1. Which of the following are carcinogens (risk factors that are known to cause cancer)? a. harmful chemicals
b. genetic factors
c. excessive exposure to UV rays
d. all of the above
e. none of the above

Answers

Answer 1

Answer:

d. all of the above

Explanation:

Answer 2
D. None of the above

Related Questions

i need help asap pls help

Answers

Answer: okay im pretty sure its B) ...hope this helped!

Explanation:

Name the infectious agents can be good or bad for the human body and can even live skin

A. fungi
B. bacteria
C.parasites
D. viruses

Answers

Answer:

b

Explanation:

Explanation:

There are five major types of infectious agents: bacteria, viruses, fungi, protozoa, and helminths. In addition, a new class of infectious agents, the prions, has recently been recognized.

Hope this helps!

what is a roan color in cattle is controlled by codominant genes for both red and white hair. if a roan cow is crossed with a white bull, what percentof offspring would be white?

Answers

Answer:

50%

Explanation:

Roan color is controlled by two codominant alleles. Let us assume that the red color allele is R and the white color allele is W. Thus, the roan color would be RW.

Roan color cow is crossed with a white bull;

    RW   x   WW

RW   RW   WW   WW

RW = roan = 50%

WW = white = 50%

1/2 or 50% of the offspring would be roan color while the remaining 1/2 or 50% would be white in color.

Sea otters regulate the presence of the sea urchins and thus, kelp is regulated for all organisms in the ecosystem. They help to keep enough kelp for other wildlife to feed on. Also, due to their ability to absorb carbon dioxide, the kelp aid in mitigating climatic change and also reduce erosion by reducing the speed of water at the coast.However, if there were too many sea urchins and no sea otter to regulate their production, the kelp would reduce and thus with no food in the ecosystem, it would collapse. As a result, the sea otter protects the kelp forests by checking the local sea urchin population. The sea otter is an example of a

Answers

Answer:

keystone species

Explanation:

The sea otter is an example of a keystone species in the scenario.

A keystone species is an organism that has a significant influence on the functioning of the entire ecosystem. Without this species, the ecosystem would either cease to exist in total or entirely different in structure. In other words, a keystone species is a fastener that holds the ecosystem together.

In this case, the sea otter indirectly regulates kelp for all organisms in the ecosystem by directly regulating the presence of sea urchins. Without kelps, several ecosystem functions such as climate change mitigation and erosion reduction would cease. Thus, the sea otter is playing a significant role as a keystone species.

explain how science uses fossil evidence to support the theory of evolution

Answers

Answer:

they compare fossils to other fossils to see if skeleton changes are observed in a species over time it indicates that there is genetic change going on within the species

Answer:

Science uses fossil evidence to support evolution theories because you can link similar fossils among creatures from millions of years ago, to the living creatures of today.

hope this helps :}

what are the helpful measures to conserve human energy??​

Answers

Answer:

Adjust your day-to-day behaviors

Energy conservation can be as simple as turning off lights or appliances when you do not need them. You can also use energy-intensive appliances less by performing household tasks manually, such as hang-drying your clothes instead of putting them in the dryer, or washing dishes by hand.

Which of the following statements best describes the state of DNA inside of a prokaryotic cell?

a
46 X-shaped chromosomes inside the cytoplasm
b
46 X-shaped chromosomes inside the nucleus
c
a single circular chromosome in the cytoplasm
d
a single circular chromosome in the nucleus

Answers

Answer:

C.

Explanation:

It's a single strand of circular DNA found in the central area of the cell, which is not surrounded by a nuclear membrane.

define cartilage and nucleoplasm​

Answers

Answer:

cartilage: firm, whitish, flexible connective tissue found in various forms in the larynx and respiratory tract, in structures such as the external ear, and in the articulating surfaces of joints. It is more widespread in the infant skeleton, being replaced by bone during growth.

nucleoplasm​:the substance of a cell nucleus, especially that not forming part of a nucleolus.

Explanation:

Cartilage is also defined as aneural and hypocellular tissue [3], where normal mechanisms of tissue repair are not easily restored.

Nucleoplasm is the substance of a cell nucleus, especially that not forming part of a nucleolus


16.Which type of sediments would be most common where a river meets an ocean?
A. biogenous
B. cosmogenous
C. hydrogenous
D. lithogenous

Answers

C sounds most likely because HYDROgenous and Hydro means water
Answer has to be C . HYDROgenous

Help plzzzzzzzzzzzzzzzz

Answers

Answer:

I'm pretty sure it's D the diagram is kinda hard to interpret tho ngl

Explanation:

What part of a cell is more prone to mutations
What part of a cell is most prone to mutations

Answers

Answer: The DNA

Explanation: DNA is the only part of the cell that can mutate. That DNA could cause other cell parts to have mutations further down the road, though.

If you mean what part of the cell cycle, then it is interphase, while DNA is replicating.

It’s what the other person said

Where do you look in a plant cell to find dividing cells

Answers

Answer:

I believe you would want to look in the meristem of the plant

Explanation:

PLEASE SOMEONE HELP I’ll help back pls!!

Answers

5) If you did a moderately intense exercise, such as walking, you may have seen an initial jump in your heart rate (where your heart rate falls within the lower end of your target heart rate zone within about one minute of exercise), but then your heart rate only slowly increased after that.
I’m not sure if it’s the correct answer but I hope it helps you !! also can u help me back I really need it . good luck !!

Please help me! Tysm.

Answers

Earthquakes will most likely happen

The answer is earthquakes.

plz help its for a big grade
needs at least (10 sentences)!!!!!​

Answers

Answer:

Atom, smallest unit into which matter can be divided without the release of electrically charged particles. It also is the smallest unit of matter that has the characteristic properties of a chemical element. As such, the atom is the basic building block of chemistry.

Atom: has equal number of +ve charge (protons) and -ve charge electrons and hence atom has charge.

Neutrons (having no charge) and protons are present in nucleus. Electrons keep revolving around the nucleus in different shells.

HELP BIOLOGY ITS IMPORTANT

Answers

Answer:

Wild Type (brown), Chinchilla, Himalayan, Albino

I could be totally off but based on the research I've gathered and my knowledge on genes, that's from most common to least common.

Here are some of the tRNA molecules in Lucy's white blood cells. Let's see if tRNA #1 is carrying the correct amino acid for its anticodon.

Using the RNA Pairing Rules, find the correct codon for this tRNA's anticodon.
Anticodon

CCA

Codon

Amino Acid

RNA Pairing Rules
A ↔ U
​​​​G ↔ C

Answers

Answer:

For the tRNA anticodon CCA the corresponding codon is GGU, which codes for the amino acid Glycine (Gly).

Explanation:

Transfer RNA or tRNA is responsible for driving the right amino acid into protein synthesis, once the mRNA codon has been translated by the ribosome. It is for that reason that each mRNA codon must have a complementary tRNA anticodon.

The RNA pairing rules is that each nitrogenous base has a complementary base, so:  

- Adenine is complementary with uracil A=U

- Cytosine is complementary with Guanine C=G

In this case, it can be seen that:

For the anti-codon:  CCACodon:                      GGUAminoacid:               Gly

Answer:

For Anticodon it's: CCA

Codon it's: GGU

Amino Acid it's: Glycine (but when typing in the box for Amino Acid I typed in GGU and it was correct so that's the answer for Amino Acid.)

Hope this helps!

11. Which of these are objects that circle stars other than Earth's sun? Choose the correct answer.
Debelas
exoplanets
planetesima
nebulas​

Answers

Answer:

Exoplanets

Explanation:

Exoplanets (also known as extrasolar planet) are other planets outside the solar system. Exoplanets are of different categories, some of them orbit around other stars while some called rogue planets orbit the galactic center.

There are more than 4000 exoplanets which have been discovered, these planets have been discovered using the process of  Transit photometry and Doppler spectroscopy.

In a plant species, the allele for dark green leaves (D) is dominant over the allele for light green leaves (d). A plant with Genotype (Dd) is crossed with a plant with genotype (did). What percentage of the offspring are expected to be hybrid for the leaf color trait. A 0% B 25%. C.50%. D 75%

Answers

Dd is crossed over with dd.
So, as we set the punnet square. We get (2)Dd and (2)dd. So 100/2 = 50%.
Correct choice - C 50%.

The percentage of the offspring that is expected to be hybrid for the leaf color trait is 50%. The correct option is C.

What are alleles?

The trait is caused by a pair of two alleles on the chromosome, and there are two possible outcomes. The dominant allele, which is typically written in capital letters and will control the organism's phenotype even in the presence of the other allele, is the one that has the ability to silence the other allele.

It is used in biology to refer to inherited traits that do not manifest in the phenotype of the individual who possesses them but may do so in their offspring.

Recessive alleles, which are only expressed when they are homozygous, are this other type of allele. Both heterozygous and homozygous genotypes exhibit the dominant allele.

Dd is crossed by dd.

100 / 2 = 50%.

Therefore, the correct option is C.

To learn more about alleles, refer to the link:

https://brainly.com/question/7602134

#SPJ6

which lipid acts as a chemical messenger? adipose tissue, cholesterol, testosterone or beeswax

Answers

Answer:

Testosterone

Explanation:

Testosterone is a chemical messenger that the brain lets out to upper and lower body muscles. Testosterone chemical messenging happens when you're exercising, pumped with adrenaline, or sexual activity.

what type of scientist was Alfred Wegener?​

Answers

Answer:

Meteorologist

Explanation:

Wegener was a meteorologist in the late 1800s to early 1900s

he was also a geophysicist, meaning he investigated physical processes and properties of the earth

Large cells have more volume on the inside and less space on the outside. (Compared to a smaller cell) Because of this, large cells have trouble;

A) dividing
B) producing daughter cells
C) moving materials in and waste products out
D) making copies of their DNA


Heeeeeellppp plzzzz

Answers

C) moving materials in and waste products out

HELPPP!!! ASAPPP!!!!
What does it mean to say that amphibians have a double life?
(NOT A MULTIPLE CHOICE QUESTION)

Answers

Answer:

They start off with gills in the water when they are born. As they mature they lose the gills and need air to breath at maturity.

Explanation:

a tadpole to frog is an example of an amphibian.

Phospholipids
are _________
meaning they have hydrophobic and hydrophilic sections
A. Saturated
B. Hydrogenated
C. Glycogenic
D. Amphipathic

Answers

Answer:

Answer is question number d)Amphipathic

What molecule is used as energy to directly fuel cellular processes like movement, growth and reproduction?

Answers

Answer: Energy

Explanation:

Energy. The glucose molecules serve as fuel for cells: their chemical energy can be harvested through processes like cellular respiration and fermentation, which generate adenosine triphosphate— ATPstart text, A, T, P, end text, a small, energy-carrying molecule—for the cell's immediate energy needs.

Describe what happens to water particles when ice metls.

Answers

Answer:Ice melts when heat energy causes the molecules to move faster, breaking the hydrogen bonds between molecules to form liquid water. In the melting process, the water molecules actually absorb energy.

Explanation:

What he said ^^
I’m pretty sure that’s right so yeah

PLS ANSSWER

A group of plant eating animals moves far away from their original population. In the new environment, the only edible vegetation grows at the top of tall trees. In order to survive, the animals need a new adaptation. Which of the following variations would be the most useful new adaptation to members of the group?
A) Wider, flatter teeth that can chew and grind plant material.


B) A longer neck to reach the vegetation that is high up in the trees.


C) A better digestive system for breaking down plant material.

D) Larger ears and eyes located on sides of head to detect predators.

Answers

Answer:

B

Explanation:

The others would not help because the animals could not reach the vegetation.

B, they would need the longer necks to reach the food

Choose all the answers that apply.

Chromosomes _____.

are tight coils of DNA
are carried on genes
always occur in pairs
can be analyzed in a karyotype
carry thousands of genes

Answers

Answer:

are tight coils of DNA

carry thousands of genes

Explanation:

Answer:

1,5

Explanation:

Which organelle is generally larger in plant cells than in animal cells?
A mitochondrion
B. nucleus
C. ribosome
D. vacuole

Answers

Answer: D. VACUOLE

Explanation:

Answer:

D

Explanation:

From memory, list the 5 characteristics of life.

Answers

Answer:

Cells.

Obtain and Use Energy.

Reproduction.

Respond to the Environment.

Adapt/Evolve.

Explanation:

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