explain why antibiotics are not consistently effective against infection of bacteria
Explanation:
Antibiotic resistance happens when germs like bacteria and fungi develop the ability to defeat the drugs designed to kill them. That means the germs are not killed and continue to grow. Infections caused by antibiotic-resistant germs are difficult, and sometimes impossible, to treat.
hope this helps you.
Help for brainliest:)
Variation in offspring is important in maintaining genetic diversity within a population . Which of the answer choices indicates a mechanism of introducing genetic variation in a population? Select all that apply.
A crossing over during meiosis B ) fertilization of an egg by a sperm
C) independent assortment during meiosis
D) mitosis producing two new daughter cells
E) binary fission resulting in two bacterial daughter cells
Answer:
A B and C
Explanation:
Crossing over breaks, exchanges and rejoins chromosomes at corresponding points so introduces genetic variation. Because of crossing over offspring has characters of both parents.
Also independent assortment means that during separation of the chromosomes in anaphase, any chromosome can pair up with another. So for example if we have one parent plant with yellow and wrinkled seeds and other one with green and round seeds, then the gene responsible for round seed can pair up with either of the genes responsible for yellow seeds or green seeds. Hence the characters of offspring differ from the parents, it can have yellow round seeds or yellow wrinkled seeds and so on.
Mitosis will only produce 2 daughter cells which are exactly like their parent cells and are also identical to each other. Binary fission is a form of Asexual reproduction so it does not involve shuffling of genes from 2 parents.
Because of fertilization of egg with a sperm the maternal genes and paternal genes mix together. So it also produces genetic variations.
What color do you see when all colors of light are reflected? (2 points) Group of answer choices Black Blue Maroon White
Answer:
white
Explanation:
Answer:
white colour
Explanation:
when all colours are reflected back then we see white colour
________________________ happen when pairs of bonded bases in a double strand of DNA get replaced with different pairs.
_________________________ happen when extra base pairs are included in an existing DNA sequence.
_________________________ happen when base pairs in an existing DNA molecule get removed from it.
Fill in the blanks correctly
Answer:
Explanation:
A base pair is two chemical bases bonded to one another forming a "rung of the DNA ladder." The DNA molecule consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups. Attached to each sugar is one of four bases--adenine (A), cytosine (C), guanine (G), or thymine (T). The two strands are held together by hydrogen bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.
air is made of ____and ____
Answer:
The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen.
Answer:
air is made of nitrogen and oxygen
Irradiated mice given a stimulatory antigen fail to mount an adaptive immune response. A robust response can be restored by:
Answer:
A bone marrow transplant (BMT)
Explanation:
An irradiated mouse would have immune hypocellularity or acellularity. A BMT would replenish its immune system to mount a robust immune response.
I need help with dis plz!!the question dat says before
Answer:
c maybe lol
Explanation:
Answer: The information is halved
Explanation:
C
PLEASE HELP!! i’ll give brainlist and points.
Answer:
4 then 1 then 3 and finally 2
do it the easy way hope it helps
What are the functions for d the organelles in an animal
Cell?
Answer:
Centrioles - Centrioles are self-replicating organelles made up of nine bundles of microtubules and are found only in animal cells
When dissaved in water, acids release____and bases release
A. Oryarm torss mytrogeniors
B. hydrogen ions, hydrations
Answer:
The Answer would B
Explanation:
hydrogen ions, hydrations
In the bacterial CRISPR system, the crRNA performs which of the following functions?
The CRISPR-Cas system is a genome engineering tool to edit the genome of any species. The crRNA is a sequence complementary to the target DNA of this genome editing system.
The CRISPR-Cas genome editing system is a recently developed genome engineering tool, which can be used to edit the genome of virtually any species.
This genome editing system consists of a nuclease (Cas) protein that cuts the DNA at the targeted regions, and a single guide RNA (sgRNA), which contains a crRNA (17-20 nt) sequence complementary to the target DNA.
In consequence, the sgRNA guides to the Cas protein in order to cleave the genome at targeted nucleotide sequences.
Learn more in:
https://brainly.com/question/12880230
One of the primary roles of the reproductive organs is the production of which of the following kinds of specialized cells?
gamete cells
nervous cells
epithelial cells
Helper T Cells
Answer:
gamete cells is the correct answer
explain how asexual reproduction is different from sexual reproduction
Explanation:
asexual only needs one parent and serial needs 2 parents
asexaul animals reproduce via mitosis and sexual animals via mieosis
The ability to taste the chemical PTC is determined by a single gene in humans with the ability to taste given by the dominant allele T and the inability to taste by the recessive allele t. Suppose two heterozygous tasters (Tt) have a large family.
QUESTION A: Predict the proportion of their children who will be tasters and non-tasters. Use a Punnett square to illustrate how you make these predictions.
QUESTION B: What is the likelihood that their first child will be a taster?
Answer:
ok
Explanation:
What are the unique properties of carbon
carbon have high catination property means self linking property
Select the process that either add or remove the carbon dioxide from the atmosphere reservoir
19. A gene is ____
if the alleles for a trait are different (Mm).
Answer: heterozygous
Explanation:Describes an organism that has two different alleles for a trait
2) Given DNA strand: TAT GGT GAT GTG TAG
mRNA strand:
amino sequence:
Answer:
mRNA: AUA CCA CUA CAC AUC
Protein: ILE PRO LEU HIS ILE
Your Mother needs to transfer (i.e., encode) a list of 25 vocabulary words from her STM to her LTM. She asks for your help. You suggest that she use elaborative rehearsal and you begin to train her in this technique. What do you ask your Mother to do?
1) you ask her to repeat the words over and over again
2) you ask her to give each word meaning by using each word in a sentence
3) you ask her to break down each word into various "chunks"
4) you ask her to memorize each word and its meaning
*PLEASE ADD EXPLANATION*
The best technique for your mother is that she uses each word in a sentence to give it a meaning, and remember it better (option 2).
Elaborative rehearsal is a common technique used to remember information in a long-term way. Due to this, this technique can be used to move information from short-term memory to long-term memory.
In this technique, the main purpose is to associate the new information with something you already know. In learning new words, this can include:
Associating new words to images.Creating examples of sentences.Associating a new word to a synonym you already know.In this context, the technique that is part of elaborative rehearsal is using the word in a sentence (option 2).
Learn more in: https://brainly.com/question/11231513?
can someone heelp me plz
Grace wanted to find out the best conditions for growing lettuce plants.
She took 4 trays and planted 8 lettuce plants in each.
The results of her investigation are shown below.
How many days did the investigation last?
Use the table to help you.
Explanation:
the investigation lasts for 7 days.
hope this helps you.
Which type of tree harvesting increases the chances of forest renewal?
Clear cutting
Strip cutting
Selective cutting
Slash and burn
Select cutting allows uneven aged trees as a result, it's more natural, and provides more diversity although it is more expensive
- BRAINLIEST answerer
The type of tree harvesting that increases the chances of forest renewal is Selective cutting.
What is Selective cutting ?Selective cutting exists as the cutting down of designated trees in a forest so that the growth of other trees exists not affected. This is done according to criteria concerning minimum tree size for harvesting, specifications of the numeral, spacing and size categories of residual trees per area, and allowable cut.
Selection cutting, also known as the selection system, stands the silvicultural practice of harvesting trees in a manner that drives a forest stand towards uneven-aged or all-aged circumstances, or 'structure'.
Learn more about Selective cutting refer to:
https://brainly.com/question/7324699
#SPJ2
what is the complementary DNA strands and plz write it the same way as the image.
Answer:
AAT-TTG-CTC-GAC-GAT
Explanation:
The complimentary strand contains the bases that the parent original strand binds to.
In a food web, a bird eats both
berries and insects. The bird is
considered a(n)
A. producer
B. heterotroph
C. chemotroph
60 POINTS! Describe the structure of atoms, including the electrical charges, the location (in or out of nucleus) and atomic mass (1 amu or less than 1 amu) of the following particles:1 pt for each blank Electron Charge____ Location __________ Mass ________ Neutron Charge ____ Location __________ Mass ________ Proton Charge ____ Location __________ Mass _________ Use the periodic table tile to answer questions #2 & 3 regarding Helium. 2. What is the atomic mass of Helium? Using that, determine the number of neutrons in a Helium atom. 3.What is the atomic number of Helium? What subatomic particle does it refer to? 4. Use the atomic model below to answer the following questions: 1 pt for each blank A picture containing chartDescription automatically generated a. How many protons? b. How many neutrons? c. What is the name of this atom? 5. Explain what a valence electron is. Using the atomic structure above (#4) give the number of valence electrons. 6. Describe the physical properties of Copper (Cu) based on what you know about metals, nonmetals, and metalloids. 7. What specific information about the atomic structure do the periods and groups give you? 8. 5 ZnSO4 a. Count the number of Sulfur atom = b. How many total atoms are given in the compound = 9. Li2SO4 a. Count the number of Sulfur atom = b. How many total atoms are given in the compound = 10. Al2(SO3)3 a. Count the number of Sulfur atom = b. How many total atoms are given in the compound = 11. A student conducts an experiment to separate water into hydrogen and oxygen as shown below. DiagramDescription automatically generated As a result the student collects 28.0 g of hydrogen and 224.0 g of oxygen. How many grams water did the student originally have involved in the experiment? 12. A nugget of gold has a mass of 965 g and a volume of 50 cm3. What is the density?
Answer: electron negative outside less than one amu
nuetron none inside one amu
protons positive inside one amu
2. nuetrons 2.0026
Explanation:
ssrrryyy i did all the things i could
How is the small intestine adapted to its function?
Answer:
The enzymes in the small intestine, help break the food up into smaller particles. Those tiny particles are then absorbed through the thin lining of the intestine into the bloodstream and are carried all where they are needed in the body. Therefore making it adapted to it's function, which is breaking down food including carbohdrates, fats and proteins :>
Explanation:
(*winks and runs of*)
What is the function of a plasma membrane that all living cell depends on
Answer:
The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell. And that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.
The Moon's repeated pattern of movement and changes in appearance is known as the revolution .It is due to the Moon?
Answer:
No, the patterns are made by the light of the sun that reflects on the moon. The darker part of the moon is caused by the shadow of the earth.
What is the name for the structure that allows one way movement of blood from the atria to the ventricle on the oxygenated side of the heart?
The heart is a muscular organ of the body that pumps blood to the organs of the body. The name for the structure that allows one-way movement of blood from the atria to the ventricle on the oxygenated side of the heart is;
The Mitral ValveThe valves of the heart prevent the backward flow of blood from the heart. There are four types of valves, namely, the tricuspid valve, the mitral valve, the aortic valve, and the pulmonary valve.
The oxygenated part of the heart is the left side. The mitral valve regulates the flow of blood from the left atrium to the left ventricle.
Therefore, the mitral valve allows one-way movement of blood from the atria to the ventricle on the oxygenated side of the heart.
Learn more here:
https://brainly.com/question/23779089
In the formation of coal, which stage has the lowest carbon content?
A. bituminous coal
B. lignite
C. anthracite
D. peat
Answer:
a
Explanation:
Answer:
Peat
Explanation:
Took the quiz