Based on your knowledge of the cell structures of living things, what is one reason viruses are not considered alive?
A.They lack cell walls
B.they lack nuclei
C.they lack chroroplast
D.they lack cell membranes​

Answers

Answer 1

Answer:

What does it mean to be 'alive'? At a basic level, viruses are proteins and genetic material that survive and replicate within their environment, inside another life form. In the absence of their host, viruses are unable to replicate and many are unable to survive for long in the extracellular environment.

Answer 2

Answer:

B

Explanation:

The nuclei is basically like the heart of a cell.


Related Questions

What powers the carbon cycle?

Answers

Answer:

[tex] \: [/tex]

Carbon moves from fossil fuels to the atmosphere when fuels are burned. When humans burn fossil fuels to power factories, power plants, cars and trucks, most of the carbon quickly enters the atmosphere as carbon dioxide gas.

Answer:

The carbon cycle is the biogeochemical cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth. Carbon is the main component of biological compounds as well as a major component of many minerals such as limestone. Along with the nitrogen cycle and the water cycle, the carbon cycle comprises a sequence of events that are key to make Earth capable of sustaining life. It describes the movement of carbon as it is recycled and reused throughout the biosphere, as well as long-term processes of carbon sequestration to and release from carbon sinks. Carbon sinks in the land and the ocean each currently take up about one-quarter of anthropogenic carbon emissions each year.

Explanation:

CAN I GET BRAINLIST

The movement of small organic molecules, electrolytes, vitamins, and water across the digestive epithelium and into the intestinal fluid of the digestive tract is called what then? I can understand if going into the interstitial fluid of the digestive tract that it would be called Absorption; however, what is it called when it moves into the intestinal fluid of the digestive tract?

Answers

Answer:

As you have learned, the process of mechanical digestion is relatively simple. It involves the physical breakdown of food but does not alter its chemical makeup. Chemical digestion, on the other hand, is a complex process that reduces food into its chemical building blocks, which are then absorbed to nourish the cells of the body. In this section, you will look more closely at the processes of chemical digestion and absorption.

This diagram identifies the functions of mechanical and chemical digestion and absorption at each organ. Next to each organ, a callout identifies which steps of digestion take place in that particular organ.

Explanation:

Name at least three hormones which are used commercially and list why they are used.

Answers

Answer:

Auxins, Ethene and Cytopkinins

Explanation:

Auxins used in commercial fo Crop production.

Ethene used in commercial to fruit to ripen.

Cytokinins used in commercial to reduce yellowing in green vegetables.

Auxins are utilized in the commercial production of crops. Ethene is a commercial fruit ripening agent. Cytokinins are used commercially to stop green crops from turning yellow.

What are plant hormones?

Almost every element of plant growth and reaction to its environment is regulated by plant hormones. Numerous plant hormones play important roles in the interactions between plants and helpful microorganisms because they are active at extremely low concentrations and have precise spatial control of synthesis and response.

The "The Role of Plant Hormones in Plant-Microbe Symbioses" special issue offers fresh information on the functions of hormones produced from both the plant and the microbial partner in symbiosis establishment and communication. This includes the close symbioses that the majority of terrestrial plants have with arbuscular mycorrhizal (AM) fungi, as well as the more recently acquired nodulation—symbioses between a select group of plants in the fabid clade and nitrogen-fixing bacteria.

The articles in this special issue also look at how hormones affect how plants interact with ectomycorrhizae, endophytic bacteria, and fungi, and helpful microorganisms that stick to the surfaces of the leaves and roots. Many hormones can interact with one another in addition to acting directly to regulate the growth of these symbioses, and these intricate networks are just beginning to emerge.

Therefore, various plant hormones are used commercially.

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What is the chemical name of K2O? (correct answer gets brainliest)

A) potassium oxygen
B) potassium oxide
C) oxygen potasside
D) oxygen potassium

Answers

Answer:

A because K is potassium

B Potassium Oxide is known as K2O

Hope this helps you

The productivity can be indicated by:

Answers

Answer:

One of the most widely used measures of productivity is Gross Domestic Product (GDP) per hour worked. This measure captures the use of labour inputs better than just output per employee

Drag the correct RNA bases to their matching DNA bases.

Answers

Answer:

DNA and RNA bases are also held together by chemical bonds and have specific base pairing rules. In DNA/RNA base pairing, adenine (A) pairs with uracil (U), and cytosine (C) pairs with guanine (G).

The small size of cells
A. Allows for efficient transport of materials
B. Causes food to be broken down slowly
C. Slows down the removal of wastes
D. Allows for fewer cell organelles

Answers

Answer:

A

Explanation:

this is because, in smaller organism their SA/V ratio is large hence they have efficient transport of materials within their cells

25. Which one of the following epithelial tissues lines blood capillaries?
A. Cuboidal tissue
5. Whigh
B. Squamous tissue
C. Columnar tissue
D. Glandular tissue

Answers

Answer: I think it’s D. Pls don’t bash me if it’s wrong
I would choose the option B.
The walls of capillaries are composed of just one cell layer, a simple squamous epithelium, or endothelium.

White-tailed deer raise their tails when they spot a predator approaching; the predator typically gives up its pursuit once it knows that the faster prey species has seen it. This is an example of

Answers

I would guess the animal that is getting chased by a White tailed deer might be a dog or monkey

the business cycle illustrates the long-run fluctuations of ___.

a) real GDP

b) nominal GDP

c) aggregate supply

d) the dollars value

Answers

The answer of ur questions is a). Real GDP

Answer:

1 Real GDP

2 expansion stage of the business cycle

3 two

4 high unemployment

5 shock

OCA Stages of the Business Cycle Quick Check

state the different types of enzyme inhabitors

Answers

Answer:

Reversible and irreversible inhibitors are chemicals which bind to an enzyme to suppress its activity.

The important types of inhibitors are competitive, noncompetitive, and uncompetitive inhibitors.

Explanation:

BY Roses_are_Rosie

Which description is not a property of an acid?

Sour taste
Slimy Feel
dissolve metals
corrosive

brainliest will be possible

Answers

The correct option is C. Slimy feel

When you eat a lemon, you can taste the sourness.

When you have rust, you can acidicly burn it off.

And acid is obviously corrosive, which leaves C- which we know is not a property of acid.

I hope this helps!

Answer:

slimy feel

Explanation:

What is the model scientists use to track
energy movement through an ecosystem?
A. A food web
B. A food pyramid
C. A tipphic map

Answers

A: A food web.

explanation: it’s the simplest diagram that shows one way energy flows through an ecosystem.

hope it helps!

A single bout of resistance exercise training increases muscle protein synthesis by as much as ______% above resting levels

Answers

Answer:

A single bout of resistance exercise training increases muscle protein synthesis by as much as 120-150% above resting levels

Choose which assumption must be made in order for this estimate of broad-sense heritability to be correct.

a. The phenotypic variance of the genetically identical plants is the same as the genetically variable population.
b. The genetic variance component is strictly the result of additive genetic variance.
c. The environmental variance of the genetically identical plants is the same as that of the genetically variable population.
d. There is no phenotypic variance associated with the environment.

Answers

The assumption 'environmental variance of the genetically identical plants is the same as that of the genetically variable population' is CORRECT. It is used to estimate the variation due to genetic factors.

Heritability (h2) refers to the proportion of the variability of a given phenotypic trait due to genetic factors.

Broad-sense heritability is affected by genetic and environmental factors.

Broad-sense heritability can be estimated as H² = VG/VP, where VG and VP represent genetic variability and phenotypic variability, respectively.

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Help anyone numbers 1-16 I am not asking for all just some or even one thank you

Answers

anyways 1. dominant allele, 2. gene, 3.genetics 4. genotype, 5. recessive allele,10. cross pollination 12. probability.

define newtons first law
tell this answer fast hcscteoxnp bebrainly​

Answers

Answer:

Newton's first law states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

After following humane guidelines for stunning an
animal, the carcass is

Answers

sorry I don’t know I just need points

What is sun ? Pls answer me

Answers

The Sun is a star. It is a huge, spinning, glowing sphere of hot gas. The Sun is just like the stars that you see in the night sky. ... The Sun is the center of our Solar System and contains most of the mass in the Solar System. All of the planets in our Solar System, including Earth, orbit around the Sun.

Answer: The Sun is the star at the center of the Solar System. It is a nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy mainly as visible light and infrared radiation.

Explanation:

Which pair of triangles can be proven congruent by SAS?

Answers

Answer:

Explanation:

The seconded one

The second triangle can be proven congruent by SAS (side-angle-side). Therefore, option B is correct.

What is SAS property?

SAS stands for "Side-Angle-Side" and it is a property of congruent triangles. This property states that if two triangles have two pairs of corresponding sides that are proportional and the included angles between those sides are congruent, then the triangles are congruent.

In other words, if two triangles have the same length of two sides and the angles formed by these sides are the same, then the triangles are congruent.

This property is one of several ways to prove that two triangles are congruent, and it is a useful tool in geometry and trigonometry. The other ways to prove the congruence of triangles are SSS (Side-Side-Side), ASA (Angle-Side-Angle), AAS (Angle-Angle-Side), and HL (Hypotenuse-Leg) properties. Hence, option B is correct.

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Gametes are ______ They have ______ the number of chromosomes.


1) diploid; double the number of
chromosomes.

2) diploid; half the number of chromosomes.

3) haploid; double half the number of chromosomes.

4) haploid; half the number of chromosomes.

Answers

Answer:

4. haploid half the number of chromosomes

Which chemical produced by the burning of fossil fuels causes acid rain?
Water
Nitric oxide
Carbon dioxide
Phosphatys

Answers

Answer:

it's carbon dioxide good luck.

During replication, the genetic material of an organism has developed an error which is now part of the genome in its gamete cells. What is the most likely result of this mutation?

(A) Its offspring will inherit a new set of genetic material each generation.
(В) Its offspring will inherit the mutation if it does not prevent reproduction.
(C) Its offspring will revert to the genetic material of an evolutionary ancestor.
(D) Its offspring will revert to the original genetic material from the previous generation.​

Answers

Answer:

B please mark brainliest if correct

Explanation:

Some animal species are divided into what
A.varieties
B.sub species
C.identical species
D.twin species

Answers

Answer:

YEssir

Explanation:

cause it is

Which base is found in RNA but not in DNA:
O guanine
O uracil
O adenine
O cytosine

Answers

Answer:

Uracil

Explanation:

Hi , what is example of light source

Answers

Answer: sun

light bulbs

me lol just kidDing

Answer:

Sun , fire , light bulbs , electricity in storms, stars , fireflies

Describe the circulation away from the Celiac trunk in the abdomen. What do the branches of the Celiac trunk supply?

Answers

Answer:

.

Explanation:

.

The answers are


A: Cholesterol


B:

Integral protein


C: Glycolipid


D: Glycoprotein

Answers

Answer:

sis /  bro

whats the question pls type in the comment of mine and i will say the answer

Which choice would have the smallest impact on climate change when purchasing apples at the store?

Answers

Answer: Varies

Explanation:

Something that comes to mind would be if a customer buyed a plastic bag after purchasing the apples.

What is photosynthesis?
josephconingco10! Please help :)

Answers

in simple,

Preparation of food by plant is called photosynthesis.

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