AZT works by selectively inhibiting HIV's reverse transcriptase, the enzyme that the virus uses to make a DNA copy of its RNA. Reverse transcription is necessary for production of HIV's double-stranded DNA, which would be subsequently integrated into the genetic material of the infected cell to produce its proteins. All reverse transcriptase inhibitors are analogues of the naturally occurring deoxynucleotides needed to synthesize the viral DNA and they compete with the natural deoxynucleotides for incorporation into the growing viral DNA chain.
A mixture IS a pure substance
(True or false)
Answer:
no
Explanation:
Matter can be broken down into two categories: pure substances and mixtures. Pure substances are further broken down into elements and compounds. ... A chemical substance is composed of one type of atom or molecule. A mixture is composed of different types of atoms or molecules that are not chemically bonded.
What is Chargoffs Rule?
A T and C G = ________ %
Answer:
Chargaff's rules state that DNA from any species of any organism should have a 1:1 protein stoichiometry ratio of purine and pyrimidine bases and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine
Fred has four daughters. What is the probability that his fifth child will be a boy?
a. 100% b. 50% c. 25% d. 20%
What is the difference between
atoms and molecules
Answer:
Atoms are single neutral particles. Molecules are neutral particles made of two or more atoms bonded together.
Explanation:
Consider the sphere. A sphere. A is the great circle, B is the diameter, c is the radius, and d is the center. Identify the parts of a sphere. a is the b is the c is the d is the
Answer:
a is the great circle
b is the diameter
c is the radius
d is the center
Explanation:
write short note on adaptations
Answer:
Adaptation is the physical or behavioural characteristic of an organism that helps an organism to survive better in the surrounding environment.” Living things are adapted to the habitat they live in. This is because they have special features that help them to survive.
Explanation:
When does energy transfer from air to the land?
Answer:
Conduction, radiation and convection all play a role in moving heat between Earth's surface and the atmosphere. Since air is a poor conductor, most energy transfer by conduction occurs right near Earth's surface
Explanation:
I hope this helps answer your question
How are traits inherited by offsring?
Answer:
Traits are passed to offspring by the offspring parents.
Explanation:
the genes that control a trait come in pairs, one from each parent. If a gene pair contains a dominant allele (a variation of genes that will produce phenotype,) than the offspring gains that trait from the dominant parent.
Lettuce, greenfly, ladybug, thrush, cat
Name the herbivore in the food chain.
Answer:
greenfly
Explanation:
which one is the lowest ,middle and highest between these magnification
10X
30X
40X
Answer:
10X is lowest
30X is middle
40X is highest
Scientists follow seismic waves to locate the epicenter.
Please select the best answer from the choices provided
T
F
Answer: This is true, scientists do follow seismic waves.
Answer:
True, or T.
is what it is
A wasp lays eggs on an orb-weaving spider to...
a) force it to protect the wasp and it's larva.
b) make it provide a home and meal for it's larva.
c) use it to carry it's larva Long distance.
d) make it create a cocoon for the larva.
Answer:make it provide a home and meal for it's larva.
Explanation:i did a little bit of research, and the spider provides food and shelter for the larva
the Sting of bees contains which acid
Answer:
Formic acid
Explanation:
It is a type of acid which causes the sting. The sting can be neutralised by applying a base.
Answer:
HistamineExplanation:
It makes up 0.9% of venom, and causes itching and pain at the sites of the Sting.Helppppppppppppppppp
Answer:
yes is right 75%
Explanation:
Which substance do biochemists often search for in fossils to help better understand the evolutionary relationships of the organism that formed the fossil?
A.
DNA
B.
iron
C.
ATP
D.
oxygen
Answer:
B
Explanation:
The substance do biochemists often search for in fossils to help better understand the evolutionary relationships of the organism that formed the fossil - A. DNA
DNAis the genetic material that is found in every living organism that provides genetic information.
It also provides evidence of evolution.DNA sequences vary from species to species, but there are many overlapsThe ongoing branching of the sequencing produces multiple lines of descent.It can be inferred by comparing the DNA sequences of different organisms to check or find the evolutionary relationships of the organism that formed the fossilThus, The substance do biochemists often search for in fossils to help better understand the evolutionary relationships of the organism that formed the fossil - A. DNA
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https://brainly.com/question/13061899
Can any body help me with this no website
ILL GIVE BRAINLIEST (RIGHT ANSWER ONLY)
Students in Ms. King's science class are researching the history of the cell theory and will write a blog to show what they have learned. Which of the following is the best choice for the introductory sentence?
A. A scientific theory, like cell theory, does not change.
B. A hypothesis, such as one about cells, usually becomes a theory.
C. Scientific theories, like those written about cells, are not as important as scientific laws.
D. Scientific theories, such as cell theory, are based on well-supported observations of nature.
Answer:
b just go with your gut 54
I DONT UNDERSTAND PLEASE HELP ME OUT
Which compound would most likely be found in all living organisms?
cellulose
ethanol
insulin
water
Answer:
water
Explanation:
its so obvious...
Answer:
cellulose and water .I think are answer
??? help ??? please anyone
Answer:
B
Explanation:
where on the map is Africa
Look in the picture i can't find the answer sorry :D hope it helps
Which of the following most likely has the greatest
thermal energy?
A. water going over a waterfall
B. water in a lake
C. water from a hot water tap
O D. water vapor
what is organic farming?
Answer:
Organic farming is a method of crop and livestock production that involves much more than choosing not to use pesticides, fertilizers, genetically modified organisms, antibiotics and growth hormones. ... provide attentive care that promotes the health and meets the behavioural needs of livestock
10. Three observers made the diagrams above to show what they think the Moon looks like when it is
seen from above (top view), In these diagrams, the sunlight is coming from the left, as shown by the
arrows. Which diagram is accurate and why?
Answer:
B
Explanation:
HURRRRRRRRYYYYYYY!!!!!
Which statement BEST describes the relationship between photosynthesis and cellular respiration?
A
Both processes release energy in the form of heat.
B
Both processes use energy to form molecules of glucose.
C
The products of one process are the reactants in the other process.
D
The products of one process are the same products in the other process.
Answer:
b
Explanation:
Which part of the respiratory system that branches off of the trachea carrying oxygen farther into the lungs?
-lobs
-alveoli
-bronchioles
-bronchi
Answer:
-bronchi
Explanation:
Hope this helps
8. How are most seeds dispersed to a barren landscape?
Answer:
Some seeds are transported by the wind and are shaped to float, glide or spin through the air. ... Some seed pods are designed to explode and throw the seeds a good distance from the parent plant. Many plants also use animals to carry their seeds.
Explanation:
look at the picture also i dont know what this is so I just put biology
Answer:
millions of years
Explanation:
Takes a long time to form, so millions of years.
Analyze the Punnett square below and determine the the genotypic ratio. Axial flowers are dominant
Answer:
first answer choice
Explanation:
there's 1 AA, 2 Aa's, and 1 aa. the genotype is the combination of those letters, and the phenotype is what they would look like.
Gymnosperm ovules are fertilized twice, called double fertilization.
Group of answer choices
True
False
Answer:
false
Explanation: