Answer:
False
Explanation:
Conjugation in Bacteria is transfer of genetic material between bacteria cells by direct contact between cells or by a bridge-like connection between two cells enforced by a structure called pillus.
There is the presence of an enzyme called traD enzyme close to the pillus which is produced by the donor cell for this process to occur.
There is also the presence of some transporter proteins that aids in the transfer of the genetic material from the donor cell to the recipient cell.
A historian is interested in conducting a deep analysis on the
American stock market crash of 1929 in an effort to understand
how economies shrink and grow over time. Which type of history is
he practicing?
Answer:
economic history
Explanation:
because it is based on economic matter that is to be investigated
Which sentence best describes what happens after sunlight hits photosystem
II?
A. Solar energy changes ADP into ATP.
B. NADPH turns into NADP+.
C. Glucose forms from carbon dioxide molecules.
O D. Electrons in the third protein gain new energy from light.
Answer:
A. Solar energy changes ADP into ATP.
Explanation:
The phase of the photosynthesis is based on the light that reacts as the pigment molecule absorbs energy from the sunlight and the photons strike the photosystem to initiate the photosynthesis. Energy transports through the electron that pumps hydrogen ions and forms an electrochemical gradient. The ADP is a combination of phosphate to form the ATP in the reaction i.e ADP +energy to ATP plus water. This usually takes place by the storage of high energy to ATP as sugar molecules that are sent phase of photosynthesis.Answer:
A. Solar energy changes ADP into ATP
Explanation:
Photosynthesis is the process in which plants make there own food by utilizing sunlight that converts water and oxygen into carbon dioxide and energy.
There are two systems in photosynthesis: Photosystem II and Photosystem I.
In photosystem II ADP + P is converted into ATP driven by electron gradients formed in the thylakoid membrane.
Hence, the correct answer is A.
what cycle do the light independed reaction use to tuen carbon dioxude into glucose, A. Calvin cycle, B. Krebs cycle, C. Gylcolytic cycle, D. Electron transport cycle.
Answer:
Calvin cycle
Explanation:
That takes place in the chloroplast of the plant cell in the absence of light.
Answer:
B. Krebs cycle
Explanation:
Krebs cycle occurs at the light independent stage where carbon dioxide is turned into glucose.
Hope it helps .
In your own words, explain why the geological structures in Florida are less complex than the geological structures in Colorado.
Answer:
the primordial sea. Colorado is just higher in elevation, prior to be driven up. More of the earths crust is exposed in Colorado than in Florida.
Why is it more important to check for errors during DNA replication than during translation?
A) An error in translation affects only one cell
B) Proteins function normally even when they have errors
C) Errors in DNA replication are not passed to more generations
D) Translation does not use a nucleic acid code
Answer:
It's A) An error in translation affects only one cell.
Explanation:
A.p.e.x
Checking for errors during DNA replication is more crucial than during translation because a translation error only impacts one cell. So, the correct option is A.
What is Translation?After DNA is converted to RNA in the cell's nucleus, the process of translation happens when ribosomes in the cytoplasm or endoplasmic reticulum synthesise proteins. Gene expression refers to the entire process.
Translation and transcription are fundamentally different from one another since translation requires transforming content into a different language, whereas transcription merely uses the original language. Also, translation is frequently a lot more complicated than transcription. Since a translation error only affects one cell, it is more important to check for faults during DNA replication.
Therefore, the correct option is A.
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"Discuss three factors that affect your daily food choices. For each factor with a negative outcome, suggest at least one change you could make in your daily behavior that would turn that negative outcome to a positive outcome.
Answer:
Three factors that affect my daily food choices include:
1. Taste
2. Length of time for preparation
3. Method of preparation.
Explanation:
When making choices for food, I tend to take several factors into consideration. Some of these factors include;
1. The taste of the food: If the food tastes good and is not too spicy I am more inclined to choose such food.
2. Length of time for preparation: Especially on stressful days, I tend to consider the length of time required to prepare a healthy meal. If it takes so much time I am more inclined to eat fast food which is not a good choice.
To change this negative outcome, I hope to plan my affairs for the day and prepare healthy meals beforehand, which could be stored in the refrigerator and reheated when I need it.3. Method of Preparation: Some foods require paying attention to details. For example, food that uses up, a lot of vegetables would require thorough washing to prevent particles in the food. Busy days also get me exhausted with no strength to pay attention to these protocols.
To turn this around, I hope to employ the help of a family member to make the process easier. I also hope to process most of my ingredients and keep them ready for use so that I would not have to do a lot of processing while cooking.describe some other kinds of activities that would benefit the most from each molecule n the table
Answer:
The macromolecules; protein helps to gain muscle, fat helps provide stored energy for longer period, carbohydrates provide immediate energy.
Explanation:
Proteins are the macromolecules that help on the muscle building and storage. Bodybuilders utilize proteins to build their body and muscle protein. Protein has equal energy value as carbohydrates.
Fat help in providing energy when there is no carbohydrate provided energy to utilize. In the winters some animals hibernate they utilize the fat provided energy during the hibernation period.
Carbohydrate gives energy immediately for the cellular process and also help athletes to provide energy immediately. Runners drink carbohydrates based drinks to get energy before the race.
The enzyme DNA (nuclease / telomerase / polymerase) joins (amino acids / nucleotides / sugars) to synthesize a new (complementary / opposite / paired) DNA strand.
What is meant by the following statement about the cell membrane?
The cell membrane is said to be semipermeable.
O A. It will not allow any molecules to pass through.
oso
O B. It does not contain any membrane proteins.
O C. It is very selective about what it allows to pass through.
D. It allows all polar molecules into the cell.
Fur color in mice is affected by a single gene. The gene for fur color has two alleles: B that causes dark brown fur, and b that causes light brown fur. In a mouse with dark brown fur, the genotype could be BB or:_________
Answer:
The genotype could be BB or Bb
Explanation:
The genotype could be Bb which means it has heterozygous alleles.
The B which is allele for dark brown fur is dorminant and b for light brown is recessive. In this case, the dorminant allele masked the effect of the recessive allele b which make the dorminant allele B to be expressed phenotypically.
The purpose breeding experiment is to develop ____________ plants with flowers expressing a new combination of form and shape.
Answer:
The purpose of breeding experiments is to develop varieties or different plants with flowers expressing a new combination of form and shape.
Explanation:
Breeding or plants breeding refers to process of changing or altering plants characteristics or traits to produce new plants varieties with desirable traits or characteristics. The purpose of breeding is to develop varieties plants that have the desired traits or characteristics . Also, it's purpose is to develop varieties of plants with flowers expressing a new combination of form and shape.
Experimental breeding is a way of crossing organisms with different alleles to produce new variety of crop with desired characteristics.
Can someone help me I don’t know which goes with which it’s different structures of the cell membranes
Answer:
I hoped I helped :))))
Explanation:
A. Extracellular Fluid
B. Hydrophilic Heads
C. Integral Protein
D. Hydrophobic Tails
E. Cytoplasm
F. Carbohydrate
What occurs during frameshift mutation?
A) Part of the chromosome breaks away, but reattaches normally.
B) Part of the chromosome breaks away, but reattaches in inverse orientation.
C) An extra chromosome is added, causing mismatching of the chromosome pairs.
D) There is a misreading of the base pairs during translation.
Answer:
C) An extra chromosome is added, causing mismatching of the chromosome pairs.
Explanation:
Mutation is any change, whether big or small, that occurs in the nucleotide sequence of a gene. Mutation can be of different types depending on how it occurs.
According to the question, frameshift mutation is a mutation that causes the normal reading frame of the nucleotide sequence to be altered. It is caused when an extra chromosome is added (insertion) or when one chromosome is removed (deletion). In either way, there will be a mismatch or alteration in the chromosome pair, hence affecting the reading of the nucleotide sequence.
In frameshift mutation, the insertion or deletion causes the
normal CODONS (triplet nucleotide) to be missing or incomplete, hence, disrupts the manner at which the reading takes place (reading frame). Note, frameshift mutation only occurs as a result of insertion or deletion of chromosomes/bases that are not multiples of three that can maintain the normal reading pattern/frame.
Explain effects of undersecretion and oversecretion of Growth hormone
Answer:
Under secretion causes dwarfism.
Over secretion causes gigantism.
If there is a high concentration of reducing sugar, Benedict’s solution will turn _______. A. Green B. Orange C. Red D. Blue
Answer: In lab, we used Benedict's reagent to test for one particular reducing sugar: glucose. Benedict's reagent starts out aqua-blue. As it is heated in the presence of reducing sugars, it turns yellow to orange. The "hotter" the final color of the reagent, the higher the concentration of reducing sugar.
Answer:
B. Orange
Explanation:
It is heated in the presence of reducing sugars, it turns yellow to orange. The hotter the final color of the reagent, the higher the concentration of reducing sugar.
A geneticist is studying sexual reproduction of a species of butterfly that lives in a very cold climate. He hypothesizes that there should be low genetic diversity because it is well adapted to the cold climate but does not seem to be able to colonize surrounding areas with warmer climates. What important principle is he using to formulate his hypothesis?
Answer:
It is a stenotopic species.
Explanation:
Stenotopic species are well adapted to specific environmental conditions. Stenotopic species can't colonize new environments because they are adapted to a narrow range of environmental conditions. On the other hand, the eurytopic species can survive and reproduce in a wide range of environments.
In this case, the geneticist has used a hypothetico-deductive framework, where this butterfly was distinguished by species boundaries based on its sampling distribution.
Identify which type of study the following example describes.
Severing the connections between visual regions and the rest of the brain in animals, and observing the animals failure to recognize objects,
Answer:
They are training animals in a maze and recording physiological changes in their brains, Stimulating a brain structure and recording subsequent changes in movement, Introducing two adults that are potentially attracted to each other, and then measuring their sex hormone levels, Measuring the brain volumes and intelligences of people in a group, Observing enlarged cerebral ventricles in the brains of many people with schizophrenia, Severing the connections between visual regions and the rest of the brain in animals, and observing the animals’ failure to recognize an object, and Studying the relationship between a sex hormone treatment and strength of an animal’s mating behavior.
Explanation:
Correctly order the production and transport of sperm through the male reproductive system. Semen is released from the penis. Sperm are produced in the testes. Sperm leave the testes through the semen duct. In the semen duct, fluids from the glands are added to the sperm.
Answer:
sperm are produced in testes. sperm leaves through the semen duct. In the semen duct,fluids from the glands are added to the sperm. semenis releasedfrom the penis
Answer:
4 semen is realeased through the penis
1 sperm is produced in the testes
2 sper leaves the semen duct
3 fluids from the glands add to the sperm
Explanation:
What caWhat can be known about Mendel’s five-part hypothesis?n be known about Mendel’s five-part hypothesis?
Answer:
It is an answer to a scientific question and is based mostly on research.
Explanation:
Mendel five part hypothesis was also known as the law of segregation. This law explain the how traits are inherited in living organisms. Mendel's theory discovered that there are two alleles for a single gene and that one of these alleles is inherited from each parent, which forms the basis of the trait in the progeny(offspring).
Mendel’s hypothesis was considered true after various experiments and analysis and also answer the question of how the different traits are passed on from parent to progeny. This validates it being an answer to a scientific question and it being based mostly on research.
Answer:
A) It is an answer to a scientific question and is based mostly on his research.
Explanation:
Edgnty
Which level of protein structure is formed by the sequence of amino acids bonded together?
Select one:
a. Primary
b. Secondary
c. Tertiary
d. Quaternary
e. Both tertiary and quaternary
If we chew rice or bread for a few minutes , it starts tasting sweet why
Answer:
Because the saliva is mixed completely
Also because of carbohydrates
Explanation:
(BTW that never happens to me I may vomit because it's pretty disgusting in real life )
Answer:
If we chew rice or bread for few minutes,it starts tasting sweet because it converts starch into glucose into sugar so it tastes sweet.
Suppose a population grows according to a logistic model with initial population 100 and carrying capacity 1,000. If the population grows to 250 after one year, what will the population be after another three years
Answer:
In this problem we only want to know the exponential growth of the population at a certain time, that is to say, three years, which means that its growth must be greater.
Explanation:
For this we determined the initial growth of the population at one year which is 250.
So making a rule of three:
1 year = 250
3 years = x
So, we have:
250 x 3 = 750; that is, the exponential growth in the third year is equivalent to 750.
The formation of new blood vessels in tissues that require them is called ____________ . This process helps ____________ through long-term anatomic changes that occur over several ____________ . This is seen in ____________ in response to aerobic training; in ____________ , this process occurs when an individual gains weight in the form of fat deposits. Another situation where the formation of new blood vessels occurs in response to ____________ , thus providing alternative routes to deliver blood to the heart wall.
Answer:
The formation of new blood vessels in the tissues that the muscles is called angiogenesis. This process helps organ growth through long-term anatomical changes that occur over several years. This is seen in the lungs and muscles in response to aerobic training; In adipose tissue, this process occurs when an individual gains weight in the form of fat deposits. Another situation in the formation of new blood vessels occurs in response to thrombosis or lack of blood supply, as well as alternative alternative routes to bring blood into the blood of the heart.
Explanation:
Angionesis is a process regulated and mediated by growth factors and angioblasts, it usually occurs in organs in the growth stage and also in both malignant and benign neoplasms.
Angiogenesis is a process that consists of different stages and is always fostered by a type of external stimulation such as increased physical activity, for example, but regulated by growth factors.
In the early stages, angioblasts trace a neoforomed path in the tissue or organ and then these are assembled, forming the lumen of the vessel and giving its collaterals or ramifications.
If two genes are found on different chromosomes, or if they are far enough apart on the same chromosome that the chance of a crossover between them is very high, the genes are considered to be unlinked. Unlinked genes follow Mendel’s law of independent assortment. If, however, two genes tend to "travel together" because they are near one another on the same chromosome, they are said to be linked. Linked genes do not follow Mendel’s law of independent assortment. In this tutorial, you will compare the inheritance patterns of unlinked and linked genes.
Part A - Independent assortment of three genes
A wild-type tomato plant (Plant 1) is homozygous dominant for three traits: solid leaves (MM), normal height (DD), and smooth skin (PP).
Another tomato plant (Plant 2) is homozygous recessive for the same three traits: mottled leaves (mm), dwarf height (dd), and peach skin (pp)
Leaves Height Fruit Plant 1 solid normal Smooth (PP) (MM) (DD) Plant 2 mottled (mm) dwarf peach (Pp) (dd)
In a cross between these two plants (ADOPPx mmddpp), all offspring in the F, generasion are wild type and heterozygous for all three traits (AmDdPp)
Now suppose you perform a testcross on one of the F, plants (mOoPpx mmodpp). The F, generation can include piants with these eight possible phanotypes
a) solid normal, smooth
b) solid norma peach
c) solid dwarf smoom
d) solid dvarf, peach
a) motted nomal, amooth
b) motted, normal pesch
c) mottied, dwad smooth
d) moted dwaf peach
Assuming that the three genes undergo independent assortment, predict the phenotypio ratio of the offspring in the F, generation.
Complete question:
A wild-type tomato plant (Plant 1) is homozygous dominant for three traits: solid leaves (MM), normal height (DD), and smooth skin (PP).
Another tomato plant (Plant 2) is homozygous recessive for the same three traits: mottled leaves (mm), dwarf height(dd), and peach skin (pp).
In a cross between these two plants (MMDDPP x mmddpp), all offspring in the F1 generation are wild type and heterozygous for all three traits(MmDdPp).
Now suppose you perform a testcross on one of the F1plants (MmDdPp x mmddpp). The F2 generation can include plants with these eight possible phenotypes:
solid, normal, smooth
solid, normal, peach
solid, dwarf, smooth
solid, dwarf, peach
mottled, normal, smooth
mottled, normal, peach
mottled, dwarf, smooth
mottled, dwarf, peach
Assuming that the three genes undergo independent assortment, predict the phenotypic ratio of the offspring in the F2 generation.
Answer and Explanation:
Cross 1:
Parental) MMDDPP x mmddpp
F1) MmDdPp
Cross 2: Testcross
Parental) MmDdPp x mmddpp
Gametes) MDP MdP MDp Mdp mDP mdP mDp mdp
mdp mdp mdp mdp mdp mdp mdp mdp
Punnet Square)
mdp
MDP MmDdPp
MdP MmddPp
MDp MmDdpp
Mdp Mmddpp
mDP mmDdPp
mdP mmddPp
mDp mmDdpp
mdp mmddpp
F2) 8/64 = 1/8 MmDdPp, solid leaves, normal height, smooth skin
8/64 = 1/8 MmddPp, solid leaves, dwarf height, smooth skin
8/64 = 1/8 MmDdpp, solid leaves, normal height, peach skin
8/64 = 1/8 Mmddpp, solid leaves, dwarf height, peach skin
8/64 = 1/8 mmDdPp, mottled leaves, normal height, smooth skin
8/64 = 1/8 mmddPp, mottled leaves, dwarf height, smooth skin
8/64 = 1/8 mmDdpp, mottled leaves, normal height, peach skin
8/64 = 1/8 mmddpp, mottled leaves, dwarf height, peach skin
Another way of predicting the phenotypic ratio of the offspring in the F2 generation is by performing a testcross for each gene by separately and then multiplying their genotypic proportions. This is:
Leaves Gene
Parental) Mm x mm
Gamtes) M m m m
Punnet Square) M m
m Mm mm
m Mm mm
F2) 1/2 Mm
1/2 mm
High Gene
Parental) Dd x dd
Gamtes) D d d d
Punnet Square) D d
d Dd dd
d Dd dd
F2) 1/2 Dd
1/2 dd
Skin Gene
Parental) Pp x pp
Gamtes) P p p p
Punnet Square) P p
p Pp pp
p Pp pp
F2) 1/2 Pp
1/2 pp
To get the phenotypic ratio of the offspring we multiply the genotypic proportion for each trait by the genotypic proportions of the other two traits, like this:
For plants with solid leaves, normal height, smooth skinsolid leaves ratio -> 1/2
normal height ratio -> 1/2
smooth skin ratio -> 1/2
MmDdPp ratio: 1/2 x 1/2 x 1/2 = 1/8
For plants with solid leaves, dwarf height, smooth skinMmddPp ratio: 1/2 x 1/2 x 1/2 x 1/2 = 1/8
For plants with solid leaves, normal height, peach skinMmDdpp ratio: 1/2 x 1/2 x 1/2 x 1/2 = 1/8
For plants with solid leaves, dwarf height, peach skinMmddpp ratio: 1/2 x 1/2 x 1/2 x 1/2 = 1/8
For plants with mottled leaves, normal height, smooth skinmmDdPp ratio: 1/2 x 1/2 x 1/2 x 1/2 = 1/8
For plants with mottled leaves, dwarf height, smooth skinmmddPp ratio: 1/2 x 1/2 x 1/2 x 1/2 = 1/8
For plants with mottled leaves, normal height, peach skinmmDdpp ratio: 1/2 x 1/2 x 1/2 x 1/2 = 1/8
For plants with mottled leaves, dwarf height, peach skinmmddpp ratio: 1/2 x 1/2 x 1/2 x 1/2 = 1/8
how oxygen, nutrients, and wastes are exchanged between maternal and fetal
blood via the placenta?
Answer: The blood vessels in the umbilical cord, the fetus receives all the necessary nutrition, oxygen, and life support from the mother through the placenta.
Explanation:
Each of the following statements is either true or false.
1. The microscope lens may be cleaned with any soft tissue.
A. True
B. False
2. The microscope should be stored with the ail immersion lens in position over the stage.
A. True
B. False
3. When beginning to focus, use the ssanning objective lens.
A. True
B. False
4. When focusing on high power, always use the coarse adjustment knob to focus.
A. True
B. False
5. A coverslip should always be used with wet mounts.
A. True
B. False
Answer:
1.false.
There are special lense tissues for this which will not scratch the lense so that the focal power will nit be affected. Grit -free lens paper,Kimwipes or Kodak lens are ideal cleaning materials.
2.This is also false. Microscope should be covered with dust cover, and even in the cabinet,It should never be left without am eyepiece.
3.True.
This gives he lowest magnification, which allows for wide view of the specimen in order get the specific spot to focus on.It has magnification power of 10x eyepiece lens.Thus a 4x scanning objective lens therefore gives total magnification of 40x.
4.False,
This will break the objective lens.Fine adjustment knob should be use.This will gives the sharpest focus,using a coarse knob will crack the lens because the working distance for focusing will be too small, and suing this will damage the objective lens,
5.False,only the wet mount should be used.High power and oil lens should not be used as this will reduce the efficiency of the microscope.
Which have different numbers of electrons? different ions of an element different isotopes of an element the nucleus of an element each of the atoms of an element
Answer:
different ions of an element
Explanation:
An ion is an atom that has different number of protons and electrons.
An isotope is an atom of an element with a different number of neutrons.
The nucleus of an element have only protons and neutrons.
Each of the atoms of an element have same number of protons, electrons, and neutrons.
Different ions of an element have different numbers of electrons. The correct option is A.
What are electrons?Electrons are the negatively charged particles that are present indie the atoms. They revolve around the nucleus. They are also called subatomic particles. Furthermore, they are present freely or bound to the nucleus.
Elements are the species of atoms that are distinguished from each other by the number of protons in them. There are 118 elements are discovered now.
When an atom attracts another atom, they have different numbers of electrons, they are called ions. So it is clear that different ions have different numbers of electrons in an atom.
Thus, the correct option is A. different ions of an element.
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Each of the following occurs during apoptosis of a cell except:__________. a. bleb formation. b. formation of apoptotic bodies. c. rupture of the cell, releasing cytoplasmic contents. d. DNase fragmentation of DNA flipping phosphatidylserine to the outer leaflet of the plasma membrane.
Explanation:
The process of programmed cell death, or apoptosis, is generally characterized by distinct morphological characteristics and energy-dependent biochemical mechanisms.
which best describes what is required for any sound wave to travel?
Answer:
Light does not need a medium to travel through, but since sound waves must have a medium to vibrate, sound is not created where no air is present. ... A mechanical wave transfers energy through matter.
This exercise is designed to help understand the naming process of a few se muscle names. The other column is a list of descriptions of which the muscle na match the left column with the right column. The first one is competed to help youg lect muscles. One colunn lists the mes were based on. You are to et started.
Adductor magnus
_____A_______Adductor A. Action (type of movement)
magnus B. Shape
Vastus lateralis C. Site of origin or insertion (Points of attachment)
lateralis D. Number of origins
E. Location to a nearby bone
Biceps femoris
Biceps F. Direction the muscle fibers are oriented
femoris G. Size of muscle
Fibularis longus H. Location to a superficial area
一Fibularis
longus
Popliteus
Popliteus
Answer:
Explanation:
Brachii: H - It means of the arm.
Palmaris: H - It means of the palm of hands.
Longus : G - Longus means long
Brachio: C - It refers to origin on the upper arm.
Radialis: C - It refers to insertion on the radius of the forearm.
Pronator: A - Pronation is inward rotation of part of the body towards middle of the body.
Teres: B - meaning round or cylindrical shape
Deltoid: B - meaning triangular shape