Answer:
Prophase
Explanation:
There are different stages in the eukaryotic cell cycle. Different cellular occurrences are found in each of this stages. The stages include; prophase, metaphase, anaphase, telophase etc.
Prophase, which is the first division stage, is characterized by the dissociation of the nuclear membrane, tightening of DNA coils called chromatin by condensin proteins (condensation) to form X shaped visible chromosomes.
Which of the following statements about the Green Revolution is true?
A. The Green Revolution increased the biodiversity of crops grown around the world.
B. The Green Revolution bettered the environment by encouraging less fertilizer and
pesticide use.
C. The Green Revolution allowed countries that previously imported crops to become
crop exporters.
D. The Green Revolution was applied in the Americas but didn't have a global
impact.
The Green Revolution allowed countries that previously imported crops to become
crop exporters.
What is the Green Revolution?The Green revolution refers to the period of cultivation of high-yielding crops varieties especially grains by farmers beginning in the period of the 1940s to l960s.
The Green revolution resulted in increased food production among countries that usually imported food, so they became exporters.
Therefore, the Green Revolution allowed countries that previously imported crops to become
crop exporters.
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what is the function of red blood cells in the circulatory system
Answer:
Red blood cells carry oxygen from our lungs to the rest of our bodies.
Explanation:
The function of the red cell and its hemoglobin is to carry oxygen from the lungs or gills to all the body tissues and to carry carbon dioxide, a waste product of metabolism, to the lungs, where it's removed from the body. In invertebrates, oxygen-carrying pigment is carried free in the plasma; its concentration in red cells in vertebrates, so that oxygen and carbon dioxide are exchanged as gases, is more efficient and represents an important evolutionary development. The mammalian red cell is further adapted by lacking a nucleus—the amount of oxygen required by the cell for its own metabolism is thus very low, and most oxygen carried can be freed into the tissues.
Explain How a chloroplast helps a cell get the meterials it needs
Answer:
chloroplasts work to convert light energy of the sun into sugars that can be used by cells. Its like a solar panel that changes sunlight energy into electric energy. The entire process is called photosynthesis and it all depends on the little green chlorophyll molecules in each chloroplast.
Question 7 of 10
A cell membrane is very specific about what it allows across. How does this
help the cell?
O A. Transport proteins allow only enzymes to pass through the
membrane.
O B. It is better for the cell if most molecules are prevented from
entering.
O C. The cell works better when it contains fewer proteins.
D. It helps the cell absorb as many different molecules as possible.
Answer:
The answer is D
Explanation:
As the cell is mostly dependant on ingested materials so this will help the cell to grow and perform other important activities in the cell
The Pasteur effect shows that yeast consume glucose at a higher rate under anaerobic conditions than under aerobic conditions. Which of the following statements correctly explains this observation?
A. Less ATP is made under anaerobic conditions, so more glucose must be consumed to produce an equivalent amount of ATP.
B. Yeast are photosynthetic, so they are able to produce their own oxygen.
C. This observation is incorrect.
D. Aerobic conditions mean that cells make more ATP and use more glucose.
E. Yeast are obligate anaerobes, so aerobic conditions will kill yeasts.
Help me please picture included
Answer:
umm I'm sorry but the picture is not coming like I mn its blank
The "homunculus" constructed on the basis of somatosensory representations in the human primary somatosensory cortex
Answer:
The correct answer is -
a. has a grossly enlarged face and hands compared to torso and limbs
c. is distorted because of the disproportionate representation of certain body parts relative to others in the somatosensory cortex
Explanation:
" Homunculus" is a graphical representation of a small but fully grown man which the foetus is believed to develop whereas somatosensory homunculus is a neurological representation of the brain of humans that shows the motor and sensory functions of the body.
It has a large number of sensory nerves from the hand that take a large part of the brain. The face also has many nerve endings and are represented by large areas of the homunculus. A distorted look comes from this uneven representation of different body parts in the homunculus.
Do leaves have other than. Green colour also have chlorophyll
Yes, leaves that are of any other colors than green also have chlorophyll. The green colour of chlorophyll is just hidden beneath other pigments of the leaf.
Are there possible risks/harms that the genetic engineering process can cause to the public? How could this be prevented/minimized? How would humans benefit from this process?
Answer:
Harms: May cause nasty diseases and all sorts of bad things if not engineered properly.
We would benefit by basically being where we are now. We used a lot of genetic engineering to get our technology to the point it is now.
Explanation: Kind of hard to turn back from genetic engineering as it is a potentially useful process.
1. An inherited characteristic that allows
anorganism to better survive is called
a(n)-
Answer:
adaption
Explanation:
1. Study the picture of the cockroach to the
right and identify some characteristics that think
you could use to describe a cockroach
Do not answer if you don’t know I will report your “answer”
Answer and Explanation:
A few characteristics shared by all cockroach species might be useful to identify them.
Their body shape is flattened, wide and oval. Pronotum: There is a big plaque joined to the thorax, composed of three segments. The first segment covers and protects the small head.Head: Small heads carrying two typical long, thin, and flexible antennae used to sense the environment. They also have two big composed ocellus or eyes. The oral structures are adapted to bite, chew, and absorb. Abdomen: The abdomen is composed of 10 segments. Exoskeleton: Their whole body is covered by a hard, resistant exoskeleton, covered with a cerous substance. Receptors: They have many thermal, tactile, and gustatory receptors to sense the environment. Wings: Two pairs of wings. The tegmens are the hard front pair that protects the body and the second pair of wings. The second pair is membranous and used to fly. Legs: Three pairs of robust legs joined to the thoracic segments. The last pair of legs are much longer than the others. All of them have ornaments that look like spines, and might have a sensory function and help the insect to displace through different fields.Why are genetically engineered mammalian cells sometimes needed to produce certain proteins instead of genetically engineered bacteria?
A. Mammal cells are larger and can produce greater volumes of protein.
B. Mammalian cells are not needed; bacterial cells can produce the same proteins as long as they have the gene that codes for it.
C. Mammal cells have more precise restriction enzymes.
D. Bacteria make proteins differently than mammals, and cannot make certain human proteins.
Answer:
C
Explanation:
As mammal cells have more precise restriction enzymes, it sometimes needed instead of bacteria. The correct option is C.
What is genetic engineering?Genetic engineering also referred to as genetic modification is a process that uses laboratory-based technologies to alter an organism's DNA makeup.
Because mammalian cells have more precise restriction enzymes, it is sometimes necessary to use them instead of bacteria.
Herbert Boyer and Stanley Cohen, biochemists, create genetic engineering in 1973 by implanting DNA from one bacteria into yet another.
There are three basic stepping stones to genetic engineering. These are:
Isolating DNA fragments from a donor organism.Inserting an isolated donor DNA fragment into a vector genome.Growing a recombinant vector in an appropriate host.Thus, the correct option is C.
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How does random mating keep a
population in Hardy-Weinberg
Equilibrium?
A. Choosing a random mate creates variation which helps
the population evolve.
B. Individuals choose their mates causing only certain
traits to be passed on.
C. Mates aren't chosen based on traits so all alleles are
equally likely to be passed on.
D. When all the females of a population randomly choose a
mate and only certain alleles get passed on.
Answer:
A
explanation:
An ecologist studied the same species of deer during the summer and the winter. She noticed that during the summer, when there was plenty of food, the deer were energetic and playful. However, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator.
Which scientific fact is best supported by her observations?
A.
Some deer species will eat the bark of trees.
B.
Food is the fuel that gives animals energy.
C.
Food provides building materials that animals use to grow.
D.
Carnivores eat primarily the meat of other animals.
What two distinct features do sound waves have?
Amplitude and frequency
Frequency and decibels
Volume and amplitude
Volume and decibels
Frequency and volume
Answer:
amplitude and frequency
What is the dental formula of a cow
What will be the impact on productivity of plant if CO2 reduction stops during photosynthesis?
Answer:
As carbon dioxide concentrations increase, the pores don't open as wide, resulting in lower levels of transpiration by plants and thus increased water-use efficiency.
Explanation:
what is G1 phase in cell?
Answer:
The g₁ phase, gap 1 phase, or growth 1 phase, is the first of four phases of the cell cycle that takes place in eukaryotic cell division. In this part of interphase, the cell synthesizes mRNA and proteins in preparation for subsequent steps leading to mitosis.
Which of the following is an example of a
homologous trait?
A. the wings of bees and birds
B. the forearm of different animals
C. the DNA of land animals
Answer:
the wings on bees and birds
An example of a homologous trait is the wings of bees and birds. The correct option is A.
What are homologous traits?The Theory of Evolution can be used to explain the homologous features of related species. According to this hypothesis, species develop over time from a common progenitor.
In order to adapt to the new environment, species separated from one another and developed new features. The variety of species observed on Earth today is the result of a process known as speciation.
The homologous features that are shared by related species are proof of their shared ancestry. For instance, despite being different, the wings of a bat and a bird share characteristics.
Therefore, the correct option is A. the wings of bees and birds.
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What sources must health care workers use when deciding which abbreviations and symbols to use on the job?
a. Those listed in their textbooks
b. Those approved by the facility in which they work
c. Those listed in medical dictionaries and reference books,
d. Those provided by their professional organization.
What is the best definition for the term 'peer review?'
o
A. When you are given of review of how well you work by your coworkers.
B. When research is scrutinized and re-tested by others who are experts in the same area.
C. When people of the same age read each other's work.
D. When research is published to the general public for them to form opinions on it.
Reset Selection
Classify these hypotheses about the ocean as falsifiable or non-falsifiable.
The hypotheses about the ocean as
Falsifiable: 1) Limestone erodes faster than basalt when exposed to ocean salt water 2) Shallower tide pools support more algae growth.
Non-falsifiable is: 1) The rugged Panama coastline offers a wonderful experience for fishing enthusiasts. 2) Warm ocean water is more enjoyable to swim in than cool ocean water.
Limestone erodes faster than basalt when exposed to ocean salt water.
This hypothesis is falsifiable. One could conduct an experiment in which samples of limestone and basalt are exposed to ocean salt water and the rate of erosion is measured and compared between the two samples.
The rugged Panama coastline offers a wonderful experience for fishing enthusiasts.
This hypothesis is non-falsifiable. The statement is subjective and cannot be tested or proven true or false. What one person considers a wonderful fishing experience may not be the same for another person.
Shallower tide pools support more algae growth.
This hypothesis is falsifiable. One could conduct an experiment in which algae growth is measured and compared between different depths of tide pools.
Warm ocean water is more enjoyable to swim in than cool ocean water.
This hypothesis is non-falsifiable. The statement is subjective and cannot be tested or proven true or false. What one person finds enjoyable may not be the same for another person.
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What can a line graph be used to do? Select the best answer.
A. Identify positive correlation
B. Make comparisons
C. Identify negative correlation
D. Make predictions
The sticky mass in some chemicals on heating was known as _______________________ fibre or fibre _________.
Answer:
Americans chemical society
Write down the functions of
1.microtubules
2.tripletsof microtubules
Answer:
Microtubules are filamentous intracellular structures that are responsible for various kinds of movements in all eukaryotic cells. Microtubules are involved in nucleic and cell division, organization of intracellular structure, and intracellular transport, as well as ciliary and flagellar motility
Centrioles are cylindrical structures that are made up of protein tubes called microtubules. Specifically, nine groups of three microtubules, known as triplet microtubules, are linked together to make the walls of the cylinder.
Hope it helps :)
Answer:
Microtubules have several functions. For example, they provide the rigid, organized components of the cytoskeleton that give shape to many cells, and they are major components of cilia and flagella (cellular locomotory projections). They participate in the formation of the spindle during cell division (mitosis).
triplet microtubules are linked together to make the walls of the cylinder.
Explanation:
make a molecule between 87Fr^+ and 6C^-4
Answer:
gdshmsdh b
hhfdycjmncd
Explanation:
csbnmbvdfhdfg
. Q.. List any two advantages associated with water stored in the ground.
Answer:
It does not evaporate.
It recharges wells near the area.
It provides moisture to the vegetation.
It does not provide breeding grounds for mosquitos , like stagnant water in lakes and ponds.
It is relatively protected from contamination by animal and human waste.
Explanation:
IN YOUR OWN WORDS, what is the definition for Zygote?
Answer:
Zygote, fertilized egg cell that results from the union of a female gamete (egg, or ovum) with a male gamete (sperm). In the embryonic development of humans and other animals, the zygote stage is brief and is followed by cleavage, when the single cell becomes subdivided into smaller cells.
. Most of the matter in the universe: A. Exists within stars B. Is made when planets are formed C. Is unknown, called dark matter and energy D. Is blue-shifted
Answer:
B
Explanation:
is made when planet are formed
which water based animals have a mechanism to prevent water from diffusing into their bodies
Answer:
Osmoconformers are marine animals which, in contrast to osmoregulators, maintain the osmolarity of their body fluids such that it is always equal to the surrounding seawater. Osmoconformers decrease the net flux of water into or out of their bodies from diffusion.
Explanation:
