Answer:
Skin, tears and mucus are part of the first line of defence in fighting infection. They help to protect us against invading pathogens. You have beneficial bacteria growing on your skin, in your bowel and other places in the body (such as the mouth and the gut) that stop other harmful bacteria from taking over..
Explanation:
when a microorganism comes towards us, its the first thing they come in contact with- our skin.
Which of the following is not a component of Guba & Lincoln's criterion, "trustworthiness"?
a) Transferability
b) Measurability
c) Dependability
d) Credibility
Ants and aphids often live near each other the ants Feed on the waste produced by the aphids and the aphids are protected from predators by the presence of the ants what type of relationship is this
Answer: the answer is mutualism. please give me brainliest
Explanation: Mutualism is a relationship between two different species in which both species have benefits. In this example, ants benefit because they feed on aphids' wastes while aphids benefit because ants provide them protection.Jul 8, 2016
Which characteristic does not belong to the bird class?
O feathers
O endothermy
O bones are packed solid
O no teeth
Answer:
bones are packed solid but am not that sure
Could I get help with these two questions please .
2 is D
I don't know what 3 is, sorry.
What is copied each time a cell divides?
Answer:
Mitosis is used to produce daughter cells that are genetically identical to the parent cells. The cell copies - or 'replicates' - its chromosomes, and then splits the copied chromosomes equally to make sure that each daughter cell has a full set.
Explanation:
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what's a trait that can possibly mask another trait
Answer:
recessive
Explanation:
Ligand gated means controlled by the _______________ or signal molecule. If the door is closed, certain ______________are blocked from entering the cell. When the ______________or signal molecule is attached, the door is open for certain ________________to enter the cell. These types of receptors are important in the _________________.
Answer:
ligand; ions; ligand; ions; nervous system
Explanation:
Ligand-gated ion channels are transmembrane protein complexes that open when they bind to their corresponding ligands (e.g., neurotransmitters). This type of receptor is known to modulate the synaptic transmission between neuron cells or neuron and muscle cells. In the nervous system, ligand-gated ion channels located at sites of synaptic contact determine the ion flow in response to neurotransmitter binding. Some examples of ligand-gated ion channels include gamma-aminobutyric acid A (GABA-A) and nicotinic cholinergic receptors.
The diagram below represents part of a process that occurs in cells
Which process is represented?
A meiosis
B osmosis
C replication
D translation
what is the carbon cycle in the alpine tundra ecosystem. (how does carbon move)
Answer:
Tundra is one of the biggest carbon dioxide sinks on Earth. ... As a result of climate change, tundra soils are thawing deeper and deeper and for a longer periods of time in the upper layers of permafrost. This causes organic matter to decompose faster, releasing larger amounts of carbon dioxide into the atmosphere.
True or false a producer eats other organisms?
Answer:
False
producers make food
Explanation:
help please!!
which of the following is the correct pathway of blood through the body, including the lungs?
no troll please!!!!
The correct pathway of blood through the body, including the lungs, is heart----> aorta----> body----> vena cava----> heart----> pulmonary arteries----> lungs----> pulmonary veins----> heart.
What is blood circulation?It is the circulation of blood throughout the body.
What are the two types?The two types are:
Pulmonary circulation starts with deoxygenated blood from the right ventricle where, through pulmonary arteries, it reaches the lungs (oxygenation of blood occurs), then through pulmonary veins, blood enters the heart in the left atrium.
Systemic circulation starts with oxygenated blood from the left ventricle, from where, through the aorta, it is pumped to the body, then to the superior or inferior vena cava, and then blood reenters the heart in the right atrium.
Hence, the correct answer is option b): heart--> aorta--> body--> vena cava--> heart--> pulmonary arteries--> lungs--> pulmonary veins--> heart.
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How is fossils the best evolutionarily evidence for scientist
Which is true of plant cells and not animal cells?
O A. They have a round shape.
O B. They have a nucleus. .
O c. They contain chlorophyll.
O D. They organize Into tissue.
O E. They are the smallest unit of living matter.
Answer:
Plant cells contain chlorophyll.
Explanation:
Plants contain chlorophyll which is what causes plants to appear green.
Plants do not have a round shape they have a square boxish shape.
Plant cells do indeed have nucleuses like animal cells .
Plant cells organize into tissue like animal cells.
Plant cells are not the smallest unit of living matter, microorganisms are.
In which of the following circumstances would a cell undergo apoptosis?
DNA damage in a cell cannot be repaired at a cellular checkpoint.
A cell becomes cancerous.
A cell successfully completes the G1 phase of the cell cycle.
A cell successfully completes the M phase of the cell cycle?
Answer:
i need help tooooooooooooo
PLEASE HELP!! WILL MARK BRAINLIST!!!
Biosafety practices protect workers, products and _________?
A. EPA
B. animals
C. the environment
D. NIH
Answer:
the environment
the environment
Question 4 of 25
What kind of molecule forms from polysaccharide chains that are very
strong?
O A. Protein
B. Cellulose
C. Monosaccharide
D. Lipid
SUBMIT
PREVIOUS
Answer:
B. Cellulose
Explanation:
Polysaccharide are substances that contains many units of monomers called MONOSACCHARIDE. They are carbohydrate molecules consisting of very long chains of monosaccharides like glucose, galactose etc.
An example of molecule that forms from strong chains of polysaccharides is CELLULOSE, which consists of long chains of glucose units linked together by B-1,4-glycosidic bonds. Cellulose is the most abundant polysaccharide on Earth found in plant cell walls.
On the basis of blood type, you know that one of the children could not have been the son of the two adults. Does this prove that the other child is their son
Answer:
No.
Explanation:
No, Blood test can't tell us that the which child is the son of two adults, it can only be find out by DNA testing of children with the two adults. If the DNA testing matches of children to the adults then we can say that these children are the sons of two adults while on the other hand, if the DNA of two children not match with the two adults then we can say that they are not their child.
Prokaryotic cells reproduce when a single cell splits into two cells. This process is known as which of
the following?
Budding
binary fission
vegetative propagation
fragmentation
Answer:
i need help tooooooooooooo
Answer:
Preparation for Reproduction.
Explanation:
Preparation for Reproduction. Before prokaryotes are able to reproduce, they have to meet certain guidelines that allow them to successfully complete the operation. For example, a prokaryote first has to reach a certain size in order to split into two different cells. This is important because without the necessary nutrients,...
why do you praise role of decomposers
Which of the following is a way viruses do not cause human diseases?
Viruses cause their host cell to burst and die.
Viruses remain dormant and attack human cells later on.
Viruses attack and kill harmful bacteria.
Viruses are parasitic and they infect their host.
Picture yourself hiking in a narrow canyon in Utah. The canyon is dry and it hasn’t rained for weeks. You see some thunderhead clouds in the sky, but not one drop of rain all day.
Nevertheless, a small rush of water starts to run through the canyon, turning it into a creek. There must have been a heavy rainfall somewhere nearby. Water runs down the sides of the canyon, forming little waterfalls. You realize that there could be a flash flood coming! You turn quickly up a side trail to higher ground before you are washed down the canyon.
What are the stimulus and response in this scenario?
A. The stimulus is the rain clouds and the response is the water in the canyon.
B. The stimulus is the appearance of water in the canyon and the response is moving to higher ground.
C. The stimulus is water running down the canyon walls and the response is little waterfalls forming.
D. The stimulus is the rain somewhere else and the response is you realize that there could be a flash flood.
Answer:
D i think
Explanation:
Answer:
D
Explanation:
Bcause tyeaws
Emtricitabine is one component in Truvada, a drug used for HIV pre-exposure prophylaxis (prevention). What functional group(s) are present
Answer:
2-(hydroxymethyl)-1, 3-oxathiolan-5-yl group.
Explanation:
2-(hydroxymethyl)-1,3-oxathiolan-5-yl group is a functional group of Emtricitabine. Emtricitabine is an antiviral medicine that treat human immunodeficiency virus (HIV) disease by preventing multiplication in your body. Emtricitabine comprise of organofluorine compound in which 5-fluorocytosine is substituted at the 1st position by a 2-(hydroxymethyl)-1,3-oxathiolan-5-yl group.
What occurs in an updraft?
A. Cool air from the surface spins in a circle.
B. Cool air from mountains causes high winds.
C. Warm air high in the atmosphere sinks.
D. Warm air from the surface rises.
Answer:
D. Warm air from the south rises.
Explanation:
Updraft occurs when the warm air from the surface rises.
What is Updraft?Updrafts occur when the warm air rises to the level when the process of condensation begins and precipitation starts to develop.
In a mature storm, updrafts are present alongside downdrafts that caused by cooling and falling of precipitation so we can conclude that updraft occurs when the warm air from the surface rises.
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HI
Which statement describes one of Wegener’s ideas that contributed to the theory of continental drift?
O The continents drifted apart due to repeated meteor impacts.
O The continents were once connected as one landmass.
O The continents have moved apart very quickly due to earthquakes.
O The continents are magnetically pulled toward or pushed away from
one another.
At the beginning of the formation of the planet Earth the continents were once connected as one landmass.
What was Pangea?Pangea was a huge continental landmass bathed by a single ocean that began to break up 230 million years ago and gave rise to the present-day continents. Configuration of the supercontinent Pangea in the Paleozoic era. Their lands were bathed by the Panthalassic ocean.
This happend it's called Pangea. There were similar fossil records in different continents.
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Answer: b. The continents were once connected as one landmass.
at what type of boundary would you find a rift valley that is growing wider
Answer:
Divergent boundaries
Explanation:
Answer:
divergent boundaries (◡‿◡)/
What are the similar features of Hinduism and Buddhism?
Answer:
Buddhism and Hinduism both originated in ancient India. Hinduism and Buddhism both involve belief in an ongoing process of rebirth. Both religions have same idea, that one may be released from ongoing rebirth, but are called different things and achieved through different actions.
What the Amazon climate
Answer:
Hot, humid and damp.... this is due to the Amazon Rainforest
Explanation:
hope this helps :P hav a gud day :3
4. If you just finished exercising, what happens to the amount of carbon dioxide you
exhale?!
Answer:
More Carbon dioxide is removed from the blood and exhaled in the breath
Explanation:
During exercise there is an increase in physical activity and muscle cells respire more than they do when the body is at rest. The heart rate increases during exercise. The rate and depth of breathing increases - this makes sure that more oxygen is absorbed into the blood, and more carbon dioxide is removed from it. So, when you exercise and your muscles work harder, your body uses more oxygen and produces more carbon dioxide.
Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?
a) The offspring will have the correct number of chromosomes when sperm and egg are joined.
b)Gametes have single function which requires less DNA to preform the function compared to somatic cells.
c)A reduction in the number of chromosomes reduces the chances for mutations that would affect the offspring.
d)The chromosomes in gametes are already replicated strands of DNA which returns the number of chromosomes to the original amount.
Answer:
B.
Explanation:
It is important to reduce the number of chromosomes in half when forming gametes for reproduction because offspring will have the correct number of chromosomes when sperm and egg are joined.
WHAT ARE GAMETES:Gametes are cells produced for the purpose of reproduction. Gametes are produced as a result of meiosis, which reduces the chromosome number by half. Gametes include sperm cells and egg cells, which fuse together to form zygote. The zygote develops into a new organism.Therefore, reduction is necessary in order to have the correct number of chromosomes when sperm and egg are joined.
Learn more about gametes at: https://brainly.com/question/15556909
This food web shows the flow of energy between producers and consumers. Choose ALL statements that correctly describe these
relationships.
A)
The Sun is not part of the food web of any ecosystem
8)
Consumers get their energy from plants or other animals.
C)
Producers are able to make their own food from sunlight,
D)
Sunlight is the source of energy that drives the food web,
E)
Consumers are the source of energy that drives the food web.
PLS HELP FAST
Answer:
b consumers get their energy from plants or other animals.
Explanation:
the consumers eat the plants or animals and that is how they get there energy. p.s i had a test about food webs