healthy cells. Nanotechnology produces new and faster kinds of computers, more efficient power sources and more effective medical treatments. Main disadvantages include threats to security, privacy, health and the environment. More research must be done in this field to get more benefits from it.
how do genes create traits in a organism
Answer:
Like chromosomes, genes also come in pairs. Each of your parents has two copies of each of their genes, and each parent passes along just one copy to make up the genes you have. Genes that are passed on to you determine many of your traits, such as your hair color and skin color.
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Sally, 9-year-old girl, just did an awesome backflip on her trampoline. Instead of landing in a similarly awesome manner, she miscalculated and landed on her neck. Sally stood up with pain in her neck and does not appear to be able to extend her left arm very well. An x-ray shows a fracture of her C6 vertebrae that is compressing down on her C7 vertebrae impacting the spinal nerve located between C6 and C7 vertebrae. Which spinal nerve did Sally likely injure
Answer:
The C7 spinal nerve
Explanation:
The C7 spinal nerve exits on each side through the intervertebral foramen between the C6 and C7 vertebrae. The C7 spinal nerve has both a sensory root which is composed of sensory fibers and a motor root. This nerve is required to control motor functions including shoulder movement (i.e., adduction, abduction and rotation). The C7 dermatome is a region of skin that receives sensory inputs from the C7 spinal nerve.
The role of the RNA-induced silencing complex (RISC) in RNA interference is to cleave tRNAs to slow the rate of translation. disrupt gene expression by cleaving mRNAs that are complementary to the guide strand of the RNA duplex that was introduced. cleave the introduced RNA duplex. disrupt gene expression by interfering with mRNA export to the cytoplasm. create a passenger strand to bind to the mRNA and keep the mRNA from being translated.
Answer:
disrupt gene expression by cleaving mRNAs that are complementary to the guide strand of the RNA duplex that was introduced
Explanation:
The RNA-induced silencing complex (RISC) is a ribonucleoprotein complex composed of proteins that associate with regulatory small non-coding RNAs (sncRNAs) such as, for example, microRNAs (miRNAs) and small interfering RNAs (siRNAs) in order to regulate gene expression by the RNA interference (RNAi) pathway. These sncRNAs (around 18-30 nucleotides in length) are complementary or nearly complementary to messenger RNAs, thereby they can bind to target mRNA sequences in order to trigger RNAi via mRNA degradation, translational repression, etc. The core component of the RISC complex is an evolutionary conserved Argonaute (Ago) protein that cleaves target mRNAs.
what does transportation help in ascent of sap?
Evaporation of water molecules from the cells of a leaf creates a suction which pulls from the xylem cells of the roots.Thus,the transpiration helps in the absorption and upward movement of water and minerals dissolved in it from roots to leaves in the help of ascent of sap .
may this was ur answer
HELP PLS!!! (PSYCHOLOGY) I'LL GIVE YOU BRAINLIEST IF UR RIGHT!!
Nate is a teacher who has been in the dassroom for 25 years. When a new teacher is hired, he offers to be a mentor because he loves helping new teachers get inspired about working with children. He wants to help make sure that the teaching profession remains high quality. How would Erikson MOST likely describe Nate's efforts?
A.) Nate is working en generativity.
B.) Nate is working on ego integrity.
C.) Nate is working on intimacy.
D). Nate is working on acceptance
Answer:
A.) Nate is working on generativity
Explanation:
Generativity is the ability to provide care or concern for younger or older genrations. Nate offers to be the mentor because he loves helping the new teachers get inspired about working with children. According to Erik Erikson theory of psychosocial development, generativity can refer to "making your mark" or impact on the world through creating or nurturing things that will outlast in an individual/individuals.
PLEASE HELPPPP
What is the relationship between mutation, the cell cycle, and cancer? Select all statements that apply.
A Mutated genes typically allow cells to respond to checkpoint proteins that halt the cell cycle, thus avoiding formation of tumors.
B. As a result of unregulated cell cycles, cells may become cancerous, meaning that the cells grow and divide uncontrollably.
С
Cancerous cells may form malignant tumors that invade and destroy surrounding healthy tissue.
D. Mutated, defective genes may cause cells to become unable to respond to signals that regulate the cell cycle.
Earth’s rotation caused surface currents in the Northern Hemisphere to
A. Curve Clockwise
B. Move in straight lines
C. Curve Counterclockwise
D. Move in diagonal lines
1. In DNA, the complementary bases are A-T and C-G, what is different about the complementary base pairing rules for RNA?
2. What amino acid is made from the mRNA codon GUA?
3. If the original DNA sequence is TAC-CCC-GAT-CGT, what would the complementary mRNA sequence be?
4. Using the mRNA sequence from number 3, what amino acids will be made from that sequence?
5. What are all the possible codons that would create the amino acid histidine (his)?
6. How many different codons are there that will create arginine (arg)?
7. If the amino acids joined together to make a protein are valine-proline-stop, what is one of the possible sequences of mRNA that could have created it?
Please Help!!!
How many ATP can be obtained from the complete beta-oxidation and metabolism of one 16-carbon fatty acid molecule?
Answer:
read ex
Explanation:
129 ATP
8.
Waste products that are easily broken down by nature are
hazardous
toxic
biodegradable
recyclable
What is the main reason to put a telescope in space?
A.
It is much closer to the stars.
B.
It can receive star light that cannot reach Earth.
C.
Light reaching it is not affected by the movement of air.
D.
It can detect objects behind the moon.
Answer: D
Explanation:
The main reason we put telescopes into space is to get around the Earth's atmosphere so that we can get a clearer view of the planets, stars, and galaxies that we are studying. Our atmosphere acts like a protective blanket letting only some light through while blocking others.
WILL GIVE BRAINLIEST!!!!!!
the last one I guess
Explanation:
i checked internet
Which skull bone is part of the facial bones and contains teeth?
Answer:
The anterior skull consists of the facial bones and provides the bony support for the eyes and structures of the face. This view of the skull is dominated by the openings of the orbits and the nasal cavity. Also seen are the upper and lower jaws, with their respective teeth
what is a example of acceleration?
Answer:
For example, if a car turns a corner at a constant speed, it is accelerating because its direction is changing. The quicker you turn, the greater the acceleration. So there is an acceleration when velocity changes either in magnitude or in direction, or both.
Explanation:
hope this helps... (i can't see the pic...)
(─‿─)
How did the crickets lose their ability to chirp?
Answer:
By a mutation that altered the shape of their wings, making them incapable of producing the chirping noise. The feat was achieved over less than 20 generations, a mere evolutionary blink of an eye, and, with the crickets living just a few weeks, a very rapid process.
Explanation:
Answer:
The change seems to have been caused by a mutation that altered the shape of their wings.
Explanation:
Makes them incapable of producing the chirping noise. The feat was achieved over less than 20 generations, a mere evolutionary blink of an eye, and, with the crickets living just a few weeks, a very rapid process.
PLEASE HELP!!!!!!!!!!
Answer:
3 (dominant) 1 (recessive)
Explanation:
I need help with question 54 .
Answer: D
In the laboratory, under favorable conditions, a bacterial population will grow exponentially, but in the real environment, these favorable conditions do not always exist.
y= 4/3x -8
4x-3y=24
Answer:
(x,y)= (x, 4/3x-8)
Explanation:
Which of the following tropisms are the
same as geotropism?
a. thigmotropism
b. hydrotropism
c. phototropism
d. gravitropism
Answer:
d
Explanation:
d.gravitropism as it's both going downwards
B. Suspension c. Solution
D. Saturated solution
5. Which is a solvent in a cup of coffee?
A. coffee
B. creamer
c. sugar
D. water
6. Why should you shake the liquid medicine before drinking?
A. To make it effective. C. To mix the suspended particles at the bottom.
B. To make it taste better. D. To make it clear.
7. What should be done in a liquid medicine before drinking it?
A. Drink right away after opening. C. Let it stand for 3 minutes
B. Shake well
D. All of these
8. Which of the following is called a universal solvent?
A. water 8. gasoline C. juice D. diesel
m-Directions: For items 1-5 What method are you going
Answer:
5.c 6.c 7.b 8.a
Explanation:
I hope it helps u :)
Help please !!!!!! Need the answer asap
Answer:
i think the answer is c
Explanation:
An igneous rock has a coarse texture and is dark in color. How else can this rock be accurately described?
small crystals
cooled quickly
produced from magma
formed at Earth’s surface
Answer:
C. produced from magma.
D. formed at Earth’s surface
Explanation:
Earth crust refers to the outermost layer or thin shell which makes up the earth such as sedimentary, metamorphic and igneous rocks.
The Earth crust is typically made up of two (2) main types;
1. Oceanic crust: this crust has a thickness ranging from 5 km to 10 km and comprises of denser rocks such as diabase, gabbro and basalt.
2. Continental crust: this crust has a thickness ranging from 30 km to 60 km and comprises of minerals such as quartz, silicate, feldspar, aluminum and less dense rocks such as granite
An igneous rock has a coarse texture and is dark in color. Also, an igneous rock can be accurately described as being produced from magma and formed at Earth’s surface.
Answer:
Produced from magma
Explanation:
I got it right on the test hope this helps
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Wrong answers only!!! What is the main source of surface water turning into underground water?
Answer:
Birds + planes = chicken
Explanation:
If you divide the air density by the amount of dirt on the sun, you get three roasted turkeys and a new haircut.
Answer:
Hey you forgot the part were you stuff the candle with cotton and then square the amount of laptops you have then divide by the amount of iphones produced by the worms that eat batteries to get the answer chicken AND 3 marked white vans but the catch is there are not white they are actually red
Explanation:
which one contains many organelles with different functions prokaryotic cell eukaryotic cell
Answer:
Eukaryotic Cell
Explanation:
Eukaryotic cells contain membrane-bound organelles, such as the nucleus, while prokaryotic cells do not. Differences in cellular structure of prokaryotes and eukaryotes include the presence of mitochondria and chloroplasts, the cell wall, and the structure of chromosomal DNA.
ASAP PLS HELP !!! Jfndndbrhdbdbr pls