Answer:
0.859 minutes of arc
Explanation:
The arc length for a given radius and angle in radians is ...
s = rθ
So, the angle is ...
θ = s/r
For the given geometry, the angle in radians is ...
θ = (0.75 mm)/(3000 mm) = 0.00025 radians
In minutes of arc, this is ...
(0.00025 radians)(60 minutes/degree)(180 degree/(π radians)
= (0.0025)(60)(180)/π minutes
≈ 0.859 minutes
The angle subtended is about 0.859 minutes of arc.
The regulatory genes that encode for the repressor protein are always being transcribed; it is the presence or absence of the lactose molecule that controls whether the operon is on or off.
a) true
b) false
Answer:
The answer is A.
Explanation:
The lac repressor protein can prevent or let the transcription and production of the operan. When there is lactose not present in the body, the lac repressor protein prevents the production of the operan by RNA polymerase but when lactose is present, it let's the operan to get produced . So the answer is yes, the presence of the lactose molecule controls whether the operon is on or off.
I hope this answer helps.
A sample of a rare metal weighs 18.15 g. Several labs weigh the sample repeatedly. Which lab has the most precise measurements? A. Lab 1: 17.99 g, 18.15 g, 18.23 g B. Lab 2: 18.1 g, 18.3 g, 18.2 g C. Lab 3: 18.11 g, 18.13 g, 18.97 g D. Lab 4: 18.93 g, 19.03 g; 18.95 g
Answer:
D. Lab 4
Explanation:
Measurements in scientific experiments require the collection of data. The precision of a measurement refers to how close a measurement value is to one another.
N.B: The accuracy of a measurement is different from the precision. Accuracy is how close the measured values are to the true value.
To calculate the precision of measured values in different labs for a weighed metal, we use the range of values i.e. the difference between the highest value and lowest value for each lab.
Lab 1: 17.99 g, 18.15 g, 18.23 g
Range= 18.23 - 17.99 = 0.24
Precision result (mean±range)= 18.12±0.24
Lab 2: 18.1 g, 18.2 g, 18.3 g
Range= 18.3 - 18.1 = 0.2
Precision result: 18.2±0.2
Lab 3: 18.11 g, 18.13 g, 18.97 g
Range= 18.97 - 18.11 = 0.86
Precision result: 18.40±0.86
Lab 4: 18.93 g, 18.95 g, 19.03 g
Range= 19.03 - 18.93 = 0.1
Precision result: 18.97±0.1
Based on the range of values in the precision results from each lab, it is evident that Lab 4 has the most precise measurements because the repeated values didn't vary much from one another compared to values from other labs.
The presence of a transit sequence directs a protein from the ________ to the ________. The presence of a transit sequence directs a protein from the ________ to the ________. signal recognition particle; nucleus cytosol; plasma membrane endoplasmic reticulum; Golgi apparatus endoplasmic reticulum; nucleus cytosol; mitochondrion or chloroplast
Answer:
The correct answer is "nucleus cytosol; mitochondrion or chloroplast".
Explanation:
A transit sequence, also known as signal peptide, in a protein is a series of amino acids that indicate that a protein is not synthesized matured, and a portion of the protein must be cleaved in order to have the protein in its mature form. Transit sequences serves as regulators of protein transport, since they indicate that a protein must transit from the nucleus cytosol to different organelles, such as the mitochondrion or chloroplast. Examples of this type of proteins, include: alcohol dehydrogenase, DNA polymerase, and RNA polymerase.
H2 is a molecule, but H2O is a _____. diatomic molecule compound neuron photon
Answer:
Compound.
Explanation:
If a molecule consists of 2 or more elements its a compound.
Answer:
[tex]\Large \boxed{\mathrm{compound}}[/tex]
Explanation:
[tex]\sf H_2O[/tex] is a compound.
A compound consists of two or more elements that are chemically bonded together.
Classify the following examples and characteristics depending on what type of change in chromosome structure it describes.
1. May or may not cause physical abnormalities
2. Examples include Alagille syndrome, chronic myelogenous leukemia, and Burkitt leukemia
3. Occurs when pieces of a chromosome are exchanged between non-homologous pairs
4. Occurs when a piece of a chromosome breaks and reattaches upside down
5. Translocations Deletions Occurs when the same piece is repeated within a chromosome 5
6. Examples include Wiliams syndrome and Cri du chat syndrome
7. Occurs when pieces of a chromosome are lost
A. Duplications
B. Inversions
C. Translocations
D. Deletions
Answer:
1. It depends on the DNA region that has been affected by the chromosome rearrangement
2.Translocations
3.Translocations
4. Inversions
5. Duplications
6. Deletions
Explanation:
A translocation is a chromosome rearrangement where a chromosome fragment breaks off and the resulting portion attaches to another genome region. An inversion occurs when a single chromosome fragment is reversed end to end, thereby also producing a chromosome rearrangement. Inversions can be classified into pericentric (include the centromere) and paracentric (not include the centromere). Finally, chromosome duplications and chromosome deletions are opposite rearrangements where chromosome portions are copied in tandem and eliminated, respectively.
what is bun food source
Answer:
Urea nitrogen is a normal waste product that your body creates after you eat.
Explanation:
Arrange the objects from smallest to largest in the solar system
Answer:
Asteroid,moon,planet,star,solar system,galaxy, universe
You collect a specimen from a deep jungle survey. It appears to be a new species. You get to name it, but before you can, you must classify it first. It appears to be single celled, and contains chloroplasts. When a few of them are kept in the dark too long, they die. Under the microscope you can see a dark colored nucleus. What classification fits them best?
Answer:
This question is incomplete/lacks options, the options are:
A) Plant-like protists
B) Plants
C) Fungus
D) Archeaebacteria
The answer is A) Plant-like protists
Explanation:
Organisms of the kingdom protista are eukaryotic (possess a membrane-bound nucleus) unicellular or multicellular organisms that can be autotrophic or heterotrophic in nature depending on whether they are plant or animal like. Protists are classified borganisms that do not fit into the other group classification i.e. fungi, plant, animal and bacteria.
However, organisms in the group called PROTISTS can either be animal-like or plant-like depending on whether they possess some animal or plant characteristics respectively. Plant-like protist, like the organism described in the question, have CHLOROPLAST organelles like plants and hence, can perform photosynthesis in the presence of sunlight to synthesize their own food. This characteristics makes them autotrophic like plants.
Therefore, based on the characteristics of the new specimen collected from a deep jungle survey, the classification that fits it best is PLANT-LIKE PROTISTS.
Which is a true statement regarding metastasis? Increased cell-to-cell adhesion helps metastasis. Lack of proteases and collagenases aids in metastasis. Cells must first escape the basement membrane of tissue. Penetration of the basement membrane of the vessel occurs first.
Answer: The correct answer to the question is option C
CELLS MUST FIRST ESCAPE THE BASEMENT MEMBRANE OF TISSUES.
Explanation: For any tumour cell to be able to gain entry into the lymphatic circulation or into the blood,there must first be an escape of the tumour cell from the basement membrane of the tissue it originated from,when the tumor first moves out if the basement membrane,it further moves through the extracellular space and then finds its way to the basement membrane of the vessel.
Spread of the tumour cells from it's point of origin (metastasis) is thought to involve the loss of cell to cell adhesion proteases and collagenases digestion of the basement membrane.
The basement membrane of the vessel can only be penetrated only if and after the basement membrane of the affected organ has been affected/breached.
Determine the mass of the regularly shaped balls. Use a mass balance to record the masses of the table tennis ball and golf ball in grams. Record the mass of each below: Tennis ball is 1.0 grams, the golf ball is 20.3 grams Tennis ball is 2.7 grams, the golf ball is 46.0 grams Tennis ball is 1,000 grams, the golf ball is 500 grams They both have no mass
Answer:
Tennis ball is 2.7 grams, the golf ball is 46.0 grams
Explanation:
The values were measure on a scale and found to be 2.69 g and 46 g for the table tennis and golf ball respectively. These values are approximately close to the international standards of 2.7 g and 45.93 g.
Answer:
you are going to get this right
Explanation:
There are 20 mice in a 5 m2 field ecosystem. The population density of mice is _____
Answer:
D
Explanation:
The population density would be 20 / 5 = 4 mice per m².
What is the entire object shown in the image?
Answer:eukaryote
Explanation:
The object shown in the image is a b. eukaryote
A Eukaryote is an organism that has either a single cell or multiple cells. These cells have:
a nucleus which contains genetic materialplasma membranecytoplasm ribosomesThe picture shown is that of a eukaryotic cell where the nucleus and the plasma membrane are visible.
Because these features are present, we can conclude that this is a eukaryotic cell.
Find out more at https://brainly.com/question/17299888.
Options for this question include:
a. prokaryote
b. eukaryote
c. chloroplast
d. mitochondrion
A woman with normal blood clotting ability whose father was a hemophiliac and whose mother was normal with no family history of hemophilia marries a man whose blood has normal clotting ability. Recall that hemophilia is an X-linked trait. What is the probability that their first child will be a son with hemophilia
Answer:
The answer is 25%.
Explanation:
Hemophilia is a recessive illness that is x-linked.
If the husband has normal clotting ability, that means he has the dominant gene since he has only one X chromosome.
Since there is a probability that their child will have hemophilia, this means that the woman, who has 2 X chromosomes but has normal blood clotting abilities, has one dominant and one recessive hemophilia gene.
The probability that their first child will be a male is 50% and the probability that he will have hemophilia is also 50% since he will only get the Y chromosome from the father and the mother has one dominant and one recessive.
So the probability that their first child will be a son with hemophilia is 25%.
I hope this answer helps.
Calculate the volume of 1 M NaOH needed to prepare 12.0 mL of a 0.10-M solution. Prepare this solution. (Refer to the Dilutions section in the Background.)
Answer:
1.2 mL
Explanation:
This is a problem of simple dilution. The dilution principle simply agrees that the number of moles before dilution must be equal to the number of moles after dilution.
Recall that: number of moles = mass/molar mass or molarity x volume.
Hence, for the dilution principle:
initial molarity x initial volume = final molarity x final volume.
In this case, initial molarity of NaOH = 1 M, initial volume = ?, final molarity = 0.1 M, final volume = 12.0 mL.
Initial volume = final molarity x final volume/initial molarity
= 0.1 x 12/1 = 1.2 mL
It thus means that 1.2 mL of 1 M NaOH would be taken and then diluted up to 12.0 mL mark by the addition of distilled water in order to produce 12.0 mL, 0.10 M NaOH solution.
The volume should be 1.2 mL
What is the dilution principle?It should be agreed that the no of moles prior to the dilution should be equivalent to the no of moles after dilution
We know that
number of moles = mass / molar mass or molarity x volume.
According to the above principle, we can say that
initial molarity x initial volume = final molarity x final volume.
So,
initial molarity of NaOH = 1 M,
initial volume = ?,
final molarity = 0.1 M,
And, final volume = 12.0 mL.
So,
Initial volume = final molarity x final volume/initial molarity
= 0.1 x 12/1
= 1.2 mL
Hence, The volume should be 1.2 mL
Learn more about volume here: https://brainly.com/question/13011592
All of the following are factors that affect population growth rate except:
immigration
climate
birth
death
Answer:
climate
Explanation:
climate does not directly affect population growth rate
Answer:
climate! first day a school, well for me hope u r good to go! :)
Explanation:
give the other person brainliest (its not fair if they dont get it)
Jamie has decided to breed rabbits. Her male rabbit is white, while her female rabbit is black. They produce a litter of black and white spotted rabbits. Assuming that coat color is controlled by only 1 gene, is this codominance or incomplete dominance? Justify your answer.+
The answer would be CODOMINANCE because codominance is when 2 genotypes show up at the same time on an object, where incomplete dominance is when 2 different genotypes combine and create a whole new phenotype
How does a cell normally make a thermodynamically disfavored reaction go forward?
Answer:
by producing enzymes that catalyze non-spontaneous reactions
Explanation:
Thermodynamically disfavored reactions can be referred to as nonspontaneous reactions (ΔG > 0). An enzyme is a catalyst molecule (generally proteins) capable of converting a non-spontaneous reaction into a spontaneous reaction and improve the speed of one chemical reaction in the cell. Enzymes are capable of reducing the energy of the transition state of a chemical reaction (rate of the reaction), thereby modifying the kinetics of a reaction.
What is the difference between the review of systems and the physical examination sections of the H?
Answer:
The difference between the review of systems and the physical examination sections of the H is discussed below in details.
Explanation:
The Review of Systems (ROS) is a precise record of potential indications the patient may be feeling, created by body system. Alternative titles cover Systemic Review and Functional Table. It also may be related to as a twelve Point Review of Systems.
The Physical Examination (PE) is an accurate estimation of the patient’s situation. The examiner examines, pokes, and prods the patient and registers the results here.
please please answer ITS DUE IN 20 MIN How do we know which lions are related to each other?
Answer:
1. Females tend to remain in the pride in which they are born, so they are usually related to each other.
2. Is identifiable from the whisker spots, which are found on each side of the face in rows.
Explanation:
what's the balanced equation for nitric acid + aluminium oxide = aluminium nitrate + water
Answer:
Al₂O₃ + 6HNO₃ → 2Al(NO₃)₃ + 3H₂O
Explanation:
left side of arrow right side of arrow
Al 2 1
O 3 1
H 1 2
NO₃ 1 3
Al₂O₃ + 6HNO₃ → 2Al(NO₃)₃ + 3H₂O
now there are,
left side of arrow right side of arrow
Al 2 2
O 3 3
H 6 6
NO₃ 6 6
you have to try and multiply different numbers and stop when you have equal molecule on both sides of the arrow.
Answer:
6HNO₃ ₊ Al₂O₃ ⇒ 2Al(NO₃)₃ ₊ 3H₂O
Explanation:
HNO₃ ₊ Al₂O₃ ⇒ Al(NO₃)₃ ₊ H₂O
H=1 Al=1
N=1 N=3
0=3 0=9
AL=2 H=2
O=3 0=1
6HNO₃ ₊ Al₂O₃ ⇒ 2Al(NO₃)₃ ₊ 3H₂O
H=6 H=6
N=6 N=6
O=18 O=18
Al=2 Al=2
O=3 O=3
aggregate demand is everything produced while simple demand is one good. what statement reflects that aggregate demand? A. calculating average price level B. calculating price C. calculating quantity demanded
Answer:
I think the correct answer is B. calculating price
Which one of these can be rearranged into a type of flower? A. FSNWOLRUE B. LBANEQUT C. NRABE D. VLEBQA
Answer:
flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Magnoliophyta, also called angiosperms). The biological function of a flower is to affect reproduction, usually by providing a mechanism for the union of sperm with eggs. Flowers may facilitate outcrossing (fusion of sperm and eggs from different individuals in a population) resulting from cross pollination or allow selfing (fusion of sperm and egg from the same flower) when self pollination occurs.
Pollination have two types which is self-pollination and cross-pollination. Self-pollination happened when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant. Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species. Self-pollination happened in flowers where the stamen and carpel mature at the same time, and are positioned so that the pollen can land on the flower’s stigma. This pollination does not require an investment from the plant to provide nectar and pollen as food for pollinators.[1]
Some flowers produce diaspores without fertilization (parthenocarpy). Flowers contain sporangia and are the site where gametophytes develop. Many flowers have evolved to be attractive to animals, so as to cause them to be vectors for the transfer of pollen. After fertilization, the ovary of the flower develops into fruit containing seeds.
In addition to facilitating the reproduction of flowering plants, flowers have long been admired and used by humans to bring beauty to their environment, and also as objects of romance, ritual, religion, medicine and as a source of food
Explanation:
the answer is FSNWOLURE
Which of the following is the best way to make
a conclusion?
A. The experiment must be manipulated
until the results show what you want
B. Estimate results to where they should be
C. Choosing the results you like best
D. Comparing data from the experiment to
When comparing a cell just before the first meiotic division with another cell of the same organism that is ready to start mitosis, we can correctly conclude that both cells present: * Select the correct option (s) I. Equal amount of DNA. II. Equal amount of chromatids on your chromosomes. III. Equal number of chromosomes.
Answer:
III. Equal number of chromosomes.
Explanation:
Comparison between two cells, one cell just before first meiotic division and other cell ready to start mitosis is that both the cells have equal number of chromosomes.
Both the cells have an equal number of chromosomes that is 2n (diploid), where n is 23 and total chromosomes are 46 in each cell but at the meiosis at the end meiosis produces four haploid (n) daughter cells and mitosis produces two diploid (2n) cells.
Hence, the correct answer is "III. Equal number of chromosomes.".
Which of the following abiotic factors affects the ocean by creating disturbances that move energy through the water? Nutrients Oxygen Salinity Waves
Answer:
[tex]\huge \boxed{\mathrm{Waves}}[/tex]
Explanation:
Waves affect the ocean by creating disturbances that move energy through the water.
As the wind blows on the surface of the ocean, waves are created that transmit energy through the water from a starting point to an end point.
Hey There!!~
Your best answer choice is D). Waves. Well, Why is it important? Because, The abiotic factors is a non-living parts of the enivorment that they can have living organisms which it have "water","sunlight", "oxygen", "soil" and tempture. And, That's why it's important because the water also helps the organisms to keep the ocean and maintain it purpose. But, It can also can affect the ocean as well. Because, Just saying if you were going into a sunny day and you what dive into the pool. But, The water dosen' t seem to be right. Because, The organisms left the ocean. Because the much the heat goes into the ocean it doesn't adapt to the ocean anymore. Well, I'm
not great at explanation stuff....
But, Hope That You!!~
Mateo has a fish in a fish tank. Every day, he feeds the fish flakes of food. He also changes the water as necessary. He has an aerator that pumps bubbles into the tank. Which sentence shows that the fish has a place to live? Mateo has a fish in a fish tank. Every day, he feeds the fish flakes of food. He also changes the water as necessary. He has an aerator that pumps bubbles into the tank.
Answer:
He has an aerator that pumps bubbles into the tank.
Explanation:
because a aerator brings air into the tank
Answer:
A. mateo has a fish in the tank
Explit says its in a tank
Is a tardigrade a living thing
Answer:
Yes!
Explanation:
Tardigrade, (phylum Tardigrada), also called water bear or moss piglet, any of more than 1,100 species of free-LIVING tiny invertebrates belonging to the phylum Tardigrada. They are considered to be close relatives of arthropods
Which of the following do all mature anterior teeth have?
Answer:
8 and 9.
Explanation:
It is 8 and 9 because
The anterior teeth are the group of incisors and canine teetths that are different from the posterior teeth, which are the premolars and molars.
Permanent incisors are the eight most anterior teeth of the permanent dentition with four present in each of the dental arch
What biological macromolecule is made up of monomers like the one shown below? A. Lipid B. Nucleic acid C. Protein D. Carbohydrate
Answer:
D. Carbohydrate
Explanation:
Answer:
lipids
Explanation:
I just did it and got it right
5. You are attempting to view a Gram-stained slide in your microscope. You can focus on the bacteria perfectly using the 10X objective, but you cannot focus on them at all under 40X or 100X no matter how much you adjust it (the entire range of the focus knobs will not allow you to get the slide in focus). Assuming your microscope is fully functional, what is the most likely problem? (1pt)
Answer:
See the answer below
Explanation:
When an object on a sample slide can be perfectly focused at lower objective but cannot be focused at higher objectives, the problem can be attributed to two factors depending on the size of the objective:
1. At 40X objective, the most likely problem would be that the object on the sample slide is not in the center of the field. Adjusting the slide until the object on it is at the center of the field would likely solve this problem.
2. At 100X objective, the problem could also be that the object on the slide is not at the center of the field, could be that there is no immersion oil on the slide or a combination of the two factors. Dropping an immersion oil on the slide and adjusting the slide to bring the object on it to the center would solve this problem.