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Answer:

Tentacles have specialised stinging cells called nematocysts. They use these to immobilise their prey so that the tentacles are then able to move the food into the mouth.

Explanation:

Answer:

quit just drop out

Explanation:

Answer:

The population has evolved because there was a change in allele frequencies.

Explanation:

Answer:

Nitrate deficiency

Explanation:

Plants absorb nitrates in water through their roots. Nitrates are present in high levels in plant fertilisers. Without nitrates, the amount of chlorophyll in leaves reduces. This reduces the plant's ability to photosynthesise and grow properly, which reduces the farmers' crop yield .

Answer:

Early Eukaryotes were single-celled organisms that were present more than 1.6 to 2.1 billion years ago.

Explanation:

-Eukaryotes could be found in a variety of shapes and had a nucleus, a flexible membrane, and a cytoskeleton.

-Early eukaryotes used oxygen in metabolism.

Answer:  Many traits found in eukaryotic cells today would have been found in early eukaryotic cells. First, early eukaryotic cells would have had membrane-bound organelles. Also, DNA probably contained introns since this is seen in many eukaryotic cells today. Chromosomes were probably linear in shape. Lastly, these cells would have had mitochondria and membrane-bound organelles. Since these are seen in all eukaryotic cells today, we can infer that they would have been around in early eukaryotes as well.

Explanation:

Just answered it on EDG

Answer:

The correct answer is edema.

Explanation:

When the capillaries or the tiny blood vessels within the body leak fluid, the condition known as edema takes place. This fluid accumulates in the tissues surrounding it, resulting in inflammation. Edema generally takes place due to mild conditions like consuming more salt, staying or sitting in one position for a long duration, and others.

However, in some situations, edema can also be a sign of an extreme medical condition like kidney disease. During kidney disease, the sodium and additional fluid within the circulation may result in edema. The edema related to kidney disease generally takes place around the eyes and in the legs.

Answer:

A. bacteria, archaea, and eukaryotic.

Explanation:

Bacteria, archaea, and eukaryotic are the three domains of life.

The three domains system was globally implied. The three domains were Archae, Bacteria and Eukarya. The correct answer is option A.

The three domains of Carl Woese's categorization system are archaea, bacteria, and eukaryotes. The six kingdoms are archaebacteria (ancient bacteria), eubacteria (actual bacteria), protozoa, fungi, plants, and animals.

This classification system divides life into several groups based on differences in the 16S ribosomal RNA (rRNA) structure, the lipid composition of the cell membrane, and antibiotic sensitivity. The main distinction from earlier classification schemes is the division of Kingdom Monera into Archaea and Bacteria.

Therefore, the names of three domains given by Carl Woese were Archae, Bacteria and Eukarya i.e. option A.

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Answer:

appearance, reproduction, mobility, and functionality

Explanation:

Awnser : TAA-GCT-GAT

Complementary sequence: Nucleic acid sequence of bases that can form a double- stranded structure by matching base pairs. For example, the complementary sequence to C-A-T-G (where each letter stands for one of the bases in DNA) is G-T-A-C.

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Answer:Motion/direction is determined by an arrow

Explanation:

Osmosis is defined as the movement of solvent (like water) from a region where the concentration of solute(like salt) is lower to a region where the concentration of solute is higher through a semipermeable membrane.

Salt water is a hypertonic solution as the concentration of salt ( solute) is higher. Therefore, in this case water from vegetable will move outside causing the cells to become fragile.

Answer:

thank u

Answer:

A.

Explanation:

D. is most likely not the answer because it doesn't mention anything involving a increase in hawks nor does it mention A. but A. is more commonly known to cause decreases in certain animal species if affected in there homeland.

~ LadyBrain

Answer: B) The gravity of dark matters distorts light from distant sources.

Explanation: In spite of the fact that stargazers can't see the dull matter, they can recognize its impact by seeing how the gravity of enormous world bunches, which contain dim matter, twists, and misshapes the light of more-far off systems situated behind the group. This marvel is called gravitational lensing.

The gravity of dark matter distorts light from distant sources.

Hubble's is perfectly adapted for examining the fascinating visual phenomena that gravity may produce when taken to its limit. The general theory of relativity developed by Albert Einstein describes how mass concentrations warp the universe around them.

When a massive mass of matter, such as a group of galaxies, produces a gravitational field that bends and magnifies light from distant galaxies that are in front of it but in the same line of sight, the result can be a gravitational lens.

Therefore, The gravity of dark matter distorts light from distant sources.

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Answer:

Epidermis and Dermis

Explanation:

The two distinct layers of the integument consist of a layer of stratified squamous epithelium called the Epidermis and a deeper layer of areolar and dense irregular connective tissue called the Dermis.

The Epidermis is the outermost layer of the skin while the Dermis can be found under the epidermis and is also known as the thickest layer thereby providing strength to the skin

Answer:

Variation among individuals of the same species can be explained by both genetic and environmental factors. ... The set of variations of genes present, together with the interactions of genes with their environment.

Explanation:

Answer:

Thank you!

Explanation:

Just took the test, got it right :) It's Moon

Answer:

Climate , temperature , and other organisms

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Answer:

Blacktip reef sharks are a critical source to help maintain the delicate balance of marine life in reef environments. They keep fish populations in check and the reefs healthy. However they are highly valued for their meat, fins, leather, liver oil, and fishmeal which makes them prone to overfishing and targeting, and they are endangered yet they are also highly valuable in tourism.

Explanation:

Answer:

C) Both Suresh and Gail could be correct.

Explanation:

The pre-messenger RNA (pre-mRNA) transcript obtained after transcription of eukaryotic genes must undergo several processing events, including a process known as intron splicing, where introns (i.e., the non-coding sections of an RNA transcript) are removed and exons (coding regions) are joined to form a mature mRNA molecule. The three prime untranslated (3′-UTR) region of this mRNA can also bind to regulatory non-coding RNAs such as, for example, miRNAs which inhibit gene expression by inhibiting translation and/or by triggering its degradation. Moreover, the 3′-UTR region may also contain silencer sequences that bind to repressors in order to inhibit gene expression. On the other hand, translation refers to the process by which an ordered polypeptide chain (i.e., a protein) is synthesized by using the information contained in an mRNA molecule. In consequence, in the case under consideration, the mutation in the second gene could affect both RNA processing and the regulation of translation, thereby equally affecting HOX3A protein synthesis.

Answer:

The half-life of a substance is the amount of time it takes for half of that substance to decay. However, after two half-lives, half of the half remaining will decay, leaving you with one quarter of the original substance.

So, after 1 million years you will have 50% of the original substance remaining.

And, after 2 million years you will have 25% of the original substance remaining.

After 3 million years you will have 12.5% of the original substance remaining.

And after 4 million years you will have 6.25% of the original substance remaining.

Explanation:

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The statement that best describes the two species depicted in the graph is option C) Species A is a predator and species B is its prey.

Option A indicates that species A is a producer and species B is its consumer. This means that species B requires the output from species A to survive. Knowing this, we would expect to show that species B increases in population as the population of A increases, due to increased food supply, the graph shows the opposite scenario. Thus, option A is false.

Option B states that perhaps Species A is a host and species B is its parasite. This provides the same conditions and dependencies as option a, so for the same reasons that a is false, we can conclude that option B is false as well.

The final incorrect option is D, Species A is a scavenger and species B is its decomposer. This would mean that as the population of species B dies off, it increases the food supply of Species A which feeds on the decomposing members of species B. We would expect in this case, that species A would flourish as B dies off, however, we see that as species B dies, species A follows shortly after. This tells us that option D is incorrect.

The correct option is C, Species A is a predator and species B is its prey. This would mean that species A consumes the members of species B to survive. Therefore we would expect to see

This is exactly what the graph depicts, so option C is correct.

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Answer:

A lysosome is a membrane-bound cell organelle that contains digestive enzymes. They break down excess or worn-out cell parts. They may be used to destroy invading viruses and bacteria.

A vacuole is a membrane-bound cell organelle. In animal cells, vacuoles are generally small and help sequester waste products. In plant cells, vacuoles help maintain water balance. Sometimes a single vacuole can take up most of the interior space of the plant cell.

Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate

Explanation:

Lysosome digest worn out cell and destroyed invading viruses and bacteria

Vacuole help to maintain water balance

Mitochondria is produced energy to cell in form of ATP

Answer:

I believe that it is the brain stem

Explanation:

The brain stem, at the bottom of the brain, connects the cerebrum with the spinal cord. It includes the midbrain, the pons, and the medulla. It controls fundamental body functions such as breathing, eye movements, blood pressure, heartbeat, and swallowing.

Answer:

Palatilism

Explanation:

Due to one organism benefiting (tapeworm ) while the other organism is harmed (dog)

Answer:

B) Particulates

Explanation:

_____Particulates_____ are small objects that are suspended within the atmosphere