BIOLOGY COLLEGE

Which statement is correct about the polarity of a water molecule

Answers

Answer 1
Answer:

Answer:

Water is Polar

Explanation:

There is no overall charge to a water molecule, but there is a slight positive charge on each hydrogen atom and slight negative charge on the oxygen atom.
Answer 2
Answer: Water is polar good luck

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Oh, no... you dropped your study flashcards, and now they're out of order! Put them back into the correct order for a eukaryotic cell. a. "Combine the mRNA strand with a ribosome and a tRNA carrying a methionine." b. "Unwind the DNA molecule near the promoter." c. "Exit the nucleus to the cytoplasm." d. "Transcribe the complementary RNA strand."

This diagram shows that embryos of certain species develop almost identically in the earliest stages of embryonic development. These physical similarities indicate that there are also genetic similarities among these organisms. The physical and genetic embryological similarities among these organisms suggest that they A. descended from a common ancestor. B. have multiple vestigial organs in common. C. are members of the same genus. D. hunt and breed in similar habitats.

Answers

The correct option is A.
The observation that the embryos of certain species have physical and genetical similarities in the earliest stages of embryonic development shows that individual development of an organism shows its revolutionary history and this is taken as an evidence of common ancestry. Scientists takes this observation to mean that all life on earth developed from a single ancestor.

Write an essay on ecosystem productivity​

Answers

A ecosystem productivity is a rate of generation of biomass.’’I know this because it states.”In economy productivity refers to the rate of generation of biomass in an economy.This shows that the economy its usually expressed in units of mass per unit.

Identify a dependent variable measured in the researcher’s experiment. Identify one control that the researcher could use to improve the validity of the experiment. Justify the researcher analyzing blood samples at many intermediate time points instead of at only the beginning and the end of the 20-week period. BoldItalicUnderline

Answers

Dependent variables and independent variables in an experiment are defined as the terms of cause and effect.

The variables are:

  • The dependent variable is the concentrated lactic acid and NAD+.
  • Control is the response of NAD+ and lactic acid in the absence of vitamin treatment.

In the given experiment, the dependent variable is the concentrated lactic acid and that of NAD+, whereas the control is the response of NAD+ and lactic acid in the absence of vitamin treatment.

The given experiment is about respiration in which the electrons from glycolysis and Krebs cycle are transmitted to the electron transport chain. In the electron transport chain, reduction of NAD+ into NADH takes place.

Thus, the variables in an experiment are used to study the hypothesize the results.

To know more about variables, refer to the following link:

brainly.com/question/10415158

Answer:

(a).concentrated lactic acid and that of NAD+.

(b).use of the response of NAD+ and lactic acid in absence of vitamin treatment as the CONTROL.

Explanation:

To understand this question and be able to solve this question efficiently we have to understand the concept of "respiration''. But, the short and the most simple answer to the question above can be found in the first statement of the question.

The electron transport chain include the cycle that occurs during glycolysis, fermentation and the transformation of NAD+ to form NADH and vice versa.

In the research, the dependent variable is the concentrated lactic acid and that of NAD+.

In order to increase the validity of the experiment, the Researcher can make use of the response of NAD+ and lactic acid in absence of vitamin treatment as the CONTROL.

3. How many times can the nuclear DNA replicate during the life cycle of a cell? *Always

Only once

Twice

Many times

Answers

Only once because the DNA replication initiation is tightly linked to cell cycle progression,ensuring that replication occur only once per cycle

Identify the parts of the digestive system. Select all that apply. * 5 points stomach esophagus large intestine lungs

Answers

Answer:

stomach large entestint

Explanation:

Adipose tissues belong to ___________a. nervous tissues
b. muscle tissues
c. connective tissues
d. epithelial tissues

Answers

Answer:

c. connective tissues

Explanation:

Adipose tissue is a connective tissue which is composed of cells called adipocytes. Since it a loose connective tissue located beneath the skin and around internal organs.

The main function of this tissue is to store fat, although it also cushions and insulates the body. It provides protective covering around internal organs. Since it stores fat it also functions as a reserve of nutrients.

Adipose tissue also acts as an endocrine organ. It has the ability to make a number of biologically active compounds that regulate metabolic homeostasis.

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