Answer:
glucocorticoids
Explanation:
The first confirmed detections of extrasolar planets occurred in ____________.
Answer:
9 January, 1992
Explanation:
The first confirmed detection of extrasolar planet (or) exoplanet occurred in the year 1992.
What is the defining criterion for determining a human male?
Select one:
a Y-chromosomes
an X-chromosome
a male reproductive organ
ability to grow a beard
Answer:
A Y-chromosome
Explanation:
Males have one X and one Y chromosome
Cilia are similar in structure to flagella and are commonly found on which microbial cells?.
Answer:
I think the answer will be protozoa. Cilia are similar in structure to flagella and are commonly found on protozoa.
Hope this helps!!
The project that sequenced and mapped all of the genes in the human body is known as _____.
Answer:
The answer is Human Genome Project
Explanation:
The project that sequenced and mapped all of the genes in the human body is known as Human Genome Project .
identify the process shown in
the diagram to the right
Interferon is a group of proteins produced by cells in response to the presence of Group of answer choices viruses. chemical irritants. bacterial cells. malarial parasites.
Interferon is a group of proteins produced by cells in response to the presence of viruses.
What is an interferon?Interferon is a type of signalling protein that is released by the immune cells of a human body which is as a result of a response to an invading viral pathogen.
These proteins are called interferon because they interfer with the activities of viruses and prevents them from multiplying.
There are two type of interferon which are secreted by different cells they include:
Type I interferon: They are secreted by virus-infected cells.Type II interferon: They are secreted by T cells, natural killer (NK) cells and macrophages.Therefore, Interferon is a group of proteins produced by cells in response to the presence of viruses.
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Mechanisms that regulate smooth muscle contraction (independently of nerves or hormones) by which organs and tissues alter their own arteriolar resistances and blood flow are referred to as ______.
Mechanisms that regulate smooth muscle contraction (independently of nerves or hormones) by which organs and tissues alter their own arteriolar resistances and blood flow are referred to as : Myosin and actin
Meaning of Myosin and actin
Myosin and actin are proteins that are found in all type of muscle tissue.
Smooth muscles (Heart) do not need nerves but it is an involuntary action, due to the presence of the myosin and actin, it work continuously.
Myosin and Actin are like a sliding filament in the muscle structure of the heart. they cause the heart to work continuously.
in conclusion, the Mechanisms that regulate smooth muscle contraction (independently of nerves or hormones) by which organs and tissues alter their own arteriolar resistances and blood flow are referred to as : Myosin and actin
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The genome of a virus is contained in the virus core which is made up of.
Answer:
genome includes both the genes and the noncoding DNA, as well as mitochondrial DNA and chloroplast DNA.
Explanation:
A genome is all of an organism's genetic information, according to molecular biology and genetics. It is made up of DNA nucleotide sequences. Genes and noncoding DNA, as well as mitochondrial DNA and chloroplast DNA, are all part of the genome. Genomic science is the study of the genome.
Convergent evolution is when a species evolved from a common ancestor.
True
False
Answer:
False
Explanation:
Convergent evolution is when two species with different ancestors evolve to have similar traits to do similar purposes. Ex: the structure of the arm of differnet mamals. They all do the same thing, and the general make up is the same, but mammals are in no way the same species.
Divergent evolution is the type of evolution that comes from species of the same ancestor, but thats when they evolve differently despite having the same ancestor to adapt to their enviroment (ex: bird beaks).
The diagram shows some of the energy inputs and outputs for a farm animal. How much of the energy in the cow's food was transferred into food for humans?
which of the following statement is true
a. friction makes an object slides
b. gravity pushes an object upward
c. force is needed to stop object
d. an object in motion will remain in motion.
The correct statement among the given answers is letter d. an object in motion will remain in motion.
WHY?In reality, object that is in motion (like a ball) will remain in motion unless it's stopped by something (a wall or any force).
This is stated in the first law of motion by Sir Isaac Newton -- an object in motion will remain in motion unless an outside force acted upon the object.
A synapse is the specific location where ____________ is functionally connected to either another neuron or ____________ . There are two types of synapses in the human body: chemical synapses and electrical synapses. Most synapses within the nervous system are ____________ synapses.
Synapse is the connection stablished between neurons or between neurons and effector cells. a) a neuron b) effector organ c) chemical.
What is a synapse?
Neurons transmit nervous impulses.
Every neuron forms connections with other neurons or with effector organs, such as the muscle. These connections are known as synapses.
Synapses can be either chemical or electrical. The most common one is the chemical synapses that involve the release of a substance known as a neurotransmitter.
During chemical synapses, when a presynaptic neuron sends information, it releases neurotransmitters. This event is done through exocytosis.
The neurotransmitter is a molecule that travels through the synaptic space forward to the other neuron or effector cell. Once the chemical reaches the postsynaptic membrane, it binds to its receptors.
This binding neurotransmitter-receptor produces excitatory postsynaptic potential, which is the depolarization of the postsynaptic cell.
Once the action potential is initiated, it spreads to the rest of the membrane, depolarizing it.
A synapse is the specific location where _a neuron_ is functionally connected to either another neuron or _an effector cell (i.e. muscle)_ . There are two types of synapses in the human body: chemical synapses and electrical synapses. Most synapses within the nervous system are __chemical__ synapses.
You can learn more about synapses at
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What is the US Census Bureau requirement for a place to be classified as urban?
A: no less than 1 million people
B: any population over 100,000 people
C: a population of 10,000 or more
D: at least 1,000 people per square mile
Answer:
at least 1,000 people per square mile
Explanation:
I took the test it was correct. ( i know thats not an explanation im sorry but its correct).
Earth is not filled to the brim with elephants, or ants, or ferns, or geckos. What prevents a population from growing forever? many different factors limit population growth. Some of these factors are density-dependent, and others are density-independent. Drag a label under each graph to indicate whether it shows density-dependent population regulation or density-independent population regulation. Labels may be used once, more than once, or not at all.
Factors preventing growth include density-dependent birth rate, density-dependent death rate, density-dependent birth rate, and density-independent death rate.
Whare are limiting factors?Limiting factors are different environmental conditions that prevent population growth in the ecosystem.
Density-dependent birth rate factors include ecologic relationships such as competition, predation and diseases.
Density-independent factors include both birth rate and death rate that affect size in a particular population.
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Are whales more closely related to fish or to elephants?
List 3 reasons
the relationship between the frog and the snake may be described as...
Answer:
Hello there! The relationship between a frog and a snake is a predator and prey. prey being the frog and predator being the snake.
Variation in offspring is important in maintaining genetic diversity within a population. Which of the answer choices indicates a mechanism of introducing genetic variation in a population? Select all that apply.
A) crossing over during meiosis
B) fertilization of an egg by a sperm
C) independent assortment during meiosis
D) mitosis producing two new daughter cells
E) binary fission resulting in two bacterial daughter cells
Answer:
The answer would be A, B, and C.
Explanation:
Since genes shuffle and assort randomly in meiosis, this is a cellular process that results in greater genetic diversity. Because haploid gametes form a diploid zygote in fertilization, this also increases genetic variation. However, binary fission and mitosis only result in daughter cells that are clones of the parent cell.
1 question: What means to divide a material into its various parts.?
2 question: The name given to matter that can be touched and manipulated is a what.?
3 question: Matter may exist is many what such a solid, liquid or gas.? help me asap
Answer:
1. analyze, dissect, break down mean to divide a complex whole into its parts or elements.
2. Substance
3. Matter exists in all of these forms (solid, liquid, gas) for example, water exists as ice, liquid water, and gaseous steam.
Explanation:
I hope that this helped!!
I'm sorry if any of it is not what you're looking for.
Dawnin developed four theories of evolution, which of the following is NOT one of his theories?
A. Living organisms evolve over time.
B. Natural Selection is the main cause of evolutionary change.
C. Evolutionary change occurs quickly, and is caused by large mutations.
D. The splitting of lineages into two or more species has occurred.
Dawnin developed four theories of evolution and not one of his theories that evolutionary change occurs rapidly and is caused by large mutations.
What are Charles Darwin's theories?Charles Darwin was a British naturalist who proposed the theory of biological evolution by natural selection. Darwin defined evolution as "descending with modification", the idea that species change over time, give rise to new species and share a common ancestor.
With this information, we can conclude that Dawnin developed four theories of evolution and not one of his theories that evolutionary change occurs rapidly and is caused by large mutations.
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