Cytosine and Thymine are chemically this type of nitrogenous base?

A. Purine
B. Pyrimidine
C. Protein
D. Nucleotide

Answers

Answer 1

Answer:

D

Explanation:

Nitrogenous bases present in the DNA can be grouped into two categories: purines (Adenine (A) and Guanine (G)), and pyrimidine (Cytosine (C) and Thymine (T)). These nitrogenous bases are attached to C1' of deoxyribose through a glycosidic bond.


Related Questions

True or false - DNA and RNA store heredity to make proteins?

Answers

in my own opinion I think it's false ..,

Explain what information about populations cannot be gathered when looking solely at population pyramid data.

Answers

Answer:

Hi there, so the population pyramid visualizes two variables which are sex and age but it doesn't tell us the actual number of population within a region it only collects the sex (female and males) and the ages (ranging from infant to elderly).

So the only thing that population pyramid data can't collect is the actual population in number.

Hope this helped :)  

The population pyramid, therefore, depicts the two factors of sex and age, but it is silent on the region's actual population size instead, it simply gathers data on ages and sex (females and men) (ranging from infant to elderly).

What is the population?

As a result, the only thing the population pyramid data cannot measure is the size of the population.

Population pyramids do have certain restrictions, though. It is typically impossible to tell the relative contributions of various demographic processes on population age structure since they simply provide the size of each age-sex group in the population.

Therefore, depicts the two factors of sex and age, but it is silent on the region's actual population size instead, it simply gathers data on ages and sex.

Learn more about the population, here:

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Great amount of electromagnetic energy from sun and other bodies in space travel through space. Which is a logical conclusion about electromagnetic waves

Energy must be very low

Frequency must be very low

Their wavelength must be very short

these wave can travel without the medium

Answers

Answer:

last option- these waves can travel without the medium

What do you know about bacteria?
(Multiple choice question)

They are microscopic cells

They are like viruses

They are infectious particles

Answers

Answer:

They are microscopic cells

Explanation:

Answer: B

Explanation: they are like viruses . Because virus has bacteria

Amino Acids contain which element? *
Nitrogen
Helium
Zinc
Sodium

Answers

it contains 4 key elements carbon, hydrogen, oxygen and Nitrogen. so your answer is nitrogen

3. What is the original source of energy for all fossil fuels?

hydrocarbons

photosynthesis

the Sun

cosmic radioactivity

Answers

Answer:

the sun

Explanation:

All the energy in oil, gas, and coal originally came from the sun, captured through photosynthesis. In the same way that we burn wood to release energy that trees capture from the sun, we burn fossil fuels to release the energy that ancient plants captured from the sun.

hope this helps

The sun. The sun is a constant form of energy giving us light and heat

what dose the nucleus control ​

Answers

Answer:

the nucleus controls and regulates the activities of the cell (growth and metabolism) and carries the genes, structures that contain the hereditary information.

Answer:The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus. The gel-like matrix in which the nuclear components are suspended is the nucleoplasm.

From a single fertilized ovum undergoing a series of rapid cell divisions, a human infant develops. The embryonic cells become specialized for a variety of functions. Which of these statements best describes how different cell types develop

Answers

Answer:

Each cell has an identical copy of DNA with enzymes controlling the expression of specific genes, leading to a variety of cells

Explanation:

Each cell type contains only the active parts of the DNA needed for that cell type Each cell type has only one chromosome containing the DNA needed for that cell type. Each cell has an identical copy of DNA with enzymes controlling the expression of specific genes, leading to a variety of cells Each cell has multiple copies of DNA that are affected in different ways by the environment to change the function of the cell at regular intervals.

The correct answer would be that each cell has an identical copy of DNA with enzymes controlling the expression of specific genes, leading to a variety of cells .

Cell differentiation occurs when a specific segment of the DNA of a cell is expressed during gene regulation and control. The segment of DNA expressed would be dependent on the function the cell is meant to perform. Thus, if cell A is meant to perform an excretory role and cell B is meant to perform a digestive role, even though cells A and B contain the same DNA, different segments of their DNAs would be expressed so that each cell becomes adapted to its role.

Many shark species have experienced a great deal of decline in population sizes due to a variety of factors. In the Bahamas, sharks are plentiful, but still experience a decline as populations reach their carrying capacity. Which of the following factors does not affect the carrying capacity of all shark species?

Answers

Answer:

You didnt list the factors? comment the factors and ill come back to answer

Which of these does organic farming use?
A.
effective pesticides
B.
genetically modified seeds
C.
hormones
D.
fertilizers
E.
green manure

Answers

E is the right answer

What are the characteristics of air masses?

Answers

Answer:

Air masses have fairly uniform temperature and moisture content in horizontal direction (but not uniform in vertical). Air masses are characterized by their temperature and humidity properties. The properties of air masses are determined by the the underlying surface properties where they originate.

Explanation:

what is the theory of plate tectonics?

Answers

Answer: The theory states that the earth's crust is divided into massive slabs known as tectonic plates.

Explanation:

These plates move on the mantle which is a layer made of magma, which consists of semisolid rocks.The heat from earth's core causes convection currents much like in a beaker full of water.But, here the force developed by the magma is so great that it slowly moves the plates like boats on sea over millions of years.

Answer: The theory of tectonic plates says that the Earth's outer crust, the lithosphere, is separated into plates that are covering this entire world.

Which of the following statements is true of the cell membrane?
1. it controls what molecules enter and exit the cell
II. it contains protein channels that help move molecules in and out
III. it surrounds all plant cells
o I only
o ll only
o III only
ol & ll only
o I & III only
O I, II, & III
Next
1 2 3 4 5 6 7 8 9 10

Answers

Answer:

1, 2, & 3

Explanation:

The cell membrane controls what enters and exits the cell and thus protects the cell.

Water molecules and ions move through channel proteins. Other ions or molecules are also carried across the cell membrane by carrier proteins.

Cell membranes surround all animal, plant, and bacterial cells.

Fertilization is when a sperm and egg fuse together to make a zygote. Once formed, the zygote will undergo which type of cell division to eventually grow into a fetus?

mitosis

meiosis II

both meiosis I and II

meiosis I

Answers

Answer:

both meiosis I and II if i'm wrong remove my answer

Explanation:

What can be found in prokaryotic cells?

Select all that apply.

A. DNA

B. nucleus

C. ribosomes

D. plasmids

I think all of the above but I am not quite sure... this question popped up on my unit test and I wanted to ask to make sure.

Answers

Answer:

ribosomes and DNA i never heard of the last one

Explanation:

edgeunity 2020 unit test

A mother is heterozygous for Type B blood and a father has type O blood, what is the probability of being a carrier of Type O blood?

A. 50%
B. 100%
C. 0%
D. 25%
E. 75%

Answers

Answer: 50%

Explanation:

(I Tried Putting My Explanation Its Not Working Bc Its Inappropriate)

But If The Mothers Blood Type Is 0 and the fathers blood type is A then it would be 50% Genotype for the child

Hope This Helps :) please mark brainliest

The proper function of the stomates on the leaf (and therefore, the function of water and CO2 movement) is influenced most by which element

Answers

Answer:

Sunlight.

Explanation:

Sunlight is responsible for proper functioning of stomata present on the leaves because the stomata only opens when there is sunlight and when the stomata opens, carbondioxide gas is absorbed by the leaves from the air while the water is taken from the roots which combines together to form glucose and oxygen. Glucose is stored in different parts of the plant while some oxygen is used by the plants in the process of respiration while the remaining oxygen is released in the atmosphere through stomata.

3 paragraph essay on the natural selection process

Answers

Answer:

                       

Explanation:

 

How many amino acids does this protein segment contain?

Answers

Answer:  the given protein segment contains 20 amino acids

The given segment of the polypeptide chain is made up of four different types of amino acids, and each amino acid is connected to each other by the peptide bond, and the chain elongates from the N terminal to the C terminal.

What is the significance of amino acids?

There are 20 different standard amino acids that take part in polypeptide chain synthesis, and those are categorized into some particular types such as hydrophobic amino acids, hydrophilic amino acids, charged and uncharged amino acids, etc., and different compositions of the amino acids make different types of proteins. The polypeptide chain is generally synthesized from the N terminal to the C terminal, and here in the given diagram, there are four amino acids, and each amino acid has an amino group, a carboxylic group, a hydrogen group, and one side chain bonded to a single central carbon atom.

Hence, the given segment of the polypeptide chain is made up of four different types of amino acids.

Learn more about the amino acid here.

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the passive transport of water molecules across a membrane is called .....​

Answers

Answer:osmosis

Explanation:

Answer:

Water, carbon dioxide, and oxygen.

Explanation:

Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.

4 How many genetically different kinds of gametes an individual with genotype Aabb can
produce?
a)1
b)2
c) 4
d) 8​

Answers

Answer:

I believe the answer is C.) 4

43 POINTS!! SEND HELP ASAP ILL GIVE THE CROWN JUST HELP IM BEING TIMED

Consider the diagram.
Which process is represented?
A.) deletion
B.) nondisjunction
C.) translocation
D.) insertion

Answers

Answer:

C

Explanation:

In your own words, describe what terrace farming is and explain how terrace farming benefited the Ancient Chinese.

Answers

Answer:

Terrace farming is a method of farming whereby “steps” known as terraces are built onto the slopes of hills and mountains. When it rains, instead of rain carrying away the soil nutrients and plants down the slope, they flow to the next terrace

Explanation:

hope this helped :)

This system provides energy from food
A. Circulatory
B. Endocrine
C. Digestive
D. Lymphatic ​

Answers

Answer:

c

Explanation:

Carbohydrates, proteins, and lipids provide this energy. Chemical bonds in molecules of these nutrients contain energy. When the bonds are broken during digestion to form simpler molecules, the energy is released.

ill give you a brainliest if it is right

Answers

Answer:

half

Explanation:

please mark as brainllest !!!!!!!!!!

囧   ↖(^ω^)↗  (○’ω’○)  ::>_<::

DNA is duplicated during a process called

Answers

Answer:

DNA replication

Explanation:

As CO2 concentration increases in this graph, how is average global temperature affected?

Answers

Answer:

increases as well

Explanation:

carbon dioxide and other greenhouse gases contribute to the effects of global warming

Given reason the base of a building is made wider​

Answers

Answer:

here

Explanation:

to make it stable and not fall :)

Which is the simplified form of x-12?
A.x12
B.– x12
C.1
12
D.1
+12

Answers

1/x^12 (c) hope this helps:)

The simplified form of [tex]X^{-12}[/tex] would be [tex]\frac{1}{X^{12}}[/tex]

Law of Indices

According to one of the laws of indices:

[tex]X^{-1}[/tex] is the same thing as [tex]\frac{1}{X}[/tex]

Following this rule,  [tex]X^{-12}[/tex] with thus be  [tex]\frac{1}{X^{12}}[/tex]

More on laws of indices can be found here: https://brainly.com/question/15339224

Help me plsss!!!!!!!

Answers

Answer:

Yes

Explanation:

The earth revolve around the sun at a constant speed of 67,000 mi/hr because if it is not, we will feel the earth moving.

Answer: I think it's yes

(I'm so sorry if it's wrong)

Hope this Helps!

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