Biology High School

help plz and thank you

Answers

Answer 1

Answer:

Explanation:

A) all cells contain DNA, and DNA is all composed of adenine, thymine, guanine, and cytosine.

B) not all cells have a nucleus. For example, prokaryotes have no nucleus

C)Not all cells have a cell wall.(Animal cells don't)

D) not all cells have mitochondria (Prokaryotes don't)

Answer 2

Answer:

I think it is D

Explanation:

Sorry If I'm wrong

Related Questions

Under the hypothesis of blending inheritance, what color(s) would the offspring of a black cat and a white cat be

Answers

Under the hypothesis of blending inheritance, the offspring of a black cat and a white cat would be GREY. This theory is not now accepted.

Blending inheritance is an erroneous theory from the 19th century that proposed that offspring inherit phenotypic traits as 'average values' observed for such traits in their parents.

Mendel's laws of heredity (i.e., the Law of Segregation and the Law of Independent Assortment) showed that blending inheritance is based on erroneous concepts.

Moreover, incomplete dominance is an inheritance pattern different from blending inheritance because incomplete dominance refers to the observation that in certain traits both gene variants or 'alleles' are expressed in heterozygous individuals.

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1. Describe how chemical changes
are
different from physical changes.

Answers

Answer:

Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula.

Explanation:

Answer:

In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. In a chemical change, the kind of matter changes, and at least one new substance with new properties is formed.

Explanation:

Physical changes are limited to changes that result in a difference in the display without changing the composition.

hope that helped!

Enzymes transferring electrons at the start of the ETS are referred to as ________, whereas enzymes transferring electrons to the terminal electron acceptor are designated as ________.Question 40 options:a) sulfatases; nitrogenasesb) lyases; hydrolasesc) permeases; proton pumpsd) dehydrogenases; oxidasese) oxidases; dehydrogenases

Answers

Answer:

dehydrogenases; oxidases

Explanation:

how many feet of intestines does the average person have

Answers

Research suggest that the combined length of the small and large intestines is at least 15 ft in length. The small intestine can measure about 9-16 ft while the large intestine is roughly 5ft long.

What is the surgery that involves trimming excess prostate tissue in order to treat urinary problems that are caused by an enlarged prostate?

Answers

Answer:

d. TURP is correct

Explanation: Transurethral resection of the prostate

Answer: D) Turp

hope this helps

which set of parents did the offspring come from?

Answers

Answer:incian.

Explanation:

Which are examples of active transport?
Select all that apply.
exocytosis
phagocytosis
diffusion
pinocytosis

Answers

Answer:

Exocytosis, phagocytosis, and pinocytosis

Explanation:

Active transport is when energy is used to move substances across the cellular membrane.

Exocytosis requires energy to remove materials from the cell; it is active.

Phagocytosis also requires energy; it is active.

Diffusion isn't active because it moves materials down their concentration gradient and therefore it doesn't require energy.

Pinocytosis is a form of endocytosis and requires energy; it is active.

adventitious storage roots are seen in
a)Carrot
b)Sweet potato
c) Turnie
d)Radish

Answers

Answer:

[tex]a)Carrot [/tex]

...............

How are glucose and ethanol similar in structure and function?

Answers

Answer:

Ethanol fermentation, also called alcoholic fermentation, is a biological process which converts sugars such as glucose, fructose, and sucrose into cellular energy, producing ethanol and carbon dioxide as by-products...

Explanation:

How does nitric oxide cause your blood vessels to relax?

Answers

Answer:

increases blood flow and lowers blood pressure.

Explanation:

whats one difference between the ways aristotle and theophrastos classified plants?

Answers

Answer:

Aristotle classified animals based on where they lived, while Linnaeus instead used an animal's morphology, evidence from both fossil records and living organisms.

Mutations in proto-oncogenes are generally _____ whereas mutations in tumor-suppressor alleles are generally _____.

Answers

Answer:

mutations in proto-oncogene are generally cancerous while mutation in tumor-suppressor alleles are recessive and result lost of function

During the development of skeletal muscle cells, some myoblasts do not fuse and instead become ______ cells.

Answers

Answer:

It would become satellite

PLS HELP ASAP ILL GIVE BRAINLKEST I GIVE 10 POINTS ITS NOT BB AND Bb

Answers

It’s the third one
BB, Bb, and bb

ANSWER FOR BRAINLIEST!

Answers

Answer:

Explanation:

mixture
7. Explain the following: All compounds are substances,
but not all substances are compounds."

Answers

Answer:

Below

Explanation:

"All compounds are substances, but not all substances are compounds."

In simpler terms, let us use an example. Look at the image below.

In a big circle, there are substances. And in the small there are compounds. Since the compounds are inside the big circle, they are compounds, but as you can see, the substances are not inside the compounds so they cannot be considered compounds.

If you think about it, a substance is anything. So would you think a bottle, for instance, is a compound? A compound is a mixture of molecules. And a substance is most likely a combination of atoms, which are elements.

What is the medical term for an undescended testicle?

Answers

Answer:

a. Cryptorchidism

Explanation: is correct

Plz answer this question: Read the passage and examine the photos. Then, suggest two reasons that scientists think developing pollen grains made vascular plants the most successful plants that live on land.

Answers

Answer:

Vascular plants are successful due to better transportation for water, nutrients and reproduction.

The xylem and phloem of the vascular bundles allow for distribution of water and food to all parts of the body.

Which of the following does not directly cause erosion?
O Ice
OLichen
ОSun light
oChemicals

Answers

Answer:

a ice

Explanation:

ice doesnt cause erosion directly

It’s either ice or chemicals

Which aquatic ecosystem is often compared to a tropical rain forest why?

Answers

Answer:

Coral reefs is the answer.

Explanation:

Coral reefs are often called the "tropical rainforests of the sea" for their astounding richness of life. Due to their structural complexity, corals are one of the most productive ecosystems on Earth, providing important services to mankind including fisheries, coastal protection, medicines, recreation, and tourism.

Source: Internet

Two brothers have thick hair that grows over their faces and most of their bodies.
This human disorder, called Ambra's Syndrome, shows X-linked dominant inheritance. The
mother of the boys is also affected by Ambra's Syndrome, although her excessive hair growth
occurs in various, scattered patches on her skin rather than a continuous coverage like her sons.
What is the most likely explanation for the patchy expression of hairlessness on the mother's
skin?

Answers

The most likely explanation for the irregular expression of hairlessness on the mother's skin is codominance

Codominance is a biological term to refer to the hereditary pattern that is characterized by:

In the heterozygous state, there is no recessive allele, but both behave as dominant. Codominance is characterized by the manifestation of both characteristics as dominant, without mixing.

According to the above, the irregular expression of the lack of hair in the mother is a manifestation of the codominance of the hair gene and the hairless gene that do not mix but are seen independently.

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Plants do not eat, how do they carry out the process of nutrition?

Answers

Plants absorb nutrients and water through their roots, but photosynthesis — the process by which plants create their fuel — occurs in the leaves. The leaves of plants also contain veins, through which nutrients and hormones travel to reach the cells throughout the leaf.

a human red blood cell is placed in a solution whose solute concentration is twice as great as the concentration of the cell cytoplasm. The cell membrane is selectively permeable allowing water but not the solutes to pass through. What will happen to the cell? a.) No change b.) the cell will shrivel because of osmosis c.) the cell will swell because of osmosis d.) the cell will shrivel because of active transport of water e.) the cell will swell because of active transport of water

Answers

Answer:

the cell will shrivel because of osmosis, moving to the region of higher concentration, and it shrivels due lost of water

B is the correct thing. The water molecules with the cell with move to hypertonic solution until an equilibrium is reach . But in this case solute concentration is twice that of the red blood cell therefore the protoplasm of the red blood cell will move further away from cell. Hence the process called crenation (shrivel )

Some single-celled organisms make copies of themselves through mitosis. Which describes the function of the cell cycle in such single-celled organisms?

Answers

Answer:

In unicellular organisms such as bacteria, mitosis is a type of asexual reproduction, making identical copies of a single cell.

Explanation:

Unicellular organisms are asexual which means they don"t need partners.

As the troponin changes shape (due to binding calcium), it moves the ______ molecule to which it is attached, thus exposing the active sites on the G-actin molecules.

Answers

As the troponin changes shape (due to binding calcium), it moves the tropomysin molecule to which it is attached.

Once calcium binds to troponin and causes it to change it shape, it removes the tropomysin away from the binding site therefore effectively exposing the myosin binding sites.

This occurs during muscle contraction (movement) in the skeletal muscles.

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Answer: tropomyosin

Explanation: just took a quiz :)

what is the main factor that separates the biomes?

Answers

Answer:

Terrestrial biomes are distinguished primarily by their predominant vegetation, and are mainly determined by temperature and rainfall. Differences in temperature or precipitation determine the types of plants that grow in a given area .

The main factor that separates the biomes by predominant vegetation, temperature and rainfall.

What is biomes?

Biomass is plant-based material used as fuel to produce heat or electricity. Examples are wood and wood residues, energy crops

Terrestrial biomes are distinguished primarily by their predominant vegetation, and are mainly determined by temperature and rainfall.

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Which of the following statements would correct one of the roles listed in the table?

Answers

Answer:

Glucose combines with water to form carbon dioxide.

Explanation:

Glucose combines with water to form carbon dioxide.

the ventral rami of spinal nerves ________ form the major nerve plexuses.

Answers

Answer:

The blank is:

C1 through T1 and L1 through S4

Hope this Helps

Help me with this please

Answers

Answer:

4.Red

5. gamma waves

5. Gamma waves

Explanation:

if you look at the visible light they label all the colors for you red is at the end closest to increasing wavelength

When salt water i added to a plant cell why does the cell membrane srink

Answers

If a higher concentration of salt is placed outside of the cell membrane, the water will leave the cell to bond with it. The loss of water from this movement causes plant cells to shrink and wilt.

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