Answer: Phototaxis
Explanation: Phototaxis is the phenomenon by which locomotory movement of the organism occurs towards or away from the stimulus of the light.
This is advantageous for the phototropic organism as they can move efficiently towards the sunlight which helps them to make food by the help of sunlight and other substances.
The phototaxis is called positive if the movement is towards sunlight and negative if the movement is against light.
which research question about the largemouth bass and whirligig beetle would best match the scientists' observations?
a.how log do fish spend rinsing their food?
b.what is the favorite food of a larrgemouth bass?
c.which insects produce the most foul-tasting substances?
d.does the slow release of a foul-tasting substance increase survival?
Imagine that a chromosome contains the following chromosome order ZYXWVUT. What type of mutation happens to produce ZYXWWVVUT?
A biologist observes that ocean temperature decreases with increasing depth and concludes that deep sea creatures are superior animals because they can survive in harsher environmental conditions. Why is this an invalid scientific conclusion?
A. The data was not compared among several sampling sites.
B. The data did not specify the measurement system used.
C. Scientific data cannot be used to make judgments of organism superiority.
D. Scientific data cannot be used to measure temperatures that are inaccessible to humans.
If matter cannot be created or destroyed within the physical universe, then the total quantity must be _____????????
if a codon in RNA was GAC, what would it's copy be?
Because of when the chromosomes pair up during meiosis, crossing-over must occur during
Why must organisms of the estuary be adapted to varying levels of salinity? A.Fresh river water flows into the estuary
B.Saline ocean water flows into the estuary
C.Ocean tides increase and decrease the amount of ocean water
D.All of the above
Organisms in estuaries must adapt to varying levels of salinity due to the unique environment where fresh river water and saline ocean water meet, creating varying and changing salinity levels. Fresh river water, saline ocean water, and ocean tides all contribute to these salinity changes.So, the correct answer is D. All of the above.
Explanation:Organisms in the estuary must be adapted to varying levels of salinity because of the unique factors of their environment. The estuary is a transitional zone where fresh river water meets marine or saline ocean water. This creates varying levels of salinity, which can even change with the tides. Therefore, organisms living there have to adapt to this ever-changing salinity environment.
This happens because of a combination of the factors mentioned in options A, B, and C. Fresh river water from inland sources flows into the estuary (option A), increasing the freshwater content. On the other hand, saline ocean water also flows in (option B), increasing the salinity. Furthermore, the rise and fall of ocean tides can increase and decrease the amount of saline water entering the estuary (option C). So, the correct answer is D. All of the above.
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Cells of a multicellular organism are specialized. What does this statement mean?
A.
Cells of a multicellular organism can perform all the life functions the organism needs to survive.
B.
Cells of a multicellular organism perform all life functions but not at the same time.
C.
Cells of a multicellular organism are adapted for performing a specific function.
D.
Cells of a multicellular organism are specialized because they have a complex structure.
2. Which organelle acts like the “brain” or control center of the cell?
The weather department in Richmond is forecasting a snowstorm. What is likely to happen to the barometer and thermometer readings in Richmond?
A. Barometer readings will decrease, and thermometer readings will increase.
B. Barometer and thermometer readings will increase.
C. Barometer and thermometer readings will decrease.
D. Barometer readings will increase, and thermometer readings will decrease.
E. Barometer and thermometer readings will not change.
The correct answer is option D. Barometer readings will increase, and thermometer readings will decrease.
The barometers are the devices, which are used for the measurement of the pressure and the thermometer is a device, which is used for the measurement of the temperature. During snowstorm, the temperate is decreased and the pressure is high. So, the reading on the thermometer would decreased, and the reading on the barometer would be increased.
Answer:
D.
Explanation:
The pictures below show a cave and a geyser.
Which of these statements is correct about the cave and geyser shown in the pictures?
a. Both are formed when groundwater gets heated.
b. Both are formed when groundwater reacts with the limestone in rocks.
c. The cave is formed when groundwater reacts with the limestone in rocks and the geyser is formed when groundwater gets heated.
d. The cave is formed when groundwater gets heated and the geyser is formed when groundwater reacts with the limestone in rocks.
Answer:
c
Explanation:
The animals in the food web release _____ into the enviroment , which plants then use for ______ ?
A shark's skeleton is different from a goldfish because
a. the shark's skeleton is very dense.
b. the shark's skeleton is quite rigid.
c. the shark's skeleton is composed of bone.
d. the shark's skeleton is composed of cartilage.
Which of the following best describes a feature of the cell membrane's structure that allows molecules such as oxygen and hydrocarbons to easily cross the membrane and enter the cell?
a. The bilayer contains mostly polar molecules.
b. The interior of the lipid bilayer is hydrophobic.
c. The bilayer is embedded with transport proteins.
d. The exterior of the lipid bilayer is unsaturated.
Answer:
The interior of the lipid bilayer is hydrophobic (Ans. B)
Explanation:
The plasma membrane is selective in nature some of polar molecules and hydrophobic molecules can pass through the lipid bilayer of the cell membrane, large polar molecules and ions cannot pass through it.
By active and passive transport integral membrane proteins enables large polar molecules and ions to pass through the membrane. 3 primary factors which determine weather a molecule can diffuse through a membrane or not are : Size, Concentration and Charge.
Which of these is not a component of the cell membrane? question 19 answers phospholipids rna cholesterol proteins?
Fish, trees, and animals are important wildlife resources that we depend on for survival. Fish are a main source of food for many of the people in the world. Trees have been used to build and heat homes, make paper, and provide food for centuries. Humans hunt land animals such as deer, fox, antelope, and buffalo for food and other products. What can we do to protect wildlife resources so they will be around for future generations?
Answer:
harvest fast-growing trees, impose fishing limits, and impose laws to prevent poaching and illegal hunting
Explanation:
i got it right
For a given species, an increased evolutionary rate would cause a decrease in A) biodiversity. B) fitness of a species. C) similarity of the individuals in the species. D) the number of new genes in the DNA of the species.
Answer: C) similarity of the individuals in the species
Explanation: Similarity of the individuals in the species. It would be expected that increased evolutionary rate would cause individuals in the species to resemble each other less.
A good example of something that is biodegradable is __________.
a leaf in a compost pile
a plastic milk jug in a landfill
a plastic six-pack can holder in an estuary
a polystyrene burger container in a trash can
Fertilization occurs when _____. an organism clones itself two gametes come together and chromosomes combine binary fission takes place gametes are produced
Answer: the correct answer for the fill in the blank is- Gametes come together and chromosomes combine.
Fertilization is a process in which sex cells ( also called male and female gametes that are haploid) are fused together and form zygote ( diploid) that eventually develops into new organism.
There are two types of fertilization that is internal ( inside the body) and external fertilization ( outside the body).
Which of the following is an indicator of good water quality?
High levels of nitrates
High levels of phosphates
All of the above
Zero turbidity
I would think that it is B. Nitrates can be a form of pollution and D is usually from the speed of the water moving.
Answer:d
Explanation:took test
Which of these processes is used to break down glucose into ATP that is usable by the cell?
A) chemosynthesis
B) photosynthesis
C) respiration
D) transpiration
What did robert koch discover by using the compound microscope?
Chemical reactions that release energy are______________________
Which statement best summarizes "Save the Coral Reefs”?Coral reefs are a very important component of the ocean’s ecosystem because they support sea life, such as crabs and sea turtles. In fact, over four thousand species depend on the survival of the reefs, which are being destroyed by bleaching. More must be done immediately to save the reefs.
Development along the coastal regions has significant negative effects on coral reefs. The reefs are an essential part of the ocean’s ecosystem, and when people build structures on top of them, they are easily damaged because they are so fragile.
Answer;
-Coral reefs are a very important component of the ocean’s ecosystem because they support sea life, such as crabs and sea turtles. In fact, over four thousand species depend on the survival of the reefs, which are being destroyed by bleaching. More must be done immediately to save the reefs.
Explanation;
-Coral reefs are important for many different reasons aside from supposedly containing the most diverse ecosystems on the planet.
-They protect coastlines from the damaging effects of wave action and tropical storms ( they provide a buffer, protecting our coasts from waves, storms, and floods, helping to prevent loss of life, property damage, and erosion) and also provide habitats and shelter for many marine organisms.
Answer:
Coral reefs are a very important component of the ocean’s ecosystem because they support sea life, such as crabs and sea turtles. In fact, over four thousand species depend on the survival of the reefs, which are being destroyed by bleaching. More must be done immediately to save the reefs.
Explanation:
Explain why the chromosomes in the second drawing have sister chromatids, but the chromosomes in the third drawing do not. What happened to the sister chromatids?
The chromosomes in the second drawing have sister chromatids because DNA has replicated during the S phase of interphase, resulting in two identical copies that are joined at the centromere. By the third drawing, the sister chromatids have likely separated during anaphase, making them individual chromosomes.
Explanation:The chromosomes in the second drawing have sister chromatids because during the S phase of interphase, DNA replication occurs, which results in each chromosome being composed of two identical copies. These copies, called sister chromatids, are joined together at a region known as the centromere and are visible under a light microscope in the familiar "X" shape. The absence of sister chromatids in the third drawing is likely due to the chromosomes having moved into a stage of cell division known as anaphase, during which the sister chromatids are pulled apart toward opposite poles of the cell, thus no longer existing as attached pairs but as individual chromosomes.
Because second drawing twins (chromatids) separate in phase three, becoming solo chromosomes.
Here's why the chromosomes in the second drawing have sister chromatids, but those in the third drawing don't:
Second Drawing:
* The chromosomes in the second drawing have sister chromatids because they are in the prophase stage of cell division. In prophase, DNA replication has already occurred, resulting in each chromosome being duplicated. These two identical copies stay attached at the centromere and are called sister chromatids.
Third Drawing:
* The chromosomes in the third drawing lack sister chromatids because they are in the anaphase stage of cell division. During anaphase, the spindle fibers pull the sister chromatids apart towards opposite poles of the cell. This means each chromatid becomes an independent chromosome.
Therefore, the sister chromatids in the second drawing have simply separated and moved to opposite poles in the third drawing. This separation is a crucial step in cell division, ensuring that each daughter cell receives a complete set of chromosomes.
What does it mean if a scientist fails to reject a hypothesis?
state the numbered position of the moon that could result in a lunar eclipse
Final answer:
A lunar eclipse occurs when the Moon enters the Earth's shadow during its full phase when the Sun, Earth, and Moon are aligned.
Explanation:
A lunar eclipse occurs when the Moon enters the shadow of Earth. This event can only happen when the Sun, Earth, and Moon are precisely aligned, meaning the Moon has to be in its full phase. During a lunar eclipse, if you imagine the Earth's dark shadow as a numbered area, the Moon must be in the number corresponding to the darkest part of the Earth's shadow. This is a necessary condition for a lunar eclipse to occur and for the phenomenon to be observable from Earth.
An eclipse of the Moon, also known as a lunar eclipse, can occur when the Sun, Earth, and Moon are in a line. The Moon enters the shadow of the Earth, causing it to darken. The numbered position of the Moon that could result in a lunar eclipse is position 1, where a total eclipse occurs.
Create a sentence explaining how amino acids form proteins
Amino acids are monomers that combine to form polymers called proteins.
what form of carbon do plants remove from the air?
Electrons are excited in photosystem I. With what do these electrons combine to produce an energy-carrying molecule?
A.ADP
B.Glucose
C.ATP
D.NADP+