Which of the following microbes cannot reproduce unless it first infects a cell in a host organism?
A.
parasites
B.
bacteria
C.
protozoa
D.
viruses

Answers

Answer 1

Answer:

bacteria is a microbes and host organism

Answer 2

Answer:

D.

viruses

Explanation:


Related Questions

vegetable seeds that do not germinate well after 1 or 2 years are classifed as​

Answers

Answer:

yes

Explanation:

Photosynthesis

Please help me! 10 POINTS!

Answers

Answer:

both mass and velocity will increase

NADP+ is converted into NADPH during the light-dependent reactions. Where does the hydrogen
come from?

Answers

It comes from the splitting of water, in the form of hydrogen ions. Oxygen is released as a by-product.

Explain how scientists use geologic time to determine the age of landforms.

Answers

geologic time use the layer of Rock to describe relationship of events and their sequence chronological order over the history of Earth the layering is a result of the buildingup tiny beats of rocks sediments or Lava cooling at the surface of many years think think of it like a stock of pancakes-the bottom layer is the one that was placed first and therefore is the oldest. the sediments that create the layer of the earth as said one or top of the other

How many reactions that occur in kreb cycle transfer electrons from substrate to an electron acccepting enzyme

Answers

Answer:

Four reactions that occur in kreb cycle transfer electrons from substrate to an electron accepting enzyme.

Explanation:

There is four such a response in which electron is transported from substrate to electron-allowing enzyme. In three of those, NAD+ is decreased to NADH and in one FAD decreases to FADH2. The TCA cycle is likewise recognized as the Krebs cycle after the signature of English biochemist Hans Kreb who illustrated the pathway in the 1930s.

In the system used to classify all organisms, which of the following is true

(A) All groups have the same number of organisms.
(B) Organisms in the same group have similar characteristics.
(C) The largest groups have the most important animals.
(D) Organisms are placed in groups by how big they are.

Answers

Answer:

B is correct, Organisms in the same group have similar characteristics

Explanation:

B
They need to have similar characteristics

Human activities have which type of impact on the environment?

a) positive
b) negative
c) neither a nor b
d) both a and b

Answers

both a and b
example: we plant which is positive and we litter which is negative good luck ❤️
D humans can have both positive and negative impacts on the environment

Which of the following might be an adaptation for a predator? AS SOON AS POSSIBLE NEED HELP PLS THX

Answers

Answer:

we need the answers

Explanation:

Answer:

Many predators have adaptations that help them survive in the wild.  For example, the snake shown below has camoflauge coloring to look like its surroundings.  This gives it the element of surprise when going to attack its prey.  These adaptations help the predator in hunting for food.  Predators have "weapons", or adaptations, that help them hunt and kill prey. Predators' three main "weapons" are teeth, claws, and jaws.  The lion below has all 3 of these "weapons" or adaptations that are used for catching its prey. A lion has sharp claws for catching and grabbing hold prey such as a zebra, and strong jaws and teeth for biting and killing the zebra and for ripping off and chewing the meat.

Explanation:

Hope this helps.

How does a DNAmolecule produce copies of itself?

Answers

Explanation:

DNA replication is the process by which DNA makes a copy of itself during cell division. ... The separation of the two single strands of DNA creates a 'Y' shape called a replication 'fork'. The two separated strands will act as templates for making the new strands of DNA.

17. At the end of their biology unit, 7th grade students were asked to make a glossary of biological terms. Which student did the best job of defining the word "heredity"?​

Answers

Answer:

The question is incomplete, I found a matching question online:

At the end of their biology unit, 7th grade students were asked to make a glossary of biological terms. Which student did the best job of defining the word "heredity"?​

A) Kendall- Heredity is the study of chromosomes and the genes that they contain.

B) Carla- Heredity is the passing of genetic information contained in chromosomes from one generation to the next.

C) Joseph- Heredity is the study of human characteristics passed down from parent to offspring.

D) Devon- Heredity is the reason that tall parents will usually have tall children.

Answer:

The correct answer is:

Carla- Heredity is the passing of genetic information contained in chromosomes from one generation to the next. (B)

Explanation:

Heredity, also known as inheritance is the passing down of genetic traits and genetic information from parents to their offspring through reproduction (sexual or asexual), and this information is contained in DNA materials called chromosomes.

Carla's definition most appropriatly captures the context of genetics, while Kendall and Joseph rather defined "genetics", which is the study of heredity.

Devon did not give a definition, but rather an example.



Fill in the numbers

Answers

3. golgi apparatus
2. rough endoplasmic
1. cytoplasm
i tried my best

What happens during aerobic respiration? А Oxygen is produced. B Glucose is produced. С Lactic acid and oxygen are produced. D ATP, water and carbon dioxide are produced.​

Answers

Answer:

Your answer is D).

please help me:( please

Answers

Answer:

1. F

2.T

3.F

Explanation:

Are chemosynthetic bacteria autotrophs or heterotrophs?

Answers

Answer:

autotrophs

Explanation:

they can produce thier own energy and whatnot without the need of an outside source such as the sun for example

Chemosynthetic bacteria are capable of oxidising various inorganic substances such as nitrates, nitrites and ammonia and use the energy released for their ATP production. So, they are autotrophs and not

What type of rock makes up these layers that help us study the history of the earth

Answers

Answer:

Sedimentary rocks

By studying sedimentary rocks from the Earth's crust, we can learn about the history of how Earth's surface has changed over time

Explanation:

Answer:

Sedimentary rocks is the answer

Explanation:

plants experience _______ gravitropism when their stems move upward.
A. positive
B. negative

Answers

Answer:

Negative

Explanation:

Gravitropisms. Phototropism is a response to the stimulus of light, whereas gravitropism (also called geotropism) is a response to the stimulus of gravity . When the stem grows against the force of gravity (upwards), this is known as a negative gravitropism.

Answer:

negative

Explanation:

this is because negative gravitropism is when a plant grows away from gravity (like moving upwards). then, positive gravitropism is when the roots of a plant move grow downwards.

i hope this helps you!

I don't understand what this is saying, could someone help to me better understand?

Write out the equation for photosynthesis (label the reactants and products, circle the waste products)

Answers

Answer:

6CO2 + 6H20 + (energy) → C6H12O6 + 6O2 Carbon dioxide + water + energy from light produces glucose and oxygen.

Explanation:

What are proteins that are found on the surface of some red blood cells.
genes
alleles
antigens
immunoglobins

Answers

Alleles would be the proteins

Regular sequence of growth and division that cells undergo.
A. cell cycle
B. Mitosis
C. Interphase

Answers

Answer:

Cell Cycle

Explanation:

Explain the process of how air flows through the Respiratory System? In three sentences.

Answers

Answer:

The respiratory system is a biological system consisting of specific organs and structures used for gas exchange in animals and plants. The anatomy and physiology that make this happen varies greatly, depending on the size of the organism, the environment in which it lives and its evolutionary history. In land animals the respiratory surface is internalized as linings of the lungs. Gas exchange in the lungs occurs in millions of small air sacs; in mammals and reptiles these are called alveoli, and in birds they are known as atria. These microscopic air sacs have a very rich blood supply, thus bringing the air into close contact with the blood. These air sacs communicate with the external environment via a system of airways, or hollow tubes, of which the largest is the trachea, which branches in the middle of the chest into the two main bronchi. These enter the lungs where they branch into progressively narrower secondary and tertiary bronchi that branch into numerous smaller tubes, the bronchioles. In birds the bronchioles are termed parabronchi. It is the bronchioles, or parabronchi that generally open into the microscopic alveoli in mammals and atria in birds. Air has to be pumped from the environment into the alveoli or atria by the process of breathing which involves the muscles of respiration.

Explanation:

PLEASE MARK ME AS BRAINLIEST

Identify how scientists use radioactive isotopes by selecting the best answers from the drop-down menus.



Archaeologists use radioactive isotopes to
.

Scientists use radioactive isotopes in agriculture to
.

Geologists use radioactive isotopes to
.

Answers

Answer:

1. Archaeologist use radioactive isotopes to determine the ages of various objects, rocks and materials. This is called radioactive dating. Radioactive isotope Carbon-14 is widely used for this dating process.

2. Scientists use radioactive isotopes in agriculture to monitor or study the uptake and use of essential nutrients by plants from the soil. This helps to determine viability, productivity and nutritious ability of the plants on a piece of land.

3. Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date ancient events. ... Atoms of the same element but with different number of neutrons are called isotopes of that element.

Answer:C: Determine the age of ancient artifacts.A: Understand the biological and chemical processes in plants.B: Determine the age of rocks and fossils.

Explanation:i got the answers right on the assignment.

which statement correctly describes greenhouse gases in the atmosphere?

Answers

Answer: It is a process by which greenhouse gases allow the sun’s light to penetrate the atmosphere but stop the heat from escaping.

Explanation:

Greenhouse effect is the natural heating of the Earth's surface due to the fact that the sunligth waves may penetrate the atmosphere and reach the solid surface, but when the sunlight waves return after reaching the solid surface, process that changes the wavelength of the sunlight, they cannot penetrate the greenhouse gases and so the heat is kept inside the atmosphere with the consequent increase of temperature.

Explain the role of carbon dioxide in photosynthesis?

Answers

Answer:

during the process of photosynthesis, cells use carbon dioxide and energy from the sun to make sugar moleculezs and oxygen..... then, via respiration processes, cells use oxygen and glucose to synthesize energy- rich carier molecules such as ATP, and carbon dioxide is produced as a waste product.

Explanation:

HOPE IT HELPS PO(◍•ᴗ•◍)❤


Carbon dioxide is a key reactant in the process of photosynthesis, providing carbon and oxygen for glucose molecules.


why nitrogen needs to be cycled around
the environment?

Answers

Answer:

nitrogen is an essential nutrient for sustaining life on earth, without it, plants would die, then herbivores due to starvation, and so on

Explanation:

What type of consumers are secondary consumers? ​

Answers

Answer:Tertiary consumers eat the secondary consumers and are usually carnivores (meat eaters).Secondary consumers are organisms that eat primary consumers for energy. Primary consumers are always herbivores, or organisms that only eat autotrophic plants. However, secondary consumers can either be carnivores or omnivores. Carnivores only eat other animals, and omnivores eat both plant and animal matter.

Explanation:

hope this helps❤️❤️❤️

what do the phase changes condensation, evaporation, and crystallization have in common?

Answers

Answer:

They are all a part of the water cycle.

Explanation:

Hope this helps!!!

What happens to the chromosomes when a cell divides to make a copy of itself?

Answers

Answer:

the cell copies or replicates its chromosomes and then splits the copied chromosomes equally to make sure each daughter cell has a full set.

Answer:

Mitosis is used to produce daughter cells that are genetically identical to the parent cells. The cell copies or "replicates" it's chromosomes and then splits the copied chromosomes equally to make sure that each. daughter cell has a full set.

Explanation:

I majored in Biology

Which the following is an example of commensalism

Please help

Answers

Answer: A is the correct answer.

Explanation: Since commensalim is when one organism benefits and the other neither benefits nor gets harmed, A would be the correct answer because the lice are using the flies for transportation, and the flies aren't getting harmed.

Which goes where ? Mitosis Vs. Meiosis

Answers

Answer:

Mitosis, Meiosis, and both are written below

Explanation:

Mitosis: produces more somatic (body) cells, purpose is for healing and growing, the daughter cells are exact replicas

This is because mitosis occurs in body cells and is used for growth, so all the daughter cells are the same.

Meiosis: results in sex cells (gametes), results in eggs and sperm, purpose is for creating new individuals (eventually), each daughter cell is different, has 2 separate division stages

This is because meiosis occurs in gametes and is used in reproduction.

Both: Chromosomes need to replicate before the whole process begins, a form of reproduction

This is because both are reproducing (they are dividing) and DNA must be replicated so each daughter cell has it.  

HELP ME SOMEONE PLZ I REALLY NEED HELP
What are the possible effects of contaminated water on the health of an individual or community? Explain your answer in terms of what causes the contamination, the types of infectious agents involved in the related diseases, and how these diseases can spread. (5 points)

Answers

Answer:

Some possible affects of contaminated water on the health of an individual are, reproductive problems, gastrointestinal illness, cancer, and neurological disorders. Contaminated water can be caused by natural chemicals and minerals like radon, uranium, etc. Contaminated water could also be caused like wastewater releases or sewers overflowing. Some infectious agents involved in the related diseases would be bacteria, viruses, helminths and even protozoa. These diseases can spread through drinking the water, airborne, or just contact with the water or infectious agents.

Explanation:

Hope this helps :-)

Other Questions
there are 30 students in your class. Of the students in your class 12% are left handed what fraction of the students are left handed? What was Churchills purpose? Help ASAP this assignment is due today!!!! The excerpt below was written by Justice Oliver Wendell Holmes in the decision of Schenck v. United States (1919).The most stringent protection of free speech would not protect a man in falsely shounting fire in a theatre and causing a panic.... The question in everycase is whether the words used are used in such curcumstances and are of such a nature as to create a clear and present danger that they will bring about the substantive evils that congress has a right to prevent.Which conduct did the U.S Supreme Court determine was a clear and present danger in this case?demonstrations in which protestors burned American flagsnewspaper articles criticizing U.S. entry into the warthe presence of Japanese Americans on the West Coastthe mailing of pamphlets advising young men to resist the draft HELP PLSSS ASAP!!! HELP ASAP MATH! (BRAINLIST) What is the measure, in degrees of an angle that represents 50/360 of a circle?9050360310 is it bad to not eat ?i dont get hungry very much Why Should You Love Your Job? Which of the following changes are classified as physical changes?-dissolving sugar in hot tea-petrifying wood-cutting an apple into smaller pieces-carving wood-Oburning wood what's the dif between radio waves and infrared waves 3 words that go with populism Which of the following statements about physical fitness is TRUE?A. Physical fitness is a continuous, changing state.B. Physical fitness is influenced by many factors.C. Physical fitness is individualized to each person.D. all of the abovePlease select the best answer from the choices provided.B please help is it A, B , or C Which of the following statements are not true regarding sound? I. It can travel through any kind of matter, as well as a vacuum II. The speed of sound is the same in all materialsIII. The speed of sound is fastest in gases and slowest in solids A ______ is an injury that puts pressure on the brain.A) meningitis B) myeloma C) subdural hematoma D) carcinoma In fraction form EMoDetective A fixed source charge particle of 4.1 nC and a second particle with a charge 2.4 nC are separated by a distance of 3.5 cm. What is the electric potential energy between the particles? And if the second particle is released will it move forward or away from the source charge URGENT NEED ANSWERS _ This a morning work and I don't get when they say "Area of a triangle" I'm still working on it, but Im just so confused. Can you help? what single decimal multiplier would you use to decrease by 7% followed by a 20% decrease The attendance at a new weekly exercise class doubled each week until week 4, when it reached its maximum capacity of 24 people