1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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.

You might be interested in
List the different steps of the rock cycle
diamong [38]

Answer:

Weathering and erosion, transportation, deposition, compaction and cementation, metamorphism, and rock melting.

Explanation:

The rock cycle has 5 main sections (igneous, sedimentary, sediment, metamorphic, and magma.) The rock cycle can go almost any way it wants. Its not like the water cycle were it goes in certain order.

6 0
3 years ago
Read 2 more answers
Assume that the growing polypeptide chain of amino acids being produced represents an enzyme humans use to help digest starch. T
arlik [135]

Answer:

B) nuclei of gland cells.

Explanation:

DNA carries the blueprint for the production of all the proteins including enzymes in human beings. Humans are eukaryotes and their DNA is present in the nucleus of their cells. All the cells that make the complex human body are derived from division in the zygote and therefore, are genetically identical and have the same DNA.

However, gene expression is regulated by the expression of specific genes in specific cells and at a different time of developmental stages. Amylase is the enzyme that digests starch in humans. Amylase is secreted by salivary glands. So, the nuclei of these glands would have genetic information for the synthesis of amylase.

3 0
4 years ago
Read 2 more answers
The plant kingdom is divided into 2 groups vascular and nonvascular. describe each subclass. include key words such as vascular
BaLLatris [955]
<h2>Vascular and Nonvascular Plants </h2>

Explanation:

Kingdom Plantae on the basis of vasculature is divided into two groups-vascular and non-vascular plants .

  • <u>Vascular plants </u>or tracheophytes have a proper tissue-level organization and true shoot and root structures like leaves, stem, flowers, root etc
  • The tissue system or vasculature of vascular plants compromises of vascular tissues like tubular vessels – xylem and phloem
  1. The xylem transports nutrients to various parts of the body from the leaves.
  2. Phloem conducts water and other nutrients from the roots to various parts of the plant .
  • These are flowering plants that include the phanerogams – angiosperms and gymnosperms and bears flowers and fruits like the cedars, pine, clubmosses, lilies, sunflower etc.
  • Dicots are with tubular vasculature.  
  • Non-vascular plants or bryophytes with an absence of proper tissue-level organization and true shoot or root systems
  • <u>Nonvascular plants</u> are small. Their transport mechanism is poor due to lack of vascular tissues
  • These plants are lack proper shoot or root system.
  • It includes mosses, hornworts etc.
  • Monocots are plants with scattered tube-like vessels .
3 0
3 years ago
The suns energy drives which of the following processes?
Delicious77 [7]
The sun's energy drives various processes on earth. One of these processes is photosynthesis in plants whereby light energy is converted into chemical energy by forming carbohydrates from carbon dioxide plus water, which is a process which usually gives off oxygen which animals need to breathe. Another process driven by the sun's energy could be evaporation of water into the air to form water vapour  and clouds which then precipitate when cooled off over mountains so is involved in the water cycle.
7 0
4 years ago
Name three organism in the food web that are carnivores
8090 [49]
Three organism in the food web that are carnivores are hawk, snake, and frog

Hope this Helps
7 0
3 years ago
Other questions:
  • Qual o predador dos cnidarios?
    12·1 answer
  • 1.
    6·1 answer
  • The conclusion in a science text
    9·1 answer
  • What is the correct procedure for students to follow if a chemical is spilled?
    13·1 answer
  • Give examples of prokaryotes and eukaryotes
    7·2 answers
  • In the enzymatic reaction, the __________ is on the left of the arrow, while the products are to the right of the arrow.
    9·1 answer
  • I need help asap!! Please<br> It’s due in a little bit
    12·1 answer
  • How does a region’s latitude impact its climate? What role does the sun play on an area’s climate?
    14·1 answer
  • (c)
    6·1 answer
  • When an invasive species is introduced into a new habitat where it has no natural predators, it can quickly populate. Which best
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!