Which type of cell does NOT contain a nucleus?
A. prokaryotic
B. eukaryotic
Answer:
A. Prokaryotic
Explanation:
The prokaryotic type cell lacks a nucleus and other organelles.
Answer:
A. the prokaryotic
they live for short period of time due to no nucleus
HELP IM REALLY NOT SMART SO PLEASE HAHA
Answer:
Should be C
Explanation:
Answer:
The answer is c
Explanation: Because a celestial thought to be a rapidly rotating neutron star that emits regular pulses of radio waves and other electromagnetic radiation at rates of up to one thousand pulses per second
if a badger has 23 chromosomes in it’s egg cell, how many chromosomes are in it’s muscle cell?
Answer:
46 in it muscles cell
Explanation:
You just need to remember the sex organ is half of the number of the other cell.
The following RNA strand was produced: 5 AUG GCG UUU 3 Which of the following DNA strands could have been the template for this RNA? Choose 1 answer: A 3 TAC CGC AAA 5' 3' CGT TAT GGG 5' 3' AUG GCG UUU 5' 3' UAC CGC AAA 5
Answer:
A
Explanation:
Each nucleotide is appropriately paired according to the A-U/T-A and C-G pairing rules, so these are complementary strands.
The DNA strand that could have been the template for RNA 5' AUG GCG UUU 3' is 3' TAC CGC AAA 5'.Thus, the correct option is A.
What is a Template strand?A template strand may be defined as the DNA sequence that can duplicate itself during the process of mRNA synthesis. During this process, the cell utilizes a non-coding/antisense DNA sequence as a template to construct mRNA.
The production of the mRNA strand is done with the help of complementary base pairing with that of the template strand. In this process, A is bound to T and vice versa, while C is bound to G and vice versa.
In mRNA, the Thymine (T) is replaced by Uracil (U). According to Chargaff's rule, the amount of ADENINE is equal to THYMINE, while the amount of GUANINE is equal to CYTOSINE.
Therefore, it is well described above.
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Which type of bond is the strongest?
A. lonic
O B. Covalent
C. Metallic
D. Hydrogen
Answer:
A
Explanation:
The two strongest bonds are ionic and covalent, but generally, ionic is viewed as the stronger bond because of the ion-ion force that occurs within the bond. It does depend on other factors though.
What kind of rock is found at the lowest level of the Grand Canyon?
Answer:
Elves Chasm gneiss
More than 1 billion years ago: The foundations are laid
Under extreme heat and pressure, their rocks transformed into the dark-colored “basement” rocks seen near the bottom of the canyon today — including 1.84-billion-year-old rocks called the Elves Chasm gneiss, the oldest known in the canyon.
hope this helps
have a good day :)
Explanation:
Carbon exists in many forms on Earth. What is happening in Step 1?
Answer:
You're right, the last option is correct
Explanation:
smart :D
Calculate the density of a mineral sample that has a mass of 12 grams and volume of 1.23 cm.
Answer:
[tex]density = \frac{12}{1.23} \: then \: d = 9.756097 \: \frac{g}{cm} [/tex]
What are 3 terms used to describe organisms such as humans?
how do we smell a gas
Answer:
you sniff it with ur nose
state four adaptations of the small intestine for effective absorption
During phagocytosis of one cell to another, the larger cell engulfs the smaller cell by enclosing it in a part of its plasma membrane which then pinches off so the cell is then within the larger cell. Given this may have been the process that brought bacterial cells into the ancestors of eukaryotic cells as endosymbionts, what structural characteristics might be expected in mitochondria and chloroplasts?
Explanation:
Phagocytosis is the process by which cells ingest large particles, including other cells, by enclosing the particles in an extension of the cell membrane and budding off a new vesicle. During pinocytosis, cells take in molecules such as water from the extracellular fluid.
Mitosis vs. Meiosis
Compare and contrast mitosis and
meiosis by answering the following
questions.
1. How many divisions are there in
mitosis?
2. How many divisions are there in
meiosis?
Answer:
the answer is
Explanation:
mitosis : one
meiosis : two
_______________ __________ is the exchange of genetic information between homologous pairs of chromosomes which accounts for genetic variation.
Explanation:
Chromosomal crossover, or crossing over, is the exchange of genetic material during sexual reproduction between two homologous chromosomes' non-sister chromatids that results in recombinant chromosomes. ... Crossing over is described, in theory, by Thomas Hunt Morgan.
Answer:
Chromosomal crossover, or crossing over
is the exchange of genetic information between homologous pairs of chromosomes which accounts for genetic variation.
hope it is helpful to you
Which does not show energy flow through the ecosystem
A Food Stream
B
Food Chain
С
D
Food Pyramid
Need help nowwww!! Anyone
Answer:
???????
Explanation:
TRUE OR FALSE EXPLAIN PLEASE!!
Which is NOT an example of evolution? A. The development of antibiotic-resistant bacteria B. Flightless birds living on islands without predators C. Annual changes in the flu virus due to mutations D. A dog learning how to open the cabinet where its food is kept E. The 2- to 3-year effectiveness of most commercial pesticides in killing insects
Which gas makes up the largest component of the Earth's atmosphere?
Answer:
The gas that makes up the largest component of Earth's atmosphere is Nitrogen.
write an open letter addressed to drivers and motorists. Make an appeal to them to follow speed limits and explain to them the comsequences.of not following such.
Based on the graph, the half-life of this radioactive isotope is
Answer:
3h
Explanation:
THE THEORY OF EVOLUTION BRINGS MEANING TO LIFE
Explanation:
Genetic evolution is the meaning of biologic life, in that it is the why and how of it, as well as the stock of future biological existence. The genes that survive -- and in turn the organisms they make -- are the winners in the existence game. ... We owe our existence to this process, and our future depends on it.
How does RNA polymerase know where to start and stop making a strand of RNA?
Answer:
Each gene has a beginning and an end. At the beginning of each gene is a similar sequence that tells the RNA polymerase to start working. The same is true at the end of each gene where a specific sequence tells the RNA polymerase to stop transcription
How did the CT enterography and the technetium scan lead to the correct diagnosis?
Answer: hope it helps..
Explanation: CT enterography is a new non-invasive imaging technique that offers superior small bowel visualisation compared with standard abdomino-pelvic CT, and provides complementary diagnostic information to capsule endoscopy and MRI enterography. CT enterography is well tolerated by patients and enables accurate, efficient assessment of pathology arising from the small bowel wall or surrounding organs. This article reviews the clinical role of CT enterography, and offers practical tips for optimising technique and accurate interpretation.
Where in the United states in the greatest risk of deserification?
Answer:
New Mexico, Texas and on the Navajo Indian reservation in New Mexico and Arizona
5 potential negative impacts on the environment
Explanation:
Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.
(please answer!!) Compare the human skin to and oak tree. the human skin is related to which part of the tree? is it:
A: bark
B: acorn
C:leaf
D:root
Calculate percentage change in mass for chip 5
Answer:
The correct answer is - 14.41%.
Explanation:
Given:
The initial mass of chip 5 -
end mass of chip 5 -
Percent Change in Mass = /
Formula used:
Mass Difference= Final Mass- Initial Mass
Percent Change in Mass = (Mass Difference/Initial Mass) *100
Solution:
Putting the value in the formula:
Mass Difference = 2.15 - 1.84
= 0.31
Percent Change in Mass = (0.31/2.15)*100
= 14.41
Thus, the correct answer is - 14.41.
Answer: -14.41 %
Explanation:
start of chip 5 the mass was 2.15 and towards the end mass of the beetroot chip it changed and the mass was 1.84 grams. the mass difference is 0.31 and i got this by doing 2.15 - 1.84 .
Choose two different types of cell and explain how they are adapted for the job they do in your body
Answer: Neurons, which transmits information, have dendrites and axons to transmit the signals. Cardiomyocytes, capable of spontaneous contraction due to the ramifications and tight junctions between cells.
Explanation:
Neuron: Principal component cell of the nervous system, which receives, processes and transmits information through electrical and chemical signals thanks to the electrical excitability of its plasma membrane. So they are specialized cells in the reception of stimuli and conduction of the nerve impulse, in the form of an action potential, between them through connections called synapses, or with other cell types such as, for example, the muscle fibers of the motor plate. So neurons have the ability to communicate accurately, rapidly, and over long distances with other cells, whether nerve, muscle, or glandular. Neurons have morphological characteristics that support their functions:
Dendrites: Short extensions consisting of cytoplasmic projections enveloped by a plasma membrane without a myelin sheath, that transmit impulses to the cell soma. The nerve impulse travels through the neuron, and when it reaches the dendrites, it jumps to the next neuron through the synapse (connection between cells), which occurs through the exchange of chemical substances called neurotransmitters. It also has many microtubules and few neurofilaments, both arranged in parallel bundles, many mitochondria, Nissl clumps (composed of free ribosomes attached to the rough reticulum) and smooth endoplasmic reticulum.Axons: Long extension surrounded by a membrane called axolemma, which conducts impulses from the soma to another neuron or target organ. Many axons are covered with a special insulating substance called myelin, which helps them to transmit nerve impulses quickly. Near its end, the axon divides into many branches and develops bulbous structures known as axon terminals. These axon terminals form connections with target cells.The cell bodies of some neurons from the Peripheral Nervous System (PNS), such as the motor neurons that control skeletal muscles, are located in the Central Nervous System (CNS). The axons from this motor neurons run from the CNS to the muscles they connect with. The cell bodies of other PNS neurons, such as sensory neurons that provide information, for example about touch or temperature, are located outside the CNS, where they are grouped in clusters known as ganglia. Axons of peripheral neurons that travel a common pathway bundle together and form nerves.
Neurons also consists of a central nucleus and a perikaryon that contains the typical organelles of an eukaryotic cell.
Cell nucleus: Contains one or two prominent nucleoli, and a dispersed chromatin, which indicates a high transcriptional activity.The nuclear envelope, with a multitude of nuclear pores, has a highly developed nuclear lamina. Perikarion : The most notable organelle, is the Nissl substance and such abundance in protein synthesis is due to the high biosynthetic rate. The Golgi apparatus is a highly developed system of flattened, small agranular vesicles and it is the region where the products of the Nissl substance enable further synthesis. There are also lysosomes and mitochondria , a cytoskeleton rich in microtubules and intermediate filaments.
Cardiomyocytes: Cardiac muscle cells that represents the contractile unit of the myocardiom, capable of spontaneous contraction since they show specialization in excitation and conduction of action potentials. The characteristic ramifications and tight junctions between these cells form a solid network of myocardial fibers, which determines the cardiac pump function and the cellular electrical conduction system that allows this pump to function. They are uninucleated cells with a large nucleus located in the center of the cell cytoplasm and they show transverse striations, with dark bands corresponding to the overlapping of actin and myosin filaments in their cytoskeleton, and with light bands corresponding only to actin filaments. Cardiomyocytes have morphological characteristics that support their functions:
Sarcoplasmic reticulum: Not well developed and distributed irregularly among the myofibrils, which appear distinctly separated.Mitochondria: Small and extremely numerous, packed and regularly distributed, dividing the cardiac cells into very obvious myofibrils. Cardiac muscle cells have very little glycogen and therefore cannot obtain much energy from glycolysis. This means that most of their energy comes from oxidative phosphorylation, with high oxygen consumption. Cytoplasm: Occupied by longitudinally arranged myofibrils with a striated pattern. Intercalary discs: Join cardiomyocytes, which appear as dark bands in histological preparations, and which are a set of junctional complexes where desmosomes and adherens junctions can be found. There are also cleavage junctions that allow contractile synchronization as they communicate cytoplasms of neighboring cells directly.Epidermic cells and red blood cells are two types of specialized cells. These mature cell types are developed by cell differentiation.
Cell differentiation refers to the differential gene expression that leads to the development of different types of cells which are specialized to perform specific functions.For example, hematopoietic stem cells express the hemoglobin gene to develop specialized red blood cells, which are specialized to transport oxygen to all cells of the body.Moreover, epidermic cells are specialized to provide mechanical strength and protection.In conclusion, epidermic cells and red blood cells are two types of specialized cells. These mature cell types are developed by cell differentiation.
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In the Stanford prison experiment:
*PSYCHOLOGY*
Answer:
the answer is D. The subjects were randomly assigned to be a prisoner or a guard
Explanation:
The subjects were randomly assigned to be a prisoner or guard, the other answer to this thread was wrong when I used it
Answer:
D. Subjects were randomly assigned to be a prisoner or a guard.
Explanation:
Brown eye color (B) is dominant to blue color (b). A blue-eyed woman wants to marry a man that will give her a
100% chance of having a brown eyed child. What must the genotype of the prospective husband be to produce
only brown eyed babies.
A-Both Bb and BB
B-bb
C-BB
D-Bb
Answer:
BB
Explanation:
All of their children will have brown eyes because brown eye color is dominant. All of their children will be heterozygous (Bb) for brown eyes.