Self-pollination takes place when the pollen from the same plant arrives at the stigma of a flower or at the ovule. There are two kinds of self-pollination, that is, autogamy and geitonogamy.
In autogamy, pollen is moved towards the stigma of the similar flower. While in geitonogamy, pollen is moved from the anther of one flower to the stigma of another flower on the similar flowering plant, or from microsporangium to ovule within a monoecious gymnosperm.
between which two letters does differentiation occur?
Differentiation occurs between two letters in the context of calculus. It refers to the process of finding a derivative, which represents the rate of change of a function with respect to a variable.
Bone with insufficient or abnormal collagen would _____ compared with healthy bone. (select all that apply.)
Answer:
Bone with insufficient collagen has a grater chance to get fractured compared to a healthy bone.
Explanation:
Collagen is one of the most abundant fibrous protein in human body. It is made by the connective tissue cells. It forms scaffold which provides strength to the bones. Its also present in skin, muscles ad tendons. Insufficient or abnormal collagen leads to Osteogenesis imperfecta. It is a condition where bones become brittle.
The range or area occupied by a population is called,
Which pathway would be used during a one minute, steep climb?
Answer:
Anaerobic Respiration
Explanation:
Just took the test.
Answer:
Anaerobic Respiration
Explanation:
got right on edge
Imagine that a strand of DNA has the following sequence of bases: AAGTTCGTCATC. What sequence of bases will the complementary strand of DNA have?
Plants respond to various sources of stimuli such as sunlight, water, and gravity. Plants in humid climates sometimes bend their roots toward a higher humidity. What is this response known as? A. geotropism B. gravitropism C. hydrotropism
Impermeable surfaces increase water runoff that may cause flooding.
a. true
b. false
This is an organ of the central nervous system, which has three distinct parts that control and coordinate the activities of the body. The cerebrum controls thoughts, voluntary actions, and the sensations related to the five senses. The cerebellum helps with balance and coordination. The stem controls vital and involuntary processes like breathing and your heart beating.
Answer: It's the Brain
Evolution theory is based on the supposition that energy plus matter plus natural chemical reactions are sufficient to ultimately produce functioning interrelated complex systems. True False
SOS:
The answer is TRUE!!!!
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Why is it important for action potentials to only be conducted in one direction? why is it important for action potentials to only be conducted in one direction?
a. the brief refractory period prevents reopening of voltage-gated na+ channels.
b. if the signal were transmitted in both directions, it would not be as efficient at transmitting information to the brain.
c. voltage-gated channels for both na+ and k+ open in only one direction.
d. the axon hillock has a higher membrane potential than the terminals of the axon?
Final answer:
Action potentials must be conducted in one direction to ensure efficient transmission of signals along neurons, enforced by the mechanism of the absolute refractory period that follows voltage-gated Na+ channel inactivation.
Explanation:
It is important for action potentials to only be conducted in one direction because once the voltage-gated Na+ channels open and Na+ enters the cell during depolarization, the channels become inactivated at the peak of depolarization and initiate a brief period called the absolute refractory period. During this time, the channels cannot reopen, preventing the depolarization from spreading back toward the previously opened channels.
Following depolarization, K+ channels open allowing potassium to exit the cell, facilitating repolarization. Along the axon, depolarization moves like a wave towards the axon terminals, unable to reverse direction due to the refractory period. If action potentials were able to travel in both directions, it would disrupt the signal transmission efficiency and the overall polarity of the neuronal signal.
"a lake is one example of local base level.
a. true
b. false"
What safety precautions should one take when using chlorinated solvents for extraction?
The correct answer is that the lab should be well ventilated, there should be no flames and wear gloves.
When using chlorinated solvents for extractions the precautions should take is that, the lab should be well ventilated, there should be no flames and a person should wear gloves.
Chlorinated solvent is a large family of chemical compounds that contains chlorine. Examples are trichloroethylene and carbon tetrachloride.
Chlorinated solvents are used for wide variety of industrial and commercial it includes decreasers, cleaning solution, pesticides, resins, glues and thinners.
Chlorinated solvents leaves the body through urination and exhalation.
It can lead to long-term or short-term.
What are the disadvantages of a flatworms digestive system having only one opening?
Psychologists are supposed to make the most ethical decision they can in any circumstance. Please select the best answer from the choices provided T F
The statement "Psychologists are supposed to make the most ethical decision they can in any circumstance." is true.
Who are psychologists?
Psychologist is a person who deal with problems related to the mind, thinking, emotional and social condition of a person. They are considered doctors of psychology.
They can understand the problem by hearing the problems of the patient, and they also prescribed medicine to calm them and given them emotional support.
The main part of their job is to collect information based on the behavior and interviews of the patient and also study the function of brain. They also suggest things to do to maintain the lifestyle.
Thus, the statement is true.
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In which if the following would the cell cycle be shortest
Adult brain cell
Embryonic cell
Teenagers kidney cell
Unfertilised egg cell
Which level of organization in the classification system is directly above the class level?
Domain
Family
Kingdom
Phylum
Answer:
Phylum
Explanation:
In the biological classification system, categories are used to group organisms according to their similarities. The basic category is species, which is defined as similar beings who are able to reproduce naturally and generate fertile descendants.
Animals of the same species are grouped into another category, the genus. All who belong to the same genre are grouped into families, which are grouped into orders, which in turn come together in classes, assembled in phyla, and finally we have the kingdoms. Kingdoms are therefore the last category in the hierarchy and subdivided into the most basic category. So we have:
Kingdom ⇒ Phylum ⇒ Class ⇒ Order ⇒ Family ⇒ Gender ⇒ Species
From this we can conclude that the level of organization in the classification system that is directly above the level of "class" is the "phylum".
Answer: Kingdom
Explanation: In this system of classification, kingdom is always ranked the highest followed by division, class, order, family, genus, and species.
and i got it right on my test
The American Psychological Association is the only organization that can approve psychological research studies. Please select the best answer from the choices provided T F
It is incorrect to state that the American Psychological Association is the sole agency that can endorse psychological research studies.
What is psychology?The scientific study of the behavior and mental processes is known as psychology. Psychologists work hard to learn about and fully comprehend mental states, brain structures, and behavior patterns.
Psychologists undertake basic and research activities, consult with groups and organizations, treat and diagnose patients, and educate future psychologists and those interested in other fields.
They assess intelligence as well as personality. Many psychologists work in the medical field.
Although the agency is one of the prestigious psychology associations in the United States, and it is an organization that reflects psychologists in the United States, it is not the only organization that approves psychology research."
Thus, the given statement is false.
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Benzodiazepines work best as a treatment for anxiety when __________.
a. the physician is perceived by the patient as being warm
b. the physician has a positive attitude toward antianxiety drugs
c. the physician believes that the patient will improve
d. all of the above
Which agent of erosion carried sediment that scratched bedrock
Which of these is a renewable building material?
A) Limestone
B) Granite
C) Wood
D) Steel
Answer: Wood
Explanation: The substances can be regrown or reused again after using it for the first time is known as renewable resources.
Here, the wood is obtained from the trees and trees can be considered as the source of renewable resources.
It can be grown again and again and woods from the trees can be used for various processes.
how long would it take the sound to get from the calling monkey to another monkey if the monkeys were 2 km apart?
Howler Monkeys
It would take less than 5.8 seconds for the sound to travel from the calling monkey to another monkey 2 kilometers apart, based on the speed of sound at sea level
kilometers apart, we can use the speed of sound in air. The speed of sound is approximately 343 meters per second at sea level and at 20°C (68°F). To find the time, we divide the distance by the speed of sound:
Time (seconds) = Distance (meters) / Speeof sound (meters/second)
Since 2 kilometers is 2000 meters, we have:
Time = 2000 meters / 343 meters/second
Time \< 5.8 seconds
Therefore, it would take less than 5.8 seconds for the calling monkey's roar to reach another monkey if they were 2 kilometers apart in conditions similar to sea level at 20°C.
meiosis is the process in which
What type of microscope is used to show the fine detail of cell organelles, as well as the spindle fibers and chromosomes as seen during anaphase?
A primigravida client with severe gestational hypertension is admitted to the labor unit. she has been receiving magnesium sulfate iv for 3 hours. the latest data reveals deep tendon reflexes (dtrs) of +1, blood pressure of 150/100 mm hg, a pulse of 92 beats/minute, a respiratory rate of 10 breaths/minute, and urine output of 20 ml/ hour. which action would be most appropriate?
Answer:
Stop the magnesium sulfate infusion.
Explanation:
The patient shown above shows magnesium sulfate toxicity so infusion of this element should be discontinued. In addition, magnesium sulfate should not be used in patients with the physical conditions shown in the above question such as poor and insufficient respiratory rate, urinary output and weak and minute reflexes.
Magnesium sulphate is indicated for replacement of magnesium levels in the treatment of hypomagnesemia, cerebral edema, eclampsia, seizure control in acute uremia, uterine tetany, control of cardiac arrhythmias and barium poisoning, but should be discontinued when patient shows signs of toxicity or exhibits the symptoms shown above.
true or false eukaryotes are much smaller than prokaryotes
what system allows the fungus to break down it's food
which of the cell's organelles releases energy stored in food?
A.mitochondria
B.chloroplasts
C.lysosomes
D.endoplasmic reticulum
Mitochondria releases energy stored in food. Correct option is A.
Mitochondria are the cell's organelles responsible for releasing energy stored in food. They are often referred to as the "powerhouses" of the cell. Through a process called cellular respiration, mitochondria convert nutrients from food, such as glucose, into usable energy in the form of adenosine triphosphate (ATP). This energy is essential for various cellular activities and functions. Mitochondria are found in most eukaryotic cells, including animal and plant cells.
The primary function of mitochondria is to generate energy in the form of ATP through a process called cellular respiration. This process involves breaking down organic molecules, such as glucose, obtained from food to release energy. Mitochondria act as the site for several interconnected reactions that occur in different stages: glycolysis, the citric acid cycle (also known as the Krebs cycle), and the electron transport chain.
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what is typical of cell reproduction when normal cells are reproduced in a Petri dish from a tissue culture? check all that apply
1.cells reproduce only when there is room in the Petri dish
2.cells reproduce one layer thick and then stop reproducing
3.cells undergo unlimited reproduction by mitosis
4.when a cell dies or is damaged, a new one is created to fill the empty spot
Which of the following is NOT true of viruses? A. They usually infect specific types of cells. B. They're nonliving particles. C. They reproduce on their own without hosts. D. They're able to crystallize.
The mitral valve is in between which two chambers of the heart?
Left atrium is known to be one of the four chambers of heart that receives oxygenated blood from the right and left pulmonary veins. This blood is pumps to the left ventricle through the mitral valve. However, left ventricle is responsible for pushing oxygenated blood through the aorta to the rest of the body.