Why do we recycle?
in long answer
when paleontologists dated the Burgess shale fossils to the Cambrian period because trilobites were found among them, were they using relative dating or absolute dating?
Answer:
They used relative dating to date the Burgess Shale fossils.
Explanation:
Absolute dating wasn’t discovered yet.
what gives animal cells their shape and structure?
Answer: Animal cell's shape and structure are determined by the cytoskeleton.
What is the cytoskeleton?
The cytoskeleton is present in all animal cells, prokaryotic (bacterial) cells contain a very rudimentary version of it, while plant cells do not have one at all. It consists of several types of large molecules that provide physical support to the cell as well as internal transport along its length for organelles like endoplasmic reticulum (ER), mitochondria, vacuoles, etc. The three main components are microtubules, intermediate filaments and microfilaments which give rise to different structures within the cell. Microtubules are long cylindrical tubes made up of two protein subunits (alpha and beta tubulin) that form a hollow tube. These are the main components of the cytoskeleton, they provide support to the cell while also having transport capacity for organelles like endoplasmic reticulum (ER), mitochondria, vacuoles, etc. Microtubules are dynamic structures which means their state is constantly changing i.e., growing, shrinking or moving around depending on requirements of the cell.
The primary electron acceptor in photosystem II is __________. Group of answer choices P700 P700 P680 P680
Answer:
680
Explanation:
When the P680 special pair of photosystem II absorbs energy, it enters an excited (high-energy) state. Excited P680 is a good electron donor and can transfer its excited electron to the primary electron acceptor, pheophytin.
how is the malphigan body adapted for it's function
An organelle that releases energy for metabolic activity in a nerve cell is the...?
Answer:
Mitochondria
Explanation:
Mitochondria is an organelle that creates energy in the form of ATP in all living cells.
in response to action potentials arriving along the transverse tubules, the sarcoplasmic reticulum releases:
What are valence electrons?
Answer: : a single electron or one of two or more electrons in the outer shell of an atom that is responsible for the chemical properties of the atom.
Explanation:
Adaptational characteristics of himalayan animals
Answer:
Thick layer of body fat or bubbler, to reduce body heat loss. Strong hooves for walking on rock slopes. Thick fur on paws for protection from cold while walking on snow.
Explanation:
1) Thick layer of body fat or bubbler, to reduce body heat loss.
2) Strong hooves for walking on rock slopes.
3) Thick fur on paws for protection from cold while walking on snow.
Question 41 A basement membrane anchors Multiple choice question. A) muscle tissue to nervous tissue. B) epithelial tissue to connective tissue. C) connective tissue to muscle tissue. D) brain tissue to nervous tissue. E) blood cells to plasma.
Answer:
B) Epithelial tissue to connective tissue
Explanation:
The effects of this type of severe weather can include tress blown over by high winds, flooding caused by heavy rains, and damage to coastal areas caused by storm waves. What type of severe weather does this describe?
A. tornado
B. thunderstorm
C. blizzard
D. hurricane
Answer:
thunderstorm
Explanation:
"Plants can survive on their own, because they make their own food. Animals can’t survive on their own but need plants for survival." A. Do you agree with this statement? B. Why or why not? C. Provide evidence to explain your reasoning.
Answer:A
Explanation:
Yes yes because it is required for photosynthesis to take place. ... he reactants that go into photosynthesis come out of respiration. Plants can survive on their own, because they make their own food. Animals on the other hand, cant survive without any food source
in the presence of a regulatory protein the lac operon is _____.
Answer:
The correct answer is : B. not transcribed
Explanation:
The regulatory protein of the lac operon is a repressor. A operon is a stretch of DNA consisting of an operator, a promoter, and genes for a related set of proteins, usually making up an entire metabolic pathway. The genes of an operon are sequentially ordered after the promoter.
write a paragraph about Balochistan
Explanation:
Balochistan is located at the eastern edge of the lranian plateau and in the difficult to define border region between southwest, central and south Asia.
What are the differences between an onion and a whitefish cell
lymph is largely composed of water that has escaped from
4. Arterioles are the
a. Vein system.
b. Arteries system.
c. Arteries and vein system.
d. Arteries and blood system
Answer:
b. Arteries system
Explanation:
Mutations that lead to genetic disease commonly cause human illness because:
A. a molecule normally metabolized by an enzyme accumulates to toxic levels.
B. the overproduction of enzymes makes you sick. mutations in DNA cause body cells to self-destruct.
C. mutations cause extra DNA to be made, which gets into your blood, causing illness.
D. most genetic diseases make people more likely to become sunburned.
Answer:
The answer is A.
Explanation:
I have no explanation for this but I know for a fact that it's A.
Which layer of the atmosphere is experiencing this storm?
Answer:
Troposphere
Explanation:
Almost all weather occurs in the lowest layer of the atmosphere, called the Troposphere. The exception being large storms like hurricanes and large Thunderstorms. These storms have clouds with great vertical development and the tops of these storms go into the Stratosphere.
Discuss 2 other ways that scientists believe
kingdoms should be divided.
Answer:
Plants and animals? ...The question says two OTHER ways, and I don't know what ways have already been listed.
Explanation:
The two main kingdoms in the animal kingdom are plants and animals.
Scientists also list four other kingdoms including bacteria, archaebacteria, fungi, and protozoa.
Hope this helps answer the question. Comment if you need further help!
Please help me!! ASAP
Answer:
B) Mushroom --> Heterotroph
C) Algae --> Autotroph
A) Autotroph --> Producer
D) Hetrotroph --> Comsumer
Explanation:
Mushrooms are decomposers because like other fungi, they break down dead and decaying matter to make their own foodProducers, such as plants and algae, acquire nutrients from inorganic sources that are supplied primarily by decomposers whereas decomposers, mostly fungi and bacteria, acquire carbon from organic sources that are supplied primarily by producers.Primary producer; organisms, such as plants and phytoplankton, that can produce their own food through photosynthesis or chemosynthesis; also called autotrophs.Consumers are also referred to as heterotrophs in contrast to autotrophs, which are the producers of the food chain. Consumers therefore include animals and heterotrophic bacteria and fungi. Plants that are carnivorous and therefore consume organic matter as well are regarded as both consumers and producers.Have a great day! :D
Photosynthesis (Where does the electron that is excited by light is taken). What is the source of the electron, where does it end up?
Answer:
The source of the light electron is the sun and it is taken in by the chlorophyll contained in the chloroplasts.
Explanation:
Approximately 3.85 billion years ago, a group of single-celled microorganisms known as __________ were alive, reproducing, and evolving.
Microbes. — cells that have a nucleus, like an amoeba or a paramecium
In creating recombinant DNA, some restriction enzymes produce ______ ends in both the source DNA and plasmid DNA, and these ends can stick to each other by ______.
Answer: Single-stranded; complementary base pairing
Explanation:
Restriction enzymes are essential components of recombinant DNA technology because they can be extracted from bacterial cells and utilized in the lab to modify DNA fragments, including those that contain genes (genetic engineering).
What recombinant DNA produce by restriction enzymes?An isolated bacterial protein called a restriction enzyme breaks DNA at specific sequence-specific locations to produce DNA fragments with a known sequence at each end.
For several laboratory techniques, such as genetic engineering and recombinant DNA technologies, restriction enzymes are essential.
Therefore, In creating recombinant DNA, some restriction enzymes produce Single-stranded ends in both the source DNA and plasmid DNA, and these ends can stick to each other by complementary base pairing.
Learn more about restriction enzymes here:
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describe how the plasma membrane helps maintain homeostasis
Answer:
The plasma membrane, also called the cell membrane or phospholipid bilayer, is the sack that surrounds cells. ... The plasma membrane maintains homeostasis in the cell by keeping cell contents in and foreign material out, and by providing controlled avenues for the transportation of fuel, fluids and waste
7)
.......... and....
Are weak forces of attraction.
Answer:
inter molecular forces and van der wall forces are weak forces of attraction.
Explanation:
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if woman can not have children does that mean that she does not have all the property of life and is therefore not alive
QUESTION 7
All of the following cells might be a product of meiosis EXCEPT?
OA) an egg
O B) a liver cell
OC) a spore
OD) a sperm cell
E) a gamete
Answer:
B) Liver Cell
Explanation:
An egg and a sperm cell are reproductive cells that are products of meiosis
A spore is produced by meiosis in the sporophyte
A gamete is produced through meiosis
Which is the BEST statement about joint flexibility? A. It is constant for any joint type. B. It is constant within a family. C. It is consistent between an individual's joints. D. It varies from joint to joint. Please select the best answer from the choices provided. A B C D.
Which is the BEST statement about joint flexibility?
Answer : D
Explanation : It varies from joint to joint.
Hope this helps you!
The amount of flexibility can vary greatly from joint to joint and is affected by various factors such as joint structure, muscle strength and elasticity, age, and physical activity level. Hence option D is correct.
What is joint flexibility?Joint flexibility refers to the range of motion (ROM) of a joint or a group of joints. It is the ability of a joint to move through its full range of motion without causing any pain or discomfort.
Joint flexibility is an important aspect of physical fitness and is essential for performing daily activities and participating in sports and exercise.
Joint flexibility is determined by several factors, including the anatomy of the joint, the length and elasticity of the muscles surrounding the joint, and the presence of any injuries or medical conditions affecting the joint.
Some joints, such as the shoulder joint, are naturally more flexible than others, like the knee joint.
Flexibility can vary between individuals and between different joints in the same individual. For example, someone may have very flexible hip joints but limited flexibility in their shoulder joints.
Similarly, an individual's joint flexibility can also be influenced by age, gender, and activity level.
Hence option D, It varies from joint to joint. is correct.
To learn more about joint flexibility:
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Pathways that transmit sensory impulses are also called ______ pathways because the information travels from sensory receptors superiorly through the spinal cord to the brain.
Answer:
Ascending pathway
Explanation:
Sensory pathways are ascending pathways