The statement 'Scientists use restriction enzymes to cut DNA molecules and ligation to paste DNA fragments together' describes the construction of recombinant DNA molecules. This technology is called recombinant DNA.
Recombinant DNA is a genetic engineering approach by which scientists uses specific enzymes to cut and paste nucleotide (DNA) target sequences of interest.
The enzymes that recognize and cut DNA are called restriction enzymes, while enzymes that ligate DNA fragments are called ligase enzymes.
Recombinant nucleotide sequences are placed into specific vectors (e.g., a plasmid) that transport the DNA in a host cell in where this sequence is expressed as protein.
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When someone is infected with cholera, the cholera toxin acts as a
A. ligand
B. receptor
C. cellular response
D. nucleus
Answer:
I think it acts as a receptor
state three uses in a plant of the carboydrate produced in photosynthesis
Answer:
Organisms use carbohydrates produced by photosynthesis by oxidizing them to produce energy for respiration. - The glucose produced in green plants is directly utilized for respiration and other activities, while the excess is stored in the form of starch.
The eyes of some birds contain cells that detect ultraviolet (UV) light.
UV light is reflected by some fruits and the urine of small mammals.
Explain how birds that detect UV light have evolved from birds that could not detect
UV light
[6 marks
Birds that detect UV light have favorable characteristics that enable them to survive and reproduce. These characteristics are passed on to their offspring.
According to Darwin's theory of evolution, organisms that are better adapted to their environment live long enough to survive and reproduce and pass on these favorable traits to their offspring.
Since birds depend on these fruits for food and these fruits reflect UV light. A bird that can not detect UV light will find it difficult to obtain food. Hence, birds that have developed the ability to detect UV light will live long enough and reproduce, passing on these favorable characteristics to their offspring. Hence, birds that can detect UV light appears from birds who do not originally detect UV light.
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is having glasses a acquired trait or is it inherited
Answer: It can be both but it is mainly an inherited trait but environmental things can make your eye sight worse or better which can end up being an acquired, but like I said its more so an inherited trait.
Explanation:
An island experiences a decade long drought which causes a die off of several plant species. The only plants that survive have extremely small seeds with less nutritional value. Parrots which live on the island and eat seeds are more likely to survive and successfully reproduce if they are smaller since smaller body size requires less calories. Over the course of the decade, the average body size of the parrot population decreases. Which of the following statements below are correct?
a. The parrot population has evolved.
b. This is an example of genetic drift.
c. This is an example of directional selection.
d. This population meets the conditions for the Hardy Weinberg equilibrium.
e. This is an example of stabilizing selection.
f. This is an example of natural selection.
Answer:
A and f
Explanation:
which is colder 0 C or 32 F
Answer:
0°C × 9/5) + 32 = 32°F
Explanation:
above formula
How do protons (hydrogen ions) move through
ATP synthase?
Answer:
Protons flow down their concentration gradient into the matrix
Explanation:
The proton gradient produced by proton pumping during the electron transport chain is used to synthesize ATP. Protons flow down their concentration gradient into the matrix through the membrane protein ATP synthase, causing it to spin (like a water wheel) and catalyze conversion of ADP to ATP.
28. The figure below shows an animal tissue
(a) Name
(1) The parts of the tissue labelled A to F.
(ii) The animal from which the tissue is derived,
(b) Give the functions of each of the parts labelled
Answer:
The tissues of multicellular, complex animals are four primary types: epithelial, connective, muscle, and nervous. Recall that tissues are groups of similar cells group of similar cells carrying out related functions.
Explanation:
.
Canine Respiratory System. I need to figure out about how it works. Like a step by step on how it’s processed. I can’t find any good articles that actually explain.
Answer:
The Respiratory System helps you breath, here are the steps for it
(I have terrible spelling so sorry if you don't understand the words)
Explanation:
1) You take a breath
2) It goes down the treacha
3) Goes into the lungs
4) then the Bronchial tubes to the capillaries
5) The capillaries make perfect oxygen, and makes you breath out the Carbon Dioxide
Sorry if this explanation is super confusing or terrible
What structure within the eye could cause distortions?
Which is NOT one of
the functions of the
digestive system?
A
A. absorption
B. digestion
C. respiration
D. ingestion
Answer:
respiration
Explanation:
your lungs do the respiration, the digestive system is meant to ingest, absorb and ingest food into the body
Answer: C
Explanation: this occurs in the respiratory system whereas the rest occur in the digestive
Pregunta urgente ¿Que son horiciones? No se si es de biología o de ciencias
Answer:
Explanation:
Heres where to get your answer
https://www.info.com/serp?q=website%20medical&segment=info.0546&s1aid=3788024678&s1cid=11804561937&s1agid=114484240723&s1kid=kwd-944088888&utm_source=adwords&gclid=CjwKCAiAm7OMBhAQEiwArvGi3IMQUyr3aRG07nCggQt-8rAAgyPT3rJedCcJxTAl1ve9LJwgIxq21RoC4yQQAvD_BwE
Need Done before tomorrow pls
20 Matching questions
Answer:
1) T
2) C
3) G
4) S
5). B
6) L
7) R
8) E
9)H
10)K
Explanation:
ITS ONLY 10 I KNOW :)
How does one distinguish
between the left & right
sides of a heart?
Answer:
See explanation section for answer:
Explanation:
The left side of the heart contains the left atrium which allows oxygen rich blood to flow through the mitral valve and into the left ventricle. Whereas the right side of the heart contains the right atrium which allows the blood with poor oxygen levels to enter the right ventricle through the tricuspid valve.
Also, the left ventricle is larger than the right ventricle because the left ventricle is responsible for pumping the fresh oxygen rich blood throughout the body.
What is extinction?
What are the causes of the extinction of animals?
How the extinction of animals It can be fixed?
Answer:
Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. ... A typical species becomes extinct within 10 million years of its first appearance, although some species, called living fossils, survive with little to no morphological change for hundreds of millions of years.
Explanation:
# CAUSES OF ANIMAL EXTINCTION
Demographic and genetic phenomena.
Destruction of wild habitats.
Introduction of invasive species.
Climate change.
Hunting and illegal trafficking.
# Basic causes of extinction are as follows
2. Excessive hunting and killing of wild animals.
3. Poaching for purpose of meat, skin, fur, ivory, and rhino horns etc.
4. Capture and export of new species in large number.
5. Introduction of exotic species.
6. Excessive use of pesticides, fungicides, and other toxic chemicals.
7. Conversion of fertile land in the desert by overgrazing of domestic animals.
8. Deforestation leading to loss of covers or shelter to wild animals.
9. Excessive use of plant wood for timber, charcoal or fire purpose.
what layer is attached to the basement membrane by hemidesmosomes
Answer:
epidermis
The hemidesmosomes mediate the attachment of the basal keratinocytes of the epidermis to the underlying basement membrane (Figure 147-1B).
What do all living things have in common? All have cells with a nucleus. All have a genetic code. All are made of two or more cells. All can perform photosynthesis.
Living beings are organisms that can respire, respond, grow, reproduce, and are made of cells. All living things have a genetic code. Thus, option B is correct.
What is a genetic code?A genetic code is a sequence of proteins and nucleic acids that act as a hereditary molecule that transfers the traits and characteristics to the progeny.
The code can be in the form of DNA or RNA and provides information about the genotype of the organisms that were passed from their ancestors.
The genetic code is in the form of triplets and is a universal system that codes for the same proteins in all organisms. It consists of the nitrogenous bases that through translation make the amino acids.
Therefore, option B. all living organisms have a genetic code.
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one more 20 points what is sun light ?
Answer: sun light are light that comes from sun only
Explanation:
which is colder 0 C or 32 F
Answer: we know that the same temperature was named 0°C and 32°F. We write it 0°C = 32°F, and read it: "A temperature of zero degrees Celsius is the same as a temperature of 32 degrees Fahrenheit." Similarly, 0°F = 160/9°C. ... 23°C is 23°C above 0°C. But 23°C = 23*1.8°F and 0°C = 32°F.
Explanation: Mark me brainly please
Answer:
They are the same
Explanation:
(0°C × 9/5) + 32 = 32°F
To convert temperatures in degrees Celsius to Fahrenheit, multiply by 1.8 (or 9/5) and add 32.
a
What organelle in a plant is chlorophyll found
in?
Answer:
Chloroplasts in the Leaf
describe the features of the endocrine system for control in the example given.
- endocrine gland
-negative feedback mechanism
-produce hormone -> travel via blood-> target specific cells organs
Please expand these bullet points
Answer:
The endocrine system is a major system in the body composed of glands that secrete hormones, which are substances produced by the body to stimulate an organ or group of cells. The endocrine system controls essential bodily functions, which include movement, sexual development, sensory perception, and even growth.
Explanation:
Hormones are chemicals that are produced by the glands in the endocrine system and coordinate distinct bodily functions by carrying important messages throughout the body. They send signals to receiver cells in organs, muscles, and tissues.
Role of Hormones
Hormones have very essential roles in the body, as they regulate metabolism, growth, and sex development. For example, testosterone and estrogen are sex hormones that are released in the body to initiate sex development during puberty. The rate at which these hormones are produced and released must also be highly controlled for optimal development and growth. Hormones also control levels of hunger or exhaustion. Overall, they are very important in telling the body what to do and how to do it.
Function of Hormones
As previously mentioned, hormones serve several important functions throughout the body. They are responsible for the function of organs, in addition to controlling how the body stores and uses energy. Hormones only target specific organs or cells: for example, thyroid-stimulating hormones are released by the pituitary gland, and only target the thyroid gland. Some hormones can affect several kinds of tissues at once; for instance, the thyroid hormone, produced by the thyroid gland, can affect several bodily functions, such as heart rate and metabolism.
Precipitation moving from higher to lower elevations on the ground is called___?
Answer:
Evaporation
Explanation:
Evaporation is the process in which percipitation moves higher to lower elavations on the ground. Evaporation is when the sun heats up and dries out the water causing it to rise up to the clouds which then causes rain for another time. ( I am not completely sure)
What is the % of water inside the cell
Will osmosis occur
If so , which will water move (into or out of the cell )?
Will the cell swell or shrink ?
The cell is In what type of solution ? (Hypertonic , hypotonic ,isotonic ) help pls
The percentage of water inside the cell is 2.5 %. Water will move into the cell and it will swell. So it's a hypotonic solution.
What is osmosis?
Osmosis is the spontaneous diffusion or flow of water or other liquids over a semipermeable membrane, or one that prevents the passage of solutes, or dissolved compounds. The crucial biological mechanism was initially in-depth investigated in 1877 by German plant physiologist Wilhelm Pfeffer. Inaccurate investigations of leaky membranes, such as animal bladders, and the movement of water and other chemicals through them were previously conducted by other researchers.
A solution will tend to become more diluted by absorbing solvent through a membrane separating it from the pure solvent if the membrane is permeable to the solvent but not to the solute. The osmotic pressure, also known as the pressure exerted on the solution, can be raised to a certain level to halt this process. Jacobus Henricus van 't, Hoff, a Dutch-born chemist, demonstrated in 1886 that Henry's rule is obeyed if the solute is sufficiently diluted that its absolute vapor pressure is above the solution.
Therefore, the percentage of water inside the cell is 2.5 %. Water will move into the cell and it will swell. So it's a hypotonic solution.
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give difference Himalaya rivers- Peninsula river?
Answer:
- Himalayan rivers get water from snow and rain,
-whereas Peninsular rivers are fed by rain only.
-Himalayan Region is the shape of an arc.
- The Peninsular Plateau is in the shape of a triangle.
-Himalayan Region is made up of sedimentary rocks
- The Peninsular Plateau is made up of metamorphic and igneous rocks.
what is osmosis and diffusion
Osmosis: Osmosis is the movement of solvent particles across a semipermeable membrane from a dilute solution into a concentrated solution. ... Diffusion: Diffusion is the movement of particles from an area of higher concentration to lower concentration.
What are the four things that plants need to live
Answer:
Sunlight, water, carbon dioxide, dirt/soil
Explanation:
A large, dense-core vesicle found in the axon terminal is likely to contain:
A. Synthesis peptides
B. Neurotransmitter receptors
C. Enzymes that degrade transmitter molecules
D. Peptides
Answer:
D. peptides
Explanation:
Writing your own quiz from the information you learned in class and during your reading will help improve your study skills.
A.
True
B.
False
Answer:
A. true
Explanation:
Writing your own quiz on the information you studied will force you to go over the information and find all the important details
The state of Georgia has a yearly energy surplus.
Question 8 options:
a) True
b) False
Answer: A
Explanation:
True state of Georgia has a yearly energy surplus.
Does Georgia use more energy than it generates?
Georgia is among the top 10 electricity-producing states, the state typically uses more power than it generates.
What energy source does Georgia use?Nearly 75% of Georgia's electricity generation comes from hydro production (75.3% in 2019), with the remainder produced from natural gas and from a 20.7 MW wind power plant .
Hence, correct option is :True
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The right and left coronary arteries are the first branches off the a. aorta. b. superior vena cava. to. pulmonary trunk. d. pulmonary veins. g
Answer:
answer is A aorta
Explanation:
aorta is the answer