Answer:
Radius of circle = 40 cm (Approx.)
Explanation:
Given:
Angle subtended by a section = 100°
Perimeter of the sector = 150cm
Find:
Radius of circle
Computation:
Perimeter of the sector = 2[Radius of circle] + Length or arc
150 = 2[r] + [θ/360][2πr]
150 = 2[r] + [100/360][2(3.14)r]
150 = 2[r] + [0.277][2(3.14)r]
150 = 2[r] + 1.74r
150 = 3.74r
r = 40 cm (Approx.)
Radius of circle = 40 cm (Approx.)
a. The P/O ratio of NADH is the mitochondria is _____________.
b. This means protons are pumped across the mitochondrial membrane by each NADH oxidized starting with complex The P/O ratio of FADH2 in bacteria is_____________.
Answer:
a). 2.3
b). 1.5
Explanation:
The P/O ratio stands for the[tex]\text{ phosphate / oxygen ratio}[/tex] in the cells. The P/O ratio is defined as the [tex]\text{amount of}[/tex] [tex]ATP[/tex] which is [tex]\text{produced from the movement}[/tex] of the two electrons by a defined electron transport chain and it is terminated by the reduction in the oxygen atom.
The P/O ratio of NADH in mitochondria [tex]10/(3.3 + 1) = 10/4.3 \approx 2.3[/tex]
The estimated P/O ratio for [tex]$FADH_2$[/tex] = 1.5
The development of vascular tissues helped plants become more successful
on land by
A. enabling gametes to live longer without a water supply
B. making the conversion of sunlight to sugar possible
C. causing them to become sporophytes
D. allowing water to move throughout a plant within its body
Can y’all please assist me.
do roots have guard cells and therefore stomata?
Answer:
Explanation:
Besides, plastids of the root guard cells (GCs) do not differentiate into chloroplasts but function solely as amyloplasts. Root stomata have a short life span. During rapid and intense root growth, GCs cannot keep pace with the elongation of their neighbouring rhizodermal cells
Which of the follow is not a part of the quality control process?
Question 1 options:
1)
Preparation of reagents
2)
Calibration and maintenance of critical equipment
3)
Continuing education
4)
Experimental controls
5)
Validation of protocols
Answer:
I don't understand the question
Explanation:
but number 2
im desprate pleas help !!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:a,c,d,b
Explanation:room anatomy
Answer:
1. a
2. b
3. b
4. c
Explanation:
The average amino acid length of proteins in Escherichia coli is 235. Therefore, according to the video, the elongation time for an average E. coli protein would be about _______seconds.
How is the small ribosomal unit positioned to allow for translation to start at the proper start codon?Choose one:
A. Shine-Dalgarno sequence
B. The start codon sequence is specifically attracted to the P site.
C. Initiation factors position the mRNA accordingly.
D. The small ribosomal subunit starts at the far 5' end of mRNA where the start codon is located.
Answer:
approximately 15 seconds
A. Shine-Dalgarno sequence
Explanation:
In Escherichia coli, it has been shown that the translation elongation rate is approximately 16 amino acids per ribosome per second (16 x 15 = 240). On the other hand, the Shine-Dalgarno sequence is a polypurine stretch of variable length present in prokaryotic cells and acts as a ribosomal binding site for the messenger RNA (mRNA). This sequence can base-pair to a complementary sequence known as the 'anti-Shine-Dalgarno sequence' at the 3' end of the bacterial 16S rRNA subunit and is required to initiate the process of translation by which a polypeptide chain is synthesized. Generally, the Shine-Dalgarno sequence is located from 10 to 8 nucleotides upstream of the start codon (AUG codon). In E. coli, the Shine-Dalgarno sequence is AGGAGGU.
What effect can groundwater have on land?
A.) Increase in ground altitude
B.) Formation if sinkholes
C.) Decrease in oil salinity
D.) Formation of wetlands
Edited response:
B) Formation of sinkholes
Explanation:
"Groundwater pumping for urban water supply and for irrigation can produce new sinkholes in sinkhole-prone areas"
TIME REMAINING
55:07
RE
Which level of organization includes all the other levels of organization?
O organ system
O organism
O tissue
O cell
Save and Exit
Next
Submit
Mark this and return
Answer:
organism
Explanation:
the reason is that all the levels organisation make up an ORGANISM
Place a word or phrase from the left into each blank in a sentence on the right to make it correct.
a. tibialis anterior
b. extensor hallucis longus
c. lateral condyle
d. extensor retinacula
e. medial epicondyle
f. extensor digitorum longus
A. The_________ are the broad ligamentous sheets that contain the tendons of the anterior compartment muscles.
B. Inversion and dorsiflexion of the foot is achieved by contracting the _________muscle.
C. The _________ muscle has a skeletal attachment on the distal phalanx of the first digit.
D. The___________ of the tibia is a skeletal attachment site of the tibialis anterior muscle.
Answer:
A. The d. extensor retinacula are the broad ligamentous sheets that contain the tendons of the anterior compartment muscles.
B. Inversion and dorsiflexion of the foot is achieved by contracting the a. tibialis anterior muscle.
C. The b. extensor hallucis longus muscle has a skeletal attachment on the distal phalanx of the first digit.
D. The c. lateral condyle of the tibia is a skeletal attachment site of the tibialis anterior muscle.
Explanation:
The two extra options are the f. extensor digitorum longus and the e. medial epicondyle. The first one is a muscle in the anterior part of the legs that originates in the anterior lateral condyle of the tibia and the anterior part of the fibula. Its insertion is in the four phalanges of the 2, 3, 4, and 5 digits. The first digit has the insertion of the extensor hallucis longus. The extensor digitorum longus and the b. extensor hallucis longus has the same function, the extension of the toes, the extensor hallucis longus only extends the first digit, and the extensor digitorum longus extends the other four digits simultaneously.
The second extra option, the medial epicondyle, is in the femur. It is a prominence in the distal part of this bone. The tibial collateral ligament and the Magnus muscle insert in this part of the femur.
period between two periods of mitosis
Answer:
The period between mitosis divisions - that is , G1 , S and G2 - is known as interphase....canicas y piedras son homogéneas o heterogéneas
por
favor
es
para
oy
ayúdenme
Answer:
Heterogéneas.
Explanation:
Se denomina "heterogénea" a toda aquella cosa que, por sus características particulares, no puede ser asimilada a otras sino que posee una individualidad particular que impide dicha asimilación. Así, por ejemplo, una piedra y una canica son heterogéneas entre sí, en tanto no poseen las mismas características y por lo tanto son claramente diferenciables.
What is the average for the following set of measurements?
3.1 ml, 2.7 mL, 4.6 mL, 1.9 mL, 8.7 ml?
Answer:
The average is 4.2
Explanation:
WILL GIVE BRAINLIST TO CORRECT ANSWER
Two of the three points of the cell theory are listed below.
• All new cells come from preexisting ones.
• Cells are the basic units of life.
Which of the following is the third point of the cell theory?
O A. All living cells are surrounded by a rigid cell wall.
O B. All living things have many cells.
O C. All living cells have a nucleus.
D. All living things are made of at least one cell.
Answer:
All living things have a nucleus.
Explanation:
Answer:
All living things have a nucleus.
Explanation:
Ape-x
A genetic trait might be caused by incomplete dominance if:
A. red-, white-, and pink-flowered plants grow from the seeds of a
blue-flowered plant.
B. pinks, white, and red-flowered plants grow from the seeds of a
pink-flowered plant.
C. two plants with red flowers are the parents of plants with either
red flowers or white flowers.
O D. two plants with red-and-white flowers are the parents of plants
with either white flowers or pink flowers.
how does the kidney help with excretion
Answer:
kidneys filter about a half cup of blood every minute, removing wastes and extra water to make urine
in a paragraph explain what effect very small pores and their diffusion rate would have on the workings and mechanism of a cell
Answer:
So if the size of the pore is small then the rate of the diffusion will be very slow as the molecules will move from high concentration to low concentration in very slow rate.
Explanation:
I hope it helps you
Scientists have observed many close similarities in the DNA sequences of whales and dolphins. This observation is evidence of which idea?
Dolphins, porpoises, and whales all are in the group of marine animals known as cetaceans. Scientists saw many close similarities in the DNA sequences of whales and dolphins. This observation is proof of whales and dolphins both evolved from a relatively recent common ancestor.
What is cetaceans?Cetacean are members of an aquatic group of mammals commonly known as whales, dolphins, and porpoises.
The ancient Greeks stated that cetaceans can breathe air, give birth to live young, produce milk, and have hair. These are all features of mammals.
As the scientist observed the close similarities in the DNA sequences of both the whales and the dolphins. This shows the proof that whales and dolphins both evolved from a relatively recent common ancestor.
Thus, this is the evidence to reveal the reason behind the similarities in DNA sequences in whale and dolphin.
For more details regarding cetaceans, visit:
https://brainly.com/question/13869302
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According to Lamarck, the
characteristics of organisms changed
because of:
A. extinction of competitors
B. a desire or need for that trait
C. special acts of creation
D. genetic mutation
E. chance
Answer:
Maybe..........B?.............
Explanation:
Lactobacillus in yogurt, some Escherichia coli in the intestines of humans and animals, and Rhizobium that fixes atmosphere nitrogen are all considered beneficial bacteria. Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a True b False
Answer: a. True.
Explanation:
Lactobacillus is a genus of gram-positive, facultative or microaerophilic bacteria that produce lactic acid. They are normally found in different parts of the body such as the mouth, digestive tract and vagina. Lactobacilli usually do not cause disease, although they can cause dental caries. Some lactobacilli have a homofermentative metabolism, that is, they produce lactic acid from sugars, which makes their environment acidic and inhibits the growth of pathogenic bacteria. Some species of Lactobacillus are used in the industry for the production of yogurt, cheese and other fermented foods.
Escherichia coli is a bacterium that is part of the microbiota of the gastrointestinal tract of various animals. It is a gram-negative bacillus, facultative anaerobe, and the most abundant commensal of the microbiota of the gastrointestinal tract where, together with other microorganisms, it is essential for the correct functioning of the digestive process. It also participates in the production of B and K vitamins.
Rhizobium is a genus of gram-negative soil bacteria that fix atmospheric nitrogen and live in symbiosis with certain plants (such as leguminous plants) in their roots, after a process of infection induced by the plant itself through the secretion of lectin, to which they provide the nitrogen necessary for the plant to live and which in return gives it shelter. Fixation is the combination of molecular nitrogen (N2) with hydrogen or oxygen to give ammonium or oxides that are incorporated into the biosphere. Molecular nitrogen, which is the major component of the atmosphere, is inert and not directly usable by most living things. Therefore, it involves the incorporation of a significant amount of nitrogen into the biosphere.
Therefore, all three are considered beneficial.
Examine the mechanism of carbonic anhydrase. If the Zn2 were removed from the active site, and replaced with either Cu , Cd2 , or Fe3 would you expect the enzyme to still be functional
Answer: No
Explanation:
Carbonic anhydrase (CA; carbonate hydro-lyase) is a zinc-containing enzyme that catalyzes the reversible hydration of carbon dioxide: CO2+ H2O<-->HCO3(-)+H+. The enzyme is the target for drugs, such as acetazolamide, methazolamide, and dichlorphenamide, for the treatment of glaucoma.
The zinc ion is located in a cone-shaped cavity and coordinated to three histidyl residues and a solvent molecule. Inhibitors bind at or near the metal center guided by a hydrogen-bonded system comprising Glu-106 and Thr-199. The catalytic mechanism of CA II has been studied in particular detail. It involves an attack of zinc-bound OH- on a CO2 molecule loosely bound in a hydrophobic pocket. The resulting zinc-coordinated HCO3- ion is displaced from the metal ion by H2O. The rate-limiting step is an intramolecular proton transfer from the zinc-bound water molecule to His-64, which serves as a proton shuttle between the metal center and buffer molecules in the reaction medium.
Give three reasons why you might have a situation in which bacterial colonies were found on the first section of a streak plate, but not on sections two and three.
Hi. You have not shown the sections this question refers to, nor have you provided more information about those sections. This makes it difficult for your question to be answered. However, I will try to help you as best I can.
Generally speaking, we can consider that there was no growth of bacterial colonies in sections 2 and 3, because, for some reason, the bacteria was not inoculated in sections 2 and 3. What could also have happened, is that the bacteria in the sections 2 and 3 were eliminated, but the bacteria from section 1 managed to survive and form colonies.
Another possibility is that after inoculating the bacteria in section 1, you didn't handle the bacteria correctly in the other sections, leaving that bacteria to dry out and die.
Finally, the culture media in sections 2 and 3 could be inappropriate for bacteria to develop and form colonies.
Label each example below as one of the following types of energy: chemical, thermal, sound, electrical, gravitational, nuclear, radiant, or mechanical.
(40 pts + brainliest)
Answer:
Explanation:
lighting strike:sound
stretched rubber band:mechanical
battery: electrical
nucleus of an atom: chemical
light: radiant
phone:sound
20 POINTS PLEASE HELP
figure it out
Explanation:
ye Cuz I no do work for u
Two normal parents produce a child affected with the autosomal recessive disease homocysteinuria. They want to have 3 more children. You tell them the chance of 1 OR MORE affected among the next three children is:
Answer:
Zero
Explanation:
Because in a situation whereby both parents are carriers of an autosomal recessive condition there is a 1 in 4 chance of them having an affected child.
Hence, given that these two normal parents have already had one affected child with the autosomal recessive disease homocystinuria. There is ZERO chance of having an affected child in the next three kids they will be having.
question below. This classwork assignment should be submitted no later than tomo
How have genetics and heredity contributed to biodiversity on Earth?
1
In a cell undergoing meiosis, during which stage do the sister chromatids separate from each other?
anaphase l
anaphase ll
telophase l
telophase ll
Answer:
anaphase ll
Explanation:
anaphase ll
BRAINILIEST PLEASE
The compression sleeve would increase the interstitial fluid hydrostatic pressure and would decrease the amount of fluid leaking from the capillaries in the right arm.
a. True
b. False
The Nutrition Facts panel provides valuable nutrition information such as serving sizes, nutrient quantities, and Daily Values to assist individuals in making informed food choices. Use the Nutrition Facts panel from a container of cereal below to answer the following questions. Based on one serving, how many grams of total sugar do not come from an added sugar source?
Answer:
The right answer is "3 grams".
Explanation:
Yet another portion doesn't supply about 3 g of sugar from such an increased proportion.
That would be the reason why sugar has been biologically active throughout the cereal's static environment.All cereals that are given above 6 g of sugar for each serving are determined to be harmful as well as reacted by either a cereal that has very little sugar.who is the fathers of plants cell
Answer:
explain? are you looking for the male parts of a cell
Soil nutrients are important to photosynthesis because they _____.
help open and close stomata to retain water
increase the absorption of carbon dioxide
help with chlorophyll formation
Answer:
are the plants food
Explanation:
the nutrients is the energy for the plant, they give the plant energy.
