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harina [27]
3 years ago
14

12. A plant has a dominant phenotype but an unknown genotype. The proper experiment to determine its correct genotype would be a

/an: a. heterozygotic cross. b. testcross. c. homozytic cross. d. F1 cross. e. back cross. 13. The correct model of the structure of a DNA molecule was first elucidated/proposed by: a. Franklin and Wilkins. b. Linus Pauling. c. Hershey and Chase. d. Erwin Chargaff. e. Watson and Crick. 14. Steroid hormones (like testosterone) are somewhat unusual in that their receptors are: a. located on the outside of the plasma membrane. b. not involved in signaling pathways. c. intracellular and commonly found in the cytoplasm. d. hydrophobic and located inside the plasma membrane. e. located in the nuclear membrane. 15. Quorum sensing is a process associated with: a. the fight or flight response. b. yeast mating. c. muscle contraction in mammals. d. cAMP-associated responses by a range of higher eukaryotic cells. e. certain
Biology
1 answer:
jekas [21]3 years ago
5 0

Answer:

the correct answers are as follows

12:

b. Testcross- an organism with dominant phenotype but unknown genotype is crossed with homozygous recessive organism for the same trait. Based on the results obtained, if all offsprings have the same phenotype, then the parent is homozygous, but when a 1:1 ratio is observed in the offsprings, then the parent is heterozygous.

13.

e. Watson and Crick- they both used the crystallographic images from Franklin, analyzed them to first elucidate the 3D structure of the DNA and propose it to the world.

14.

c. Intracellular and commonly found in the cytoplasm- the receptors of steroid hormones are generally present within the target cell either in the cytoplasm or nucleus, since they alter gene expression.

15

e. Certain prokaryotes/bacteria- this is a process that will enable disease-causing pathogens to communicate and cooperate with their group, by the release of autoinducers that increase their cell density.

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Why are the prefixes “mono” “di”, and “poly and the base “saccharide” good to use when describing the three types of carbohydrat
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Answer:

“Mono” denotes one, “di” denotes two, and “poly” denotes a large number. 

What is the significance of these words in defining the 

three forms of sugars? 

These terms are used because they depict how the 

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The molecule's base unit is called a "saccharide."

Explanation:

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Explanation: 1+1

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Studies of monkeys raised with artificial mothers suggest that mother-infant emotional
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The correct answer is B. Contact comfort

Explanation:

Studies with Rhesus monkeys were carried out by the psychologists Harry Harlow to study psychological and emotional aspects related to maternal separation and isolation. In this experiment, Harlow used baby monkeys and observed their behavior in different situations that included separating the baby and the mother, providing a fake mother, isolating baby monkeys for a long time and allowing baby monkeys to choose between their mother or food. The results of this experiment showed mother-infant emotional bonds were key for the development and socialization of monkeys, this could be explained as mother monkeys provided contact comfort which supported a positive development and prevailed over food or nourishment.

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Cartography is the science of A. mapmaking. End of exam B. the prime meridian. C. cartoon graphics. D. the solar system.
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The answer to your question is A
3 0
3 years ago
Read 2 more answers
Help please 20 points i mark u as brainlist
Artyom0805 [142]

Answer:

a. Mastication process and formation of bolus in the oral cavity

b. The contraction in the stomach breaks the food down into smaller pieces. These pieces are then moved to the small intestine.

c. In the small intestine, food particles are broken down into nutrients, fat, protein and carbohydrates which are absorbed into the bloodstream.

Explanation:

a. First step of digestive system functioning is the mastication process and formation of bolus in the oral cavity.

b. The contraction in stomach, with the help of digestive enzymes and acids, break the food down into smaller pieces. The small pieces of food are then released into the first part of the small intestine (duodenum).

c. In the small intestine, two enzymes released from pancreas and gall bladder break down the food particles into fats, proteins, and carbohydrates. Thereon, nutrients and carbohydrates, proteins and fats are absorbed into the bloodstream.

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