Look at the diagram of a material tester.
A material tester. A bulb is attached to the negative end of a battery using a wire. The other end of the bulb is attached to a material. The other end of the material, again, is connected to the positive pole of the battery with the help of a wire.
Four students were each given four different objects to test to see if all objects in their group are conductors of electricity. Which group contains no objects that will light the bulb?
A. rubber band, steel nail, copper wire, stick of wood
B. yarn, cotton swab, bubble wrap, penny
C. plastic straw, wooden cube, glass marble, balloon
D. gold bracelet, metal spoon, aluminum nail, silver spoon
Answers
Answer:
The answer is C since there is no metal in the materials
Explanation:
Related Questions
Which organisms in the food web are primary consumers?
sparrow, owl, ladybug, grasshopper
grub, mouse, sunflower
mite, grasshopper, caterpillar, grub
owl, sparrow, mouse
Answers
Answer:
mite, grasshopper, caterpillar, grub
Explanation:
These are all examples of primary consumers because they only eat autotrophs (plants).
What conclusion have scientists made based on these observations? All vertebrates come from the same common ancestor. b. All vertebrates move in the same way. All vertebrates fossilize similarly. d. All vertebrates have evolved to live out of the water.
Answers
Answer:
All vertebraes fossilize similarly
Explanation:
Because they evolve different types of digestive system that helps in the digestion of different foods they eat
how does light intensity affect the rate of photosynthesis??
Answers
Answer:
Because more light allows more chemical reactions in the plant to occur there for helping increase the rate of photosynthesis.
Explanation:
A shared derived trait is a unique feature common
Choose one:
A. to all members of a group that originated as a result of convergent evolution.
B. to all members of a group that originated in the group's most recent common ancestor.
C. to all members of a group that did not originate in the group's most recent ancestor.
D. to some members of a group that originated in the group's most recent ancestor.
Answers
A shared derived trait is a unique feature common to all members of a group that originated in the group's most recent common ancestor (Option B). It is evolution.
What is a shared derived trait?A shared derived trait is an evolutionary phenotypic feature present in the common ancestor of a taxonomic group.
This trait (shared derived trait) can then be used to trace the evolutionary relationships in a taxon.
A shared derived trait can be a homo-logous structure that suffered divergence across time.
Learn more about shared derived traits here:
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Which organism in the food web above occupies multiple trophic levels?
Show Your Work
Answers
Answer:
F
Explanation:
It occupies both the third and fourth trophic levels. i.e
1st trophic level: Producer(plants)
2nd trophic level: Plant eaters (B & C)
3rd trophic level: Secondary consumers (E & F)
4th trophic level: Tertiary consumers (H & F) (they both feed on E which is a secondary consumer)
Thus F is both a secondary and tertiary consumer.
The secondary ossification center in a long bone is located in the:.
Answers
Answer:
epiphyses
Explanation:
hello humans ~
Which among the following is not the function of lysosomes?
A. Breaking down of food particles.
B. Protection against the pathogens.
C. Perform photosynthesis.
D. Digest worn-out cells.
Answers
Answer:
C. Perform photosynthesis.
Explanation:
Lysosomes are membrane-bound organelles that can degrade biomolecules such as proteins, carbohydrates, nucleic acids, and lipids
Hope it helps!!! brainliest pls!!!bats vs skunks. Who will win?
Answers
Answer:
Probably a bat because it has the advantage of flight something a skunk cant do. And yes although the skunk can shoot its gas all the bad has to do is avoid it right? But bats don't sense gas they sense sound since they don't have good vision. But they can sense heat and since a skunks defense is a huge pile of heat it can steer clear and beat the skunk.
Explanation:
To insert a DNA segment into a plasmid, it is necessary to cut and stick the DNA molecules. Which enzymes are essential for this to happen?
Answers
Answer:
Restriction enzymes and DNA ligase are often used to insert genes and other pieces of DNA into plasmids during DNA cloning.
What part of the body signals the hypothalamus to cause a reduction of the amounts of ADH in the blood
Answers
Pituitary gland signals the hypothalamus to cause a reduction of the amounts of ADH in the blood
What is pituitary gland?pituitary gland is an endocrine gland that has a bean shape, it produces hormones that are needed in body and it can be found below the brain.
It also regulate body functions such as hormonal regulation.
Therefore, Pituitary gland signals the hypothalamus to cause a reduction of the amounts of ADH in the blood.
Learn more on pituitary gland here,
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Give 3 reasons why plasmids are considered ideal vectors.
Answers
Answer:
Self-replicating: Plasmids contains origin of replication and hence they are able to multiply by themselves independently of the chromosomal DNA. They maintain their number in progenies.
ii) Low molecular weight: Plasmids have low molecular weight which makes them easy to handle and hence can be present in multiple copies.
iii) Multiple Cloning Sites: This is a site on plasmid which has recognition sites for many restriction enzymes.
iv) Selectable Marker: Plasmid has certain genes which help in identifying the transformed cells. For example, antibiotic resistance genes.
v) High copy number: Due to low molecular weight of plasmids, they are present in multiple copies. High copy number plasmids are require to produce large quantities of the recombinant DNA.
vi) Host range: Plasmids used as coning vectors have narrow host range so that transmission of these plasmids to other organism in environment is avoided.
Explanation:
Cellular respiration is a ______________process where the bonds in food and __________ molecules are broken, and molecules are rearranged to form new compounds that can provide _____________ to muscles
Answers
Answer:Cellular respiration is a chemical process in which the bonds of food molecules and oxygen molecules are broken and new compounds are formed that can transport energy to muscles.
Explanation:
Why is rna incorporated into the dna molecule during dna replication?.
Answers
Answer:
The use of this RNA as a template allows telomerase to extend the 3′ end of chromosomal DNA by one repeat unit beyond its original length. The complementary strand can then be synthesized by the polymerase α-primase complex using conventional RNA priming.
Explanation:
Which category of veins are the main conduit for blood, are surrounded by muscle, and have an accompanying artery
Answers
What are the reactants for respiration?
Question 1 options:
water and sugar
carbon dioxide and water
water and oxygen
oxygen and sugar
Answers
Answer:
B
Explanation:
Carbon dioxide and water
Which of the following choices distinguishes an oxbow lake from a deep meander? (1 point)
A: A deep meander forms over soft rocks that are easily eroded. An oxbow lake forms where the river meets the ocean.
B: A deep meander is formed by erosion. An oxbow lake is formed by deposition.
C: A deep meander forms near the source of a river where water is fast-moving. An oxbow lake forms near the mouth of a river where water is slow-moving.
D: Water from a river flows through a deep meander. An oxbow lake is cut off from the river and contains still water. .
Answers
Explanation: For an oxbow lake to occur, there has to be and existing meander already. The necks break on the meander and deposition causes the lake to be separate from the river.
Answer:
B
Explanation:
give the girl/boy up there all credit.
Which statement best describes living off the grid?
Group of answer choices
living in isolation to refuse industrialization
living carefree to have great adventures in life
living independently without utilizing public utilities
living in isolation but with high dependence on public utilities
Which is NOT a reason why many people consider living off the grid?
Group of answer choices
to have more privacy
to develop self sufficiency
to cut down on increasing utility bills
to join the fad of living sustainably
Answers
Explanation:
living in isolation to refuse industrialization
Answer to 21?………………….
Answers
Answer:
its the first one is the correct answer
Answer:
They use ribosomes and molecules inside a host cell to reproduce
Explanation:
Viruses also known as the host cell and use its resources to make more viruses, basically reprogramming it to become a virus factory. Because viruses can't reproduce by themselves which also means without a host viruses are not considered living.
~Learn with Lenvy~
A bacterial culture grown in a glucose-peptide medium causes the pH to increase. The bacteria are most likely
Answers
Answer:
using the peptides
i hope that helps
Plasma makes up approximately what percentage of whole blood?.
Answers
Answer:
55%
Explanation:
Plasma constitutes 55% of total blood volume. Composed of 90% water, salts, lipids and hormones, it is especially rich in proteins (including its main protein albumin), immunoglobulins, clotting factors and fibrinogen.
Energy transformation also occurs in come object that we use .When you light a candle,the chemical energy of the candle is changed into________ A. Heat and light enegy B. mechanical energy C.nuclear energy D.sound energy
Answers
Answer:
apple and fruit and other stuff
Explanation:
because
While doing field research, two scientists discover a new species of plant. They take the plant back to their lab to watch how it grows and reproduces. Soon, the plant begins to produce a small purple flower. Upon further investigation, the scientists discover that the plant's seeds contain two embryonic leaves. Which group could the plant belong to
Answers
A dicotyledonous plant is an angiosperm that produces flowers and their seeds contain two cotyledons. The new species belong to the dicotyledonous group.
What is an angiosperm?
Angiosperms are woody or herbal plants, with a wide diversity of biotypes. Among many other characteristics, we can mention the followings,
They have flowers that can be either hermaphrodites or unisêxual, usually protected by perianth leaves.
During fertilization, pollen grains get in touch with the ovule. They have double fertilization.
They produce seeds from ovules protected in ovaries or closed carpel cavities.
They can be either monocotyledonous or dicotyledonous since seeds have one or two cotyledons.
What are dicotyledonous plants?
Dicotyledonous are one type of angiosperms. Among many other characteristics, we can mention the followings,
Their seeds carry two embryonic leaves -cotyledons-.
They have a primary root from which many secondary roots emerge.
Their stem is ramified, and their leaves have a reticulated vein system.
According to the description, the new plant species belong to the dicotyledonous angiosperm group.
You can learn more about dicotyledonous at
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How does one determine how much of a molecule is produced in a reaction?
A. The molar masses of the molecules tell how many grams of
product will form.
O B. Oxidation states are used to calculate the number of product
molecules.
C. The mass of the products is determined by adding the mass of the
reactants.
O D. The coefficients and molar masses are used to calculate amounts
of molecules.
SUBMIT
Answers
The earth is located _______ of the Milky Way galaxy.
Answers
Answer: The earth is located at the edge of the Milky Way galaxy.
Hope this helps!
Stages of mitosis?? 20 points!!!
Not sure what goes with what it’s like a matching game please help
Answers
Answer:
prophase- G1, S, G2, M
telophase- chromosomes condense and nucleus dissolves. centromeres and spindle fibers move into position
metaphase- lines at middle
anaphase- separated by spindle fibers and nuclear membrane regenerated
cytokinesis- splitting of cytoplasm
You are studying the enzyme alcohol dehydrogenase in a population of Drosophila. The allele frequency of the fast allele is 0.3 and the allele frequency of the slow allele is 0.7. Assuming the population is in Hardy Weinberg equilibrium, what is the expected frequency of heterozygotes in the population
Answers
What do the letters A, G, C, and T represent in nucleotides ?
A) phosphate groups
B) deoxyribose sugars
C) nitrogenous bases
D) ribose sugars
Answers
Answer:
C) nitrogenous bases
Explanation:
A = adenine
T = thymine (DNA only)
C = cytosine
G = guanine
:)
Answer:
C) nitrogenous bases
5. a) The human body produces hundreds of different enzymes. Why can't one type of enzyme be used
everywhere in the body? (4 points)
b) Pepsin is an enzyme in the stomach that helps break down proteins. What problems would you expect a
person to have if his or her stomach did not have enough pepsin? (2 point)
Answers
a) A single type of enzyme could not be used in every region of the body because the body is not a single celled organism, it is a multicellular organism and each cell needs special and specific care in order to function.
A single type of enzyme could not control all the different systems of the body. Different enzymes and specialized cells have the responsibility to carry out specific functions so that the body can properly operate. One type of enzyme could not manage the excretory, digestive, reproductive, skeletal systems etc as these regions of the body require distinct attention and assistance to keep the body regulations active and to maintain proper health.
b) Problems expected of someone who lacks pepsin would be a protein deficiency. This would be present by way of weak and brittle bones and overall immuno compromised health.
Another problem expected would be stunted growth and development. As an individual is not receiving the right and recommended amount of digested protein, their bodies will lack the nutrients to properly grow as they age.
Number 3? Someone pls help me
Answers
Answer:
option C
Explanation:
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Save our coral achieve 3000 answers
Answers
Answer: true
Explanation: pollution is killing fish and other animals in the ocean