Different ___ of an element have different numbers of neutrons. A. ions
B. isotopes
C. compounds
D. molecules

Please answer quickly if able :)​

Answers

Answer 1
Answer:

ANSWER: it is isotopes

Answer 2
Answer: The answer is Isotopes

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The Calvin cycle:produces glucose and water
is the second stage of photosynthesis
does not require light
all of the above if u would help wich one would it be

Answers

Answer: Calvin cycle is the second stage of photosynthesis and does not require light.

Explanation: Photosynthetic reactions are divided into two phases: light dependent reactions and carbon fixation reactions. Light dependent reactions is the first stage of photosynthesis in which sunlight is used to split a molecule of water and the energy generated is conserved in form of ATP and NADPH.

Calvin cycle is the second stage of photosynthesis. It is also called carbon fixation reactions. These reactions do not need light to occur. It occurs in the dark, the ATP and NADPH produced in light dependent reactions are used to drive these reactions. In Calvin cycle, carbon dioxide is assimilated through a cyclic pathway to produce triose phosphate which is a precursor for glucose and other related molecules such as starch.

Final answer:

The Calvin cycle is the second stage of photosynthesis.

Explanation:

The correct statement is the second stage of photosynthesis. The Calvin cycle is a series of reactions that occur in the stroma of chloroplasts in plants. It takes place after the light-dependent reactions and uses the energy stored in ATP and NADPH to convert carbon dioxide into glucose. This cycle does not directly produce water and does not require light.

Also known as the Calvin-Benson cycle, is a series of biochemical reactions that take place in the stroma of chloroplasts during photosynthesis. It converts carbon dioxide and energy from ATP and NADPH into glucose and other organic molecules. The Calvin cycle is a crucial part of the light-independent reactions of photosynthesis.

Learn more about Calvin cycle here:

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Scientists include controls in their experiments why is a control important

Answers

Answer:

"The control experiments are basically done to compare the main experiment and the experiment done in controlled manner so as to observe the changes and also to minimize the changing effect"

Explanation:

The scientists include the control in their experiments which can help them to minimize the changes and can observe the changes meticulously.  In control experiment the observation are made with minimum effect of the variables leaving the independent variable. This type of experiments help in increasing the reliability of the output. The control experiments are basically done to compare the main experiment and the experiment done in controlled manner so as to observe the changes.

All living organisms contain genetic material that is composed of

Answers

DNA as well as genes and the chromosomes that make up the DNA :)

Answer:

DNA (deoxyribonucleic acid)

Explanation:

In living beings (and in retroviruses), the genetic material is composed almost exclusively of deoxyribonucleic acid, known as double-stranded DNA.

DNA is an organic compound that contains genetic information that coordinates the development and the vital functions of the organisms of living beings.

That means that it determines the physical and physiological characteristics. In addition, it has the function of transmitting hereditary traits, such as, for example, hair color, eye color, and much other physical aspects.

In the case of DNA viruses, the material may be made of single-stranded DNA, while RNA viruses have RNAribonucleic acid as their genetic material.

Signals travel to the brain over a bundle of tissue called stem nerves.

True
False

Answers

someone correct me if im wrong but i think its TRUE

How are invertebrates better? PLZ help ASAP

Answers

Invertebrateany animal that lacks a vertebral column, or backbone, in contrast to the cartilaginous or bony vertebrates. More than 90 percent of all living animal species are invertebrates. Worldwide in distribution, they include animals as diverse as sea stars, sea urchins, earthworms, sponges, jellyfish, lobsters, crabs, insects, spiders, snails, clams, and squid. Invertebrates are especially important as agricultural pests, parasites, or agents for the transmission of parasitic infections to humans and other vertebrates. Invertebrates serve as food for humans and are key elements in food chains that support birds, fish, and many other vertebrate species.Apart from the absence of a vertebral column, invertebrates have little in common. Indeed, they are distributed between more than 35 phyla. In contrast, all vertebrates are contained within a single phylum, the Chordata. (Phylum Chordata also includes the sea squirts and some other invertebrate groups.) Invertebrates are generally soft-bodied animals that lack a rigid internal skeleton for the attachment of muscles but often possess a hard outer skeleton (as in most mollusks, crustaceans, and insects) that serves, as well, for body protection.

What is natural selection

Answers

Answer:

the process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin and is now believed to be the main process that brings about evolution.

Explanation:

Answer:

90 percent sure the answer is A