Answer:
50 visible chromosomes and replicated.
Explanation:
Diploid number 50Haploid number 25When we talk about the cell cycle, we refer to the interphase and the cell division (mitosis or meiosis).
Interphase is composed of stages G1, S, and G2. During the S stage, the DNI replication process occurs. This is the only stage in which the DNI molecule replicates. The synthesis of histones and other associated proteins also occurs.
Meiosis occurs after the interphase is over.
Meiosis produces four daughter haploid cells (n) from a diploid germ cell (2n). Each daughter cell is haploid because they have half the number of chromosomes of the original one.
At the beginning of prophase 1, DNI is condensed in a well-defined chromosome formed by two sister chromatids joined by a centromere. Each chromosome carefully pairs with its homologous chromosome. Homologous chromosomes aline together to make the crossing-over possible, the stage where they interchange their parts.
The whole set of chromosomes is present in prophase 1. The reduction occurs later.
So if the germ cell has 50 chromosomes, the same 50 will be visible during prophase 1. DNA has already been replicated during the S stage of interphase.
Complete each sentence with the correct word or phrase
a. An action potential reaches the axon terminal causing __________to open.
b. Acetylcholine diffuses across the synaptic cleft before binding to its receptor, which is located on the _____
c. When the membrane potential reaches ________an action potential spreads across the sarcolemma due to the opening of ___________
d. In response to acetylcholine binding, ________ move into the muscle fiber causing the membrane potential to rise.
Answer:
a). Voltage-gated Ca2+ channels
b). the motor end plate
c). Threshold, voltage-gated Na channels
d). sodium ions
Explanation:
a). The voltage-gated [tex]Ca^{2+}[/tex] channels are the key transducers of the membrane potential that changes into a intracellular [tex]Ca^{2+}[/tex] transients which initiates the physiological events. When the action potential makes a contact with axon terminal, the voltage-gated [tex]Ca^{2+}[/tex] channels opens.
b). The acetylcholine is the main neurotransmitter of the parasympathetic nervous system. It helps in blood vessels dilation, muscle contraction, and perform many more functions.
It diffuses with the synaptic cleft that is located on the motor end plate of the nervous system.
c). The membrane potential is also known as the membrane voltage or the transmembrane potential. When it recaches the threshold, the voltage-gated Na channels opens to spread the action potential across sarcolemma.
d). The sodium ions in case of acetylcholine binding moves to the muscle fiber due to which the membrane potential rises.
Reactants definition
In a Nitrogen metabolism study, the following data were obtained over the test period:
Nitrogen consumed 175 grams
Total Fecal N 35 grams
Metabolic Fecal N 10 grams
Total Urinary N 80 grams
Endogenous Urinary N 10 grams
Calculate:
a. Apparent Nitrogen digestibility (%)
b. True Nitrogen digestibility (%)
c. Nitrogen Balance (g)
d. Apparent Nitrogen Retention (%)
Answer:
a. 80%
b. 86%
c. 60 g
d. 34.29%
Explanation:
From the given information:
The apparent nitrogen digestibility (AD) is the ratio of the difference between the consumed nitrogen and fecal nitrogen to the consumed nitrogen.
Mathematically:
[tex]AD = \dfrac{consumed \ nitrogen - fecal \ nitrogen }{consumed \ nitrogen }[/tex]
[tex]AD = \dfrac{175 -35 }{175}[/tex]
AD = 0.8
To percentage, the apparent Nitrogen digestibility = 80%
b. True Nitrogen digestibility is calculated by the formula:
[tex]=\dfrac{consumed \ nitrogen - (fecal \ nitrogen -metabolic \ fecal)}{consumed \ nitrogen}[/tex]
[tex]= \dfrac{175 -(35-10)}{175}[/tex]
[tex]= \dfrac{175 -25}{175}[/tex]
= 0.86
= 86%
c. Nitrogen Balance = consumed Nitrogen - Fecal nitrogen - total uninary
Nitrogen Balance = (175 - 35 - 80) grams
Nitrogen Balance = 60 g
d. Apparent Nitrogen Retention (ANR) is computed as follows:
[tex]ANR = \dfrac{(consumed \ nitrogen-fecal\ nitrogen - total \ uninary )}{nitrogen \consumed }\times 100\%[/tex]
[tex]ANR = \dfrac{(175-35- 80 )}{175 }\times 100\%[/tex]
[tex]ANR = \dfrac{(60 )}{175 }\times 100\%[/tex]
ANR = 34.29%
Your bicycle has the mass of 9 Kg , you accelerate at the rate of 2 m/s2 . calculate the net force that is accelerating the bicycle. ( use the formula a= F/m) please this is urgent
Answer:
18kgm/s2
Explanation:
a=f/m
f=a.m
2m/s2 . 9kg
18kgm/s2
Assignment: 04.02 The Biosphere
In this lesson, you took a tour of three of our unique aquatic biomes. In this assessment, you will take a virtual field trip to any aquatic ecosystem of your choice and learn about the biotic and abiotic factors that shape it.
A virtual field trip is a Web search of a location you are unable to visit in person. For this virtual trip, pick any sea, lake, bay, or river in the world and research the biotic and abiotic factors that make it unique. Include the following features in your virtual field trip research:
1. the location of your body of water
2. a description of the geography surrounding your body of water
3. the effects of sunlight on the aquatic life inhabiting your body of water
4. the depths and salinity of your body of water and how this shapes the types of aquatic life present
5. the effects of seasonal changes to water temperatures and aquatic life in your body of water
6. predictions or current research on the effects of climate change to your body of water
Once, you’ve gathered your research, share your virtual field trip with us. Include pictures of your aquatic ecosystem and the life within it in your presentation, but make sure to cite the sources of your pictures and research. Please review the student example and rubric for this virtual field trip before continuing.
You may share your field trip in any creative format you would like. Here are a few suggestions:
- video or media presentation
- slide show
- Web page
- illustration that includes research notes If you need would like an assessment outline
a. Why was it important in this case to identify Salmonella Typhi in the feces of the restaurant worker?
Answer:
Some other types of Salmonella cause typhoid fever or ... Most people with Salmonella infection have diarrhea, fever, and ..
Explanation:
Add as brainlist
Prepare a collage of tools and equipment used in production of any one agricultural crop, from seed or planting through packaging of the produce
Answer:
i think
Explanation:
Answer true or false.
1._____The central nervous system consists of the brain, spinal cord, and nerves.
2._____The autonomic system is part of the nervous system that controls involuntary
actions in the body.
3._____A fish has a more highly developed brain than an ape.
4.______The spinal cord is part of the respiratory system.
5._____The three main parts of the brain in vertebrates are the cerebrum, the
cerebellum, and the brain stem.
Answer:
1. False
2. -----
3. False
4. False
5. True
I'm not sure of the 2nd question
Hope it helps:)
What is seed technology?why is still considered as one of the major subject in agriculture?
Consider the factors that affect muscular strength. Read each scenario and then identify each label into the appropriate category based on whether each would result in a stronger or weaker muscle contraction.
a. Potassium accumulate in the sarcoplasm
b. Increase in muscle belly circumference
c. Lesser proportion of motor neurons to muscle fibres
d. Begin contractions with muscle already 50% contraction
e. Lower sarcoplasm pH
f. Increased stimulus frequency.
g. Circular arrangement of muscle fascicles
h. increased requirement.
Answer:
1. Weaker contraction:
a. Potassium accumulate in the sarcoplasm
d. Begin contractions with muscle already 50% contraction
e. Lower sarcoplasm pH
g. Circular arrangement of muscle fascicles
2. Stronger Contraction
b. Increase in muscle belly circumference
c. Lesser proportion of motor neurons to muscle fibres
f. Increased stimulus frequency.
h. increased requirement.
Explanation:
Sarcoplasm refers to the cytoplasm of muscle cells which contains ATP, enzymes, and a variety of ions, including potassium (K+). The negative potential required during muscle activity is produced from the disequilibrium of ionic concentrations (mostly Na+ and K+) across the membrane, which is generated through Na+/K+ ATPase pumps. During contraction, a muscle shortens, and thus its circumference increases. The generation of lactic acid is known to lower pH in the sarcoplasm and thus hinder the force and power development of the muscle fibers. Muscle fascicles can be arranged in concentric rings, it is a common pattern in sphincter muscles that modulate the opening and closing of orifices (which have weak contractions). A motor unit refers to a single efferent neuron and all of the muscle fibers it modulates. Each individual muscle fiber is innervated by one motor neuron, whereas a single motor neuron can innervate many muscle fibers. Finally, higher intensity/frequency are known to induce stronger muscular contractions, but also produce a stronger decline in force and cause more rapid muscle fatigue.
a) Identify where exocytosis begins in this pathway.
How is the protein transported out of the cell?
Answer:
Protein cargo moves from the ER to the Golgi, is modified within the Golgi, and is then sent to various destinations in the cell, including the lysosomes and the cell surface. The Golgi processes proteins made by the endoplasmic reticulum (ER) before sending them out to the cell.
explanation:
correct me if I'm wrong (◍•ᴗ•◍)
Which statement accurately identifies the order of tissues pictures left to right in the microscopic image?
a) Epithelial cells, smooth muscle, connective tissue
b) Connective tissue, epithelial cells, smooth muscle
c) Epithelial cells, connective tissue, smooth muscle
d) Connective tissue, smooth muscle, epithelial cells
Answer:
The correct answer is - d) Connective tissue, smooth muscle, epithelial cells.
Explanation:
The connective tissues are the tissue layers that protect the outside of arteries and veins. The thick outermost layer of a tunica adventitia and other, made of connective tissues.
The middle layer that has tunica media that s made up of outer connective and smooth muscles in the inner or middle and in the innermost layer is made up of epithelial layer.
As per the image given the statements that describe the tissues from the left to right in a microscopic image are connective tissue, smooth muscles, and epithelial cells.
The connective tissues support and protect and give stricture. The smooth muscles are involuntary non straighter muscles. The epithecal cells that line the surface of the body.Hence the option D is correct.
Learn more about the statement accurately identifies.
brainly.com/question/23999747.
number of cell that undergo meiotic division to produce a 216 gametes in gymnosperms is
meiotic devision this is the answer it might help you
Z 00m 336"083"2553 (wZE2XQ)
Check all statements you agree with regarding the
purpose section of Proposal A.
This project will do a good job revealing the
effect of pesticides on honeybees.
It will help to establish a baseline for historical
comparison, a long-term benefit.
Society will benefit because the project will
indirectly increase the supply of honey and
other agricultural production.
The honey and agricultural industries will
benefit because bees will face fewer threats
Answer:
And will also reduce unemployment and also reduce morbidity
25 POINTS!! If you chemically synthesized the DNA molecule ATGCCGAATG from individual nucleotides, what would be present in solution besides the DNA?
A. phosphate
B. RNA
C. lipids
D. glucose
Answer:
option a
Explanation:
Why are temperatures hotter in locations near the equator?
Which statement explains the goal of using sustainable practices in food
production?
A. It feeds a growing population without harming ecosystems or
humans.
B. It feeds a shrinking human population while still preserving
ecosystems.
C. It keeps a few populations healthy while still generating high
profits
D. It keeps farmers in business by earning them the highest profits.
Answer: A. It feeds a growing population without harming ecosystems or humans.
Explanation:
Sustainable food production refers to the method of using processes that conserve non-renewable energy, non-polluting, economically efficient, and are also safe for everyone in the society. Also, the needs of the future generation isn't compromised.
The statement explains the goal of using sustainable practices in food
production is to feed a growing population without harming ecosystems or humans. Therefore, the correct option is A.
A pea plant is heterozygous for both seed shape and seed color. S is the allele for the dominant, spherical shape characteristic; s is the allele for the recessive, dented shape characteristic. Y is the allele for the dominant, yellow color characteristic; y is the allele for the recessive, green color characteristic. A pure bred plant with green spherical shaped seeds is crossed with a pure bred plant with yellow dented shaped seeds. State the phenotype and genotype for the parent plants p1 and p2
Answer:
The correct answer is -
P1: SSyy
p2: ssYY
Explanation:
In the given question it is given that S is the allele for the dominant trait of spherical shape over s allele of dented shape and similarly Yellow pea seed is dominant over y green seed.
It is given that parent 1 or p1 is true breeding for green spherical shaped seeds which means it has two alleles of the same gene that are SSyy (S for spherical and y for green) and parent 2 or p2 is a pure bred plant with yellow dented shaped seeds that would be ssYY.
Primary sensory afferent axons have widely varying diameters, and their size correlates with the type of receptor to which they are attached. Write down the axons that are the smallest and the slowest?
Answer:
Smaller and slower axons are those related to temperature, itching and pain.
Explanation:
As you may already know, the axon is an extension of the neuron that has the ability to transmit signals to cells, indicating the nerve impulse that must be felt by the body. In other words, the axons receive a synapse, which is the nerve impulse, and pass this message on to a nerve cell to turn it into a sensation. These axons have varying diameters and the speed at which they transmit messages also varies. According to researches, the smaller and slower axons are those related to the sensation of temperature, itching and pain.
How can a change to Earth's tilt affect Earth's climate?
Answer:
It makes seasons more extreme
Explanation:
How many kingdoms are there in the domain Bacteria?
O A2
OB. 1
O c. 3
O D. 4
Answer:
There is 1 kingdom in the domain Bacteria
Explanation:
Answer:
B. 1
Explanation:
one Kingdom
Domain Bacteria has one Kingdom: Kingdom Eubacteria.
How many kingdoms are there in the domain bacteria? | Study ...https://study.com › academy › answer › how-many-kingd...
Give any two examples for each. 1. Floating plants 2. Underwater plants 3. Fixed plants 4. Emergent plants 5. Insectivorous plants 6. Mangroves 7. Desert plants 8. Coniferous trees 9. Deciduous trees 10. Grass 11. Evergreen trees
Answer:
awdwdadadaawdadawdawdadad
Explanation:
awdawdawdadawdawdwaawdawdawdadawdawdwda
Hexokinase is an enzyme that catalyzes the ATP‑dependent phosphorylation of glucose to glucose‑6‑phosphate.
a. True
b. False
Answer: The statement is TRUE
Explanation:
HEXOKINASE is an enzyme that catalyzes the phosphorylation of glucose to glucose‑6‑phosphate in glycolysis. The main function of glucose is to provide energy for the tissues. The basic pathway through which energy is gotten from glucose is through GLYCOLYSIS. The glycolytic pathway is made up of enzyme catalyzed reactions that leads to the conversion of glucose to pyruvate in the presence of oxygen or lactate in the absence of oxygen.
The first step in glycolysis is catalyzed by HEXOKINASE, an enzyme with broad specificity that catalyzes the phosphorylation of six-carbon sugars. Hexokinase phosphorylates glucose using ATP as the source of the phosphate, producing glucose-6-phosphate, a more reactive form of glucose.
Therefore the above statement is TRUE.
1. Melting ice caps can result in _____.
A. a fall in sea level
B. colder temperatures
C. a rise in sea level
D. less precipitation
Answer:
C
Explanation:
if the ice caps melt it produces more water which leads to sea levels rising
Answer:
C. a rise in sea level
(depending on your stance more than one of these could be true but I'm assuming it wants the obvious one.)
What is a working copy of DNA and is read by organelles called?
Answer:
Working copy of DNA is RNA (Ribonucleic acid)
The nucleus controls all of the cell’s activities, such as growth and metabolism, using the DNA’s genetic information.
Answer:
messenger RNA (mRNA)
Explanation:
The working copy of the DNA is called messenger RNA (mRNA). Its ready by organelles such as ribosomes to manufacture amino acids to make proteins.
Explain the role of enzymes to living organisms
Explanation:
enzymes create chemical reaction in the body.But they actually speed up the rate of chemical reaction to help support life.. Enzymes is important to our body as it supports in building muscles and destroying toxins..
Which characteristic is unique to vertebrates?
A) they all have a well-defined skeleton
B) they have no defined organ systems
C) they have bilateral symmetry
D) they have an exoskeleton
Answer: They have well-defined skeleton.
Explanation:
This is because the vertebrates are uniquely characterised by the presence of the bones.
Answer:
Answer is A)They have a well-defined skeleton
Explanation:
most reasonable answer
Was there any significant difference in appearance between the two bean plants? if so, what was the difference?
Explanation:
the plant in the sunlight will receive green color due to chlorophyll and the plant in the dark will have yellow or white color due to the lack of chlorophyll
Dehydration synthesis leads to WICH formation
Answer:
Polymers...........
Explanation:
